init

src/infrastructure/cache/__init__.py

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+from src.infrastructure.cache.client import create_redis_client
+from src.infrastructure.cache.keydb_client import KeydbCache

src/infrastructure/cache/client.py

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+import redis.asyncio as redis
+from redis.asyncio.client import Redis
+from src.infrastructure.config import settings
+
+
+def create_redis_client() -> Redis:
+    kw = {
+        'max_connections': 50,
+        'decode_responses': True,
+        'socket_timeout': 5,
+        'socket_connect_timeout': 5,
+        'health_check_interval': 30,
+        'retry_on_timeout': True,
+        'socket_keepalive': True,
+    }
+    if settings.REDIS_PASSWORD:
+        kw['password'] = settings.REDIS_PASSWORD
+    return redis.from_url(settings.REDIS_URL, **kw)

src/infrastructure/cache/keydb_client.py

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+from redis.asyncio.client import Redis
+from src.application.contracts import ICache
+
+
+class KeydbCache(ICache):
+    def __init__(self, redis_client: Redis):
+        self._r = redis_client
+
+    async def set(self, key: str, value: str, ttl: int) -> None:
+        return bool(await self._r.set(key, value, ex=ttl))
+
+    async def set_nx(self, key: str, value: str, ttl: int) -> bool:
+        return bool(await self._r.set(key, value, ex=ttl, nx=True))
+
+    async def get(self, key: str) -> str | None:
+        return await self._r.get(key)
+
+    async def delete(self, key: str) -> bool:
+        deleted = await self._r.delete(key)
+        return deleted > 0

src/infrastructure/config/__init__.py

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+from src.infrastructure.config.settings import settings

src/infrastructure/config/settings.py

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+from __future__ import annotations
+
+from functools import lru_cache
+from typing import List, Literal
+import os
+from dotenv import load_dotenv, find_dotenv
+from pydantic import AliasChoices, Field, field_validator, model_validator
+from pydantic_settings import BaseSettings, SettingsConfigDict
+from src.infrastructure.vault import create_hvac_client_from_approle, read_kv2_secret
+
+env_file = find_dotenv(".env")
+if env_file:
+    load_dotenv(env_file)
+
+
+def normalize_vault_base_url(raw: str) -> str:
+    u = raw.strip().rstrip('/')
+    if not u:
+        return raw.strip()
+    if '://' not in u:
+        return f'https://{u}'
+    return u
+
+
+class Settings(BaseSettings):
+    VAULT_ADDR: str = Field(default='http://localhost:8200')
+    VAULT_ROLE_ID: str = Field(..., description='AppRole role_id')
+    VAULT_SECRET_ID: str = Field(
+        ...,
+        description='AppRole secret_id',
+        validation_alias=AliasChoices('VAULT_SECRET_ID', 'VAULT_SECRET_TOKEN'),
+    )
+    VAULT_NAMESPACE: str | None = Field(default=None)
+    VAULT_MOUNT_POINT: str = Field(default='dev-secrets')
+
+    VAULT_JWT_KID_PATH: str = 'jwt/kid'
+    VAULT_JWT_KIDS_PREFIX: str = 'jwt/kids'
+    VAULT_CRYPTO_MASTER_KEY_PATH: str = 'crypto/master'
+    VAULT_LEGAL_DOCS_S3_SECRET_PATH: str = 's3/legal-docs'
+    JWT_KEYS_REFRESH_SECONDS: int = 3600
+
+    DATABASE_HOST: str
+    DATABASE_PORT: int = Field(default=5432, ge=1, le=65535)
+    DATABASE_NAME: str
+    DATABASE_USER: str
+    DATABASE_PASSWORD: str
+
+    DATABASE_POOL_SIZE: int = 10
+    DATABASE_MAX_OVERFLOW: int = 20
+    DATABASE_POOL_TIMEOUT: int = 30
+    DATABASE_POOL_RECYCLE: int = 3600
+    DATABASE_ECHO: bool = False
+
+    ADMIN_COOKIE_SECURE: bool = False
+    ADMIN_COOKIE_DOMAIN: str | None = '.elcsa.ru'
+    CORS_ALLOW_ORIGIN_REGEX: str = r'https?://([a-z0-9-]+\.)*admin\.elcsa\.ru(:\d+)?$'
+
+    DOCS_USERNAME: str = 'admin'
+    DOCS_PASSWORD: str = 'admin'
+
+    JWT_ACCESS_TTL_SECONDS: int = 8 * 60 * 60
+    ADMIN_JWT_ISSUER: str | None = 'admin-service'
+    JWT_AUDIENCE: str | None = None
+    JWT_ALGORITHM: str = 'RS256'
+
+    REDIS_HOST: str = 'localhost'
+    REDIS_PORT: int = 6379
+    REDIS_PASSWORD: str | None = None
+    REDIS_DB: int = 0
+
+    LEGAL_DOCS_S3_BUCKET: str = ''
+    LEGAL_DOCS_S3_REGION: str = 'us-east-1'
+    LEGAL_DOCS_S3_ACCESS_KEY_ID: str = ''
+    LEGAL_DOCS_S3_SECRET_ACCESS_KEY: str = ''
+    LEGAL_DOCS_S3_ENDPOINT_URL: str = ''
+    LEGAL_DOCS_S3_KEY_PREFIX: str = 'legal-docs'
+    LEGAL_DOCS_S3_PRESIGNED_TTL_SECONDS: int = 3600
+
+    RATE_LIMIT_REQUESTS: int = 60
+    RATE_LIMIT_WINDOW: int = 60
+
+    LOG_LEVEL: Literal['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] = 'INFO'
+    LOG_FORMAT: Literal['JSON', 'TEXT'] = 'TEXT'
+
+    @field_validator('VAULT_ADDR', mode='before')
+    @classmethod
+    def vault_addr_scheme(cls, v):
+        if v is None or not isinstance(v, str):
+            return v
+        return normalize_vault_base_url(v)
+
+    @field_validator('ADMIN_COOKIE_DOMAIN', mode='before')
+    @classmethod
+    def normalize_admin_cookie_domain(cls, v):
+        if v is None or (isinstance(v, str) and not v.strip()):
+            return '.elcsa.ru'
+        s = str(v).strip()
+        sl = s.lower()
+        if sl in ('.elcsa.ru', 'elcsa.ru'):
+            return '.elcsa.ru'
+        if sl.endswith('.elcsa.ru') and not sl.startswith('.'):
+            return '.elcsa.ru'
+        return s
+
+    @field_validator('REDIS_PASSWORD', mode='before')
+    @classmethod
+    def empty_redis_password_to_none(cls, v):
+        if v is None or (isinstance(v, str) and not v.strip()):
+            return None
+        return v
+
+    model_config = SettingsConfigDict(
+        env_file='.env',
+        env_file_encoding='utf-8',
+        case_sensitive=True,
+        extra='ignore',
+        populate_by_name=True,
+    )
+
+    @staticmethod
+    def _vault_kv(mapping: dict, *keys: str):
+        for k in keys:
+            if k in mapping and mapping[k] is not None:
+                return mapping[k]
+        return None
+
+    @classmethod
+    def _apply_s3_from_vault(cls, data: dict, s3: dict) -> None:
+        bucket = cls._vault_kv(s3, 'bucket_name', 'BUCKET_NAME', 'bucket', 'LEGAL_DOCS_S3_BUCKET')
+        endpoint = cls._vault_kv(s3, 's3_endpoint_url', 'S3_ENDPOINT_URL', 'endpoint_url', 'LEGAL_DOCS_S3_ENDPOINT_URL')
+        ak = cls._vault_kv(s3, 's3_access_key_id', 'S3_ACCESS_KEY_ID', 'ACCESS_KEY_ID', 'LEGAL_DOCS_S3_ACCESS_KEY_ID')
+        sk = cls._vault_kv(
+            s3, 's3_secret_access_key', 'S3_SECRET_ACCESS_KEY', 'SECRET_ACCESS_KEY', 'LEGAL_DOCS_S3_SECRET_ACCESS_KEY'
+        )
+        if bucket:
+            data['LEGAL_DOCS_S3_BUCKET'] = str(bucket).strip()
+        if endpoint:
+            data['LEGAL_DOCS_S3_ENDPOINT_URL'] = str(endpoint).strip()
+        if ak:
+            data['LEGAL_DOCS_S3_ACCESS_KEY_ID'] = str(ak).strip()
+        if sk:
+            data['LEGAL_DOCS_S3_SECRET_ACCESS_KEY'] = str(sk).strip()
+        region = cls._vault_kv(s3, 's3_region', 'S3_REGION', 'region', 'LEGAL_DOCS_S3_REGION')
+        if region:
+            data['LEGAL_DOCS_S3_REGION'] = str(region).strip()
+        prefix = cls._vault_kv(s3, 'key_prefix', 'LEGAL_DOCS_S3_KEY_PREFIX', 's3_key_prefix')
+        if prefix:
+            data['LEGAL_DOCS_S3_KEY_PREFIX'] = str(prefix).strip()
+
+    @model_validator(mode='before')
+    @classmethod
+    def load_from_vault(cls, data: dict):
+        if not isinstance(data, dict):
+            return data
+        addr_raw = data.get('VAULT_ADDR') or os.getenv('VAULT_ADDR') or 'http://localhost:8200'
+        addr = normalize_vault_base_url(addr_raw)
+        data['VAULT_ADDR'] = addr
+        role_id = data.get('VAULT_ROLE_ID') or os.getenv('VAULT_ROLE_ID')
+        secret_id = (
+            data.get('VAULT_SECRET_ID')
+            or data.get('VAULT_SECRET_TOKEN')
+            or os.getenv('VAULT_SECRET_ID')
+            or os.getenv('VAULT_SECRET_TOKEN')
+        )
+        namespace = data.get('VAULT_NAMESPACE')
+        if namespace is None:
+            namespace = os.getenv('VAULT_NAMESPACE')
+        namespace = namespace if namespace else None
+        mount = data.get('VAULT_MOUNT_POINT') or os.getenv('VAULT_MOUNT_POINT') or 'dev-secrets'
+
+        if not role_id or not secret_id:
+            raise RuntimeError(
+                'VAULT_ROLE_ID and VAULT_SECRET_ID (or VAULT_SECRET_TOKEN) are required for Vault AppRole'
+            )
+
+        data['VAULT_ROLE_ID'] = str(role_id).strip()
+        data['VAULT_SECRET_ID'] = str(secret_id).strip()
+
+        client = create_hvac_client_from_approle(
+            url=addr,
+            role_id=role_id,
+            secret_id=secret_id,
+            namespace=namespace,
+            timeout=5,
+        )
+
+        def read_secret(path: str) -> dict:
+            return read_kv2_secret(client=client, mount_point=mount, path=path)
+
+        def read_secret_optional(path: str) -> dict:
+            try:
+                return read_secret(path)
+            except Exception:
+                return {}
+
+        database = read_secret('database')
+        db_ci = {str(k).lower(): v for k, v in database.items()}
+
+        def db_nonempty(key: str) -> bool:
+            v = db_ci.get(key)
+            if v is None:
+                return False
+            if isinstance(v, str) and not v.strip():
+                return False
+            return True
+
+        required_db = ['host', 'name', 'user', 'password', 'port']
+        missing_db = [k for k in required_db if not db_nonempty(k)]
+        if missing_db:
+            raise RuntimeError(f'Vault secret database missing non-empty keys: {missing_db}')
+
+        data['DATABASE_HOST'] = str(db_ci['host']).strip()
+        data['DATABASE_PORT'] = int(db_ci['port'])
+        data['DATABASE_NAME'] = str(db_ci['name']).strip()
+        data['DATABASE_USER'] = str(db_ci['user']).strip()
+        data['DATABASE_PASSWORD'] = str(db_ci['password']).strip()
+
+        redis_secret = read_secret_optional('redis')
+        if redis_secret:
+            rd_ci = {str(k).lower(): v for k, v in redis_secret.items()}
+
+            def rd_set(field: str, env_key: str, *, as_int: bool = False) -> None:
+                v = rd_ci.get(field)
+                if v is None:
+                    return
+                if isinstance(v, str) and not v.strip():
+                    return
+                if as_int:
+                    data[env_key] = int(v)
+                else:
+                    data[env_key] = str(v).strip()
+
+            rd_set('host', 'REDIS_HOST')
+            rd_set('port', 'REDIS_PORT', as_int=True)
+            rd_set('password', 'REDIS_PASSWORD')
+            rd_set('db', 'REDIS_DB', as_int=True)
+
+        s3_path = (
+            data.get('VAULT_LEGAL_DOCS_S3_SECRET_PATH')
+            or os.getenv('VAULT_LEGAL_DOCS_S3_SECRET_PATH')
+            or 's3/legal-docs'
+        )
+        s3_secret = read_secret_optional(str(s3_path))
+        if s3_secret:
+            cls._apply_s3_from_vault(data, s3_secret)
+
+        return data
+
+    @property
+    def DATABASE_URL(self) -> str:
+        return (
+            f"postgresql+asyncpg://{self.DATABASE_USER}:{self.DATABASE_PASSWORD}"
+            f"@{self.DATABASE_HOST}:{self.DATABASE_PORT}/{self.DATABASE_NAME}"
+        )
+
+    @property
+    def REDIS_URL(self) -> str:
+        return f'redis://{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}'
+
+    @property
+    def EXCLUDED_PATHS(self) -> List[str]:
+        return ['/docs', '/redoc', '/openapi.json', '/ping', '/health']
+
+
+@lru_cache(maxsize=1)
+def get_settings() -> Settings:
+    return Settings()
+
+
+settings = get_settings()

src/infrastructure/context_vars/__init__.py

@@ -0,0 +1 @@
+from src.infrastructure.context_vars.trace_id import trace_id_var

src/infrastructure/context_vars/trace_id.py

@@ -0,0 +1,4 @@
+from contextvars import ContextVar
+
+
+trace_id_var: ContextVar[str] = ContextVar('trace_id', default='N/A')

src/infrastructure/crypto/wallet_crypto.py

@@ -0,0 +1,185 @@
+from __future__ import annotations
+
+import base64
+import os
+import re
+from dataclasses import dataclass
+
+from bip_utils import (
+    Bip39MnemonicGenerator,
+    Bip39SeedGenerator,
+    Bip39WordsNum,
+    Bip44,
+    Bip44Changes,
+    Bip44Coins,
+    Bip84,
+    Bip84Coins,
+)
+from cryptography.hazmat.primitives.ciphers.aead import AESGCM
+
+from src.infrastructure.vault.utils import create_hvac_client_from_approle, read_kv2_secret
+
+KEY_LEN = 32
+IV_LEN = 12
+TAG_LEN = 16
+
+DERIVATION_PATHS: dict[str, str] = {
+    'ETH': "m/44'/60'/0'/0/0",
+    'BSC': "m/44'/60'/0'/0/0",
+    'BTC': "m/84'/0'/0'/0/0",
+    'TRX': "m/44'/195'/0'/0/0",
+    'SOL': "m/44'/501'/0'/0'",
+}
+
+ALL_CHAINS: tuple[str, ...] = ('ETH', 'BSC', 'BTC', 'TRX', 'SOL')
+
+_master_key: bytes | None = None
+
+
+@dataclass(frozen=True)
+class DerivedWallet:
+    chain: str
+    address: str
+    derivation_path: str
+
+
+class CryptoNotReadyError(RuntimeError):
+    pass
+
+
+def load_master_key_from_vault(
+    *,
+    vault_addr: str,
+    vault_role_id: str,
+    vault_secret_id: str,
+    vault_namespace: str | None,
+    mount_point: str,
+    path: str,
+) -> None:
+    global _master_key
+    if _master_key is not None:
+        return
+
+    client = create_hvac_client_from_approle(
+        url=vault_addr,
+        role_id=vault_role_id,
+        secret_id=vault_secret_id,
+        namespace=vault_namespace,
+        timeout=5,
+    )
+    secrets = read_kv2_secret(client=client, mount_point=mount_point, path=path)
+    if not secrets:
+        raise RuntimeError(f'Failed to load crypto master key from Vault path {path}')
+
+    raw = secrets.get('key')
+    if not raw or not isinstance(raw, str):
+        if secrets.get('master_key') or secrets.get('MASTER_KEY'):
+            raise RuntimeError('Crypto master key misconfigured: alternate field present but canonical "key" missing')
+        raise RuntimeError('Crypto master key invalid: expected hex string in Vault field "key"')
+
+    if not re.fullmatch(r'[0-9a-fA-F]{64}', raw):
+        raise RuntimeError('Crypto master key invalid: must be 64-char hex (32 bytes)')
+
+    key = bytes.fromhex(raw)
+    if len(key) != KEY_LEN:
+        raise RuntimeError(f'Crypto master key invalid: got {len(key)} bytes, expected {KEY_LEN}')
+
+    _master_key = key
+
+
+def is_crypto_ready() -> bool:
+    return _master_key is not None and len(_master_key) == KEY_LEN
+
+
+def generate_mnemonic() -> str:
+    return str(Bip39MnemonicGenerator().FromWordsNumber(Bip39WordsNum.WORDS_NUM_12))
+
+
+def derive_all_addresses(mnemonic: str) -> list[DerivedWallet]:
+    seed_bytes = Bip39SeedGenerator(mnemonic).Generate()
+
+    eth_ctx = Bip44.FromSeed(seed_bytes, Bip44Coins.ETHEREUM)
+    eth_addr = (
+        eth_ctx.Purpose()
+        .Coin()
+        .Account(0)
+        .Change(Bip44Changes.CHAIN_EXT)
+        .AddressIndex(0)
+        .PublicKey()
+        .ToAddress()
+    )
+
+    btc_ctx = Bip84.FromSeed(seed_bytes, Bip84Coins.BITCOIN)
+    btc_addr = (
+        btc_ctx.Purpose()
+        .Coin()
+        .Account(0)
+        .Change(Bip44Changes.CHAIN_EXT)
+        .AddressIndex(0)
+        .PublicKey()
+        .ToAddress()
+    )
+
+    trx_ctx = Bip44.FromSeed(seed_bytes, Bip44Coins.TRON)
+    trx_addr = (
+        trx_ctx.Purpose()
+        .Coin()
+        .Account(0)
+        .Change(Bip44Changes.CHAIN_EXT)
+        .AddressIndex(0)
+        .PublicKey()
+        .ToAddress()
+    )
+
+    sol_ctx = Bip44.FromSeed(seed_bytes, Bip44Coins.SOLANA)
+    sol_addr = (
+        sol_ctx.Purpose()
+        .Coin()
+        .Account(0)
+        .Change(Bip44Changes.CHAIN_EXT)
+        .AddressIndex(0)
+        .PublicKey()
+        .ToAddress()
+    )
+
+    return [
+        DerivedWallet(chain='ETH', address=eth_addr, derivation_path=DERIVATION_PATHS['ETH']),
+        DerivedWallet(chain='BSC', address=eth_addr, derivation_path=DERIVATION_PATHS['BSC']),
+        DerivedWallet(chain='BTC', address=btc_addr, derivation_path=DERIVATION_PATHS['BTC']),
+        DerivedWallet(chain='TRX', address=trx_addr, derivation_path=DERIVATION_PATHS['TRX']),
+        DerivedWallet(chain='SOL', address=sol_addr, derivation_path=DERIVATION_PATHS['SOL']),
+    ]
+
+
+def encrypt_mnemonic(plaintext: str) -> str:
+    if _master_key is None:
+        raise CryptoNotReadyError('Crypto service not ready')
+    if not plaintext:
+        raise ValueError('encrypt_mnemonic: plaintext must be non-empty')
+
+    iv = os.urandom(IV_LEN)
+    aesgcm = AESGCM(_master_key)
+    ct_with_tag = aesgcm.encrypt(iv, plaintext.encode('utf-8'), None)
+    tag = ct_with_tag[-TAG_LEN:]
+    ct = ct_with_tag[:-TAG_LEN]
+    return base64.b64encode(iv + ct + tag).decode('ascii')
+
+
+def decrypt_mnemonic(blob: str) -> str:
+    if _master_key is None:
+        raise CryptoNotReadyError('Crypto service not ready')
+    if not blob:
+        raise ValueError('decrypt_mnemonic: blob must be non-empty')
+
+    raw = base64.b64decode(blob)
+    if len(raw) < IV_LEN + TAG_LEN + 1:
+        raise ValueError('decrypt_mnemonic: blob too short')
+
+    iv = raw[:IV_LEN]
+    tag = raw[-TAG_LEN:]
+    ct = raw[IV_LEN:-TAG_LEN]
+    aesgcm = AESGCM(_master_key)
+    try:
+        return aesgcm.decrypt(iv, ct + tag, None).decode('utf-8')
+    except Exception as exc:
+        raise ValueError('decrypt_mnemonic: authentication failed') from exc

src/infrastructure/database/__init__.py

@@ -0,0 +1 @@
+from src.infrastructure.database.unit_of_work import UnitOfWork

src/infrastructure/database/context.py

@@ -0,0 +1,22 @@
+from sqlalchemy.ext.asyncio import async_sessionmaker
+from sqlalchemy.ext.asyncio.engine import create_async_engine
+from sqlalchemy.ext.asyncio.session import AsyncSession
+from typing import AsyncGenerator
+from src.infrastructure.config import settings
+
+
+engine = create_async_engine(
+    settings.DATABASE_URL,
+    pool_size=settings.DATABASE_POOL_SIZE,
+    max_overflow=settings.DATABASE_MAX_OVERFLOW,
+    pool_timeout=settings.DATABASE_POOL_TIMEOUT,
+    pool_recycle=settings.DATABASE_POOL_RECYCLE,
+    echo=settings.DATABASE_ECHO
+)
+
+async_session_maker = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)
+
+
+async def get_session() -> AsyncGenerator[AsyncSession, None]:
+    async with async_session_maker() as session:
+        yield session

src/infrastructure/database/decorators/__init__.py

@@ -0,0 +1 @@
+from src.infrastructure.database.decorators.transactional import transactional

src/infrastructure/database/decorators/transactional.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+from functools import wraps
+from typing import Callable, Awaitable, TypeVar, ParamSpec
+
+
+P = ParamSpec("P")
+R = TypeVar("R")
+
+
+def transactional(method: Callable[P, Awaitable[R]]) -> Callable[P, Awaitable[R]]:
+    @wraps(method)
+    async def wrapper(self, *args: P.args, **kwargs: P.kwargs) -> R:
+        async with self._unit_of_work:
+            return await method(self, *args, **kwargs)
+    return wrapper

src/infrastructure/database/models/__init__.py

@@ -0,0 +1,19 @@
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.user import UserModel
+from src.infrastructure.database.models.admin_user import AdminUserModel
+from src.infrastructure.database.models.admin_session import AdminSessionModel
+from src.infrastructure.database.models.legal_entity import LegalEntityModel
+from src.infrastructure.database.models.organization_wallet import OrganizationWalletModel
+from src.infrastructure.database.models.organization_document import OrganizationDocumentModel
+from src.infrastructure.database.models.purchase_request import PurchaseRequestModel
+
+__all__ = [
+    'Base',
+    'UserModel',
+    'AdminUserModel',
+    'AdminSessionModel',
+    'LegalEntityModel',
+    'OrganizationWalletModel',
+    'OrganizationDocumentModel',
+    'PurchaseRequestModel',
+]

src/infrastructure/database/models/admin_session.py

@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+from datetime import datetime, timezone
+
+from sqlalchemy import DateTime, ForeignKey, Index, String
+from sqlalchemy.orm import Mapped, mapped_column
+from ulid import ULID
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import AuditTimestampsMixin, UlidPrimaryKeyMixin
+
+
+class AdminSessionModel(Base, UlidPrimaryKeyMixin, AuditTimestampsMixin):
+    __tablename__ = 'admin_sessions'
+
+    sid: Mapped[str] = mapped_column(
+        String(26),
+        unique=True,
+        index=True,
+        nullable=False,
+        default=lambda: str(ULID()),
+    )
+    admin_user_id: Mapped[str] = mapped_column(
+        String(26),
+        ForeignKey('admin_users.id', ondelete='CASCADE'),
+        index=True,
+        nullable=False,
+    )
+    device_id: Mapped[str] = mapped_column(String(26), nullable=False, index=True)
+    user_agent: Mapped[str | None] = mapped_column(String(500), nullable=True)
+    first_ip: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    last_ip: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    last_seen_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        default=lambda: datetime.now(timezone.utc),
+    )
+    revoked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    refresh_jti_hash: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    refresh_expires_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+
+
+Index('ux_admin_sessions_user_device', AdminSessionModel.admin_user_id, AdminSessionModel.device_id, unique=True)

src/infrastructure/database/models/admin_user.py

@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import Boolean, DateTime, String
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import AuditTimestampsMixin, UlidPrimaryKeyMixin
+
+
+class AdminUserModel(Base, UlidPrimaryKeyMixin, AuditTimestampsMixin):
+    __tablename__ = 'admin_users'
+
+    email: Mapped[str] = mapped_column(String(255), nullable=False, unique=True, index=True)
+    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
+    first_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    last_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    role: Mapped[str] = mapped_column(String(32), nullable=False, server_default='operator', default='operator')
+    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default='true', default=True)
+    last_login_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

src/infrastructure/database/models/base.py

@@ -0,0 +1,19 @@
+from sqlalchemy.ext.asyncio import AsyncAttrs
+from sqlalchemy.orm import DeclarativeBase
+
+
+class Base(AsyncAttrs, DeclarativeBase):
+    __abstract__ = True
+
+    def __repr__(self) -> str:
+        class_name = self.__class__.__name__
+        attributes = ', '.join(f"{col.name}={getattr(self, col.name, None)!r}"
+                               for col in self.__table__.columns)
+        return f"<{class_name}({attributes})>"
+
+    def __str__(self) -> str:
+        class_name = self.__class__.__name__
+        attributes = ', '.join(f"{col.name}={getattr(self, col.name)}"
+                               for col in self.__table__.columns
+                               if getattr(self, col.name) is not None)
+        return f"{class_name}({attributes})"

src/infrastructure/database/models/legal_entity.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Any
+
+from sqlalchemy import Boolean, DateTime, ForeignKey, String, Text
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import AuditTimestampsMixin, UlidPrimaryKeyMixin
+
+
+class LegalEntityModel(Base, UlidPrimaryKeyMixin, AuditTimestampsMixin):
+    __tablename__ = 'legal_entities'
+
+    user_id: Mapped[str] = mapped_column(
+        String(26),
+        ForeignKey('users.id', ondelete='RESTRICT'),
+        nullable=False,
+        unique=True,
+        index=True,
+    )
+    name: Mapped[str] = mapped_column(String(512), nullable=False)
+    short_name: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    inn: Mapped[str] = mapped_column(String(12), nullable=False, index=True)
+    ogrn: Mapped[str | None] = mapped_column(String(15), nullable=True)
+    kpp: Mapped[str | None] = mapped_column(String(9), nullable=True)
+    legal_address: Mapped[str | None] = mapped_column(Text, nullable=True)
+    actual_address: Mapped[str | None] = mapped_column(Text, nullable=True)
+    bank_details: Mapped[dict[str, Any] | None] = mapped_column(JSONB, nullable=True)
+    contact_person: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    contact_phone: Mapped[str | None] = mapped_column(String(16), nullable=True)
+    status: Mapped[str] = mapped_column(String(32), nullable=False, server_default='active', default='active')
+    kyc_verified: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default='true', default=True)
+    kyc_verified_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    encrypted_mnemonic: Mapped[str | None] = mapped_column(Text, nullable=True)
+    created_by: Mapped[str | None] = mapped_column(
+        String(26),
+        ForeignKey('admin_users.id'),
+        nullable=True,
+    )

src/infrastructure/database/models/mixins/__init__.py

@@ -0,0 +1,3 @@
+from src.infrastructure.database.models.mixins.audit import AuditTimestampsMixin
+from src.infrastructure.database.models.mixins.ulid import UlidPrimaryKeyMixin
+from src.infrastructure.database.models.mixins.soft_delete import SoftDeleteMixin

src/infrastructure/database/models/mixins/audit.py

@@ -0,0 +1,16 @@
+from sqlalchemy import DateTime, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+
+class AuditTimestampsMixin:
+    created_at: Mapped[DateTime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        server_default=func.now(),
+    )
+    updated_at: Mapped[DateTime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        server_default=func.now(),
+        onupdate=func.now(),
+    )

src/infrastructure/database/models/mixins/soft_delete.py

@@ -0,0 +1,6 @@
+from sqlalchemy import Boolean
+from sqlalchemy.orm import Mapped, mapped_column
+
+
+class SoftDeleteMixin:
+    is_deleted: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default='false', default=False)

src/infrastructure/database/models/mixins/ulid.py

@@ -0,0 +1,8 @@
+from sqlalchemy import String
+from sqlalchemy.orm import Mapped, mapped_column
+from ulid import ULID
+
+
+class UlidPrimaryKeyMixin:
+
+    id: Mapped[str] = mapped_column(String(26), primary_key=True, default=lambda: str(ULID()))

src/infrastructure/database/models/organization_document.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import BigInteger, DateTime, ForeignKey, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import UlidPrimaryKeyMixin
+
+
+class OrganizationDocumentModel(Base, UlidPrimaryKeyMixin):
+    __tablename__ = 'organization_documents'
+
+    organization_id: Mapped[str] = mapped_column(
+        String(26),
+        ForeignKey('legal_entities.id', ondelete='RESTRICT'),
+        nullable=False,
+        index=True,
+    )
+    document_type: Mapped[str] = mapped_column(String(64), nullable=False)
+    file_name: Mapped[str] = mapped_column(String(512), nullable=False)
+    s3_key: Mapped[str] = mapped_column(String(1024), nullable=False)
+    content_type: Mapped[str] = mapped_column(String(128), nullable=False)
+    file_size_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
+    uploaded_by: Mapped[str | None] = mapped_column(
+        String(26),
+        ForeignKey('admin_users.id'),
+        nullable=True,
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        server_default=func.now(),
+    )

src/infrastructure/database/models/organization_wallet.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, ForeignKey, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import UlidPrimaryKeyMixin
+
+
+class OrganizationWalletModel(Base, UlidPrimaryKeyMixin):
+    __tablename__ = 'organization_wallets'
+
+    organization_id: Mapped[str] = mapped_column(
+        String(26),
+        ForeignKey('legal_entities.id', ondelete='RESTRICT'),
+        nullable=False,
+        index=True,
+    )
+    chain: Mapped[str] = mapped_column(String(16), nullable=False)
+    address: Mapped[str] = mapped_column(String(128), nullable=False, index=True)
+    derivation_path: Mapped[str] = mapped_column(String(64), nullable=False)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        server_default=func.now(),
+    )

src/infrastructure/database/models/purchase_request.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+from datetime import datetime
+from decimal import Decimal
+
+from sqlalchemy import DateTime, ForeignKey, Numeric, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import AuditTimestampsMixin, UlidPrimaryKeyMixin
+
+
+class PurchaseRequestModel(Base, UlidPrimaryKeyMixin, AuditTimestampsMixin):
+    __tablename__ = 'purchase_requests'
+
+    organization_id: Mapped[str] = mapped_column(
+        String(26),
+        ForeignKey('legal_entities.id', ondelete='RESTRICT'),
+        nullable=False,
+        index=True,
+    )
+    status: Mapped[str] = mapped_column(String(32), nullable=False, server_default='submitted', default='submitted')
+    usdt_amount: Mapped[Decimal] = mapped_column(Numeric(18, 8), nullable=False)
+    rub_amount: Mapped[Decimal | None] = mapped_column(Numeric(18, 2), nullable=True)
+    exchange_rate: Mapped[Decimal | None] = mapped_column(Numeric(18, 8), nullable=True)
+    service_fee_percent: Mapped[Decimal | None] = mapped_column(Numeric(5, 2), nullable=True)
+    comment: Mapped[str | None] = mapped_column(Text, nullable=True)
+    admin_comment: Mapped[str | None] = mapped_column(Text, nullable=True)
+    target_wallet_chain: Mapped[str | None] = mapped_column(String(16), nullable=True, server_default='ETH')
+    target_wallet_address: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    tx_hash: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    assigned_to: Mapped[str | None] = mapped_column(
+        String(26),
+        ForeignKey('admin_users.id'),
+        nullable=True,
+    )
+    completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

src/infrastructure/database/models/user.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from sqlalchemy import Boolean, Date, String, DateTime, Text
+from sqlalchemy.orm import Mapped,mapped_column
+from src.infrastructure.database.models.base import Base
+from src.infrastructure.database.models.mixins import UlidPrimaryKeyMixin,AuditTimestampsMixin,SoftDeleteMixin
+
+
+class UserModel(Base, UlidPrimaryKeyMixin, AuditTimestampsMixin, SoftDeleteMixin):
+    __tablename__ = 'users'
+
+    email: Mapped[str] = mapped_column(String(255), nullable=False, unique=True, index=True)
+    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
+
+    last_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    first_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    middle_name: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    birth_date: Mapped[Date | None] = mapped_column(Date, nullable=True)
+
+    encrypted_mnemonic: Mapped[str | None] = mapped_column(Text, nullable=True)
+    phone: Mapped[str | None] = mapped_column(String(16), nullable=True)
+
+    passport_data: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    inn: Mapped[str | None] = mapped_column(String(12), nullable=True)
+    erc20: Mapped[str | None] = mapped_column(String(255), nullable=True)
+
+    avatar_link: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    kyc_verified: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default='false', default=False)
+    kyc_verified_at: Mapped[DateTime | None] = mapped_column(DateTime(timezone=True), nullable=True)

src/infrastructure/database/repositories/__init__.py

@@ -0,0 +1,17 @@
+from src.infrastructure.database.repositories.admin_user_repository import AdminUserRepository
+from src.infrastructure.database.repositories.admin_session_repository import AdminSessionRepository
+from src.infrastructure.database.repositories.user_repository import UserRepository
+from src.infrastructure.database.repositories.legal_entity_repository import LegalEntityRepository
+from src.infrastructure.database.repositories.organization_wallet_repository import OrganizationWalletRepository
+from src.infrastructure.database.repositories.organization_document_repository import OrganizationDocumentRepository
+from src.infrastructure.database.repositories.purchase_request_repository import PurchaseRequestRepository
+
+__all__ = [
+    'AdminUserRepository',
+    'AdminSessionRepository',
+    'UserRepository',
+    'LegalEntityRepository',
+    'OrganizationWalletRepository',
+    'OrganizationDocumentRepository',
+    'PurchaseRequestRepository',
+]

src/infrastructure/database/repositories/admin_session_repository.py

@@ -0,0 +1,120 @@
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Optional
+
+from sqlalchemy import select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from src.application.abstractions.repositories import IAdminSessionRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.admin_session import AdminSessionEntity
+from src.infrastructure.database.models import AdminSessionModel
+
+
+class AdminSessionRepository(IAdminSessionRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: AdminSessionModel) -> AdminSessionEntity:
+        return AdminSessionEntity(
+            sid=m.sid,
+            admin_user_id=m.admin_user_id,
+            device_id=m.device_id,
+            revoked_at=m.revoked_at,
+            last_seen_at=m.last_seen_at,
+            refresh_jti_hash=m.refresh_jti_hash,
+            refresh_expires_at=m.refresh_expires_at,
+            user_agent=m.user_agent,
+            first_ip=m.first_ip,
+            last_ip=m.last_ip,
+        )
+
+    async def get_by_sid(self, sid: str) -> Optional[AdminSessionEntity]:
+        res = await self._session.execute(select(AdminSessionModel).where(AdminSessionModel.sid == sid))
+        m = res.scalar_one_or_none()
+        return self._to_entity(m) if m else None
+
+    async def upsert_by_device(
+        self,
+        *,
+        admin_user_id: str,
+        device_id: str,
+        sid: str,
+        refresh_jti_hash: str,
+        refresh_expires_at: datetime,
+        user_agent: str | None,
+        ip: str | None,
+        now: datetime,
+    ) -> AdminSessionEntity:
+        res = await self._session.execute(
+            select(AdminSessionModel).where(
+                AdminSessionModel.admin_user_id == admin_user_id,
+                AdminSessionModel.device_id == device_id,
+            )
+        )
+        m = res.scalar_one_or_none()
+        if m is None:
+            m = AdminSessionModel(
+                sid=sid,
+                admin_user_id=admin_user_id,
+                device_id=device_id,
+                revoked_at=None,
+                last_seen_at=now,
+                refresh_jti_hash=refresh_jti_hash,
+                refresh_expires_at=refresh_expires_at,
+                user_agent=user_agent,
+                first_ip=ip,
+                last_ip=ip,
+            )
+            self._session.add(m)
+        else:
+            m.sid = sid
+            m.revoked_at = None
+            m.last_seen_at = now
+            m.refresh_jti_hash = refresh_jti_hash
+            m.refresh_expires_at = refresh_expires_at
+            m.user_agent = user_agent
+            m.last_ip = ip
+        await self._session.flush()
+        return self._to_entity(m)
+
+    async def revoke_by_sid(self, sid: str, now: datetime) -> None:
+        await self._session.execute(
+            update(AdminSessionModel)
+            .where(AdminSessionModel.sid == sid, AdminSessionModel.revoked_at.is_(None))
+            .values(revoked_at=now)
+        )
+        await self._session.flush()
+
+    async def rotate_refresh_if_match(
+        self,
+        *,
+        sid: str,
+        old_jti_hash: str,
+        new_jti_hash: str,
+        new_refresh_expires_at: datetime,
+        now: datetime,
+        ip: str | None,
+        user_agent: str | None,
+    ) -> bool:
+        values = {
+            'refresh_jti_hash': new_jti_hash,
+            'refresh_expires_at': new_refresh_expires_at,
+            'last_seen_at': now,
+            'user_agent': user_agent,
+        }
+        if ip is not None:
+            values['last_ip'] = ip
+        res = await self._session.execute(
+            update(AdminSessionModel)
+            .where(
+                AdminSessionModel.sid == sid,
+                AdminSessionModel.revoked_at.is_(None),
+                AdminSessionModel.refresh_jti_hash == old_jti_hash,
+            )
+            .values(**values)
+        )
+        await self._session.flush()
+        return (res.rowcount or 0) > 0

src/infrastructure/database/repositories/admin_user_repository.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from fastapi import status
+from sqlalchemy import func, select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import IntegrityError, SQLAlchemyError
+
+from src.application.abstractions.repositories import IAdminUserRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.admin_user import AdminUserEntity
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import AdminUserModel
+
+
+class AdminUserRepository(IAdminUserRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: AdminUserModel) -> AdminUserEntity:
+        return AdminUserEntity(
+            id=m.id,
+            email=m.email,
+            password_hash=m.password_hash,
+            first_name=m.first_name,
+            last_name=m.last_name,
+            role=m.role,
+            is_active=m.is_active,
+            last_login_at=m.last_login_at,
+            created_at=m.created_at,
+            updated_at=m.updated_at,
+        )
+
+    async def get_by_email(self, email: str) -> AdminUserEntity:
+        try:
+            stmt = select(AdminUserModel).where(func.lower(AdminUserModel.email) == email.lower())
+            result = await self._session.execute(stmt)
+            user = result.scalar_one_or_none()
+            if user is None:
+                raise ApplicationException(status_code=status.HTTP_404_NOT_FOUND, message='Admin user not found')
+            return self._to_entity(user)
+        except ApplicationException:
+            raise
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def get_by_id(self, admin_user_id: str) -> AdminUserEntity:
+        try:
+            stmt = select(AdminUserModel).where(AdminUserModel.id == admin_user_id)
+            result = await self._session.execute(stmt)
+            user = result.scalar_one_or_none()
+            if user is None:
+                raise ApplicationException(status_code=status.HTTP_404_NOT_FOUND, message='Admin user not found')
+            return self._to_entity(user)
+        except ApplicationException:
+            raise
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def update_last_login(self, admin_user_id: str, *, last_login_at: datetime) -> None:
+        await self._session.execute(
+            update(AdminUserModel)
+            .where(AdminUserModel.id == admin_user_id)
+            .values(last_login_at=last_login_at)
+        )
+        await self._session.flush()

src/infrastructure/database/repositories/legal_entity_repository.py

@@ -0,0 +1,123 @@
+from __future__ import annotations
+
+from typing import Any
+
+from fastapi import status
+from sqlalchemy import func, select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import IntegrityError, SQLAlchemyError
+
+from src.application.abstractions.repositories import ILegalEntityRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.organization import LegalEntityEntity
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import LegalEntityModel
+
+
+class LegalEntityRepository(ILegalEntityRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: LegalEntityModel) -> LegalEntityEntity:
+        return LegalEntityEntity(
+            id=m.id,
+            user_id=m.user_id,
+            name=m.name,
+            short_name=m.short_name,
+            inn=m.inn,
+            ogrn=m.ogrn,
+            kpp=m.kpp,
+            legal_address=m.legal_address,
+            actual_address=m.actual_address,
+            bank_details=m.bank_details,
+            contact_person=m.contact_person,
+            contact_phone=m.contact_phone,
+            status=m.status,
+            kyc_verified=m.kyc_verified,
+            kyc_verified_at=m.kyc_verified_at,
+            encrypted_mnemonic=m.encrypted_mnemonic,
+            created_by=m.created_by,
+            created_at=m.created_at,
+            updated_at=m.updated_at,
+        )
+
+    async def create(
+        self,
+        *,
+        user_id: str,
+        name: str,
+        short_name: str | None,
+        inn: str,
+        ogrn: str | None,
+        kpp: str | None,
+        legal_address: str | None,
+        actual_address: str | None,
+        bank_details: dict[str, Any] | None,
+        contact_person: str | None,
+        contact_phone: str | None,
+        status: str,
+        kyc_verified: bool,
+        kyc_verified_at,
+        created_by: str | None,
+    ) -> LegalEntityEntity:
+        entity = LegalEntityModel(
+            user_id=user_id,
+            name=name,
+            short_name=short_name,
+            inn=inn,
+            ogrn=ogrn,
+            kpp=kpp,
+            legal_address=legal_address,
+            actual_address=actual_address,
+            bank_details=bank_details,
+            contact_person=contact_person,
+            contact_phone=contact_phone,
+            status=status,
+            kyc_verified=kyc_verified,
+            kyc_verified_at=kyc_verified_at,
+            created_by=created_by,
+        )
+        self._session.add(entity)
+        try:
+            await self._session.flush()
+            return self._to_entity(entity)
+        except IntegrityError:
+            raise ApplicationException(status_code=409, message='Organization with this INN or user already exists')
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def get_by_id(self, organization_id: str) -> LegalEntityEntity:
+        res = await self._session.execute(select(LegalEntityModel).where(LegalEntityModel.id == organization_id))
+        m = res.scalar_one_or_none()
+        if m is None:
+            raise ApplicationException(status_code=404, message='Organization not found')
+        return self._to_entity(m)
+
+    async def list_all(self, *, limit: int, offset: int) -> list[LegalEntityEntity]:
+        res = await self._session.execute(
+            select(LegalEntityModel).order_by(LegalEntityModel.created_at.desc()).limit(limit).offset(offset)
+        )
+        return [self._to_entity(m) for m in res.scalars().all()]
+
+    async def count_all(self) -> int:
+        res = await self._session.execute(select(func.count()).select_from(LegalEntityModel))
+        return int(res.scalar_one())
+
+    async def update(self, organization_id: str, *, values: dict[str, Any]) -> LegalEntityEntity:
+        if not values:
+            return await self.get_by_id(organization_id)
+        await self._session.execute(
+            update(LegalEntityModel).where(LegalEntityModel.id == organization_id).values(**values)
+        )
+        await self._session.flush()
+        return await self.get_by_id(organization_id)
+
+    async def set_encrypted_mnemonic(self, organization_id: str, encrypted_mnemonic: str) -> None:
+        await self._session.execute(
+            update(LegalEntityModel)
+            .where(LegalEntityModel.id == organization_id)
+            .values(encrypted_mnemonic=encrypted_mnemonic)
+        )
+        await self._session.flush()

src/infrastructure/database/repositories/organization_document_repository.py

@@ -0,0 +1,66 @@
+from __future__ import annotations
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import SQLAlchemyError
+
+from src.application.abstractions.repositories import IOrganizationDocumentRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.organization import OrganizationDocumentEntity
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import OrganizationDocumentModel
+
+
+class OrganizationDocumentRepository(IOrganizationDocumentRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: OrganizationDocumentModel) -> OrganizationDocumentEntity:
+        return OrganizationDocumentEntity(
+            id=m.id,
+            organization_id=m.organization_id,
+            document_type=m.document_type,
+            file_name=m.file_name,
+            s3_key=m.s3_key,
+            content_type=m.content_type,
+            file_size_bytes=m.file_size_bytes,
+            uploaded_by=m.uploaded_by,
+            created_at=m.created_at,
+        )
+
+    async def create(self, document: OrganizationDocumentEntity) -> OrganizationDocumentEntity:
+        model = OrganizationDocumentModel(
+            id=document.id,
+            organization_id=document.organization_id,
+            document_type=document.document_type,
+            file_name=document.file_name,
+            s3_key=document.s3_key,
+            content_type=document.content_type,
+            file_size_bytes=document.file_size_bytes,
+            uploaded_by=document.uploaded_by,
+        )
+        self._session.add(model)
+        try:
+            await self._session.flush()
+            return self._to_entity(model)
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def get_by_id(self, document_id: str) -> OrganizationDocumentEntity:
+        res = await self._session.execute(
+            select(OrganizationDocumentModel).where(OrganizationDocumentModel.id == document_id)
+        )
+        m = res.scalar_one_or_none()
+        if m is None:
+            raise ApplicationException(status_code=404, message='Document not found')
+        return self._to_entity(m)
+
+    async def list_by_organization(self, organization_id: str) -> list[OrganizationDocumentEntity]:
+        res = await self._session.execute(
+            select(OrganizationDocumentModel)
+            .where(OrganizationDocumentModel.organization_id == organization_id)
+            .order_by(OrganizationDocumentModel.created_at.desc())
+        )
+        return [self._to_entity(m) for m in res.scalars().all()]

src/infrastructure/database/repositories/organization_wallet_repository.py

@@ -0,0 +1,64 @@
+from __future__ import annotations
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import IntegrityError, SQLAlchemyError
+
+from src.application.abstractions.repositories import IOrganizationWalletRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.organization import OrganizationWalletEntity
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import OrganizationWalletModel
+
+
+class OrganizationWalletRepository(IOrganizationWalletRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: OrganizationWalletModel) -> OrganizationWalletEntity:
+        return OrganizationWalletEntity(
+            id=m.id,
+            organization_id=m.organization_id,
+            chain=m.chain,
+            address=m.address,
+            derivation_path=m.derivation_path,
+            created_at=m.created_at,
+        )
+
+    async def create_many(self, wallets: list[OrganizationWalletEntity]) -> list[OrganizationWalletEntity]:
+        models = [
+            OrganizationWalletModel(
+                id=w.id,
+                organization_id=w.organization_id,
+                chain=w.chain,
+                address=w.address,
+                derivation_path=w.derivation_path,
+            )
+            for w in wallets
+        ]
+        self._session.add_all(models)
+        try:
+            await self._session.flush()
+            return [self._to_entity(m) for m in models]
+        except IntegrityError:
+            raise ApplicationException(status_code=409, message='Wallets already exist for organization')
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def list_by_organization(self, organization_id: str) -> list[OrganizationWalletEntity]:
+        res = await self._session.execute(
+            select(OrganizationWalletModel)
+            .where(OrganizationWalletModel.organization_id == organization_id)
+            .order_by(OrganizationWalletModel.chain)
+        )
+        return [self._to_entity(m) for m in res.scalars().all()]
+
+    async def exists_for_organization(self, organization_id: str) -> bool:
+        res = await self._session.execute(
+            select(OrganizationWalletModel.id)
+            .where(OrganizationWalletModel.organization_id == organization_id)
+            .limit(1)
+        )
+        return res.scalar_one_or_none() is not None

src/infrastructure/database/repositories/purchase_request_repository.py

@@ -0,0 +1,81 @@
+from __future__ import annotations
+
+from typing import Any
+
+from sqlalchemy import func, select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import SQLAlchemyError
+
+from src.application.abstractions.repositories import IPurchaseRequestRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities.organization import PurchaseRequestEntity
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import PurchaseRequestModel
+
+
+class PurchaseRequestRepository(IPurchaseRequestRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, m: PurchaseRequestModel) -> PurchaseRequestEntity:
+        return PurchaseRequestEntity(
+            id=m.id,
+            organization_id=m.organization_id,
+            status=m.status,
+            usdt_amount=m.usdt_amount,
+            rub_amount=m.rub_amount,
+            exchange_rate=m.exchange_rate,
+            service_fee_percent=m.service_fee_percent,
+            comment=m.comment,
+            admin_comment=m.admin_comment,
+            target_wallet_chain=m.target_wallet_chain,
+            target_wallet_address=m.target_wallet_address,
+            tx_hash=m.tx_hash,
+            assigned_to=m.assigned_to,
+            created_at=m.created_at,
+            updated_at=m.updated_at,
+            completed_at=m.completed_at,
+        )
+
+    def _apply_filters(self, stmt, *, status: str | None, organization_id: str | None):
+        if status:
+            stmt = stmt.where(PurchaseRequestModel.status == status)
+        if organization_id:
+            stmt = stmt.where(PurchaseRequestModel.organization_id == organization_id)
+        return stmt
+
+    async def get_by_id(self, request_id: str) -> PurchaseRequestEntity:
+        res = await self._session.execute(select(PurchaseRequestModel).where(PurchaseRequestModel.id == request_id))
+        m = res.scalar_one_or_none()
+        if m is None:
+            raise ApplicationException(status_code=404, message='Purchase request not found')
+        return self._to_entity(m)
+
+    async def list_all(
+        self,
+        *,
+        status: str | None,
+        organization_id: str | None,
+        limit: int,
+        offset: int,
+    ) -> list[PurchaseRequestEntity]:
+        stmt = select(PurchaseRequestModel).order_by(PurchaseRequestModel.created_at.desc())
+        stmt = self._apply_filters(stmt, status=status, organization_id=organization_id)
+        res = await self._session.execute(stmt.limit(limit).offset(offset))
+        return [self._to_entity(m) for m in res.scalars().all()]
+
+    async def count_all(self, *, status: str | None, organization_id: str | None) -> int:
+        stmt = select(func.count()).select_from(PurchaseRequestModel)
+        stmt = self._apply_filters(stmt, status=status, organization_id=organization_id)
+        res = await self._session.execute(stmt)
+        return int(res.scalar_one())
+
+    async def update(self, request_id: str, *, values: dict[str, Any]) -> PurchaseRequestEntity:
+        if not values:
+            return await self.get_by_id(request_id)
+        await self._session.execute(
+            update(PurchaseRequestModel).where(PurchaseRequestModel.id == request_id).values(**values)
+        )
+        await self._session.flush()
+        return await self.get_by_id(request_id)

src/infrastructure/database/repositories/user_repository.py

@@ -0,0 +1,94 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from fastapi import status
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.exc import IntegrityError, SQLAlchemyError
+
+from src.application.abstractions.repositories import IUserRepository
+from src.application.contracts import ILogger
+from src.application.domain.entities import UserEntity
+from src.application.domain.enums.account_type import AccountType
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.database.models import UserModel
+
+
+class UserRepository(IUserRepository):
+    def __init__(self, session: AsyncSession, logger: ILogger):
+        self._session = session
+        self._logger = logger
+
+    def _to_entity(self, user: UserModel) -> UserEntity:
+        return UserEntity(
+            id=user.id,
+            email=user.email,
+            password_hash=user.password_hash,
+            first_name=user.first_name,
+            middle_name=user.middle_name,
+            last_name=user.last_name,
+            birth_date=user.birth_date,
+            encrypted_mnemonic=user.encrypted_mnemonic,
+            phone=user.phone,
+            passport_data=user.passport_data,
+            inn=user.inn,
+            erc20=user.erc20,
+            avatar_link=user.avatar_link,
+            kyc_verified=user.kyc_verified,
+            is_deleted=user.is_deleted,
+            created_at=user.created_at,
+            updated_at=user.updated_at,
+            kyc_verified_at=user.kyc_verified_at,
+            account_type=user.account_type,
+            provisioned_by=user.provisioned_by,
+            provisioned_at=user.provisioned_at,
+        )
+
+    async def create_legal_entity_user(
+        self,
+        *,
+        email: str,
+        password_hash: str,
+        provisioned_by: str,
+        provisioned_at: datetime,
+        kyc_verified: bool,
+        kyc_verified_at: datetime,
+    ) -> UserEntity:
+        user = UserModel(
+            email=email,
+            password_hash=password_hash,
+            account_type=AccountType.LEGAL_ENTITY,
+            provisioned_by=provisioned_by,
+            provisioned_at=provisioned_at,
+            kyc_verified=kyc_verified,
+            kyc_verified_at=kyc_verified_at,
+        )
+        self._session.add(user)
+        try:
+            await self._session.flush()
+            return self._to_entity(user)
+        except IntegrityError:
+            raise ApplicationException(status_code=409, message='User with this email already exists')
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def get_user_by_email(self, email: str) -> UserEntity:
+        try:
+            stmt = select(UserModel).where(UserModel.email == email, UserModel.is_deleted.is_(False))
+            result = await self._session.execute(stmt)
+            user = result.scalar_one_or_none()
+            if user is None:
+                raise ApplicationException(status_code=404, message='User not found')
+            return self._to_entity(user)
+        except ApplicationException:
+            raise
+        except SQLAlchemyError as exc:
+            self._logger.exception(str(exc))
+            raise ApplicationException(status_code=500, message='Database error')
+
+    async def exists_by_email(self, email: str) -> bool:
+        stmt = select(UserModel.id).where(UserModel.email == email, UserModel.is_deleted.is_(False)).limit(1)
+        result = await self._session.execute(stmt)
+        return result.scalar_one_or_none() is not None

src/infrastructure/database/unit_of_work.py

@@ -0,0 +1,105 @@
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker
+
+from src.application.abstractions import IUnitOfWork
+from src.application.abstractions.repositories import (
+    IAdminSessionRepository,
+    IAdminUserRepository,
+    ILegalEntityRepository,
+    IOrganizationDocumentRepository,
+    IOrganizationWalletRepository,
+    IPurchaseRequestRepository,
+    IUserRepository,
+)
+from src.application.contracts import ILogger
+from src.application.domain.exceptions import RefreshConcurrentException
+from src.infrastructure.database.repositories import (
+    AdminSessionRepository,
+    AdminUserRepository,
+    LegalEntityRepository,
+    OrganizationDocumentRepository,
+    OrganizationWalletRepository,
+    PurchaseRequestRepository,
+    UserRepository,
+)
+
+
+class UnitOfWork(IUnitOfWork):
+    def __init__(self, session_factory: async_sessionmaker[AsyncSession], logger: ILogger):
+        self.session_factory = session_factory
+        self._session: AsyncSession | None = None
+        self._user_repository: IUserRepository | None = None
+        self._admin_user_repository: IAdminUserRepository | None = None
+        self._admin_session_repository: IAdminSessionRepository | None = None
+        self._legal_entity_repository: ILegalEntityRepository | None = None
+        self._organization_wallet_repository: IOrganizationWalletRepository | None = None
+        self._organization_document_repository: IOrganizationDocumentRepository | None = None
+        self._purchase_request_repository: IPurchaseRequestRepository | None = None
+        self._logger: ILogger = logger
+
+    async def __aenter__(self):
+        self._session = self.session_factory()
+        return self
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        if exc_type:
+            if not isinstance(exc_val, RefreshConcurrentException):
+                self._logger.error(str(exc_val))
+            await self._session.rollback()
+        else:
+            await self._session.flush()
+            await self._session.commit()
+        await self._session.close()
+
+    async def commit(self) -> None:
+        await self._session.commit()
+
+    async def rollback(self) -> None:
+        await self._session.rollback()
+
+    @property
+    def user_repository(self) -> IUserRepository:
+        if self._user_repository is None:
+            self._user_repository = UserRepository(session=self._session, logger=self._logger)
+        return self._user_repository
+
+    @property
+    def admin_user_repository(self) -> IAdminUserRepository:
+        if self._admin_user_repository is None:
+            self._admin_user_repository = AdminUserRepository(session=self._session, logger=self._logger)
+        return self._admin_user_repository
+
+    @property
+    def admin_session_repository(self) -> IAdminSessionRepository:
+        if self._admin_session_repository is None:
+            self._admin_session_repository = AdminSessionRepository(session=self._session, logger=self._logger)
+        return self._admin_session_repository
+
+    @property
+    def legal_entity_repository(self) -> ILegalEntityRepository:
+        if self._legal_entity_repository is None:
+            self._legal_entity_repository = LegalEntityRepository(session=self._session, logger=self._logger)
+        return self._legal_entity_repository
+
+    @property
+    def organization_wallet_repository(self) -> IOrganizationWalletRepository:
+        if self._organization_wallet_repository is None:
+            self._organization_wallet_repository = OrganizationWalletRepository(
+                session=self._session, logger=self._logger
+            )
+        return self._organization_wallet_repository
+
+    @property
+    def organization_document_repository(self) -> IOrganizationDocumentRepository:
+        if self._organization_document_repository is None:
+            self._organization_document_repository = OrganizationDocumentRepository(
+                session=self._session, logger=self._logger
+            )
+        return self._organization_document_repository
+
+    @property
+    def purchase_request_repository(self) -> IPurchaseRequestRepository:
+        if self._purchase_request_repository is None:
+            self._purchase_request_repository = PurchaseRequestRepository(
+                session=self._session, logger=self._logger
+            )
+        return self._purchase_request_repository

src/infrastructure/logger/__init__.py

@@ -0,0 +1,28 @@
+from src.application.contracts import ILogger
+from src.application.domain.enums import LogFormat
+from src.application.domain.enums import LogLevel
+from src.infrastructure.config.settings import settings
+from src.infrastructure.logger.logger import Logger
+
+log_levels = {
+    'DEBUG': LogLevel.DEBUG,
+    'INFO': LogLevel.INFO,
+    'WARNING': LogLevel.WARNING,
+    'ERROR': LogLevel.ERROR,
+    'CRITICAL': LogLevel.CRITICAL,
+    'EXCEPTION': LogLevel.EXCEPTION,
+}
+
+log_formats = {
+    'JSON': LogFormat.JSON,
+    'TEXT': LogFormat.TEXT,
+}
+
+logger = Logger(
+    min_level=log_levels.get(settings.LOG_LEVEL, LogLevel.INFO),
+    log_format=log_formats.get(settings.LOG_FORMAT, LogFormat.JSON),
+)
+
+
+def get_logger() -> ILogger:
+    return logger

src/infrastructure/logger/logger.py

@@ -0,0 +1,129 @@
+import traceback
+import inspect
+import sys
+import json
+from datetime import datetime
+from typing import Callable, Optional, Any
+from ulid import ULID
+from src.application.contracts import ILogger
+from src.application.domain.enums import LogFormat, LogLevel
+from src.infrastructure.context_vars import trace_id_var
+
+
+class Logger(ILogger):
+    _instance = None
+    __default_format = LogFormat.JSON
+
+    def __new__(cls, *args: Any, **kwargs: Any) -> "Logger":
+        if cls._instance is None:
+            cls._instance = super(Logger, cls).__new__(cls)
+        return cls._instance
+
+    def __init__(
+        self,
+        log_format: LogFormat = __default_format,
+        min_level: LogLevel = LogLevel.INFO,
+        id_generator: Optional[Callable[[], str]] = lambda: str(ULID()),
+        instance_id: str = "N/A",
+    ):
+        self.log_format = log_format
+        self.min_level = min_level
+        self.id_generator = id_generator
+        self.instance_id = instance_id
+
+    def set_instance_id(self, instance_id: str) -> None:
+        self.instance_id = instance_id
+
+    def get_instance_id(self) -> str:
+        return self.instance_id
+
+    def set_format(self, log_format: LogFormat) -> None:
+        if not isinstance(log_format, LogFormat):
+            raise ValueError("Log format must be an instance of LogFormat enum")
+        self.log_format = log_format
+
+    def set_min_level(self, level: LogLevel) -> None:
+        self.min_level = level
+
+    def new_trace_id(self) -> str:
+        trace_id = str(ULID()) if self.id_generator is None else self.id_generator()
+        trace_id_var.set(trace_id)
+        return trace_id
+
+    def set_trace_id(self, trace_id: str) -> None:
+        trace_id_var.set(trace_id)
+
+    def get_trace_id(self) -> str:
+        return trace_id_var.get()
+
+    def clear_trace_id(self) -> None:
+        trace_id_var.set("N/A")
+
+    def _prepare_log_data(self, level: LogLevel, message: str) -> dict[str, Any]:
+        current_frame = inspect.currentframe()
+        if (
+            current_frame
+            and current_frame.f_back
+            and current_frame.f_back.f_back
+            and current_frame.f_back.f_back.f_back
+        ):
+            frame = current_frame.f_back.f_back.f_back
+            filename = frame.f_code.co_filename
+            line_number = frame.f_lineno
+        else:
+            filename = "unknown"
+            line_number = 0
+
+        log_data = {
+            "timestamp": datetime.now().isoformat(),
+            "level": level.name,
+            "instance_id": self.instance_id,
+            "file": filename,
+            "line": line_number,
+            "trace_id": trace_id_var.get(),
+            "message": message,
+        }
+
+        if level == LogLevel.EXCEPTION:
+            log_data["exception"] = traceback.format_exc()
+
+        return log_data
+
+    def _log(self, level: LogLevel, message: str) -> None:
+        if level >= self.min_level:
+            log_data = self._prepare_log_data(level, message)
+
+            if self.log_format == LogFormat.JSON:
+                log_message = json.dumps(log_data, ensure_ascii=False)
+            else:
+                log_message = (
+                    f"{log_data['timestamp']} - {log_data['level']} - "
+                    f"{log_data['instance_id']} - {log_data['trace_id']} - "
+                    f"{log_data['file']}:{log_data['line']} - "
+                    f"{log_data['message']}"
+                )
+                if "exception" in log_data:
+                    log_message += f"\nTraceback:\n{log_data['exception']}"
+
+            self._write(log_message)
+
+    def _write(self, message: str) -> None:
+        sys.stdout.write(message + "\n")
+
+    def debug(self, message: str) -> None:
+        self._log(LogLevel.DEBUG, message)
+
+    def info(self, message: str) -> None:
+        self._log(LogLevel.INFO, message)
+
+    def warning(self, message: str) -> None:
+        self._log(LogLevel.WARNING, message)
+
+    def error(self, message: str) -> None:
+        self._log(LogLevel.ERROR, message)
+
+    def critical(self, message: str) -> None:
+        self._log(LogLevel.CRITICAL, message)
+
+    def exception(self, message: str) -> None:
+        self._log(LogLevel.EXCEPTION, message)

src/infrastructure/messanger/__init__.py

@@ -0,0 +1 @@
+from src.infrastructure.messanger.rabbit_client import RabbitClient

src/infrastructure/messanger/rabbit_client.py

@@ -0,0 +1,72 @@
+from typing import Any, Mapping
+from faststream.rabbit import RabbitBroker
+from src.application.contracts import IQueueMessanger
+from src.infrastructure.config import settings
+
+
+class RabbitClient(IQueueMessanger):
+    def __init__(self) -> None:
+        self._broker = RabbitBroker(
+            settings.RABBIT_URL,
+        )
+        self._connected = False
+
+    async def connect(self) -> None:
+        if self._connected:
+            return
+        await self._broker.connect()
+        self._connected = True
+
+    async def close(self) -> None:
+        if not self._connected:
+            return
+        await self._broker.close()
+        self._connected = False
+
+    async def _ensure_connected(self) -> None:
+        if not self._connected:
+            await self.connect()
+
+    async def publish_to_queue(
+        self,
+        queue: str,
+        message: Any,
+        *,
+        persist: bool | None = None,
+        headers: Mapping[str, Any] | None = None,
+        correlation_id: str | None = None,
+        message_id: str | None = None,
+    ) -> None:
+        await self._ensure_connected()
+
+        await self._broker.publish(
+            message,
+            queue=queue,
+            persist=settings.RABBIT_PUBLISH_PERSIST if persist is None else persist,
+            headers=headers,
+            correlation_id=correlation_id,
+            message_id=message_id,
+        )
+
+    async def publish(
+        self,
+        message: Any,
+        *,
+        exchange: str,
+        routing_key: str,
+        persist: bool | None = None,
+        headers: Mapping[str, Any] | None = None,
+        correlation_id: str | None = None,
+        message_id: str | None = None,
+    ) -> None:
+        await self._ensure_connected()
+
+        await self._broker.publish(
+            message,
+            exchange=exchange,
+            routing_key=routing_key,
+            persist=settings.RABBIT_PUBLISH_PERSIST if persist is None else persist,
+            headers=headers,
+            correlation_id=correlation_id,
+            message_id=message_id,
+        )

src/infrastructure/security/__init__.py

@@ -0,0 +1,3 @@
+from src.infrastructure.security.jwt import JwtService
+from src.infrastructure.security.csrf import CsrfService
+from src.infrastructure.security.hash import HashService

src/infrastructure/security/csrf.py

@@ -0,0 +1,81 @@
+from __future__ import annotations
+import secrets
+from typing import Any, Optional, Mapping
+from itsdangerous import URLSafeTimedSerializer, SignatureExpired, BadSignature
+from src.application.contracts import ICsrfService
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.config.settings import settings
+
+
+class CsrfService(ICsrfService):
+    COOKIE_NAME = "csrf_token"
+    HEADER_NAME = "X-CSRF-Token"
+    SALT = "csrf"
+    TTL_SECONDS = 3600
+
+    def __init__(self) -> None:
+        self._serializer = URLSafeTimedSerializer(
+            secret_key=settings.CSRF_SECRET_KEY,
+            salt=self.SALT,
+        )
+
+    @property
+    def cookie_name(self) -> str:
+        return self.COOKIE_NAME
+
+    @property
+    def header_name(self) -> str:
+        return self.HEADER_NAME
+
+    @property
+    def ttl_seconds(self) -> int:
+        return self.TTL_SECONDS
+
+    def issue(self, subject: Optional[str] = None) -> str:
+        payload = {
+            "sub": subject,
+            "nonce": secrets.token_urlsafe(32),
+        }
+        return self._serializer.dumps(payload)
+
+    def verify(self, token: str, expected_subject: Optional[str] = None) -> dict[str, Any]:
+        try:
+            data = self._serializer.loads(token, max_age=self.TTL_SECONDS)
+        except SignatureExpired:
+            raise ApplicationException(
+                status_code=403,
+                message="CSRF token expired",
+            )
+        except BadSignature:
+            raise ApplicationException(
+                status_code=403,
+                message="CSRF token invalid",
+            )
+
+        if expected_subject is not None and data.get("sub") != expected_subject:
+            raise ApplicationException(
+                status_code=403,
+                message="CSRF token subject mismatch",
+            )
+
+        return data
+
+    def extract(self, cookies: Mapping[str, str], headers: Mapping[str, str]) -> tuple[Optional[str], Optional[str]]:
+        cookie_token = cookies.get(self.COOKIE_NAME)
+        header_token = headers.get(self.HEADER_NAME)
+        return cookie_token, header_token
+
+    def verify_pair(self, cookie_token: Optional[str], header_token: Optional[str], expected_subject: Optional[str] = None) -> None:
+        if not cookie_token or not header_token:
+            raise ApplicationException(
+                status_code=403,
+                message="CSRF token missing",
+            )
+
+        if not secrets.compare_digest(cookie_token, header_token):
+            raise ApplicationException(
+                status_code=403,
+                message="CSRF token mismatch",
+            )
+
+        self.verify(cookie_token, expected_subject=expected_subject)

src/infrastructure/security/hash.py

@@ -0,0 +1,17 @@
+import bcrypt
+from src.application.contracts import IHashService, ILogger
+
+
+class HashService(IHashService):
+
+    def __init__(self, logger: ILogger):
+        self._logger = logger
+
+    async def hash(self, value: str) -> str:
+        hashed_value = bcrypt.hashpw(value.encode(), bcrypt.gensalt())
+        self._logger.info(f'Hash value {hashed_value.decode()}')
+        return hashed_value.decode()
+
+    async def verify(self, hashed_value: str, plain_value: str) -> bool:
+        self._logger.info(f'Hash value {hashed_value[:10]}')
+        return bcrypt.checkpw(plain_value.encode(), hashed_value.encode())

src/infrastructure/security/jwt.py

@@ -0,0 +1,118 @@
+from __future__ import annotations
+
+from datetime import datetime, timezone, timedelta
+
+from jose import jwt, ExpiredSignatureError, JWTError
+
+from src.application.contracts import ILogger, IJwtService
+from src.application.domain.dto import AccessTokenPayload
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.config.settings import settings
+from src.infrastructure.vault import JwtKeyStore
+
+
+class JwtService(IJwtService):
+    def __init__(self, logger: ILogger, key_store: JwtKeyStore) -> None:
+        self._logger = logger
+        self._key_store = key_store
+
+    @property
+    def _issuer(self) -> str | None:
+        return settings.ADMIN_JWT_ISSUER
+
+    async def create_access_token(self, user_id: str, *, role: str) -> str:
+        now = datetime.now(timezone.utc)
+        exp = now + timedelta(seconds=int(settings.JWT_ACCESS_TTL_SECONDS))
+
+        payload: dict[str, object] = {
+            'sub': user_id,
+            'type': 'access',
+            'role': role,
+            'iat': int(now.timestamp()),
+            'nbf': int(now.timestamp()),
+            'exp': int(exp.timestamp()),
+        }
+        if self._issuer:
+            payload['iss'] = self._issuer
+        if settings.JWT_AUDIENCE:
+            payload['aud'] = settings.JWT_AUDIENCE
+
+        try:
+            kid, private_pem = await self._key_store.get_signing_key()
+            token = jwt.encode(payload, private_pem, algorithm=settings.JWT_ALGORITHM, headers={'kid': kid})
+            self._logger.info(f'Admin access token created admin_user_id={user_id} kid={kid}')
+            return token
+        except ApplicationException:
+            raise
+        except Exception as exception:
+            self._logger.error(f'JWT signing failed admin_user_id={user_id} error={exception}')
+            raise ApplicationException(status_code=500, message='JWT signing failed')
+
+    async def decode_access_token(self, token: str) -> AccessTokenPayload:
+        payload = await self._decode_and_verify(token)
+        if payload.get('type') != 'access':
+            raise ApplicationException(status_code=401, message='Invalid token type')
+        try:
+            return AccessTokenPayload(
+                sub=str(payload['sub']),
+                type='access',
+                role=str(payload['role']) if payload.get('role') else None,
+                iat=int(payload['iat']),
+                nbf=int(payload['nbf']),
+                exp=int(payload['exp']),
+                iss=payload.get('iss'),
+                aud=payload.get('aud'),
+            )
+        except KeyError as exception:
+            raise ApplicationException(status_code=401, message=f'Missing token claim: {exception}')
+
+    async def _decode_and_verify(self, token: str) -> dict:
+        kid: str | None = None
+        try:
+            header = jwt.get_unverified_header(token)
+            kid = header.get('kid')
+            if not kid:
+                raise ApplicationException(status_code=401, message='Missing token header: kid')
+            if header.get('alg') != settings.JWT_ALGORITHM:
+                raise ApplicationException(status_code=401, message='Invalid token algorithm')
+
+            public_pem = await self._key_store.get_public_key_for_kid(str(kid))
+            if not public_pem:
+                raise ApplicationException(status_code=401, message='Unknown token kid')
+
+            options = {
+                'verify_signature': True,
+                'verify_exp': True,
+                'verify_nbf': True,
+                'verify_iat': True,
+                'verify_aud': bool(settings.JWT_AUDIENCE),
+                'verify_iss': bool(self._issuer),
+                'require_exp': True,
+                'require_iat': True,
+                'require_nbf': True,
+                'require_sub': True,
+                'leeway': 10,
+            }
+
+            payload = jwt.decode(
+                token,
+                public_pem,
+                algorithms=[settings.JWT_ALGORITHM],
+                audience=settings.JWT_AUDIENCE or None,
+                issuer=self._issuer or None,
+                options=options,
+            )
+            if 'type' not in payload:
+                raise ApplicationException(status_code=401, message='Missing token claim: type')
+            if payload.get('type') == 'access' and 'role' not in payload:
+                raise ApplicationException(status_code=401, message='Missing token claim: role')
+            return payload
+        except ExpiredSignatureError:
+            raise ApplicationException(status_code=401, message='Token expired')
+        except ApplicationException:
+            raise
+        except JWTError:
+            raise ApplicationException(status_code=401, message='Invalid token')
+        except Exception as exception:
+            self._logger.error(f'Unexpected JWT decode error kid={kid} error={exception}')
+            raise ApplicationException(status_code=500, message='JWT decode failed')

src/infrastructure/storage/s3_documents_service.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+from aiobotocore.session import get_session
+
+
+class S3DocumentsService:
+    def __init__(
+        self,
+        *,
+        bucket: str,
+        region: str,
+        access_key_id: str | None,
+        secret_access_key: str | None,
+        endpoint_url: str | None,
+        key_prefix: str = 'legal-docs',
+        presigned_ttl_seconds: int = 3600,
+    ):
+        self._bucket = bucket
+        self._region = region or 'us-east-1'
+        self._access_key_id = access_key_id
+        self._secret_access_key = secret_access_key
+        self._endpoint_url = endpoint_url.strip().rstrip('/') if endpoint_url and endpoint_url.strip() else None
+        self._key_prefix = key_prefix.strip('/')
+        self._presigned_ttl_seconds = presigned_ttl_seconds
+
+    def build_object_key(self, organization_id: str, document_id: str, file_name: str) -> str:
+        safe_name = file_name.replace('/', '_').replace('\\', '_')
+        return f'{self._key_prefix}/{organization_id}/{document_id}/{safe_name}'
+
+    def _client_kwargs(self) -> dict[str, object]:
+        kw: dict[str, object] = {'region_name': self._region}
+        if self._access_key_id:
+            kw['aws_access_key_id'] = self._access_key_id
+        if self._secret_access_key:
+            kw['aws_secret_access_key'] = self._secret_access_key
+        if self._endpoint_url:
+            kw['endpoint_url'] = self._endpoint_url
+        return kw
+
+    async def upload_bytes(self, *, key: str, body: bytes, content_type: str) -> str:
+        session = get_session()
+        async with session.create_client('s3', **self._client_kwargs()) as client:
+            await client.put_object(
+                Bucket=self._bucket,
+                Key=key,
+                Body=body,
+                ContentType=content_type,
+            )
+        return key
+
+    async def generate_presigned_download_url(self, *, key: str, expires_in: int | None = None) -> str:
+        ttl = expires_in if expires_in is not None else self._presigned_ttl_seconds
+        session = get_session()
+        async with session.create_client('s3', **self._client_kwargs()) as client:
+            url = await client.generate_presigned_url(
+                ClientMethod='get_object',
+                Params={'Bucket': self._bucket, 'Key': key},
+                ExpiresIn=ttl,
+            )
+        return url
+
+    async def delete_object(self, *, key: str) -> None:
+        session = get_session()
+        async with session.create_client('s3', **self._client_kwargs()) as client:
+            await client.delete_object(Bucket=self._bucket, Key=key)

src/infrastructure/utils/__init__.py

@@ -0,0 +1 @@
+from src.infrastructure.utils.instance_id import generate_instance_id

src/infrastructure/utils/instance_id.py

@@ -0,0 +1,14 @@
+from ulid import ULID
+
+
+def generate_instance_id() -> str:
+    """
+    Generate a process-wide instance id in ULID format.
+
+    ULID is 26 chars (Crockford Base32) and lexicographically sortable by time.
+    """
+
+
+    return str(ULID())
+
+

src/infrastructure/vault/__init__.py

@@ -0,0 +1,3 @@
+from src.infrastructure.vault.utils import create_hvac_client_from_approle, read_kv2_secret
+from src.infrastructure.vault.keys import JwtKeyStore
+from src.infrastructure.vault.scheduler import start_jwt_keys_scheduler

src/infrastructure/vault/keys.py

@@ -0,0 +1,118 @@
+from __future__ import annotations
+import asyncio
+from datetime import datetime, timezone
+from src.application.domain.dto import JwtKeySet, JwtKeyPair
+from src.application.domain.exceptions import ApplicationException
+from src.infrastructure.vault.utils import create_hvac_client_from_approle, read_kv2_secret
+
+
+
+class JwtKeyStore:
+
+    _instance: "JwtKeyStore | None" = None
+
+    def __new__(cls, *args, **kwargs):
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+        return cls._instance
+
+    def __init__(
+        self,
+        *,
+        vault_addr: str,
+        vault_role_id: str,
+        vault_secret_id: str,
+        vault_namespace: str | None,
+        mount_point: str,
+        kid_path: str = 'jwt/kid',
+        kids_prefix: str = 'jwt/kids',
+        timeout_seconds: int = 5,
+    ):
+        if getattr(self, '_initialized', False):
+            return
+
+        self._vault_addr = vault_addr
+        self._vault_role_id = vault_role_id
+        self._vault_secret_id = vault_secret_id
+        self._vault_namespace = vault_namespace
+        self._timeout = timeout_seconds
+
+        self._mount = mount_point
+        self._kid_path = kid_path
+        self._kids_prefix = kids_prefix
+
+        self._lock = asyncio.Lock()
+        self._keyset: JwtKeySet | None = None
+        self._last_refresh_at: datetime | None = None
+
+        self._initialized = True
+
+
+    @classmethod
+    def get_instance(cls) -> 'JwtKeyStore':
+
+        if cls._instance is None:
+            raise ApplicationException(status_code=500, message='JwtKeyStore not initialized')
+
+        return cls._instance
+
+    def _read_keyset_sync(self) -> JwtKeySet:
+        client = create_hvac_client_from_approle(
+            url=self._vault_addr,
+            role_id=self._vault_role_id,
+            secret_id=self._vault_secret_id,
+            namespace=self._vault_namespace,
+            timeout=self._timeout,
+        )
+
+        kids = read_kv2_secret(client=client, mount_point=self._mount, path=self._kid_path)
+        active_kid = kids.get('active')
+        previous_kid = kids.get('previous')
+
+        if not active_kid:
+            raise RuntimeError('Vault jwt/kid secret missing active')
+
+        active_pair = self._read_keypair_sync(client, active_kid)
+
+        prev_pair = None
+        if previous_kid and previous_kid != active_kid:
+            prev_pair = self._read_keypair_sync(client, previous_kid)
+
+        return JwtKeySet(active=active_pair, previous=prev_pair)
+
+    def _read_keypair_sync(self, client, kid: str) -> JwtKeyPair:
+        data = read_kv2_secret(
+            client=client,
+            mount_point=self._mount,
+            path=f'{self._kids_prefix}/{kid}',
+        )
+        priv = data.get('private_key')
+        pub = data.get('public_key')
+        if not priv or not pub:
+            raise RuntimeError(f'Vault jwt/kids/{kid} missing private_key/public_key')
+        return JwtKeyPair(kid=kid, private_key_pem=priv, public_key_pem=pub)
+
+
+    async def refresh(self) -> JwtKeySet:
+        keyset = await asyncio.to_thread(self._read_keyset_sync)
+        async with self._lock:
+            self._keyset = keyset
+            self._last_refresh_at = datetime.now(timezone.utc)
+        return keyset
+
+    async def get_signing_key(self) -> tuple[str, str]:
+        ks = await self._get_or_refresh()
+        return ks.active.kid, ks.active.private_key_pem
+
+    async def get_public_key_for_kid(self, kid: str) -> str | None:
+        ks = await self._get_or_refresh()
+        return ks.public_keys_by_kid().get(kid)
+
+    async def last_refresh_at(self) -> datetime | None:
+        async with self._lock:
+            return self._last_refresh_at
+
+    async def _get_or_refresh(self) -> JwtKeySet:
+        async with self._lock:
+            ks = self._keyset
+        return ks if ks else await self.refresh()

src/infrastructure/vault/scheduler.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+import logging
+from apscheduler.schedulers.asyncio import AsyncIOScheduler
+from apscheduler.triggers.interval import IntervalTrigger
+from src.infrastructure.vault import JwtKeyStore
+
+
+logger = logging.getLogger(__name__)
+
+
+def start_jwt_keys_scheduler(store: JwtKeyStore, *, refresh_seconds: int = 3600) -> AsyncIOScheduler:
+    scheduler = AsyncIOScheduler()
+    scheduler.add_job(
+        store.refresh,
+        trigger=IntervalTrigger(seconds=refresh_seconds),
+        id="jwt_keys_refresh",
+        replace_existing=True,
+        max_instances=1,
+        coalesce=True,
+        misfire_grace_time=60,
+    )
+    scheduler.start()
+    logger.info("JWT keys scheduler started (interval=%s seconds)", refresh_seconds)
+    return scheduler

src/infrastructure/vault/utils.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+import hvac
+
+
+def create_hvac_client_from_approle(
+    *,
+    url: str,
+    role_id: str,
+    secret_id: str,
+    namespace: str | None = None,
+    timeout: int = 5,
+) -> hvac.Client:
+    kwargs: dict = {'url': url, 'timeout': timeout}
+    if namespace:
+        kwargs['namespace'] = namespace
+    client = hvac.Client(**kwargs)
+    client.auth.approle.login(role_id=role_id, secret_id=secret_id)
+    if not client.is_authenticated():
+        raise RuntimeError(
+            'Vault AppRole authentication failed. Check VAULT_ADDR, VAULT_ROLE_ID, VAULT_SECRET_ID'
+        )
+    return client
+
+
+def read_kv2_secret(*, client: hvac.Client, mount_point: str, path: str) -> dict:
+    secret = client.secrets.kv.v2.read_secret_version(
+        mount_point=mount_point,
+        path=path,
+    )
+    return secret["data"]["data"]