/**
 * Реестр известных токенов per-chain. Используется в getBalance для
 * параллельного запроса баланса всех токенов адреса.
 *
 * Адреса контрактов / mint'ы — из публичных on-chain данных и используются
 * также в swap-proxy роутах (BSC TOKEN_MAP, SOL ALLOWED_MINTS).
 */

import type { ChainCode } from './address-validators';

export interface EvmToken {
  symbol: string;
  contractAddress: string;
  decimals: number;
  coingeckoId?: string;
}

export interface TrxToken {
  symbol: string;
  contractAddress: string;       // T...base58
  decimals: number;
  coingeckoId?: string;
}

export interface SolToken {
  symbol: string;
  mint: string;                  // SPL mint pubkey (base58)
  decimals: number;
  coingeckoId?: string;
}

/**
 * CoinGecko coin IDs для native монет каждой chain.
 * Используется в `price-oracle.service.ts` для USD-цен в `/balance`.
 */
export const NATIVE_COINGECKO_IDS: Record<ChainCode, string> = {
  BTC: 'bitcoin',
  ETH: 'ethereum',
  BSC: 'binancecoin',
  TRX: 'tron',
  SOL: 'solana',
};

export const ETH_TOKENS: EvmToken[] = [
  { symbol: 'USDT', contractAddress: '0xdAC17F958D2ee523a2206206994597C13D831ec7', decimals: 6,  coingeckoId: 'tether' },
  { symbol: 'USDC', contractAddress: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', decimals: 6,  coingeckoId: 'usd-coin' },
  { symbol: 'DAI',  contractAddress: '0x6B175474E89094C44Da98b954EedeAC495271d0F', decimals: 18, coingeckoId: 'dai' },
  { symbol: 'WBTC', contractAddress: '0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599', decimals: 8,  coingeckoId: 'wrapped-bitcoin' },
  { symbol: 'LINK', contractAddress: '0x514910771AF9Ca656af840dff83E8264EcF986CA', decimals: 18, coingeckoId: 'chainlink' },
  { symbol: 'UNI',  contractAddress: '0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984', decimals: 18, coingeckoId: 'uniswap' },
];

export const BSC_TOKENS: EvmToken[] = [
  { symbol: 'USDT', contractAddress: '0x55d398326f99059fF775485246999027B3197955', decimals: 18, coingeckoId: 'tether' },
  { symbol: 'USDC', contractAddress: '0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d', decimals: 18, coingeckoId: 'usd-coin' },
  { symbol: 'DOGE', contractAddress: '0xbA2aE424d960c26247Dd6c32edC70B295c744C43', decimals: 8,  coingeckoId: 'dogecoin' },
  { symbol: 'WBNB', contractAddress: '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c', decimals: 18, coingeckoId: 'wbnb' },
  { symbol: 'BUSD', contractAddress: '0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56', decimals: 18, coingeckoId: 'binance-usd' },
];

export const TRX_TOKENS: TrxToken[] = [
  { symbol: 'USDT', contractAddress: 'TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t',  decimals: 6, coingeckoId: 'tether' },
  { symbol: 'USDC', contractAddress: 'TEkxiTehnzSmSe2XqrBj4w32RUN966rdz8', decimals: 6, coingeckoId: 'usd-coin' },
];

export const SOL_TOKENS: SolToken[] = [
  { symbol: 'USDT',   mint: 'Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB', decimals: 6, coingeckoId: 'tether' },
  { symbol: 'USDC',   mint: 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v', decimals: 6, coingeckoId: 'usd-coin' },
  { symbol: 'PUMP',   mint: 'pumpCmXqMfrsAkQ5r49WcJnRayYRqmXz6ae8H7H9Dfn',  decimals: 6, coingeckoId: 'pump-fun' },
  { symbol: 'JUP',    mint: 'JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN',  decimals: 6, coingeckoId: 'jupiter-exchange-solana' },
  { symbol: 'WIF',    mint: 'EKpQGSJtjMFqKZ9KQanSqYXRcF8fBopzLHYxdM65zcjm', decimals: 6, coingeckoId: 'dogwifcoin' },
  { symbol: 'POPCAT', mint: '7GCihgDB8fe6KNjn2MYtkzZcRjQy3t9GHdC8uHYmW2hr', decimals: 9, coingeckoId: 'popcat' },
  { symbol: 'TRUMP',  mint: '6p6xgHyF7AeE6TZkSmFsko444wqoP15icUSqi2jfGiPN', decimals: 6, coingeckoId: 'official-trump' },
  { symbol: 'PYTH',   mint: 'HZ1JovNiVvGrGNiiYvEozEVgZ58xaU3RKwX8eACQBCt3', decimals: 6, coingeckoId: 'pyth-network' },
  { symbol: 'JTO',    mint: 'jtojtomepa8beP8AuQc6eXt5FriJwfFMwQx2v2f9mCL',  decimals: 9, coingeckoId: 'jito-governance-token' },
  { symbol: 'W',      mint: '85VBFQZC9TZkfaptBWjvUw7YbZjy52A6mjtPGjstQAmQ', decimals: 6, coingeckoId: 'wormhole' },
  { symbol: 'BONK',   mint: 'DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263', decimals: 5, coingeckoId: 'bonk' },
  { symbol: 'ORCA',   mint: 'orcaEKTdK7LKz57vaAYr9QeNsVEPfiu6QeMU1kektZE',  decimals: 6, coingeckoId: 'orca' },
  { symbol: 'PENGU',  mint: '2zMMhcVQEXDtdE6vsFS7S7D5oUodfJHE8vd1gnBouauv', decimals: 6, coingeckoId: 'pudgy-penguins' },
  { symbol: 'RAY',    mint: '4k3Dyjzvzp8eMZWUXbBCjEvwSkkk59S5iCNLY3QrkX6R', decimals: 6, coingeckoId: 'raydium' },
];

export function getEvmTokens(chain: ChainCode): EvmToken[] {
  if (chain === 'ETH') return ETH_TOKENS;
  if (chain === 'BSC') return BSC_TOKENS;
  return [];
}

export function getTrxTokens(): TrxToken[] {
  return TRX_TOKENS;
}

export function getSolTokens(): SolToken[] {
  return SOL_TOKENS;
}

/**
 * Universal lookup для send flow. Returns address+decimals или null если token не в registry.
 * Symbol comparison case-insensitive.
 *
 * Usage:
 *   const info = getTokenInfo('BSC', 'USDC');
 *   // → { address: '0x8AC76a51...', decimals: 18 }
 *
 *   const info = getTokenInfo('SOL', 'USDT');
 *   // → { address: 'Es9vMFrza...', decimals: 6 }  (mint address)
 */
export function getTokenInfo(chain: ChainCode, symbol: string): { address: string; decimals: number } | null {
  const upper = String(symbol).toUpperCase();
  if (chain === 'ETH' || chain === 'BSC') {
    const t = getEvmTokens(chain).find((x) => x.symbol.toUpperCase() === upper);
    return t ? { address: t.contractAddress, decimals: t.decimals } : null;
  }
  if (chain === 'TRX') {
    const t = TRX_TOKENS.find((x) => x.symbol.toUpperCase() === upper);
    return t ? { address: t.contractAddress, decimals: t.decimals } : null;
  }
  if (chain === 'SOL') {
    const t = SOL_TOKENS.find((x) => x.symbol.toUpperCase() === upper);
    return t ? { address: t.mint, decimals: t.decimals } : null;
  }
  return null;
}

/**
 * Resolves the CoinGecko coin id for a given (chain, symbol) pair.
 *
 * Если `symbol` совпадает с самим именем chain (BTC/ETH/BSC/TRX/SOL) — возвращает
 * native id (`NATIVE_COINGECKO_IDS[chain]`).
 * В остальных случаях ищет токен в реестре сети и возвращает его `coingeckoId`.
 *
 * Возвращает `null` если:
 *   - chain неизвестен;
 *   - symbol не найден в реестре сети;
 *   - токен найден, но `coingeckoId` для него не задан.
 *
 * Используется исключительно как whitelist для price oracle (см. S1 в плане):
 * никакой свободный user-input не попадает в CoinGecko URL.
 */
export function getCoingeckoId(chain: ChainCode, symbol: string): string | null {
  if (!chain) return null;
  const upper = String(symbol || '').toUpperCase();
  if (!upper) return null;

  // Native — symbol === chain code (BTC, ETH, ...).
  if (upper === chain) return NATIVE_COINGECKO_IDS[chain] ?? null;

  if (chain === 'ETH' || chain === 'BSC') {
    const t = getEvmTokens(chain).find((x) => x.symbol.toUpperCase() === upper);
    return t?.coingeckoId ?? null;
  }
  if (chain === 'TRX') {
    const t = TRX_TOKENS.find((x) => x.symbol.toUpperCase() === upper);
    return t?.coingeckoId ?? null;
  }
  if (chain === 'SOL') {
    const t = SOL_TOKENS.find((x) => x.symbol.toUpperCase() === upper);
    return t?.coingeckoId ?? null;
  }
  return null;
}