{"version":3,"file":"dexscreener-service.mjs","names":[],"sources":["../../../src/services/dexscreener-service.ts"],"sourcesContent":["/**\n * DexScreener Service — shared API client for token data.\n *\n * Centralizes all DexScreener calls. Previously duplicated across\n * defi-price.ts, defi-balance.ts, and market-intel.ts.\n */\n\nimport { guardedFetch } from './endpoint-allowlist.js';\nimport { getMarketCache, type CacheCategory } from './market-cache.js';\n\nconst BASE_URL = 'https://api.dexscreener.com';\n\nconst CHAIN_ALIASES: Record = {\n base: 'base',\n ethereum: 'ethereum',\n eth: 'ethereum',\n arbitrum: 'arbitrum',\n arb: 'arbitrum',\n optimism: 'optimism',\n op: 'optimism',\n polygon: 'polygon',\n matic: 'polygon',\n};\n\nexport function resolveChain(input: string): string {\n return CHAIN_ALIASES[input.toLowerCase()] || input;\n}\n\n/**\n * Infer the cache category from the DexScreener API path.\n */\nfunction inferCacheCategory(path: string): CacheCategory {\n if (path.includes('/token-boosts/') || path.includes('/trending')) return 'trending';\n if (path.includes('/latest/dex/pairs/')) return 'new_pairs';\n if (path.includes('/tokens/') || path.includes('/simple/price')) return 'token_price';\n if (path.includes('/search')) return 'token_search';\n if (path.includes('/profiles')) return 'token_profile';\n return 'token_price'; // default\n}\n\nexport async function fetchDexScreener(path: string): Promise {\n const cache = getMarketCache();\n const category = inferCacheCategory(path);\n\n return cache.getOrFetch(category, `dexscreener:${path}`, async () => {\n // H10: Add request timeout to prevent hanging\n const response = await guardedFetch(`${BASE_URL}${path}`, {\n headers: { Accept: 'application/json' },\n signal: AbortSignal.timeout(15_000),\n });\n if (!response.ok) {\n throw new Error(`DexScreener API error: ${response.status} ${response.statusText}`);\n }\n return response.json();\n });\n}\n\n// ─── Common Queries ──────────────────────────────────────────────────────\n\nexport interface DexPairData {\n pairAddress?: string;\n chainId?: string;\n dexId?: string;\n url?: string;\n baseToken?: { address?: string; symbol?: string; name?: string };\n quoteToken?: { symbol?: string };\n priceUsd?: string;\n priceNative?: string;\n priceChange?: { m5?: number; h1?: number; h6?: number; h24?: number };\n volume?: { h1?: number; h6?: number; h24?: number };\n txns?: { h1?: any; h6?: any; h24?: any };\n liquidity?: { usd?: number };\n marketCap?: number;\n fdv?: number;\n pairCreatedAt?: number;\n}\n\n/**\n * Search for a token by symbol, name, or address.\n * Returns pairs sorted by liquidity (highest first).\n */\nexport async function searchToken(\n query: string,\n chain?: string,\n): Promise {\n let data: any;\n\n if (query.startsWith('0x') && query.length === 42 && chain) {\n data = await fetchDexScreener(`/tokens/v1/${resolveChain(chain)}/${query}`);\n } else {\n data = await fetchDexScreener(`/latest/dex/search?q=${encodeURIComponent(query)}`);\n }\n\n const pairs: DexPairData[] = data?.pairs ?? (Array.isArray(data) ? data : []);\n\n return pairs\n .filter((p) => !chain || p.chainId === resolveChain(chain))\n .sort((a, b) => (b.liquidity?.usd ?? 0) - (a.liquidity?.usd ?? 0));\n}\n\n/**\n * Get the USD price for a token. Returns 0 if not found.\n */\nexport async function getTokenPriceUsd(\n query: string,\n chain = 'base',\n): Promise<{ priceUsd: number; pair: DexPairData | null }> {\n try {\n const pairs = await searchToken(query, chain);\n const top = pairs[0];\n if (!top) return { priceUsd: 0, pair: null };\n return { priceUsd: parseFloat(top.priceUsd ?? '0'), pair: top };\n } catch {\n return { priceUsd: 0, pair: null };\n }\n}\n\n/**\n * Get ETH price in USD (via WETH/USDC pair on Base).\n */\nexport async function getEthPriceUsd(): Promise {\n try {\n const data = await fetchDexScreener('/latest/dex/search?q=WETH%20USDC');\n const basePair = data.pairs?.find(\n (p: any) => p.chainId === 'base' && p.baseToken?.symbol === 'WETH',\n );\n return basePair ? parseFloat(basePair.priceUsd ?? '0') : 0;\n } catch {\n return 0;\n }\n}\n\n/**\n * Get top boosted (trending) tokens.\n */\nexport async function getTrending(chain?: string, limit = 20): Promise {\n const data = await fetchDexScreener('/token-boosts/top/v1');\n return (data ?? 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