{"version":3,"file":"bitcoin.mjs","sources":["../../src/signers/http.ts","../../src/signers/bitcoin.ts"],"sourcesContent":["import type { SignerConfig } from '../types/signers';\n\nfunction sanitizeErrorMessage(status: number, text: string): string {\n // Sanitize error messages to avoid leaking sensitive server information\n let errorMessage = `Emblem signer error ${status}`;\n\n if (status >= 500) {\n errorMessage += ': Internal server error';\n } else if (status === 401 || status === 403) {\n errorMessage += ': Authentication failed';\n } else if (status === 404) {\n errorMessage += ': Resource not found';\n } else if (status === 405) {\n errorMessage += ': Method not allowed';\n } else if (text) {\n // For 4xx client errors, include limited error details\n errorMessage += `: ${text.substring(0, 200)}`; // Limit to 200 chars\n }\n\n return errorMessage;\n}\n\nasync function resolveAuthHeaders(config: SignerConfig): Promise> {\n // Priority: custom headers -> jwt/getJwt/sdk -> apiKey (deprecated)\n if (typeof config.getAuthHeaders === 'function') {\n const h = await config.getAuthHeaders();\n if (h && typeof h === 'object') return h;\n }\n\n const tok =\n config.jwt ??\n (typeof config.getJwt === 'function' ? await config.getJwt() : undefined) ??\n config.sdk?.getSession()?.authToken ??\n undefined;\n\n if (tok) {\n return { Authorization: `Bearer ${tok}` };\n }\n\n // apiKey is deprecated but still supported as fallback\n if (config.apiKey) {\n return { 'x-api-key': config.apiKey };\n }\n\n throw new Error(\n 'No authentication available: provide jwt, getJwt(), getAuthHeaders(), sdk, or apiKey'\n );\n}\n\nexport async function emblemPost(\n path: string,\n body: unknown,\n config: SignerConfig\n): Promise {\n const baseUrl = config.baseUrl ?? 'https://api.emblemvault.ai';\n const authHeaders = await resolveAuthHeaders(config);\n const res = await fetch(`${baseUrl}${path}`, {\n method: 'POST',\n headers: {\n 'content-type': 'application/json',\n ...authHeaders,\n },\n body: JSON.stringify(body, (_key: string, value: unknown) =>\n typeof value === 'bigint' ? value.toString() : value\n ),\n });\n\n if (!res.ok) {\n const text = await res.text().catch(() => '');\n throw new Error(sanitizeErrorMessage(res.status, text));\n }\n\n return res.json() as Promise;\n}\n\nexport async function emblemGet(path: string, config: SignerConfig): Promise {\n const baseUrl = config.baseUrl ?? 'https://api.emblemvault.ai';\n const authHeaders = await resolveAuthHeaders(config);\n const res = await fetch(`${baseUrl}${path}`, {\n method: 'GET',\n headers: authHeaders,\n });\n\n if (!res.ok) {\n const text = await res.text().catch(() => '');\n throw new Error(sanitizeErrorMessage(res.status, text));\n }\n\n return res.json() as Promise;\n}\n","import type { SignerConfig, SignerVaultInfo } from '../types/signers';\nimport { emblemPost } from './http';\nimport { fetchVaultInfo } from './vault';\n\n/**\n * Bitcoin address types\n */\nexport type BitcoinAddressType = 'p2pkh' | 'p2wpkh' | 'p2tr' | 'p2sh';\n\n/**\n * Bitcoin network type\n */\nexport type BitcoinNetwork = 'mainnet' | 'testnet';\n\n/**\n * Input signing instruction for PSBTs\n * Compatible with UniSat wallet-api's UserToSignInput format\n */\nexport interface BitcoinToSignInput {\n /** Input index in the PSBT */\n index: number;\n /** Bitcoin address associated with this input */\n address?: string;\n /** Public key (hex) for this input */\n publicKey?: string;\n /** Sighash types for signing */\n sighashTypes?: number[];\n /** Tap leaf hash to sign (hex) for Taproot script path spending */\n tapLeafHashToSign?: string;\n /** Use tweaked signer for Taproot */\n useTweakedSigner?: boolean;\n /** Disable tweak signer for Taproot */\n disableTweakSigner?: boolean;\n}\n\n/**\n * Bitcoin sign transaction options\n */\nexport interface BitcoinSignOptions {\n /** Transaction type determines signing algorithm (ECDSA for p2pkh/p2wpkh, Schnorr for p2tr) */\n transactionType: 'p2pkh' | 'p2wpkh' | 'p2tr';\n /** Per-input signing instructions for complex PSBTs */\n toSignInputs?: BitcoinToSignInput[];\n}\n\n/**\n * Response from signing a Bitcoin PSBT\n */\nexport interface BitcoinSignResult {\n success: boolean;\n /** Signed PSBT in base64 format */\n signedPsbt: string;\n /** Final transaction hex (ready for broadcast) */\n signedTxHex: string;\n /** Raw signature */\n signature: string;\n}\n\n/**\n * Extended vault info including Bitcoin public key and derived addresses\n */\nexport interface BitcoinVaultInfo extends SignerVaultInfo {\n /** Bitcoin public key (compressed, hex) */\n btcPubkey: string;\n /** Derived Bitcoin addresses */\n btcAddresses?: {\n /** Legacy (1...) */\n p2pkh: string;\n /** Native SegWit (bc1q...) */\n p2wpkh: string;\n /** Taproot (bc1p...) */\n p2tr: string;\n };\n}\n\n/**\n * Bitcoin signer interface compatible with common Bitcoin libraries\n */\nexport interface BitcoinSignerInterface {\n /** Bitcoin public key (compressed, hex) */\n publicKey: string;\n /** Derived Bitcoin addresses */\n addresses: {\n p2pkh: string;\n p2wpkh: string;\n p2tr: string;\n };\n /** Sign a PSBT */\n signPsbt(psbtBase64: string, options: BitcoinSignOptions): Promise;\n /** Sign multiple PSBTs */\n signAllPsbts(\n psbts: Array<{ psbt: string; options: BitcoinSignOptions }>\n ): Promise;\n /** Get the vault ID */\n getVaultId(): string;\n /** Get public key as hex */\n getPublicKey(): string;\n}\n\n/**\n * Constants for Bitcoin calculations\n */\nexport const SATS_PER_BTC = 100_000_000;\n\n/**\n * Emblem Bitcoin Signer implementation\n */\nexport class EmblemBitcoinSigner implements BitcoinSignerInterface {\n readonly publicKey: string; // Compressed public key (hex)\n readonly addresses: {\n p2pkh: string;\n p2wpkh: string;\n p2tr: string;\n };\n private readonly config: SignerConfig;\n private readonly vaultId: string;\n\n constructor(config: SignerConfig, vaultInfo: BitcoinVaultInfo) {\n if (!vaultInfo.btcPubkey) {\n throw new Error('Bitcoin public key is required in vault info');\n }\n this.publicKey = vaultInfo.btcPubkey;\n this.addresses = vaultInfo.btcAddresses ?? {\n p2pkh: '',\n p2wpkh: '',\n p2tr: '',\n };\n this.config = config;\n this.vaultId = vaultInfo.vaultId;\n }\n\n /**\n * Sign a Bitcoin PSBT\n * @param psbtBase64 - PSBT in base64 format\n * @param options - Signing options including transaction type and per-input instructions\n */\n async signPsbt(psbtBase64: string, options: BitcoinSignOptions): Promise {\n const { transactionType, toSignInputs } = options;\n\n // Normalize toSignInputs for JSON transmission\n const normalizedInputs = toSignInputs?.map(input => ({\n ...input,\n // Ensure tapLeafHashToSign is a string (some libs pass Buffer/Uint8Array)\n tapLeafHashToSign: this.normalizeToHex(input.tapLeafHashToSign),\n }));\n\n const response = await emblemPost(\n '/sign-btc-transaction',\n {\n vaultId: this.vaultId,\n psbt: psbtBase64,\n transactionType,\n toSignInputs: normalizedInputs,\n },\n this.config\n );\n\n return response;\n }\n\n /**\n * Sign multiple PSBTs\n * @param psbts - Array of PSBTs with their signing options\n */\n async signAllPsbts(\n psbts: Array<{ psbt: string; options: BitcoinSignOptions }>\n ): Promise {\n const results: BitcoinSignResult[] = [];\n for (const { psbt, options } of psbts) {\n results.push(await this.signPsbt(psbt, options));\n }\n return results;\n }\n\n /**\n * Get the vault ID\n */\n getVaultId(): string {\n return this.vaultId;\n }\n\n /**\n * Get public key as hex\n */\n getPublicKey(): string {\n return this.publicKey;\n }\n\n /**\n * Check if a given address belongs to this signer\n */\n ownsAddress(address: string): boolean {\n return (\n address === this.addresses.p2pkh ||\n address === this.addresses.p2wpkh ||\n address === this.addresses.p2tr\n );\n }\n\n /**\n * Get the appropriate address for a given type\n */\n getAddress(type: BitcoinAddressType = 'p2wpkh'): string {\n switch (type) {\n case 'p2pkh':\n return this.addresses.p2pkh;\n case 'p2wpkh':\n return this.addresses.p2wpkh;\n case 'p2tr':\n return this.addresses.p2tr;\n case 'p2sh':\n // P2SH is typically wrapped SegWit, return p2wpkh as fallback\n return this.addresses.p2wpkh;\n default:\n return this.addresses.p2wpkh;\n }\n }\n\n /**\n * Normalize a value to hex string (handles string, Buffer, Uint8Array)\n */\n private normalizeToHex(value: string | ArrayLike | undefined): string | undefined {\n if (value === undefined || value === null) return undefined;\n if (typeof value === 'string') return value;\n // Handle Buffer/Uint8Array\n const bytes = value as ArrayLike;\n let hex = '';\n for (let i = 0; i < bytes.length; i++) {\n hex += (bytes[i] as number).toString(16).padStart(2, '0');\n }\n return hex;\n }\n}\n\n/**\n * Create an Emblem Bitcoin signer from config\n * @param config - Signer configuration with authentication\n * @param infoOverride - Optional vault info to skip API call\n */\nexport async function toBitcoinSigner(\n config: SignerConfig,\n infoOverride?: BitcoinVaultInfo\n): Promise {\n const info = infoOverride ?? 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