{"version":3,"file":"veil-service.mjs","names":[],"sources":["../../../src/services/veil-service.ts"],"sourcesContent":["/**\n * Veil.cash Service — privacy pool integration for private transfers on Base.\n *\n * Uses @veil-cash/sdk for ZK proof generation and relayer submission.\n * Supports ETH and USDC privacy pools.\n *\n * SDK provides:\n * - Keypair.fromSigner() — derive privacy keypair from Bankr sign API\n * - deposit() — deposit into privacy pool (public → private)\n * - withdraw() — withdraw from privacy pool (private → public)\n * - transfer() — private-to-private transfer\n * - balance() — check shielded balance\n *\n * Requires: @veil-cash/sdk npm package (optional dep, ~50KB).\n */\n\nimport { getWalletState, requireWalletClient } from './walletconnect-service.js';\n\n// ── Types ───────────────────────────────────────────────────────────────────\n\nexport interface VeilBalance {\n asset: string;\n shielded: string;\n pendingDeposits: string;\n pendingWithdrawals: string;\n}\n\nexport interface VeilTxResult {\n action: string;\n asset: string;\n amount: string;\n txHash: string | null;\n noteHash: string | null;\n status: string;\n}\n\nexport interface VeilDepositResult extends VeilTxResult {\n action: 'deposit';\n note: string; // encrypted note for withdrawal\n}\n\nexport interface VeilWithdrawResult extends VeilTxResult {\n action: 'withdraw';\n recipient: string;\n relayerFee: string | null;\n}\n\n// ── Supported Assets ────────────────────────────────────────────────────────\n\nconst SUPPORTED_ASSETS: Record = {\n ETH: {\n address: '0x0000000000000000000000000000000000000000',\n decimals: 18,\n poolSize: '0.1', // pool denomination in ETH\n },\n USDC: {\n address: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913',\n decimals: 6,\n poolSize: '100', // pool denomination in USDC\n },\n};\n\n// ── Service ─────────────────────────────────────────────────────────────────\n\nexport class VeilService {\n private sdk: any = null;\n private keypair: any = null;\n private keypairAddress: string | null = null; // Track which wallet derived the keypair\n\n /**\n * Check if the Veil SDK is installed.\n */\n async isAvailable(): Promise {\n try {\n // @ts-expect-error — optional dependency, not always installed\n await import('@veil-cash/sdk');\n return true;\n } catch {\n return false;\n }\n }\n\n /**\n * Get the SDK instance, lazily loaded.\n */\n private async getSdk(): Promise {\n if (this.sdk) return this.sdk;\n try {\n // @ts-expect-error — optional dependency, not always installed\n this.sdk = await import('@veil-cash/sdk');\n return this.sdk;\n } catch {\n throw new Error(\n '@veil-cash/sdk not installed. Install with: pnpm add @veil-cash/sdk\\n' +\n 'This package provides ZK proof generation for private transactions on Base.',\n );\n }\n }\n\n /**\n * Derive a privacy keypair from the connected wallet's signer.\n * Invalidates the cached keypair if the wallet address has changed.\n */\n private async getKeypair(): Promise {\n const state = getWalletState();\n const currentAddress = state.address ?? null;\n\n // Invalidate keypair if wallet changed\n if (this.keypair && this.keypairAddress !== currentAddress) {\n this.keypair = null;\n this.keypairAddress = null;\n }\n\n if (this.keypair) return this.keypair;\n\n const sdk = await this.getSdk();\n const walletClient = requireWalletClient();\n\n // Keypair.fromSigner works with any EIP-191 signer (including Bankr)\n this.keypair = await sdk.Keypair.fromSigner(walletClient);\n this.keypairAddress = currentAddress;\n return this.keypair;\n }\n\n getSupportedAssets() {\n return Object.entries(SUPPORTED_ASSETS).map(([symbol, info]) => ({\n symbol,\n address: info.address,\n poolDenomination: info.poolSize,\n }));\n }\n\n resolveAsset(input: string): { symbol: string; address: string; decimals: number; poolSize: string } | null {\n const upper = input.toUpperCase();\n const asset = SUPPORTED_ASSETS[upper];\n if (!asset) return null;\n return { symbol: upper, ...asset };\n }\n\n // ── Deposit (Public → Private) ─────────────────────────────────────\n\n async deposit(\n asset: string,\n amount: string,\n ): Promise {\n const sdk = await this.getSdk();\n const keypair = await this.getKeypair();\n const assetInfo = this.resolveAsset(asset);\n if (!assetInfo) throw new Error(`Unsupported asset: ${asset}. Supported: ETH, USDC`);\n\n const state = getWalletState();\n if (!state.connected || !state.address) {\n throw new Error('No wallet connected.');\n }\n\n const walletClient = requireWalletClient();\n\n const result = await sdk.deposit({\n keypair,\n asset: assetInfo.address,\n amount,\n signer: walletClient,\n chainId: 8453,\n });\n\n return {\n action: 'deposit',\n asset: assetInfo.symbol,\n amount,\n txHash: result.txHash ?? null,\n noteHash: result.noteHash ?? null,\n note: result.note ?? '',\n status: result.txHash ? 'confirmed' : 'pending',\n };\n }\n\n // ── Withdraw (Private → Public) ────────────────────────────────────\n\n async withdraw(\n asset: string,\n amount: string,\n recipient: string,\n ): Promise {\n const sdk = await this.getSdk();\n const keypair = await this.getKeypair();\n const assetInfo = this.resolveAsset(asset);\n if (!assetInfo) throw new Error(`Unsupported asset: ${asset}. Supported: ETH, USDC`);\n\n const result = await sdk.withdraw({\n keypair,\n asset: assetInfo.address,\n amount,\n recipient,\n chainId: 8453,\n useRelayer: true, // Use relayer for privacy (hides withdrawal address)\n });\n\n return {\n action: 'withdraw',\n asset: assetInfo.symbol,\n amount,\n recipient,\n txHash: result.txHash ?? null,\n noteHash: result.noteHash ?? null,\n relayerFee: result.relayerFee ?? null,\n status: result.txHash ? 'confirmed' : 'submitted_to_relayer',\n };\n }\n\n // ── Private Transfer ───────────────────────────────────────────────\n\n async transfer(\n asset: string,\n amount: string,\n recipientPublicKey: string,\n ): Promise {\n const sdk = await this.getSdk();\n const keypair = await this.getKeypair();\n const assetInfo = this.resolveAsset(asset);\n if (!assetInfo) throw new Error(`Unsupported asset: ${asset}. Supported: ETH, USDC`);\n\n const result = await sdk.transfer({\n keypair,\n asset: assetInfo.address,\n amount,\n recipientPublicKey,\n chainId: 8453,\n });\n\n return {\n action: 'transfer',\n asset: assetInfo.symbol,\n amount,\n txHash: result.txHash ?? null,\n noteHash: result.noteHash ?? null,\n status: result.txHash ? 'confirmed' : 'pending',\n };\n }\n\n // ── Balance ────────────────────────────────────────────────────────\n\n async getBalance(asset?: string): Promise {\n const sdk = await this.getSdk();\n const keypair = await this.getKeypair();\n\n const assets = asset\n ? [this.resolveAsset(asset)].filter(Boolean)\n : Object.keys(SUPPORTED_ASSETS).map(s => this.resolveAsset(s)).filter(Boolean);\n\n const balances: VeilBalance[] = [];\n for (const a of assets) {\n if (!a) continue;\n try {\n const bal = await sdk.getBalance({\n keypair,\n asset: a.address,\n chainId: 8453,\n });\n balances.push({\n asset: a.symbol,\n shielded: bal.shielded ?? '0',\n pendingDeposits: bal.pendingDeposits ?? '0',\n pendingWithdrawals: bal.pendingWithdrawals ?? '0',\n });\n } catch {\n balances.push({\n asset: a.symbol,\n shielded: '0',\n pendingDeposits: '0',\n pendingWithdrawals: '0',\n });\n }\n }\n\n return balances;\n }\n}\n\n// ── Singleton ───────────────────────────────────────────────────────────────\n\nlet _instance: VeilService | null = null;\n\nexport function getVeilService(): VeilService {\n if (!_instance) {\n _instance = new VeilService();\n }\n return _instance;\n}\n\nexport function resetVeilService(): void {\n _instance = null;\n}\n"],"mappings":";;;;;;;;;;;;;;;;;AAiDA,MAAM,mBAA4F;CAChG,KAAK;EACH,SAAS;EACT,UAAU;EACV,UAAU;EACX;CACD,MAAM;EACJ,SAAS;EACT,UAAU;EACV,UAAU;EACX;CACF;AAID,IAAa,cAAb,MAAyB;CACvB,MAAmB;CACnB,UAAuB;CACvB,iBAAwC;;;;CAKxC,MAAM,cAAgC;AACpC,MAAI;AAEF,SAAM,OAAO;AACb,UAAO;UACD;AACN,UAAO;;;;;;CAOX,MAAc,SAAuB;AACnC,MAAI,KAAK,IAAK,QAAO,KAAK;AAC1B,MAAI;AAEF,QAAK,MAAM,MAAM,OAAO;AACxB,UAAO,KAAK;UACN;AACN,SAAM,IAAI,MACR,mJAED;;;;;;;CAQL,MAAc,aAA2B;EAEvC,MAAM,iBADQ,gBAAgB,CACD,WAAW;AAGxC,MAAI,KAAK,WAAW,KAAK,mBAAmB,gBAAgB;AAC1D,QAAK,UAAU;AACf,QAAK,iBAAiB;;AAGxB,MAAI,KAAK,QAAS,QAAO,KAAK;EAE9B,MAAM,MAAM,MAAM,KAAK,QAAQ;EAC/B,MAAM,eAAe,qBAAqB;AAG1C,OAAK,UAAU,MAAM,IAAI,QAAQ,WAAW,aAAa;AACzD,OAAK,iBAAiB;AACtB,SAAO,KAAK;;CAGd,qBAAqB;AACnB,SAAO,OAAO,QAAQ,iBAAiB,CAAC,KAAK,CAAC,QAAQ,WAAW;GAC/D;GACA,SAAS,KAAK;GACd,kBAAkB,KAAK;GACxB,EAAE;;CAGL,aAAa,OAA+F;EAC1G,MAAM,QAAQ,MAAM,aAAa;EACjC,MAAM,QAAQ,iBAAiB;AAC/B,MAAI,CAAC,MAAO,QAAO;AACnB,SAAO;GAAE,QAAQ;GAAO,GAAG;GAAO;;CAKpC,MAAM,QACJ,OACA,QAC4B;EAC5B,MAAM,MAAM,MAAM,KAAK,QAAQ;EAC/B,MAAM,UAAU,MAAM,KAAK,YAAY;EACvC,MAAM,YAAY,KAAK,aAAa,MAAM;AAC1C,MAAI,CAAC,UAAW,OAAM,IAAI,MAAM,sBAAsB,MAAM,wBAAwB;EAEpF,MAAM,QAAQ,gBAAgB;AAC9B,MAAI,CAAC,MAAM,aAAa,CAAC,MAAM,QAC7B,OAAM,IAAI,MAAM,uBAAuB;EAGzC,MAAM,eAAe,qBAAqB;EAE1C,MAAM,SAAS,MAAM,IAAI,QAAQ;GAC/B;GACA,OAAO,UAAU;GACjB;GACA,QAAQ;GACR,SAAS;GACV,CAAC;AAEF,SAAO;GACL,QAAQ;GACR,OAAO,UAAU;GACjB;GACA,QAAQ,OAAO,UAAU;GACzB,UAAU,OAAO,YAAY;GAC7B,MAAM,OAAO,QAAQ;GACrB,QAAQ,OAAO,SAAS,cAAc;GACvC;;CAKH,MAAM,SACJ,OACA,QACA,WAC6B;EAC7B,MAAM,MAAM,MAAM,KAAK,QAAQ;EAC/B,MAAM,UAAU,MAAM,KAAK,YAAY;EACvC,MAAM,YAAY,KAAK,aAAa,MAAM;AAC1C,MAAI,CAAC,UAAW,OAAM,IAAI,MAAM,sBAAsB,MAAM,wBAAwB;EAEpF,MAAM,SAAS,MAAM,IAAI,SAAS;GAChC;GACA,OAAO,UAAU;GACjB;GACA;GACA,SAAS;GACT,YAAY;GACb,CAAC;AAEF,SAAO;GACL,QAAQ;GACR,OAAO,UAAU;GACjB;GACA;GACA,QAAQ,OAAO,UAAU;GACzB,UAAU,OAAO,YAAY;GAC7B,YAAY,OAAO,cAAc;GACjC,QAAQ,OAAO,SAAS,cAAc;GACvC;;CAKH,MAAM,SACJ,OACA,QACA,oBACuB;EACvB,MAAM,MAAM,MAAM,KAAK,QAAQ;EAC/B,MAAM,UAAU,MAAM,KAAK,YAAY;EACvC,MAAM,YAAY,KAAK,aAAa,MAAM;AAC1C,MAAI,CAAC,UAAW,OAAM,IAAI,MAAM,sBAAsB,MAAM,wBAAwB;EAEpF,MAAM,SAAS,MAAM,IAAI,SAAS;GAChC;GACA,OAAO,UAAU;GACjB;GACA;GACA,SAAS;GACV,CAAC;AAEF,SAAO;GACL,QAAQ;GACR,OAAO,UAAU;GACjB;GACA,QAAQ,OAAO,UAAU;GACzB,UAAU,OAAO,YAAY;GAC7B,QAAQ,OAAO,SAAS,cAAc;GACvC;;CAKH,MAAM,WAAW,OAAwC;EACvD,MAAM,MAAM,MAAM,KAAK,QAAQ;EAC/B,MAAM,UAAU,MAAM,KAAK,YAAY;EAEvC,MAAM,SAAS,QACX,CAAC,KAAK,aAAa,MAAM,CAAC,CAAC,OAAO,QAAQ,GAC1C,OAAO,KAAK,iBAAiB,CAAC,KAAI,MAAK,KAAK,aAAa,EAAE,CAAC,CAAC,OAAO,QAAQ;EAEhF,MAAM,WAA0B,EAAE;AAClC,OAAK,MAAM,KAAK,QAAQ;AACtB,OAAI,CAAC,EAAG;AACR,OAAI;IACF,MAAM,MAAM,MAAM,IAAI,WAAW;KAC/B;KACA,OAAO,EAAE;KACT,SAAS;KACV,CAAC;AACF,aAAS,KAAK;KACZ,OAAO,EAAE;KACT,UAAU,IAAI,YAAY;KAC1B,iBAAiB,IAAI,mBAAmB;KACxC,oBAAoB,IAAI,sBAAsB;KAC/C,CAAC;WACI;AACN,aAAS,KAAK;KACZ,OAAO,EAAE;KACT,UAAU;KACV,iBAAiB;KACjB,oBAAoB;KACrB,CAAC;;;AAIN,SAAO;;;AAMX,IAAI,YAAgC;AAEpC,SAAgB,iBAA8B;AAC5C,KAAI,CAAC,UACH,aAAY,IAAI,aAAa;AAE/B,QAAO;;AAGT,SAAgB,mBAAyB;AACvC,aAAY"}