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* Data models for LangVoice SDK\r\n */\r\n\r\n// ============================================\r\n// Type Definitions\r\n// ============================================\r\n\r\nexport interface VoiceData {\r\n id: string;\r\n name: string;\r\n gender?: string;\r\n language?: string;\r\n description?: string;\r\n}\r\n\r\nexport interface LanguageData {\r\n id: string;\r\n name: string;\r\n voices?: string[];\r\n}\r\n\r\nexport interface GenerateRequestData {\r\n text: string;\r\n voice: string;\r\n language: string;\r\n speed: number;\r\n}\r\n\r\nexport interface MultiVoiceRequestData {\r\n text: string;\r\n language: string;\r\n speed: number;\r\n}\r\n\r\nexport interface GenerateResponseData {\r\n audioData: Buffer | ArrayBuffer;\r\n duration?: number;\r\n generationTime?: number;\r\n charactersProcessed?: number;\r\n}\r\n\r\n// ============================================\r\n// Classes\r\n// ============================================\r\n\r\n/**\r\n * Voice model\r\n */\r\nexport class Voice implements VoiceData {\r\n public readonly id: string;\r\n public readonly name: string;\r\n public readonly gender?: string;\r\n public readonly language?: string;\r\n public readonly description?: string;\r\n\r\n constructor(data: VoiceData) {\r\n this.id = data.id;\r\n this.name = data.name;\r\n this.gender = data.gender;\r\n this.language = data.language;\r\n this.description = data.description;\r\n }\r\n\r\n toJSON(): VoiceData {\r\n return {\r\n id: this.id,\r\n name: this.name,\r\n gender: this.gender,\r\n language: this.language,\r\n description: this.description,\r\n };\r\n }\r\n}\r\n\r\n/**\r\n * Language model\r\n */\r\nexport class Language implements LanguageData {\r\n public readonly id: string;\r\n public readonly name: string;\r\n public readonly voices?: string[];\r\n\r\n constructor(data: LanguageData) {\r\n this.id = data.id;\r\n this.name = data.name;\r\n this.voices = data.voices;\r\n }\r\n\r\n toJSON(): LanguageData {\r\n return {\r\n id: this.id,\r\n name: this.name,\r\n voices: this.voices,\r\n };\r\n }\r\n}\r\n\r\n/**\r\n * Generate request model\r\n */\r\nexport class GenerateRequest implements GenerateRequestData {\r\n public readonly text: string;\r\n public readonly voice: string;\r\n public readonly language: string;\r\n public readonly speed: number;\r\n\r\n constructor(data: Partial & { text: string }) {\r\n if (!data.text || data.text.length === 0) {\r\n throw new Error('Text is required');\r\n }\r\n if (data.text.length > 5000) {\r\n throw new Error('Text must be 5000 characters or less');\r\n }\r\n\r\n this.text = data.text;\r\n this.voice = data.voice || 'heart';\r\n this.language = data.language || 'american_english';\r\n this.speed = data.speed ?? 1.0;\r\n\r\n if (this.speed < 0.5 || this.speed > 2.0) {\r\n throw new Error('Speed must be between 0.5 and 2.0');\r\n }\r\n }\r\n\r\n toJSON(): GenerateRequestData {\r\n return {\r\n text: this.text,\r\n voice: this.voice,\r\n language: this.language,\r\n speed: this.speed,\r\n };\r\n }\r\n}\r\n\r\n/**\r\n * Multi-voice request model\r\n */\r\nexport class MultiVoiceRequest implements MultiVoiceRequestData {\r\n public readonly text: string;\r\n public readonly language: string;\r\n public readonly speed: number;\r\n\r\n constructor(data: Partial & { text: string }) {\r\n if (!data.text || data.text.length === 0) {\r\n throw new Error('Text is required');\r\n }\r\n if (data.text.length > 5000) {\r\n throw new Error('Text must be 5000 characters or less');\r\n }\r\n\r\n this.text = data.text;\r\n this.language = data.language || 'american_english';\r\n this.speed = data.speed ?? 1.0;\r\n\r\n if (this.speed < 0.5 || this.speed > 2.0) {\r\n throw new Error('Speed must be between 0.5 and 2.0');\r\n }\r\n }\r\n\r\n toJSON(): MultiVoiceRequestData {\r\n return {\r\n text: this.text,\r\n language: this.language,\r\n speed: this.speed,\r\n };\r\n }\r\n}\r\n\r\n/**\r\n * Generate response model\r\n */\r\nexport class GenerateResponse implements GenerateResponseData {\r\n public readonly audioData: Buffer;\r\n public readonly duration?: number;\r\n public readonly generationTime?: number;\r\n public readonly charactersProcessed?: number;\r\n\r\n constructor(data: GenerateResponseData) {\r\n this.audioData = Buffer.isBuffer(data.audioData)\r\n ? data.audioData\r\n : Buffer.from(data.audioData);\r\n this.duration = data.duration;\r\n this.generationTime = data.generationTime;\r\n this.charactersProcessed = data.charactersProcessed;\r\n }\r\n\r\n /**\r\n * Get audio as base64 string\r\n */\r\n toBase64(): string {\r\n return this.audioData.toString('base64');\r\n }\r\n\r\n /**\r\n * Get audio as Uint8Array (for browser compatibility)\r\n */\r\n toUint8Array(): Uint8Array {\r\n return new Uint8Array(this.audioData);\r\n }\r\n\r\n /**\r\n * Get audio as ArrayBuffer (for browser compatibility)\r\n */\r\n toArrayBuffer(): ArrayBuffer {\r\n const buffer = this.audioData.buffer.slice(\r\n this.audioData.byteOffset,\r\n this.audioData.byteOffset + this.audioData.byteLength\r\n );\r\n return buffer as ArrayBuffer;\r\n }\r\n}\r\n\r\n/**\r\n * Voices response model\r\n */\r\nexport class VoicesResponse {\r\n public readonly voices: Voice[];\r\n\r\n constructor(data: { voices: VoiceData[] }) {\r\n this.voices = data.voices.map((v) => new Voice(v));\r\n }\r\n}\r\n\r\n/**\r\n * Languages response model\r\n */\r\nexport class LanguagesResponse {\r\n public readonly languages: Language[];\r\n\r\n constructor(data: { languages: LanguageData[] }) {\r\n this.languages = data.languages.map((l) => new Language(l));\r\n }\r\n}\r\n\r\n// ============================================\r\n// Constants\r\n// ============================================\r\n\r\nexport const AMERICAN_VOICES = [\r\n 'heart',\r\n 'bella',\r\n 'nicole',\r\n 'sarah',\r\n 'nova',\r\n 'sky',\r\n 'jessica',\r\n 'river',\r\n 'michael',\r\n 'fenrir',\r\n 'eric',\r\n 'liam',\r\n 'onyx',\r\n 'adam',\r\n] as const;\r\n\r\nexport const BRITISH_VOICES = [\r\n 'emma',\r\n 'isabella',\r\n 'alice',\r\n 'lily',\r\n 'george',\r\n 'fable',\r\n 'lewis',\r\n 'daniel',\r\n] as const;\r\n\r\nexport const ALL_VOICES = [...AMERICAN_VOICES, ...BRITISH_VOICES] as const;\r\n\r\nexport const LANGUAGES = [\r\n 'american_english',\r\n 'british_english',\r\n 'spanish',\r\n 'french',\r\n 'hindi',\r\n 'italian',\r\n 'japanese',\r\n 'brazilian_portuguese',\r\n 'mandarin_chinese',\r\n] as const;\r\n\r\nexport type VoiceId = (typeof ALL_VOICES)[number];\r\nexport type LanguageId = (typeof LANGUAGES)[number];\r\n","/**\r\n * Custom exceptions for LangVoice SDK\r\n */\r\n\r\n/**\r\n * Base exception for LangVoice SDK\r\n */\r\nexport class LangVoiceError extends Error {\r\n public readonly statusCode?: number;\r\n\r\n constructor(message: string, statusCode?: number) {\r\n super(message);\r\n this.name = 'LangVoiceError';\r\n this.statusCode = statusCode;\r\n Object.setPrototypeOf(this, LangVoiceError.prototype);\r\n }\r\n}\r\n\r\n/**\r\n * Raised when API key is invalid or missing\r\n */\r\nexport class AuthenticationError extends LangVoiceError {\r\n constructor(message: string = 'Invalid or missing API key') {\r\n super(message, 401);\r\n this.name = 'AuthenticationError';\r\n Object.setPrototypeOf(this, AuthenticationError.prototype);\r\n }\r\n}\r\n\r\n/**\r\n * Raised when rate limit is exceeded\r\n */\r\nexport class RateLimitError extends LangVoiceError {\r\n constructor(message: string = 'Rate limit exceeded') {\r\n super(message, 429);\r\n this.name = 'RateLimitError';\r\n Object.setPrototypeOf(this, RateLimitError.prototype);\r\n }\r\n}\r\n\r\n/**\r\n * Raised when request validation fails\r\n */\r\nexport class ValidationError extends LangVoiceError {\r\n constructor(message: string) {\r\n super(message, 400);\r\n this.name = 'ValidationError';\r\n Object.setPrototypeOf(this, ValidationError.prototype);\r\n }\r\n}\r\n\r\n/**\r\n * Raised when API returns an error\r\n */\r\nexport class APIError extends LangVoiceError {\r\n constructor(message: string, statusCode?: number) {\r\n super(message, statusCode);\r\n this.name = 'APIError';\r\n Object.setPrototypeOf(this, APIError.prototype);\r\n }\r\n}\r\n\r\n/**\r\n * Check if an error is a LangVoice error\r\n */\r\nexport function isLangVoiceError(error: unknown): error is LangVoiceError {\r\n return error instanceof LangVoiceError;\r\n}\r\n\r\n/**\r\n * Check if an error is an authentication error\r\n */\r\nexport function isAuthenticationError(error: unknown): error is AuthenticationError {\r\n return error instanceof AuthenticationError;\r\n}\r\n\r\n/**\r\n * Check if an error is a rate limit error\r\n */\r\nexport function isRateLimitError(error: unknown): error is RateLimitError {\r\n return error instanceof RateLimitError;\r\n}\r\n","/**\r\n * Main LangVoice API client\r\n */\r\n\r\nimport {\r\n Voice,\r\n Language,\r\n GenerateRequest,\r\n MultiVoiceRequest,\r\n GenerateResponse,\r\n VoicesResponse,\r\n LanguagesResponse,\r\n AMERICAN_VOICES,\r\n BRITISH_VOICES,\r\n ALL_VOICES,\r\n LANGUAGES,\r\n} from './models';\r\n\r\nimport {\r\n AuthenticationError,\r\n RateLimitError,\r\n ValidationError,\r\n APIError,\r\n} from './exceptions';\r\n\r\n// ============================================\r\n// Types\r\n// ============================================\r\n\r\nexport interface LangVoiceClientOptions {\r\n /** API key for authentication */\r\n apiKey?: string;\r\n /** Base URL for the API */\r\n baseUrl?: string;\r\n /** Request timeout in milliseconds */\r\n timeout?: number;\r\n}\r\n\r\nexport interface GenerateOptions {\r\n /** Text to convert to speech (max 5000 characters) */\r\n text: string;\r\n /** Voice ID (e.g., 'heart', 'michael') */\r\n voice?: string;\r\n /** Language code (e.g., 'american_english') */\r\n language?: string;\r\n /** Speech speed from 0.5 to 2.0 */\r\n speed?: number;\r\n}\r\n\r\nexport interface MultiVoiceOptions {\r\n /** Text with [voice] markers */\r\n text: string;\r\n /** Language code for all voices */\r\n language?: string;\r\n /** Speech speed from 0.5 to 2.0 */\r\n speed?: number;\r\n}\r\n\r\n// ============================================\r\n// Client\r\n// ============================================\r\n\r\n/**\r\n * LangVoice API client for text-to-speech generation\r\n *\r\n * @example\r\n * ```typescript\r\n * import { LangVoiceClient } from 'langvoice-sdk';\r\n *\r\n * const client = new LangVoiceClient({ apiKey: 'your-api-key' });\r\n *\r\n * const response = await client.generate({\r\n * text: 'Hello, world!',\r\n * voice: 'heart',\r\n * });\r\n *\r\n * // Save to file (Node.js)\r\n * import { writeFileSync } from 'fs';\r\n * writeFileSync('output.mp3', response.audioData);\r\n * ```\r\n */\r\nexport class LangVoiceClient {\r\n private readonly apiKey: string;\r\n private readonly baseUrl: string;\r\n private readonly timeout: number;\r\n\r\n /** Available American voices */\r\n static readonly AMERICAN_VOICES = AMERICAN_VOICES;\r\n /** Available British voices */\r\n static readonly BRITISH_VOICES = BRITISH_VOICES;\r\n /** All available voices */\r\n static readonly ALL_VOICES = ALL_VOICES;\r\n /** Supported languages */\r\n static readonly LANGUAGES = LANGUAGES;\r\n\r\n constructor(options: LangVoiceClientOptions = {}) {\r\n this.apiKey = options.apiKey || this.getEnvApiKey();\r\n\r\n if (!this.apiKey) {\r\n throw new AuthenticationError(\r\n 'API key is required. Pass apiKey in options or set LANGVOICE_API_KEY environment variable.'\r\n );\r\n }\r\n\r\n this.baseUrl = options.baseUrl || 'https://www.langvoice.pro/api';\r\n this.timeout = options.timeout || 60000;\r\n }\r\n\r\n /**\r\n * Get API key from environment variable\r\n */\r\n private getEnvApiKey(): string {\r\n // Node.js environment\r\n if (typeof process !== 'undefined' && process.env) {\r\n return process.env.LANGVOICE_API_KEY || '';\r\n }\r\n return '';\r\n }\r\n\r\n /**\r\n * Make HTTP request\r\n */\r\n private async request(\r\n method: 'GET' | 'POST',\r\n endpoint: string,\r\n body?: Record\r\n ): Promise<{ data: T; headers: Headers }> {\r\n const url = `${this.baseUrl}${endpoint}`;\r\n\r\n const controller = new AbortController();\r\n const timeoutId = setTimeout(() => controller.abort(), this.timeout);\r\n\r\n try {\r\n const response = await fetch(url, {\r\n method,\r\n headers: {\r\n 'X-API-Key': this.apiKey,\r\n 'Content-Type': 'application/json',\r\n },\r\n body: body ? JSON.stringify(body) : undefined,\r\n signal: controller.signal,\r\n });\r\n\r\n clearTimeout(timeoutId);\r\n\r\n await this.handleResponseErrors(response);\r\n\r\n return {\r\n data: (await response.json()) as T,\r\n headers: response.headers,\r\n };\r\n } catch (error) {\r\n clearTimeout(timeoutId);\r\n\r\n if (error instanceof Error && error.name === 'AbortError') {\r\n throw new APIError('Request timeout', 408);\r\n }\r\n\r\n throw error;\r\n }\r\n }\r\n\r\n /**\r\n * Make HTTP request for binary data\r\n */\r\n private async requestBinary(\r\n method: 'POST',\r\n endpoint: string,\r\n body: object\r\n ): Promise<{ data: ArrayBuffer; headers: Headers }> {\r\n const url = `${this.baseUrl}${endpoint}`;\r\n\r\n const controller = new AbortController();\r\n const timeoutId = setTimeout(() => controller.abort(), this.timeout);\r\n\r\n try {\r\n const response = await fetch(url, {\r\n method,\r\n headers: {\r\n 'X-API-Key': this.apiKey,\r\n 'Content-Type': 'application/json',\r\n },\r\n body: JSON.stringify(body),\r\n signal: controller.signal,\r\n });\r\n\r\n clearTimeout(timeoutId);\r\n\r\n await this.handleResponseErrors(response);\r\n\r\n return {\r\n data: await response.arrayBuffer(),\r\n headers: response.headers,\r\n };\r\n } catch (error) {\r\n clearTimeout(timeoutId);\r\n\r\n if (error instanceof Error && error.name === 'AbortError') {\r\n throw new APIError('Request timeout', 408);\r\n }\r\n\r\n throw error;\r\n }\r\n }\r\n\r\n /**\r\n * Handle API response errors\r\n */\r\n private async handleResponseErrors(response: Response): Promise {\r\n if (response.ok) return;\r\n\r\n let errorMessage: string;\r\n\r\n try {\r\n const errorData = (await response.json()) as { error?: string };\r\n errorMessage = errorData.error || `API error: ${response.status}`;\r\n } catch {\r\n errorMessage = response.statusText || `API error: ${response.status}`;\r\n }\r\n\r\n switch (response.status) {\r\n case 401:\r\n throw new AuthenticationError(errorMessage);\r\n case 429:\r\n throw new RateLimitError(errorMessage);\r\n case 400:\r\n throw new ValidationError(errorMessage);\r\n default:\r\n throw new APIError(errorMessage, response.status);\r\n }\r\n }\r\n\r\n /**\r\n * Parse float header value\r\n */\r\n private parseFloatHeader(value: string | null): number | undefined {\r\n if (!value) return undefined;\r\n const parsed = parseFloat(value.replace('s', ''));\r\n return isNaN(parsed) ? undefined : parsed;\r\n }\r\n\r\n /**\r\n * Parse int header value\r\n */\r\n private parseIntHeader(value: string | null): number | undefined {\r\n if (!value) return undefined;\r\n const parsed = parseInt(value, 10);\r\n return isNaN(parsed) ? undefined : parsed;\r\n }\r\n\r\n /**\r\n * Generate speech from text\r\n *\r\n * @param options - Generation options\r\n * @returns GenerateResponse with audio data and metadata\r\n *\r\n * @example\r\n * ```typescript\r\n * const response = await client.generate({\r\n * text: 'Hello world!',\r\n * voice: 'heart',\r\n * language: 'american_english',\r\n * speed: 1.0,\r\n * });\r\n *\r\n * console.log(`Duration: ${response.duration}s`);\r\n * ```\r\n */\r\n async generate(options: GenerateOptions): Promise {\r\n const request = new GenerateRequest({\r\n text: options.text,\r\n voice: options.voice,\r\n language: options.language,\r\n speed: options.speed,\r\n });\r\n\r\n const { data, headers } = await this.requestBinary(\r\n 'POST',\r\n '/tts/generate',\r\n request.toJSON()\r\n );\r\n\r\n return new GenerateResponse({\r\n audioData: data,\r\n duration: this.parseFloatHeader(headers.get('X-Audio-Duration')),\r\n generationTime: this.parseFloatHeader(headers.get('X-Generation-Time')),\r\n charactersProcessed: this.parseIntHeader(headers.get('X-Characters-Processed')),\r\n });\r\n }\r\n\r\n /**\r\n * Generate speech with multiple voices\r\n *\r\n * @param options - Multi-voice options\r\n * @returns GenerateResponse with audio data and metadata\r\n *\r\n * @example\r\n * ```typescript\r\n * const response = await client.generateMultiVoice({\r\n * text: '[heart] Hello! [michael] Hi there!',\r\n * language: 'american_english',\r\n * });\r\n * ```\r\n */\r\n async generateMultiVoice(options: MultiVoiceOptions): Promise {\r\n const request = new MultiVoiceRequest({\r\n text: options.text,\r\n language: options.language,\r\n speed: options.speed,\r\n });\r\n\r\n const { data, headers } = await this.requestBinary(\r\n 'POST',\r\n '/tts/multi-voice-text',\r\n request.toJSON()\r\n );\r\n\r\n return new GenerateResponse({\r\n audioData: data,\r\n duration: this.parseFloatHeader(headers.get('X-Audio-Duration')),\r\n generationTime: this.parseFloatHeader(headers.get('X-Generation-Time')),\r\n charactersProcessed: this.parseIntHeader(headers.get('X-Characters-Processed')),\r\n });\r\n }\r\n\r\n /**\r\n * Get all available voices\r\n *\r\n * @returns Array of Voice objects\r\n *\r\n * @example\r\n * ```typescript\r\n * const voices = await client.listVoices();\r\n * voices.forEach(v => console.log(`${v.id}: ${v.name}`));\r\n * ```\r\n */\r\n async listVoices(): Promise {\r\n const { data } = await this.request<{ voices: Voice[] }>('GET', '/tts/voices');\r\n return new VoicesResponse(data).voices;\r\n }\r\n\r\n /**\r\n * Get all supported languages\r\n *\r\n * @returns Array of Language objects\r\n *\r\n * @example\r\n * ```typescript\r\n * const languages = await client.listLanguages();\r\n * languages.forEach(l => console.log(`${l.id}: ${l.name}`));\r\n * ```\r\n */\r\n async listLanguages(): Promise {\r\n const { data } = await this.request<{ languages: Language[] }>('GET', '/tts/languages');\r\n return new LanguagesResponse(data).languages;\r\n }\r\n\r\n /**\r\n * Simple method to convert text to speech and return audio buffer\r\n *\r\n * @param text - Text to convert\r\n * @param voice - Voice ID\r\n * @param language - Language code\r\n * @param speed - Speech speed\r\n * @returns Audio data as Buffer\r\n *\r\n * @example\r\n * ```typescript\r\n * const audioBuffer = await client.textToSpeech('Hello!', 'heart');\r\n * ```\r\n */\r\n async textToSpeech(\r\n text: string,\r\n voice: string = 'heart',\r\n language: string = 'american_english',\r\n speed: number = 1.0\r\n ): Promise {\r\n const response = await this.generate({ text, voice, language, speed });\r\n return response.audioData;\r\n }\r\n\r\n /**\r\n * Get the API key (useful for passing to tools)\r\n */\r\n getApiKey(): string {\r\n return this.apiKey;\r\n }\r\n}\r\n","/**\r\n * Shared types for LangVoice tools\r\n */\r\n\r\n// ============================================\r\n// Common Types\r\n// ============================================\r\n\r\n/**\r\n * Base result interface for all tool operations\r\n */\r\nexport interface BaseToolResult {\r\n success: boolean;\r\n error?: string;\r\n}\r\n\r\n/**\r\n * Result from TTS generation tools\r\n */\r\nexport interface TTSResult extends BaseToolResult {\r\n audioBase64?: string;\r\n audioBuffer?: Buffer;\r\n duration?: number;\r\n generationTime?: number;\r\n charactersProcessed?: number;\r\n}\r\n\r\n/**\r\n * Result from list voices tool\r\n */\r\nexport interface VoicesResult extends BaseToolResult {\r\n voices?: VoiceInfo[];\r\n}\r\n\r\n/**\r\n * Result from list languages tool\r\n */\r\nexport interface LanguagesResult extends BaseToolResult {\r\n languages?: LanguageInfo[];\r\n}\r\n\r\n/**\r\n * Voice information\r\n */\r\nexport interface VoiceInfo {\r\n id: string;\r\n name: string;\r\n gender?: string;\r\n language?: string;\r\n description?: string;\r\n}\r\n\r\n/**\r\n * Language information\r\n */\r\nexport interface LanguageInfo {\r\n id: string;\r\n name: string;\r\n voices?: string[];\r\n}\r\n\r\n// ============================================\r\n// Tool Input Types\r\n// ============================================\r\n\r\n/**\r\n * Input for text-to-speech generation\r\n */\r\nexport interface TTSInput {\r\n text: string;\r\n voice?: string;\r\n language?: string;\r\n speed?: number;\r\n}\r\n\r\n/**\r\n * Input for multi-voice generation\r\n */\r\nexport interface MultiVoiceInput {\r\n text: string;\r\n language?: string;\r\n speed?: number;\r\n}\r\n\r\n// ============================================\r\n// Function Schema Types\r\n// ============================================\r\n\r\n/**\r\n * JSON Schema property definition\r\n */\r\nexport interface SchemaProperty {\r\n type: string;\r\n description?: string;\r\n enum?: string[];\r\n default?: unknown;\r\n minimum?: number;\r\n maximum?: number;\r\n}\r\n\r\n/**\r\n * Function parameters schema\r\n */\r\nexport interface FunctionParameters {\r\n type: 'object';\r\n properties: Record;\r\n required: string[];\r\n [key: string]: unknown;\r\n}\r\n\r\n/**\r\n * Function schema definition\r\n */\r\nexport interface FunctionSchema {\r\n name: string;\r\n description: string;\r\n parameters: FunctionParameters;\r\n}\r\n\r\n/**\r\n * OpenAI tool definition format\r\n */\r\nexport interface OpenAIToolDefinition {\r\n type: 'function';\r\n function: FunctionSchema;\r\n}\r\n\r\n/**\r\n * OpenAI tool call format\r\n */\r\nexport interface OpenAIToolCall {\r\n id: string;\r\n type: 'function';\r\n function: {\r\n name: string;\r\n arguments: string;\r\n };\r\n}\r\n\r\n// ============================================\r\n// AutoGen Types\r\n// ============================================\r\n\r\n/**\r\n * AutoGen function definition\r\n */\r\nexport interface AutoGenFunctionDef {\r\n name: string;\r\n description: string;\r\n parameters: FunctionParameters;\r\n}\r\n\r\n/**\r\n * AutoGen tool configuration\r\n */\r\nexport interface AutoGenToolConfig {\r\n functions: AutoGenFunctionDef[];\r\n}\r\n\r\n/**\r\n * AutoGen function call\r\n */\r\nexport interface AutoGenFunctionCall {\r\n name: string;\r\n arguments: Record | string;\r\n}\r\n\r\n// ============================================\r\n// LangChain Types\r\n// ============================================\r\n\r\n/**\r\n * LangChain tool input schema\r\n */\r\nexport interface LangChainInputSchema {\r\n type: 'object';\r\n properties: Record;\r\n required?: string[];\r\n}\r\n\r\n/**\r\n * LangChain tool metadata\r\n */\r\nexport interface LangChainToolMetadata {\r\n name: string;\r\n description: string;\r\n schema?: LangChainInputSchema;\r\n}\r\n\r\n// ============================================\r\n// Constants\r\n// ============================================\r\n\r\n/**\r\n * Tool name constants\r\n */\r\nexport const TOOL_NAMES = {\r\n TTS: 'langvoice_text_to_speech',\r\n MULTI_VOICE: 'langvoice_multi_voice_speech',\r\n LIST_VOICES: 'langvoice_list_voices',\r\n LIST_LANGUAGES: 'langvoice_list_languages',\r\n} as const;\r\n\r\nexport type ToolName = (typeof TOOL_NAMES)[keyof typeof TOOL_NAMES];\r\n\r\n/**\r\n * Available voices\r\n */\r\nexport const VOICES = {\r\n AMERICAN: [\r\n 'heart', 'bella', 'nicole', 'sarah', 'nova', 'sky', 'jessica',\r\n 'river', 'michael', 'fenrir', 'eric', 'liam', 'onyx', 'adam',\r\n ],\r\n BRITISH: [\r\n 'emma', 'isabella', 'alice', 'lily', 'george', 'fable', 'lewis', 'daniel',\r\n ],\r\n} as const;\r\n\r\nexport const ALL_VOICES = [...VOICES.AMERICAN, ...VOICES.BRITISH] as const;\r\n\r\n/**\r\n * Supported languages\r\n */\r\nexport const LANGUAGES = [\r\n 'american_english',\r\n 'british_english',\r\n 'spanish',\r\n 'french',\r\n 'hindi',\r\n 'italian',\r\n 'japanese',\r\n 'brazilian_portuguese',\r\n 'mandarin_chinese',\r\n] as const;\r\n\r\nexport type VoiceId = (typeof ALL_VOICES)[number];\r\nexport type LanguageId = (typeof LANGUAGES)[number];\r\n","/**\r\n * LangChain tools for LangVoice TTS\r\n */\r\n\r\nimport { LangVoiceClient } from '../client';\r\nimport { TOOL_NAMES } from './types';\r\n\r\n// ============================================\r\n// Types\r\n// ============================================\r\n\r\ninterface ToolInput {\r\n text: string;\r\n voice?: string;\r\n language?: string;\r\n speed?: number;\r\n}\r\n\r\ninterface MultiVoiceInput {\r\n text: string;\r\n language?: string;\r\n speed?: number;\r\n}\r\n\r\n// ============================================\r\n// Base Tool Class (Compatible with LangChain)\r\n// ============================================\r\n\r\n/**\r\n * Base class for LangVoice tools\r\n * Can be used standalone or with LangChain\r\n */\r\nabstract class BaseLangVoiceTool {\r\n abstract name: string;\r\n abstract description: string;\r\n protected client: LangVoiceClient;\r\n protected outputFile?: string;\r\n\r\n constructor(options: { apiKey?: string; outputFile?: string } = {}) {\r\n this.client = new LangVoiceClient({ apiKey: options.apiKey });\r\n this.outputFile = options.outputFile;\r\n }\r\n\r\n abstract call(input: unknown): Promise;\r\n\r\n /**\r\n * Make this tool compatible with LangChain\r\n */\r\n async invoke(input: unknown): Promise {\r\n return this.call(input);\r\n }\r\n}\r\n\r\n// ============================================\r\n// Tool Implementations\r\n// ============================================\r\n\r\n/**\r\n * LangChain-compatible tool for text-to-speech generation\r\n */\r\nexport class LangVoiceTTSTool extends BaseLangVoiceTool {\r\n name = TOOL_NAMES.TTS;\r\n description =\r\n 'Convert text to natural-sounding speech audio using LangVoice TTS. ' +\r\n 'Saves audio to output.mp3 and returns confirmation with duration.';\r\n\r\n constructor(options: { apiKey?: string; outputFile?: string } = {}) {\r\n super(options);\r\n this.outputFile = options.outputFile || 'output.mp3';\r\n }\r\n\r\n async call(input: ToolInput | string): Promise {\r\n try {\r\n const params: ToolInput = typeof input === 'string' ? { text: input } : input;\r\n\r\n const response = await this.client.generate({\r\n text: params.text,\r\n voice: params.voice || 'heart',\r\n language: params.language || 'american_english',\r\n speed: params.speed || 1.0,\r\n });\r\n\r\n if (this.outputFile) {\r\n try {\r\n const fs = await import('fs');\r\n fs.writeFileSync(this.outputFile, response.audioData);\r\n return (\r\n `✅ Speech generated and saved to ${this.outputFile}! ` +\r\n `Duration: ${response.duration}s, ` +\r\n `Characters: ${response.charactersProcessed}`\r\n );\r\n } catch {\r\n return (\r\n `✅ Speech generated! Duration: ${response.duration}s. ` +\r\n `Audio (base64): ${response.toBase64().substring(0, 100)}...`\r\n );\r\n }\r\n }\r\n\r\n return (\r\n `✅ Speech generated! Duration: ${response.duration}s. ` +\r\n `Audio (base64): ${response.toBase64().substring(0, 100)}...`\r\n );\r\n } catch (error) {\r\n return `❌ Error generating speech: ${error instanceof Error ? error.message : 'Unknown error'}`;\r\n }\r\n }\r\n}\r\n\r\n/**\r\n * LangChain-compatible tool for multi-voice speech generation\r\n */\r\nexport class LangVoiceMultiVoiceTool extends BaseLangVoiceTool {\r\n name = TOOL_NAMES.MULTI_VOICE;\r\n description =\r\n 'Generate speech with multiple voices using bracket notation. ' +\r\n \"Use [voice_name] to switch voices. Example: '[heart] Hello! [michael] Hi there!'\";\r\n\r\n async call(input: MultiVoiceInput | string): Promise {\r\n try {\r\n const params: MultiVoiceInput = typeof input === 'string' ? { text: input } : input;\r\n\r\n const response = await this.client.generateMultiVoice({\r\n text: params.text,\r\n language: params.language || 'american_english',\r\n speed: params.speed || 1.0,\r\n });\r\n\r\n if (this.outputFile) {\r\n try {\r\n const fs = await import('fs');\r\n fs.writeFileSync(this.outputFile, response.audioData);\r\n return (\r\n `✅ Multi-voice speech generated and saved to ${this.outputFile}! ` +\r\n `Duration: ${response.duration}s`\r\n );\r\n } catch {\r\n return (\r\n `✅ Multi-voice speech generated! Duration: ${response.duration}s. ` +\r\n `Audio available in base64 format.`\r\n );\r\n }\r\n }\r\n\r\n return (\r\n `✅ Multi-voice speech generated! Duration: ${response.duration}s. ` +\r\n `Audio available in base64 format.`\r\n );\r\n } catch (error) {\r\n return `❌ Error generating multi-voice speech: ${error instanceof Error ? error.message : 'Unknown error'}`;\r\n }\r\n }\r\n}\r\n\r\n/**\r\n * LangChain-compatible tool for listing voices\r\n */\r\nexport class LangVoiceVoicesTool extends BaseLangVoiceTool {\r\n name = TOOL_NAMES.LIST_VOICES;\r\n description = 'Get a list of all available voices for text-to-speech generation.';\r\n\r\n async call(): Promise {\r\n try {\r\n const voices = await this.client.listVoices();\r\n const voiceList = voices.map((v) => `${v.id} (${v.name})`).join(', ');\r\n return `Available voices: ${voiceList}`;\r\n } catch (error) {\r\n return `Error listing voices: ${error instanceof Error ? error.message : 'Unknown error'}`;\r\n }\r\n }\r\n}\r\n\r\n/**\r\n * LangChain-compatible tool for listing languages\r\n */\r\nexport class LangVoiceLanguagesTool extends BaseLangVoiceTool {\r\n name = TOOL_NAMES.LIST_LANGUAGES;\r\n description = 'Get a list of all supported languages for text-to-speech generation.';\r\n\r\n async call(): Promise {\r\n try {\r\n const languages = await this.client.listLanguages();\r\n const langList = languages.map((l) => `${l.id} (${l.name})`).join(', ');\r\n return `Supported languages: ${langList}`;\r\n } catch (error) {\r\n return `Error listing languages: ${error instanceof Error ? error.message : 'Unknown error'}`;\r\n }\r\n }\r\n}\r\n\r\n// ============================================\r\n// Toolkit Class\r\n// ============================================\r\n\r\n/**\r\n * Convenience class for using LangVoice with LangChain\r\n *\r\n * @example\r\n * ```typescript\r\n * import { LangVoiceLangChainToolkit } from 'langvoice-sdk/tools';\r\n *\r\n * const toolkit = new LangVoiceLangChainToolkit({ apiKey: 'your-langvoice-key' });\r\n * const tools = toolkit.getTools();\r\n *\r\n * // Use with LangChain agent\r\n * ```\r\n */\r\nexport class LangVoiceLangChainToolkit {\r\n private readonly apiKey?: string;\r\n\r\n constructor(options: { apiKey?: string } = {}) {\r\n this.apiKey = options.apiKey;\r\n }\r\n\r\n /**\r\n * Get all LangVoice tools\r\n */\r\n getTools(): BaseLangVoiceTool[] {\r\n return [\r\n new LangVoiceTTSTool({ apiKey: this.apiKey }),\r\n new LangVoiceMultiVoiceTool({ apiKey: this.apiKey }),\r\n new LangVoiceVoicesTool({ apiKey: this.apiKey }),\r\n new LangVoiceLanguagesTool({ apiKey: this.apiKey }),\r\n ];\r\n }\r\n\r\n /**\r\n * Get the text-to-speech tool\r\n */\r\n getTTSTool(outputFile?: string): LangVoiceTTSTool {\r\n return new LangVoiceTTSTool({ apiKey: this.apiKey, outputFile });\r\n }\r\n\r\n /**\r\n * Get the multi-voice tool\r\n */\r\n getMultiVoiceTool(outputFile?: string): LangVoiceMultiVoiceTool {\r\n return new LangVoiceMultiVoiceTool({ apiKey: this.apiKey, outputFile });\r\n }\r\n\r\n /**\r\n * Get the list voices tool\r\n */\r\n getVoicesTool(): LangVoiceVoicesTool {\r\n return new LangVoiceVoicesTool({ apiKey: this.apiKey });\r\n }\r\n\r\n /**\r\n * Get the list languages tool\r\n */\r\n getLanguagesTool(): LangVoiceLanguagesTool {\r\n return new LangVoiceLanguagesTool({ apiKey: this.apiKey });\r\n }\r\n}\r\n\r\n/**\r\n * Get all LangChain tools\r\n */\r\nexport function getAllLangChainTools(apiKey?: string): BaseLangVoiceTool[] {\r\n return new LangVoiceLangChainToolkit({ apiKey }).getTools();\r\n}\r\n"]}