import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
import {
CallToolResultSchema,
ReadResourceResultSchema,
} from "@modelcontextprotocol/sdk/types.js";
import type {
TextContent,
EmbeddedResource,
CallToolRequest,
CallToolResult,
BlobResourceContents,
TextResourceContents,
ReadResourceRequest,
ReadResourceResult,
} from "@modelcontextprotocol/sdk/types.js";
export interface JobHistory {
id: string;
status: "pending" | "processing" | "completed" | "failed";
script_parts: ScriptPart[];
output_file?: string;
error?: string;
created_at: string;
updated_at: string;
total_parts: number;
completed_parts: number;
}
export interface Voice {
voice_id: string;
name: string;
category?: string;
description?: string;
labels?: Record<string, string>;
preview_url?: string;
is_default?: boolean;
}
export interface AudioGenerationResponse {
success: boolean;
message: string;
debugInfo: string[];
audioData?: {
uri: string;
name: string;
data: string; // base64 encoded audio
};
}
interface ScriptInterface {
script: ScriptPart[];
}
export interface ScriptPart {
text: string;
voice_id?: string;
actor?: string;
}
export class ElevenLabsClient {
private client: Client;
private connectionPromise: Promise<void>;
constructor(command: string, args?: string[]) {
const transport = new StdioClientTransport({
command,
args,
});
console.log("command:", command, "args:", args);
this.client = new Client(
{
name: "elevenlabs-client",
version: "0.1.0",
},
{
capabilities: {},
}
);
// Initialize connection promise
this.connectionPromise = this.client.connect(transport);
this.connectionPromise.catch((error: Error) => {
console.error("Failed to connect:", error);
});
}
private parseHistoryResponse(response: ReadResourceResult): JobHistory[] {
console.log("Raw history response:", response);
for (const content of response.contents) {
if (
content.mimeType === "text/plain" &&
typeof content.text === "string"
) {
try {
// Clean up the text content by removing any leading/trailing whitespace and quotes
const cleanText = content.text.trim().replace(/^['"]|['"]$/g, "");
const parsed = JSON.parse(cleanText);
if (Array.isArray(parsed)) {
return parsed as JobHistory[];
} else if (typeof parsed === "object" && parsed !== null) {
// If we got a single job object, wrap it in an array
return [parsed as JobHistory];
}
} catch (error) {
console.error("Error parsing history response:", error);
// Try to parse as a string concatenation
try {
const concatenatedJson = content.text
.split("\n")
.map((line) => line.trim())
.join("")
.replace(/^['"]|['"]$/g, "")
.replace(/\s*\+\s*/g, "");
console.log(
"Attempting to parse concatenated JSON:",
concatenatedJson
);
const parsed = JSON.parse(concatenatedJson);
if (Array.isArray(parsed)) {
return parsed as JobHistory[];
} else if (typeof parsed === "object" && parsed !== null) {
return [parsed as JobHistory];
}
} catch (innerError) {
console.error("Error parsing concatenated JSON:", innerError);
}
}
}
}
return [];
}
private parseToolResponse(response: CallToolResult): AudioGenerationResponse {
const result: AudioGenerationResponse = {
success: false,
message: "",
debugInfo: [],
};
if (response.content) {
for (const content of response.content) {
if (content.type === "text") {
// Split the text content into lines
const lines = content.text.split("\n");
// First line is the status message
result.message = lines[0];
// Rest are debug info (skip the "Debug info:" line)
result.debugInfo = lines.slice(2);
// Check if the message indicates success
result.success = result.message.includes("successful");
} else if (content.type === "resource") {
const resource = content.resource as BlobResourceContents;
result.audioData = {
uri: resource.uri,
name:
(resource.name as string) ||
resource.uri.split("/").pop() ||
"audio",
data: resource.blob,
};
}
}
}
return result;
}
async generateSimpleAudio(
text: string,
voice_id?: string
): Promise<AudioGenerationResponse> {
try {
// Wait for connection before making request
await this.connectionPromise;
const request: CallToolRequest = {
method: "tools/call",
params: {
name: "generate_audio_simple",
arguments: {
text,
voice_id,
},
},
};
const response = await this.client.request(request, CallToolResultSchema);
return this.parseToolResponse(response);
} catch (error: unknown) {
const errorMessage =
error instanceof Error ? error.message : String(error);
return {
success: false,
message: `Error generating audio: ${errorMessage}`,
debugInfo: [],
};
}
}
async generateScriptAudio(
script: string | ScriptInterface
): Promise<AudioGenerationResponse> {
try {
// Wait for connection before making request
await this.connectionPromise;
const scriptJson =
typeof script === "string" ? script : JSON.stringify(script);
const request: CallToolRequest = {
method: "tools/call",
params: {
name: "generate_audio_script",
arguments: {
script: scriptJson,
},
},
};
const response = await this.client.request(request, CallToolResultSchema);
return this.parseToolResponse(response);
} catch (error: unknown) {
const errorMessage =
error instanceof Error ? error.message : String(error);
return {
success: false,
message: `Error generating audio: ${errorMessage}`,
debugInfo: [],
};
}
}
async getJobHistory(): Promise<JobHistory[]> {
try {
await this.connectionPromise;
const request: ReadResourceRequest = {
method: "resources/read",
params: {
uri: "voiceover://history",
},
};
const response = await this.client.request(
request,
ReadResourceResultSchema
);
return this.parseHistoryResponse(response);
} catch (error) {
console.error("Error fetching job history:", error);
return [];
}
}
async getJobById(jobId: string): Promise<JobHistory | null> {
try {
await this.connectionPromise;
const request: ReadResourceRequest = {
method: "resources/read",
params: {
uri: `voiceover://history/${jobId}`,
},
};
const response = await this.client.request(
request,
ReadResourceResultSchema
);
const jobs = this.parseHistoryResponse(response);
return jobs.length > 0 ? jobs[0] : null;
} catch (error) {
console.error("Error fetching job:", error);
return null;
}
}
async getAudioFile(jobId: string): Promise<{
success: boolean;
audioData?: {
data: string;
name: string;
mimeType: string;
};
error?: string;
}> {
try {
await this.connectionPromise;
const request: CallToolRequest = {
method: "tools/call",
params: {
name: "get_audio_file",
arguments: {
job_id: jobId,
},
},
};
const response = await this.client.request(request, CallToolResultSchema);
// Check for error message
for (const content of response.content) {
if (content.type === "text") {
return {
success: false,
error: content.text,
};
}
}
// Look for audio file content
for (const content of response.content) {
if (content.type === "resource") {
const resource = content.resource as BlobResourceContents;
return {
success: true,
audioData: {
data: resource.blob,
name: resource.name as string,
mimeType: resource.mimeType || "audio/mpeg",
},
};
}
}
return {
success: false,
error: "No audio content found in response",
};
} catch (error) {
console.error("Error getting audio file:", error);
return {
success: false,
error: error instanceof Error ? error.message : String(error),
};
}
}
async deleteJob(jobId: string): Promise<boolean> {
try {
await this.connectionPromise;
const request: CallToolRequest = {
method: "tools/call",
params: {
name: "delete_job",
arguments: {
job_id: jobId,
},
},
};
const response = await this.client.request(request, CallToolResultSchema);
// Check if deletion was successful based on response message
for (const content of response.content) {
if (content.type === "text") {
return content.text.includes("Successfully deleted");
}
}
return false;
} catch (error) {
console.error("Error deleting job:", error);
return false;
}
}
async getVoices(): Promise<Voice[]> {
try {
await this.connectionPromise;
const request: ReadResourceRequest = {
method: "resources/read",
params: {
uri: "voiceover://voices",
},
};
const response = await this.client.request(request, ReadResourceResultSchema);
for (const content of response.contents) {
if (content.mimeType === "text/plain" && typeof content.text === "string") {
try {
const voices = JSON.parse(content.text);
if (Array.isArray(voices)) {
return voices as Voice[];
}
} catch (error) {
console.error("Error parsing voices response:", error);
}
}
}
return [];
} catch (error) {
console.error("Error fetching voices:", error);
return [];
}
}
async close(): Promise<void> {
try {
// Wait for connection before closing
await this.connectionPromise;
if (this.client) {
await this.client.close();
}
} catch (error) {
console.error("Error closing client:", error);
}
}
}
