模型网关

import OpenAI from 'openai';

const openai = new OpenAI({
  baseURL: 'https://openrouter.ai/api/v1',
  apiKey: process.env.OPENROUTER_API_KEY,
});

const completion = await openai.chat.completions.create({
  model: 'openai/gpt-4o-mini',
  messages: [{ role: 'user', content: 'Summarize this note.' }],
});

struct ChatRequest: Encodable {
    let prompt: String
}

struct ChatResponse: Decodable {
    let text: String
}

func sendPrompt(_ prompt: String, sessionToken: String) async throws -> ChatResponse {
    let url = URL(string: "https://your-app.example/api/chat")!
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.setValue("Bearer \\(sessionToken)", forHTTPHeaderField: "Authorization")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.httpBody = try JSONEncoder().encode(ChatRequest(prompt: prompt))

    let (data, response) = try await URLSession.shared.data(for: request)
    guard let httpResponse = response as? HTTPURLResponse,
          (200..<300).contains(httpResponse.statusCode) else {
        throw URLError(.badServerResponse)
    }

    return try JSONDecoder().decode(ChatResponse.self, from: data)
}