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feat(api): 重构API以支持模拟数据和AI服务

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This commit is contained in:
zyh 2024-10-22 01:24:06 +00:00
parent c550e6bfe4
commit f15f693a1c
1 changed files with 60 additions and 51 deletions
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111
app/routes/api.enhancer.ts
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@ -24,59 +24,68 @@ function* mockDataGenerator(message: string) {
// 环境变量或配置来控制是否使用模拟数据
// const USE_MOCK_DATA = process.env.USE_MOCK_DATA === 'true';
const USE_MOCK_DATA = true;
const USE_MOCK_DATA = false;
export async function action({ context, request }: ActionFunctionArgs) {
const { message } = await request.json<{ message: string }>();
export async function action({ request, context }: ActionFunctionArgs) {
const { message } = (await request.json()) as { message: string };
try {
if (USE_MOCK_DATA) {
// 使用模拟数据
const stream = new ReadableStream({
async start(controller) {
for (const chunk of mockDataGenerator(message)) {
controller.enqueue(encoder.encode(`0:${JSON.stringify(chunk)}\n`));
await new Promise(resolve => setTimeout(resolve, 50)); // 模拟延迟
}
controller.enqueue(encoder.encode('e:{"finishReason":"unknown","usage":{"promptTokens":null,"completionTokens":null},"isContinued":false}\n'));
controller.enqueue(encoder.encode('d:{"finishReason":"unknown","usage":{"promptTokens":null,"completionTokens":null}}\n'));
controller.close();
}
});
let stream: ReadableStream;
return new Response(stream, {
headers: { 'Content-Type': 'text/plain; charset=utf-8' }
});
} else {
// 使用实际 AI 服务
const result = await streamText(
[
{
role: 'user',
content: stripIndents`
I want you to improve the user prompt that is wrapped in \`<original_prompt>\` tags.
IMPORTANT: Only respond with the improved prompt and nothing else!
Also, please ensure your response is entirely in Chinese.
<original_prompt>
${message}
</original_prompt>
`,
},
],
context.cloudflare.env,
);
return result.toDataStreamResponse();
}
} catch (error) {
console.log(error);
throw new Response(null, {
status: 500,
statusText: 'Internal Server Error',
});
if (USE_MOCK_DATA) {
stream = createMockStream(message);
} else {
stream = await createAIStream(message, context.cloudflare.env);
}
return new Response(stream, {
headers: {
'Content-Type': 'text/event-stream',
'Cache-Control': 'no-cache',
Connection: 'keep-alive',
},
});
}
function createMockStream(message: string): ReadableStream {
return new ReadableStream({
async start(controller) {
for (const chunk of mockDataGenerator(message)) {
controller.enqueue(encoder.encode(`0:${JSON.stringify(chunk)}\n`));
await new Promise((resolve) => setTimeout(resolve, 50));
}
controller.enqueue(
encoder.encode(
'e:{"finishReason":"unknown","usage":{"promptTokens":null,"completionTokens":null},"isContinued":false}\n',
),
);
controller.enqueue(
encoder.encode('d:{"finishReason":"unknown","usage":{"promptTokens":null,"completionTokens":null}}\n'),
);
controller.close();
},
});
}
async function createAIStream(message: string, env: any): Promise<ReadableStream> {
const result = await streamText(
[
{
role: 'user',
content: stripIndents`
I want you to improve the user prompt that is wrapped in \`<original_prompt>\` tags.
IMPORTANT: Only respond with the improved prompt and nothing else!
Also, please ensure your response is entirely in Chinese.
<original_prompt>
${message}
</original_prompt>
`,
},
],
env,
);
return result.toDataStreamResponse().body as ReadableStream;
}