import { connectRedis } from '../redis';
import { VecModelDataIdx } from '@/constants/redis';
import { vectorToBuffer } from '@/utils/tools';
import { ModelDataStatusEnum } from '@/constants/redis';
import { openaiCreateEmbedding, getOpenApiKey } from '../utils/openai';

export async function generateVector(next = false): Promise<any> {
  if (process.env.queueTask !== '1') {
    fetch(process.env.parentUrl || '');
    return;
  }

  if (global.generatingVector && !next) return;

  global.generatingVector = true;
  let dataId = null;
  try {
    const redis = await connectRedis();

    // 从找出一个 status = waiting 的数据
    const searchRes = await redis.ft.search(
      VecModelDataIdx,
      `@status:{${ModelDataStatusEnum.waiting}}`,
      {
        RETURN: ['q', 'userId'],
        LIMIT: {
          from: 0,
          size: 1
        }
      }
    );

    if (searchRes.total === 0) {
      console.log('没有需要生成 【向量】 的数据');
      global.generatingVector = false;
      return;
    }

    const dataItem: { id: string; q: string; userId: string } = {
      id: searchRes.documents[0].id,
      q: String(searchRes.documents[0]?.value?.q || ''),
      userId: String(searchRes.documents[0]?.value?.userId || '')
    };

    dataId = dataItem.id;

    // 获取 openapi Key
    let userApiKey, systemKey;
    try {
      const res = await getOpenApiKey(dataItem.userId);
      userApiKey = res.userApiKey;
      systemKey = res.systemKey;
    } catch (error: any) {
      if (error?.code === 501) {
        await redis.del(dataItem.id);
        generateVector(true);
        return;
      }

      throw new Error('获取 openai key 失败');
    }

    // 生成词向量
    const { vector } = await openaiCreateEmbedding({
      text: dataItem.q,
      userId: dataItem.userId,
      isPay: !userApiKey,
      apiKey: userApiKey || systemKey
    });

    // 更新 redis 向量和状态数据
    await redis.sendCommand([
      'HMSET',
      dataItem.id,
      'vector',
      vectorToBuffer(vector),
      'status',
      ModelDataStatusEnum.ready
    ]);

    console.log(`生成向量成功: ${dataItem.id}`);

    generateVector(true);
  } catch (error: any) {
    // log
    if (error?.response) {
      console.log('openai error: 生成向量错误');
      console.log(error.response?.status, error.response?.statusText, error.response?.data);
    } else {
      console.log('生成向量错误:', error);
    }

    // 没有余额或者凭证错误时，拒绝任务
    if (
      dataId &&
      (+error.response?.status === 401 ||
        error?.response?.data?.error?.type === 'insufficient_quota')
    ) {
      console.log('删除向量生成任务记录');
      const redis = await connectRedis();
      redis.del(dataId);
      generateVector(true);
      return;
    }
    if (error?.response?.statusText === 'Too Many Requests') {
      console.log('生成向量次数限制，1分钟后尝试');
      // 限制次数，1分钟后再试
      setTimeout(() => {
        generateVector(true);
      }, 60000);
      return;
    }
    setTimeout(() => {
      generateVector(true);
    }, 2000);
  }
}