import { Api, Get, Query, useContext, useInject } from "@midwayjs/hooks";
import { RedisService } from "@midwayjs/redis";
import { prisma } from "../utils/prisma";

import { getSong } from "../utils/netease";

export default Api(
  Get(),
  Query<{ play?: string }>(),
  async () => {
    const ctx = useContext();
    const client = await useInject(RedisService);

    // 设置 Header
    ctx.set("access-control-allow-origin", "*");
    ctx.set("access-control-allow-headers", "x-requested-with");

    // 增加使用数量
    await client.incr("api-next:stat:acgm");

    const dbCount = await prisma.aCGM.count();
    const skip = Math.floor(Math.random() * dbCount);

    const item = await prisma.aCGM.findMany({
      take: 1,
      skip
    });

    const id = item ?. [0] ?. music_id;

    if (!id) {
      return {
        code: 0,
        msg: "Failed, no data found"
      }
    }

    // 直接播放
    if ("play" in ctx.query) {
      ctx.status = 302;
      ctx.set("location", `https://music.163.com/song/media/outer/url?id=${id}`);

      return "";
    }

    // 尝试使用缓存
    const cached = await client.lrange(`api-next:163:${id}`, 0, 7);

    if (cached.length) {
      return {
        code: 1,
        msg: "Success",
        data: {
          id: Number(id),
          title: cached[0],
          artist: cached[1],
          album: cached[2],
          alias: cached[3],
          cover: cached[4],
          lyric: cached[5],
          sub_lyric: cached[6],
          link: cached[7],
          served: Boolean(cached[8]),
          cached: true
        }
      };
    }

    // 全新获取
    const song = await getSong(id);

    if (song) {
      await client.rpush(`api-next:163:${id}`,
        song.title,
        song.artist,
        song.album,
        song.alias,
        song.cover,
        song.lyric,
        song.sub_lyric,
        song.link,
        song.served,
        err => {
          err && console.log(err);
        }
      );
      await client.expire(`api-next:163:${id}`, 21600);

      return {
        code: 1,
        msg: "Success",
        data: {
          ...song,
          cached: false
        }
      };
    }

    return {
      code: 1,
      msg: "Failed",
      data: undefined
    };
  }
);