import { Api, Get, Query, useContext } from '@midwayjs/hooks';

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

import { client } from './utils/redis';

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

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

    const { id } = ctx.query;

    if (!id) {
      return {
        code: 0,
        msg: "Failed, no id 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:${id}`, [
        song.title,
        song.artist,
        song.album,
        song.alias,
        song.cover,
        song.lyric,
        song.sub_lyric,
        song.link,
        song.served
      ]);
      await client.expire(`api-next:163:${id}`, 21600);

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

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