const BaseController = require('../core/base_controller.js');

const fileName = "teaching";

class TeachingController extends BaseController {
  // 获取最近发送的一条信息
  async getMsg() {
    const { ctx } = this;
    try {
      const redis = ctx.app.redis;
      const token = ctx.request.query.token;
      this.banManager(redis, token);
      const result = await ctx.service.teaching.getMsg(redis, token);
      if (result == "error") {
        this.setResponse(ctx, 500, '服务器错误', "none");
      } else if (result.code == 401) {
        this.setResponse(ctx, 't401', 'token 过期或错误', "none");
      } else if (result.code == 403) {
        this.setResponse(ctx, 403, '此 token 已进入黑名单，请等待解封后再使用', "none");
      } else if (result.code == 200) {
        delete result.code;
        const data = {
          userData: result.userData,
          responseTime: new Date()
        };
        this.setResponse(ctx, 200, '最近消息查询成功', "deconstruction", data);
      } else {
        this.setResponse(ctx, 404, '最近消息查询失败', "none");
      }
    } catch (error) {
      const blockName = fileName + "--" + "getMsg";
      ctx.app.middleware.log('../../controllerLog', blockName + ">>>>" + error);
      this.setResponse(ctx, 500, '服务器错误', "none");
    }
  }

  // 获取若干条历史消息
  async getHistory() {
    const { ctx } = this;
    try {
      const redis = ctx.app.redis;
      const { token, limit, offset } = ctx.request.query;
      this.banManager(redis, token);
      const result = await ctx.service.teaching.getHistory(redis, token, limit, offset);
      if (result == "error") {
        this.setResponse(ctx, 500, '服务器错误', "none");
      } else if (result.code == 401) {
        this.setResponse(ctx, 't401', 'token 过期或错误', "none");
      } else if (result.code == 403) {
        this.setResponse(ctx, 403, '此 token 已进入黑名单，请等待解封后再使用', "none");
      } else if (result.code == 200) {
        delete result.code;
        let historyMsg = [];
        result.userData.rows.forEach(element => {
          historyMsg.push(element.dataValues);
        });
        const data = {
          userData: historyMsg,
          total: result.userData.count
        };
        this.setResponse(ctx, 200, '历史消息查询成功', "deconstruction", data);
      } else {
        this.setResponse(ctx, 404, '历史消息查询失败', "none");
      }
    } catch (error) {
      const blockName = fileName + "--" + "getHistory";
      ctx.app.middleware.log('../../controllerLog', blockName + ">>>>" + error);
      this.setResponse(ctx, 500, '服务器错误', "none");
    }
  }
}

module.exports = TeachingController;