import apiConfig from "./apiConfig";
import edu from "./edu";
import md5 from "./md5";
import Session from "./requests";
import { getResConstruction} from "./utils";

export default class Client{
  constructor({session} = {}) {
    this.session = session || new Session();
    this.user = {};
    this.synch = 0;
    this.load_cookies();
    this.load_user();
    this.randomcode=0;
    this.cb={
      before:{},
      success:{},
      fail:{}
    };
    this.initCallback();
  }
  on(cd,name,cb){
    this.cb[cd][name]=cb;
  }
  trigger(cd,name, data){
    if(typeof this.cb[cd][name]=="function")
      return this.cb[cd][name](data);
    else 
      return this.cb[cd][name];
  }
  initCallback(){
    var getSms=({login})=>({smscode:md5(login)});
    this.on("before", "accounts.get_verification_code", getSms);
    this.on("before", "weapps.verification_code",getSms);
    var getLogin = () => ({ login: this.user.login })
    this.on("before", "users.accounts", getLogin);
    this.on("before","users.courses", getLogin);
    this.on("before","users.homepage_info", getLogin);
    this.on("before","homepage_info", getLogin)
    this.on("before","unread_message_info", getLogin);
    this.on("before","accounts.avatar",getLogin);
    this.on("success", "accounts.logout", res=>{
      this.synch = 0;
      wx.setStorageSync("autologin", 0);
      this.user={};
      this.save_user();
    });
    this.on("success","users.get_user_info", res=>{
      this.user = res;
      this.synch = 1;
      this.save_user();
      this.save_cookies();
    });
    this.on("success","accounts.login", res=>{
      this.synch=0
      this.save_cookies();
    });
    this.on("success","first_stamp", res=>{
      this.randomcode=res.message;
      this.client_key = key(this.randomcode);
    })
  }
  async syncUser({ refresh = 0 } = {}) {
    let old_id = this.user.user_id;
    if(!this.synch||refresh){
      let info = await this.callApi({name:"users.get_user_info"});
      let autologin = wx.getStorageSync("autologin");
      let login = wx.getStorageSync("login");
      let password = wx.getStorageSync("_password");
      if(info.user_id==2&&autologin&&password&&login){
        await this.callApi({name:"accounts.login", data:{login, password}})
          .catch(e=>{wx.setStorage({
            key: 'autologin',
            data: 0,
          })});
        await this.callApi({ name: "users.get_user_info" });
      }
    }
    return {synch:this.synch,change:old_id!=this.user.user_id,user:this.user};
  }
  refresh_key(){
    let newCode = Date.parse(Date()) / 1e3;
    if(newCode-this.randomcode>10){
      //this.callApi({name:"main.first_stamp"});
      this.randomcode = newCode;
      this.client_key = md5(this.randomcode);
    }
    return {randomcode:this.randomcode,client_key:this.client_key};
  }
  api(name,config={}){
    return data=>{
      return this.callApi({name,config, data});
    }
  }
  callApi({ name, data={},config={}, success, fail, complete}) {
    let session = this.session;
    let _data = this.trigger("before",name,data)||{};
    data = {..._data, ...data};
    return edu({
      session,name, config, data: {...this.refresh_key(),...data}, 
      success:res=>{
        this.trigger("success",name,res);
        console.debug(`EduCoder api ${name} construction:`, getResConstruction(res));
        if(success)
          success(res)
      }, fail:e=>{
        this.trigger("fail",name,e);
        if(fail)
          fail(e);
      }, complete,
    });
  }
  load_user() {
    let value = wx.getStorageSync('user') || {};
    this.user = value;
  }
  save_user() {
    wx.setStorage({ key: "user", data: this.user });
  }
  load_cookies() {
    this.session.cookies = wx.getStorageSync("cookies");
  }
  save_cookies() {
    wx.setStorage({
      key: 'cookies',
      data: this.session.cookies,
    })
  }
}

const client = global.client = new Client();
client.syncUser();
module.exports = {client};