import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { MongoService } from 'wacom';
import { Router } from '@angular/router'
export interface User {
    email: string;
    name: string;
    _id: string;
    data: object;
}

@Injectable({
    providedIn: 'root'
})

export class UserService implements User {
    public users: User[];
    public name;
    public email;
    public avatarUrl;
    public _users: any = {};
    public _id;
    public is: any = {};
    public data: any = {
        resetPin: {},
        resetCreate: Date,
        resetCounter: Number,
        phone: Number,
        balance: {},
    };
    set_user(user){
        if(typeof user.data != 'object') user.data = {};
        if(typeof user.is != 'object') user.is = {};
        if(typeof user.data.balance != 'object') user.data.balance = {};
        if(typeof user.data.balance != 'object') user.data.balance = {};
        if(!Array.isArray(user.data.invites)) user.data.invites = []
        if(!Array.isArray(user.data.declinedInvites)) user.data.declinedInvites = []
        if(!Array.isArray(user.data.incomingInvites)) user.data.incomingInvites = []
        if(!Array.isArray(user.data.deleted)) user.data.deleted = []
        if(!Array.isArray(user.data.fr)) user.data.fr = []
        if(!Array.isArray(user.data.friends)) user.data.friends = []
        if(!Array.isArray(user.data.offlineFriends)) user.data.offlineFriends = []
        for (var key in user) {
            this[key] = user[key];
        }
    }
    constructor(private mongo: MongoService, private http: HttpClient, private router: Router) {
        if(localStorage.getItem('memo_user')){
            this.set_user(JSON.parse(localStorage.getItem('memo_user')));
        }
        this.http.get('/api/user/me').subscribe((resp:any) => {
            this.set_user(resp);
        });
        this.users = mongo.get('user', {
            replace: {
                avatarUrl: (val, cb)=>{
                    cb(val||'/assets/default.png');
                },
                data: (field, cb, doc) => {
                    if(typeof field != 'object') field = {};
                    if(typeof field.request!='object')  field.request = {};
                },
                is: (field, cb) => {
                    cb(field || {})
                }
            }
        }, (arr, obj) => {
            this._users = obj;
        });
    }
    update(){
        this.mongo.afterWhile(this, ()=>{
            this.mongo.update('user', this, {
                fields: 'name data avatarUrl'
            });
        });
    }
    change_password(oldPass, newPass){
        this.http.post('/api/user/changePassword', {
            newPass: newPass,
            oldPass: oldPass
        }).subscribe(resp => {
            if(resp) alert('successfully changed password');
            else alert('failed to change password');
        });
    }
    todataUrl(fl, cb) {
        var a = new FileReader();
        a.onload = (e)=>{
            var target: any = e.target;
            cb(target.result);
        }
        a.readAsDataURL(fl);
    }
    changeAvatar(e){
        this.todataUrl(e.target.files[0], (dataUrl)=>{
            this.http.post('/api/user/avatar', {
                dataUrl: dataUrl
            }).subscribe((resp:any)=> {
                this.avatarUrl = resp;
            });
        });
    }
    create(user) {
        this.mongo.create('user', user, created=>{});
    }
    logout(){
        localStorage.removeItem('memo_user')
        this.http.get('/api/user/logout').subscribe((resp:any)=> {});
        this.router.navigate(['/']);
    }
}