import { Injectable } from '@angular/core';
import {Network} from '@ionic-native/network/ngx';
import {AlertController} from '@ionic/angular';

@Injectable()
export class NetworkService {

    networkRemind = true;
    constructor(private alertCtrl: AlertController,
                private network: Network) {}

    async checkNetworkType() {
        // 检测网络连接，如果是移动数据网络，则提醒用户
        if (this.networkRemind && (this.network.type === '3g' || this.network.type === '4g')) {
            const confirm = await this.alertCtrl.create({
                header: '检测到网络连接变化！',
                message: '您现在使用的是' + this.network.type + ',继续使用将会产生流量费用，是否继续？',
                buttons: [
                    {
                        text: '否',
                        handler: () => {
                            this.networkRemind = true;
                        }
                    },
                    {
                        text: '是,将不再提醒网络变化',
                        handler: () => {
                            this.networkRemind = false;
                        }
                    }
                ]
            });
            await confirm.present();
        }
        this.network.onConnect().subscribe(() => {
            setTimeout(async () => {
                if (this.networkRemind && (this.network.type === '3g' || this.network.type === '4g')) {
                    const confirm = await this.alertCtrl.create({
                        header: '检测到网络连接变化！',
                        message: '您现在使用的是' + this.network.type + ',继续使用将会产生流量费用，是否继续？',
                        buttons: [
                            {
                                text: '否',
                                handler: () => {
                                    this.networkRemind = true;
                                }
                            },
                            {
                                text: '是,将不再提醒网络变化',
                                handler: () => {
                                    this.networkRemind = false;
                                }
                            }
                        ]
                    });
                    await confirm.present();
                }
            }, 3000);
        });
    }

}