//
//  ViewController.m
//  weixinLoginDemo
//
//  Created by 張國榮 on 16/6/20.
//  Copyright © 2016年 BateOrganization. All rights reserved.
//

#import "ViewController.h"
#import "WXApi.h"
#import "AppDelegate.h"
//微信開發者ID
#define URL_APPID @"appid"
#define URL_SECRET @"app secret"
#import "AFNetworking.h"
@interface ViewController ()<WXDelegate>
{
    AppDelegate *appdelegate;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}
#pragma mark 微信登入
- (IBAction)weixinLoginAction:(id)sender {
    
    if ([WXApi isWXAppInstalled]) {
        SendAuthReq *req = [[SendAuthReq alloc]init];
        req.scope = @"snsapi_userinfo";
        req.openID = URL_APPID;
        req.state = @"1245";
        appdelegate = [UIApplication sharedApplication].delegate;
        appdelegate.wxDelegate = self;

        [WXApi sendReq:req];
    }else{
        //把微信登入的按鈕隱藏掉。
    }
}
#pragma mark 微信登入回撥。
-(void)loginSuccessByCode:(NSString *)code{
    NSLog(@"code %@",code);
    __weak typeof(*&self) weakSelf = self;
    
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.requestSerializer = [AFJSONRequestSerializer serializer];//請求
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];//響應
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"application/json", @"text/json",@"text/plain", nil];
    //通過 appid  secret 認證code . 來發送獲取 access_token的請求
    [manager GET:[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/oauth2/access_token?appid=%@&secret=%@&code=%@&grant_type=authorization_code",URL_APPID,URL_SECRET,code] parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
       
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {  //獲得access_token，然後根據access_token獲取使用者資訊請求。

        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];
        NSLog(@"dic %@",dic);
        
        /*
         access_token	介面呼叫憑證
         expires_in	access_token介面呼叫憑證超時時間，單位（秒）
         refresh_token	使用者重新整理access_token
         openid	授權使用者唯一標識
         scope	使用者授權的作用域，使用逗號（,）分隔
         unionid	 當且僅當該移動應用已獲得該使用者的userinfo授權時，才會出現該欄位
         */
        NSString* accessToken=[dic valueForKey:@"access_token"];
        NSString* openID=[dic valueForKey:@"openid"];
        [weakSelf requestUserInfoByToken:accessToken andOpenid:openID];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
     NSLog(@"error %@",error.localizedFailureReason);
    }];
    
}

-(void)requestUserInfoByToken:(NSString *)token andOpenid:(NSString *)openID{
    
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.requestSerializer = [AFJSONRequestSerializer serializer];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    [manager GET:[NSString stringWithFormat:@"https://api.weixin.qq.com/sns/userinfo?access_token=%@&openid=%@",token,openID] parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
        
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        NSDictionary *dic = (NSDictionary *)[NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];
        NSLog(@"dic  ==== %@",dic);
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"error %ld",(long)error.code);
    }];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end