ตอนที่ 14 : Show Case 2 : Login User Password (iOS / iPhone and Mobile Services)

//
//  ViewController.h
//  myAppMobileService
//
//  Created by Weerachai on 5/12/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>
 
@interface ViewController : UIViewController
{
    IBOutlet UITextField *txtUsername;
    IBOutlet UITextField *txtPassword;
} 

- (IBAction)btnLogin:(id)sender;


@end

//
//  ViewController.m
//  myAppMobileService
//
//  Created by Weerachai on 5/12/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import <WindowsAzureMobileServices/WindowsAzureMobileServices.h>
#import "MyMemberService.h"

#import "ViewController.h"
#import "LoginInfoViewController.h"
  
@interface ViewController ()

// Private properties
@property (strong, nonatomic)   MyMemberService   *memberService;

@end
 

@implementation ViewController

@synthesize memberService;


- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // Start Service
    self.memberService = [MyMemberService defaultService];
    
    // Tap Gesture for Hide Keyboard
    UITapGestureRecognizer *oneTapGesture = [[UITapGestureRecognizer alloc]
                                             initWithTarget: self
                                             action: @selector(hideKeyboard:)];
    [oneTapGesture setNumberOfTouchesRequired:1];
    [[self view] addGestureRecognizer:oneTapGesture];
    
}

// Event Gesture for Hide Keyboard
- (void)hideKeyboard:(UITapGestureRecognizer *)sender {
    [txtPassword resignFirstResponder];
    [txtPassword resignFirstResponder];
}


- (IBAction)btnLogin:(id)sender {
    
    NSDictionary *chk = @{ @"user":txtUsername.text, @"pass":txtPassword.text };
    [self.memberService checkLogin:chk completion:^
     {
         if(memberService.items.count ==0)
         {
             UIAlertView *av =
             [[UIAlertView alloc]
              initWithTitle:@"Login Status"
              message:@"Login Failed."
              delegate:nil
              cancelButtonTitle:@"OK"
              otherButtonTitles:nil
              ];
             [av show];
         }
         else
         {
             /*
             UIAlertView *av =
             [[UIAlertView alloc]
              initWithTitle:@"Login Status"
              message:@"Login OK."
              delegate:nil
              cancelButtonTitle:@"OK"
              otherButtonTitles:nil
              ];
             [av show];
              */
             
             LoginInfoViewController *viewInfo = [[[LoginInfoViewController alloc] initWithNibName:nil bundle:nil] autorelease];
             NSDictionary *item = [self.memberService.items objectAtIndex:0];
             viewInfo.sid = [item objectForKey:@"id"];
             [self presentViewController:viewInfo animated:NO completion:NULL];
         }
     }];
    


}

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

- (void)dealloc {
    [txtUsername release];
    [txtPassword release];

    [super dealloc];
}


@end

//
//  LoginInfoViewController.h
//  myAppMobileService
//
//  Created by Weerachai on 7/21/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface LoginInfoViewController : UIViewController
{
    IBOutlet UILabel *lblUsername;
    IBOutlet UILabel *lblPassword;
    IBOutlet UILabel *lblName;
    IBOutlet UILabel *lblEmail;
    IBOutlet UILabel *lblTel;
}

@property (strong, nonatomic) id sid;

@end

//
//  LoginInfoViewController.m
//  myAppMobileService
//
//  Created by Weerachai on 7/21/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import <WindowsAzureMobileServices/WindowsAzureMobileServices.h>
#import "MyMemberService.h"

#import "LoginInfoViewController.h"


@interface LoginInfoViewController ()

// Private properties
@property (strong, nonatomic)   MyMemberService   *memberService;

@end


@implementation LoginInfoViewController

@synthesize memberService;


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    
    // Start Service
    self.memberService = [MyMemberService defaultService];
    
    NSString *wid = [NSString stringWithFormat:@"id = %@",[self.sid description]];
    
    [self.memberService getUserInfo:wid completion:^
     {
         if(memberService.items.count > 0)
         {
             NSDictionary *item = [self.memberService.items objectAtIndex:0];
             lblUsername.text = [item objectForKey:@"username"];
             lblPassword.text = [item objectForKey:@"password"];
             lblName.text = [item objectForKey:@"name"];
             lblEmail.text = [item objectForKey:@"email"];
             lblTel.text = [item objectForKey:@"tel"];

         }
         else
         {
             UIAlertView *av =
             [[UIAlertView alloc]
              initWithTitle:@"Get Data"
              message:@"Not found data."
              delegate:nil
              cancelButtonTitle:@"OK"
              otherButtonTitles:nil
              ];
             [av show];
         }
     }];
    
}

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

- (void)dealloc {
    [lblUsername release];
    [lblPassword release];
    [lblName release];
    [lblTel release];
    [lblName release];
    [super dealloc];
}
@end

//
//  MyMemberService.h
//  myAppMobileService
//
//  Created by Weerachai on 7/21/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import <WindowsAzureMobileServices/WindowsAzureMobileServices.h>
#import <Foundation/Foundation.h>
 

typedef void (^QSCompletionBlock) ();
typedef void (^QSBusyUpdateBlock) (BOOL busy);
 

@interface MyMemberService : NSObject

@property (nonatomic, strong)   NSArray *items;
@property (nonatomic, strong)   MSClient *client;
@property (nonatomic, copy)     QSBusyUpdateBlock busyUpdate;


+ (MyMemberService *)defaultService;


- (void)checkLogin:(NSDictionary *)item
     completion:(QSCompletionBlock)completion;

- (void)getUserInfo:(NSString *)sid
        completion:(QSCompletionBlock)completion;

- (void)handleRequest:(NSURLRequest *)request
                 next:(MSFilterNextBlock)next
             response:(MSFilterResponseBlock)response;
@end

//
//  MyMemberService.m
//  myAppMobileService
//
//  Created by Weerachai on 7/21/56 BE.
//  Copyright (c) 2556 Weerachai. All rights reserved.
//

#import "MyMemberService.h"
#import <WindowsAzureMobileServices/WindowsAzureMobileServices.h>


@interface MyMemberService() <MSFilter>

@property (nonatomic, strong)   MSTable *table;
@property (nonatomic)           NSInteger busyCount;

@end

@implementation MyMemberService

@synthesize items;

 
+ (MyMemberService *)defaultService
{
    // Create a singleton instance of MyMemberService
    static MyMemberService* service;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        service = [[MyMemberService alloc] init];
    });
    
    return service;
}

-(MyMemberService *)init
{
    self = [super init];
    
    if (self)
    {
        // Initialize the Mobile Service client with your URL and key
        MSClient *client = [MSClient clientWithApplicationURLString:@"https://thaicreate.azure-mobile.net/"
        applicationKey:@"uJPAhkAkcTBuTyCNxaOSnDKFzkoYqB49"];
        
        // Add a Mobile Service filter to enable the busy indicator
        self.client = [client clientWithFilter:self];
        
        // Create an MSTable instance to allow us to work with the TodoItem table
        self.table = [_client tableWithName:@"MyMember"];
        
        self.items = [[NSMutableArray alloc] init];
        self.busyCount = 0;
    }
    
    return self;
}

-(void)checkLogin:(NSDictionary *)item completion:(QSCompletionBlock)completion
{
    // Create a predicate that finds items where username & password
    NSPredicate * predicate = [NSPredicate predicateWithFormat:@"Username == %@ and Password == %@",
                               [item objectForKey:@"user"],
                               [item objectForKey:@"pass"]];
    
    // Query the TodoItem table and update the items property with the results from the service
    [self.table readWithPredicate:predicate completion:^(NSArray *results, NSInteger totalCount, NSError *error)
     {
         [self logErrorIfNotNil:error];
         
         items = [results mutableCopy];
         
         // Let the caller know that we finished
         completion();
     }];
}

-(void)getUserInfo:(NSString *)sid completion:(QSCompletionBlock)completion
{
    // Create a predicate that finds items where username & password
    NSPredicate * predicate = [NSPredicate predicateWithFormat:sid];
    
    // Query the TodoItem table and update the items property with the results from the service
    [self.table readWithPredicate:predicate completion:^(NSArray *results, NSInteger totalCount, NSError *error)
     {
         [self logErrorIfNotNil:error];
         
         items = [results mutableCopy];
         
         // Let the caller know that we finished
         completion();
     }];
}

- (void)busy:(BOOL)busy
{
    // assumes always executes on UI thread
    if (busy)
    {
        if (self.busyCount == 0 && self.busyUpdate != nil)
        {
            self.busyUpdate(YES);
        }
        self.busyCount ++;
    }
    else
    {
        if (self.busyCount == 1 && self.busyUpdate != nil)
        {
            self.busyUpdate(FALSE);
        }
        self.busyCount--;
    }
}

- (void)logErrorIfNotNil:(NSError *) error
{
    if (error)
    {
        NSLog(@"ERROR %@", error);
    }
}


- (void)handleRequest:(NSURLRequest *)request
                 next:(MSFilterNextBlock)next
             response:(MSFilterResponseBlock)response
{
    // A wrapped response block that decrements the busy counter
    MSFilterResponseBlock wrappedResponse = ^(NSHTTPURLResponse *innerResponse, NSData *data, NSError *error)
    {
        [self busy:NO];
        response(innerResponse, data, error);
    };
    
    // Increment the busy counter before sending the request
    [self busy:YES];
    next(request, wrappedResponse);
}

@end