#import <Foundation/Foundation.h>
#import "AFNetworking.h"

@class SLWebService;

@protocol SLWebServiceDelegate <NSObject>

@required
- (void)requestFinished:(NSString *)name withResult:(NSDictionary *)result andError:(NSError *)error;

@end

@interface SLWebService : NSObject
{
    NSURL *baseURL;
    AFHTTPClient *client;
}
@property id <SLWebServiceDelegate> delegate;

+ (id)sharedWebService;

- (void)login:(NSString *)email withPassword:(NSString *)password;

- (NSError *)generateError:(NSString *)description domain:(NSString *)domain;

@end

#import "SLWebService.h"

@implementation SLWebService

@synthesize delegate;

+ (id)sharedWebService
{
    static SLWebService *sharedWebService = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedWebService = [[self alloc] init];
    });
    return sharedWebService;
}

-(id)init
{
    self = [super init];

    if(self)
    {
        baseURL = [[NSURL alloc] initWithString:@"http://www.domain.de/"];
        client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
    }

    return self;
}

-(void)login:(NSString *)email withPassword:(NSString *)password
{
    NSDictionary *params = @{@"email":email, @"password":password};
    NSMutableURLRequest *request = [client requestWithMethod:@"GET" path:@"login.php" parameters:params];

    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request
    success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
    {
        NSString *result = [JSON objectForKey:@"result"];
        if ([result isEqualToString:@"fail"])
        {
            [[self delegate] requestFinished:@"login" withResult:nil andError:[self generateError:[JSON objectForKey:@"reason"] domain:@"de.Searchlight.WebServiceError"]];
        }
        else
        {
            NSDictionary *dic = @{@"firstname":[JSON objectForKey:@"firstname"], @"lastname":[JSON objectForKey:@"lastname"], @"gender":[JSON objectForKey:@"gender"]};
            [[self delegate] requestFinished:@"login" withResult:dic andError:[self generateError:[JSON objectForKey:@"reason"] domain:@"de.Searchlight.WebServiceError"]];
        }
    }
    failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *err, id JSON)
    {
        [[self delegate]requestFinished:@"login" withResult:nil andError:err];
    }];

    [operation start];
}

-(NSError *)generateError:(NSString *)description domain:(NSString *)domain
{
    NSError *error;
    NSDictionary *userInfo = @{NSLocalizedDescriptionKey : description};
    error = [NSError errorWithDomain:domain code:200 userInfo:userInfo];
    return error;
}
@end