jadechip/APIHandler.h

## APIHandler.h
//
//  APIHandler.h
//  Orakuru
//
//  Created by Mitrmitri on 11/19/2557 BE.
//  Copyright (c) 2557 Codemy. All rights reserved.
//

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

@class Listing;
@class Tag;
@class User;
@class Connection;
@class ContactPerson;
@class Address;

@interface APIHandler : NSObject

+ (AFHTTPRequestOperationManager *)configureHeaderForAuthenticatedRequestUser:(User *)user;

+ (void)updateListing:(Listing *)listing
               byUser:(User *)currentUser
              success:(void (^)())success
              failure:(void(^)(NSString *error))failure;


#pragma mark - Search Listings

+ (void)searchListingWithQuery:(NSString *)searchText
                      latitude:(double)lat
                     longitude:(double)lon
                   categoryIDs:(NSArray *)categoryIDs
                     regionIDs:(NSArray *)regionIDs
                        tagIDs:(NSArray *)tagIDs
                        paging:(NSInteger)pageNunber
                       success:(void(^)(NSArray *listings))success
                       failure:(void(^)(NSString *message))failure;

+ (void)searchListingWithQuery:(NSString *)searchText
                        paging:(NSInteger)pageNunber
                       success:(void(^)(NSArray *listings))success
                       failure:(void(^)(NSString *message))failure;

+ (void)loginInWithEmail:(NSString *)email
             AndPassword:(NSString *)password
                 AndUUID:(NSString *)UUID
                 success:(void(^)(User *user))success
                 failure:(void(^)(NSError *error))failure;


#pragma mark - Get Listing Detail

+ (void)getListingWithID:(NSInteger)ID
                 success:(void(^)(Listing *listing))success
                 failure:(void(^)(NSString *message))failure;


+ (void)searchRegionsWithParameters:(NSString *)keyword
                            success:(void(^)(NSArray *regions))success
                            failure:(void(^)(NSString *error))failure;


#pragma mark - Tags Keywords

+ (void)searchTagsWithKeyword:(NSString *)keyword
                      success:(void(^)(NSArray *keywords))success
                      failure:(void(^)(NSString *error))failure;

+ (void)createTag:(Tag *)tag
             user:(User *)currentUser
          success:(void(^)(Tag *tag))success
          failure:(void(^)(NSString *error))failure;


#pragma mark - connections

+ (void)createConnection:(Connection *)connection
                           success:(void(^)(NSNumber *Id))success
                           failure:(void(^)(NSError *error))failure;
+ (void)deleteConnectionId:(NSNumber *)Id
                   success:(void(^)())success
                   failure:(void(^)(NSError *error))failure;


#pragma mark - addresses

+ (void)createAddress:(Address *)address
              success:(void(^)(NSNumber *Id))success
              failure:(void(^)(NSError *))failure;
+ (void)deleteAddressId:(NSNumber *)Id
                success:(void(^)())success
                failure:(void(^)(NSError *))failure;


#pragma mark - photos

+ (void)createPhoto:(NSURL *)photoURL
         forListing:(Listing *)listing
            success:(void(^)(NSNumber *photoID))success
            failure:(void(^)(NSError *error))failure;

+ (void)getUniquePhotoKeySuccess:(void(^)(NSString *key))success
                         failure:(void(^)(NSError *error))failure;

+ (void)deletePhoto:(NSNumber *)photoID
            success:(void(^)())success
            failure:(void(^)(NSError *error))failure;

+ (void)searchListingsWithUser:(User *)currentUser
                    success:(void (^)(NSArray *listings))success
                    failure:(void (^)(NSString *error))failure;


#pragma mark - contact people

+ (void)createContactPerson:(ContactPerson *)contactPerson
                    success:(void(^)(NSNumber *Id))success
                    failure:(void(^)(NSError *))failure;

+ (void)deleteContactPsersonId:(NSNumber *)Id
                       success:(void(^)())success
                       failure:(void(^)(NSError *))failure;

@end

## APIHandler.m
//
//  APIHandler.m
//  Orakuru
//
//  Created by Mitrmitri on 11/19/2557 BE.
//  Copyright (c) 2557 Codemy. All rights reserved.
//

#import "APIHandler.h"
#import "Listing.h"
#import "Region.h"
#import "User.h"
#import "Tag.h"
#import "Address.h"
#import "TokenStorage.h"
#import "User.h"
#import "ContactPerson.h"
#import "Connection.h"

#import <CoreLocation/CoreLocation.h>
#import <Mantle/MTLJSONAdapter.h>

@interface AFHTTPRequestOperationManager(Auth)
+ (instancetype)authManager:(User *)user;
@end
@implementation AFHTTPRequestOperationManager (Auth)

+ (instancetype)authManager:(User *)user {
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager.requestSerializer setValue:[user.userID stringValue]
                     forHTTPHeaderField:@"X-User-Id"];
    [manager.requestSerializer setValue:user.UUID
                     forHTTPHeaderField:@"X-Device-Uid"];
    [manager.requestSerializer setValue:user.authToken
                     forHTTPHeaderField:@"X-Auth-Token"];

    return manager;
}
@end

@implementation APIHandler

+ (void)searchListingWithQuery:(NSString *)searchText
                        paging:(NSInteger)pageNunber
                       success:(void(^)(NSArray *listings))success
                       failure:(void(^)(NSString *message))failure
{
    // In the case of an empty search query
    if ([searchText isEqualToString:@""]) {
        searchText = @"Sushi";
    }

    NSDictionary * parameters = @{@"q"    : searchText,
                                  @"page" : @(pageNunber)};

    [self searchListingWithParams:parameters
                          success:success
                          failure:failure];
}

+ (void)searchListingWithQuery:(NSString *)searchText
                      latitude:(double)lat
                     longitude:(double)lon
                   categoryIDs:(NSArray *)categoryIDs
                     regionIDs:(NSArray *)regionIDs
                        tagIDs:(NSArray *)tagIDs
                        paging:(NSInteger)pageNunber
                       success:(void(^)(NSArray *listings))success
                       failure:(void(^)(NSString *message))failure
{
    // In the case of an empty search query
    if (!searchText || [searchText isEqualToString:@""]) {
        @throw [NSException exceptionWithName:NSInvalidArgumentException
                                       reason:@"SearchText must not be nil or empty string"
                                     userInfo:nil];
    }

    NSMutableDictionary * parameters = [@{@"q"    : searchText,
                                          @"lat"  : @(lat),
                                          @"lon"  : @(lon),
                                          @"page" : @(pageNunber)} mutableCopy];

    if (regionIDs.count > 0) parameters[@"r"] = regionIDs;
    if (categoryIDs.count > 0) parameters[@"c"] = categoryIDs;
    if (tagIDs.count > 0 ) parameters[@"k"] = tagIDs;

    [self searchListingWithParams:parameters
                          success:success
                          failure:failure];
}

+ (void)searchListingWithParams:(NSDictionary *)params
                        success:(void(^)(NSArray *listings))success
                        failure:(void(^)(NSString *message))failure {
    // Query encoding

    NSString * url = [BASE_URL stringByAppendingPathComponent:@"v1/search"];

    [[AFHTTPRequestOperationManager manager] GET:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSArray * listings = [MTLJSONAdapter modelsOfClass:[Listing class]
                                             fromJSONArray:responseObject[@"listings"]
                                                     error:nil];
        success(listings);

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"%@",error);
    }];
}

+ (void)getListingWithID:(NSInteger)ID
                 success:(void (^)(Listing *))success
                 failure:(void (^)(NSString *))failure {
    NSString *resourcePath = [NSString stringWithFormat:@"v1/listings/%ld", (long)ID];
    NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];

    [[AFHTTPRequestOperationManager manager] GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

        Listing *listing = [MTLJSONAdapter modelOfClass:[Listing class]
                                     fromJSONDictionary:responseObject
                                                  error:nil];
        listing.fetched = YES;
        success(listing);

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        failure(error.description);

    }];
}

#pragma mark - My Listings

+ (void)searchListingsWithUser:(User *)currentUser
                       success:(void (^)(NSArray *listings))success
                       failure:(void (^)(NSString *error))failure {
    NSString *url = [NSString stringWithFormat:@"%@/v1/listings",BASE_URL];

    AFHTTPRequestOperationManager *manager = [self configureHeaderForAuthenticatedRequestUser:currentUser];

    [manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSArray *listings = [MTLJSONAdapter modelsOfClass:[Listing class] fromJSONArray:responseObject error:nil];
        success(listings);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure([error description]);
    }];
}


#pragma mark - Region Handler

+ (void)searchRegionsWithParameters:(NSString *)keyword
                            success:(void(^)(NSArray *regions))success
                            failure:(void(^)(NSString *error))failure {

    // TODO: Change BASE_URL to comply with updated conventions
    NSString *url =  [BASE_URL stringByAppendingPathComponent:@"v1/regions"];
    NSDictionary *parameters = @{@"q":keyword};

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    [manager GET:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSArray * regions = [MTLJSONAdapter modelsOfClass:[Region class] fromJSONArray:responseObject error:nil];
        success(regions);

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"%@", error);

    }];

}

#pragma mark - Tag API

+ (void)searchTagsWithKeyword:(NSString *)keyword
                      success:(void (^)(NSArray *))success
                      failure:(void (^)(NSString *))failure {

    // TO DO: Change BASE_URL to comply with updated conventions
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/tags"];
    NSDictionary *parameters = @{@"name":keyword};

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    [manager GET:url
      parameters:parameters
         success:^(AFHTTPRequestOperation *operation, id responseObject)
     {
        NSArray * tags = [MTLJSONAdapter modelsOfClass:[Tag class]
                                         fromJSONArray:responseObject
                                                 error:nil];
        success(tags);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure([error description]);
    }];
}

+ (void)createTag:(Tag *)tag
             user:(User *)currentUser
          success:(void (^)(Tag *))success
          failure:(void (^)(NSString *))failure {
    // TO DO: Change BASE_URL to comply with updated conventions
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/tags"];
    NSDictionary *parameters = [MTLJSONAdapter JSONDictionaryFromModel:tag];

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];


    [manager POST:url
       parameters:parameters
          success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        Tag *response = [MTLJSONAdapter modelOfClass:[Tag class]
                                  fromJSONDictionary:responseObject
                                               error:nil];
        tag.ID = response.ID;
        success(tag);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure([error description]);
    }];
}

+ (id)JSONWithFile:(NSString *)fileName {
    NSString *filePath = [[NSBundle mainBundle] pathForResource:fileName
                                                         ofType:@"json"];
    NSData *JSONData = [NSData dataWithContentsOfFile:filePath];

    return [NSJSONSerialization JSONObjectWithData:JSONData
                                           options:kNilOptions
                                             error:nil];
}

#pragma mark - connections
+ (void)createConnection:(Connection *)connection
                           success:(void(^)(NSNumber *Id))success
                           failure:(void(^)(NSError *error))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/connections"];
    NSDictionary *connectionDict = [MTLJSONAdapter JSONDictionaryFromModel:connection];
    NSDictionary *params = @{@"connection": connectionDict};

    [manager POST:url
       parameters:params
          success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        success(responseObject[@"id"]);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

+ (void)deleteConnectionId:(NSNumber *)Id
                   success:(void(^)())success
                   failure:(void(^)(NSError *error))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *resourcePath = [NSString stringWithFormat:@"v1/connections/%@", [Id stringValue]];
    NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];

    [manager DELETE:url
         parameters:nil
            success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        success();
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}


#pragma mark - User Handler

+ (void)loginInWithEmail:(NSString *)email
             AndPassword:(NSString *)password
                 AndUUID:(NSString *)UUID
                 success:(void(^)(User *user))success
                 failure:(void(^)(NSError *error))failure {

    NSDictionary *userDict = @{@"email":email, @"password":password};
    NSDictionary *deviceDict = @{@"uid":UUID};
    NSDictionary *params = @{@"user":userDict, @"device":deviceDict};

    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/sessions"];
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager POST:url
       parameters:params
          success:^(AFHTTPRequestOperation *operation, id responseObject) {
              NSString *userID = [responseObject objectForKey:@"user_id"];
              NSNumber *userIDNumber = @([userID intValue]);
              // User becomes initialized
              User *user = [[User alloc] initWithEmail:email
                                           AndPassword:password
                                               AndUUID:UUID
                                             AndUserID:userIDNumber
                                          AndAuthToken:[responseObject objectForKey:@"authentication_token"]];
              // Return User
              success(user);
          } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
              failure(error);
          }];

}

+ (AFHTTPRequestOperationManager *)configureHeaderForAuthenticatedRequestUser:(User *)currentUser {
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager.requestSerializer setValue:[currentUser.userID stringValue]
                     forHTTPHeaderField:@"X-User-Id"];
    [manager.requestSerializer setValue:currentUser.UUID
                     forHTTPHeaderField:@"X-Device-Uid"];
    [manager.requestSerializer setValue:currentUser.authToken
                     forHTTPHeaderField:@"X-Auth-Token"];

    return manager;
}

#pragma mark - update Listing

+ (void)updateListing:(Listing *)listing
               byUser:(User *)currentUser
              success:(void (^)())success
              failure:(void(^)(NSString *error))failure {

    NSString *url = [NSString stringWithFormat:@"%@/v1/listings/%@",BASE_URL,listing.ID];

    NSDictionary *parameters = @{ @"listing" :
                                      @{
                                          @"name"               : [self checkStringIsNull:listing.name],
                                          @"market_name"        : [self checkStringIsNull:listing.marketName],
                                          @"short_description"  : [self checkStringIsNull:listing.shortDescription],
                                          @"long_description"   : [self checkStringIsNull:listing.longDescription],
                                          @"tag_tokens"         : [listing tagAsCSV],
                                          @"main_email"         : [self checkStringIsNull:listing.mainEmail],
                                          @"main_phone"         : [self checkStringIsNull:listing.mainPhone],
                                          @"main_fax"           : [self checkStringIsNull:listing.mainFax],
                                          @"facebook"           : [self checkStringIsNull:listing.facebook],
                                          @"twitter"            : [self checkStringIsNull:listing.twitter],
                                          @"instagram"          : [self checkStringIsNull:listing.instagram],
                                          @"google_plus"        : [self checkStringIsNull:listing.googlePlus],
                                          @"latitude"           : [NSNumber numberWithDouble:listing.coordinates.latitude],
                                          @"longitude"          : [NSNumber numberWithDouble:listing.coordinates.longitude],
                                          @"connection_ids"     : [listing allConnectionIds],
                                          @"person_ids"         : [listing personIds],
                                          @"address_ids"        : [listing allAddressIds]
                                          }
                                  };

    AFHTTPRequestOperationManager *manager = [self configureHeaderForAuthenticatedRequestUser:currentUser];
    [manager PUT:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
        success();
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error.description);
    }];

}

+ (NSString *)checkStringIsNull:(NSString *)value {
    if (!value) {
        return (NSString *)[NSNull null];
    }
    return value;
}

#pragma mark - addresses

+ (void)createAddress:(Address *)address
              success:(void (^)(NSNumber *))success
              failure:(void (^)(NSError *))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/addresses"];
    NSDictionary *params = @{@"address": [MTLJSONAdapter JSONDictionaryFromModel:address]};
    [manager POST:url
       parameters:params
          success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        success(responseObject[@"id"]);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

+ (void)deleteAddressId:(NSNumber *)Id
                success:(void (^)())success
                failure:(void (^)(NSError *))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *resourcePath = [NSString stringWithFormat:@"v1/addresses/%@", [Id stringValue]];
    NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];
    [manager DELETE:url
         parameters:nil
            success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        success();
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}


#pragma mark - photos

+ (void)createPhoto:(NSURL *)photoURL
         forListing:(Listing *)listing
            success:(void(^)(NSNumber *photoID))success
            failure:(void(^)(NSError *error))failure {

    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSInteger uploadsIndex = [[photoURL absoluteString] rangeOfString:@"uploads/"].location;
    NSString *photoKey = [[photoURL absoluteString] substringFromIndex:uploadsIndex];
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"photo"] = @{@"key":photoKey};
    params[@"listing_id"] = [listing.ID stringValue];

    [manager POST:[BASE_URL stringByAppendingPathComponent:@"v1/photos"]
       parameters:params
          success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        NSNumber *photoID = responseObject[@"id"];
        success(photoID);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

+ (void)getUniquePhotoKeySuccess:(void (^)(NSString *))success
                         failure:(void (^)(NSError *))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    [manager GET:[BASE_URL stringByAppendingPathComponent:@"v1/photos/new"]
      parameters:nil
         success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        NSString *key = responseObject[@"key"];
        if (key.length > 0) {
            success(key);
        } else {
            failure([NSError errorWithDomain:@"API"
                                        code:0
                                    userInfo:@{NSLocalizedDescriptionKey: @"Cannot request key for photo creation"}]);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

+ (void)deletePhoto:(NSNumber *)photoID
            success:(void(^)())success
            failure:(void(^)(NSError *error))failure {
    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];

    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/photos"];
    url = [url stringByAppendingPathComponent:[photoID stringValue]];
    [manager DELETE:url
         parameters:nil
            success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        success();
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}


#pragma mark - contact people

+ (void)createContactPerson:(ContactPerson *)contactPerson
                    success:(void(^)(NSNumber *Id))success
                    failure:(void(^)(NSError *))failure {

    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/people"];
    NSDictionary *params = @{@"person":[MTLJSONAdapter JSONDictionaryFromModel:contactPerson]};
    [manager POST:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
        success(responseObject[@"id"]);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

+ (void)deleteContactPsersonId:(NSNumber *)Id
                       success:(void(^)())success
                       failure:(void(^)(NSError *))failure {

    User *user = [User currentUser];

    if (!user || !user.isLogin) {
        NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
        failure([NSError errorWithDomain:@"Authentication"
                                    code:0
                                userInfo:@{NSLocalizedDescriptionKey:msg}]);
        return;
    }

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
    NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/people"];
    url = [url stringByAppendingPathComponent:[Id stringValue]];
    [manager DELETE:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        success();
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        failure(error);
    }];
}

@end

## TokenStorage.h
//
//  TokenStorage.h
//  Orakuru
//
//  Created by Developer on 12/03/2015.
//  Copyright (c) 2015 Codemy. All rights reserved.
//

// Saving the Token in the device (keychain)

#import <Foundation/Foundation.h>
#import <SSKeychain.h>
#import "User.h"

// Service Name
static NSString * const kServiceName = @"Orakuru";
// Keys
static NSString * const kAuthToken = @"authentication_token";
static NSString * const kEmail = @"email";
static NSString * const kUserID = @"userID";
static NSString * const kUUID = @"UUID";
static NSString * const kIsLogin = @"isLogin";

@interface TokenStorage : NSObject

- (void)clearSavedCredentialsOfUser:(User *)credentials;
- (NSString *)getSecureStringValueForKey:(id)key;
- (void)saveUserCredentials:(User *)credentials;

@end

## TokenStorage.m
//
//  TokenStorage.m
//  Orakuru
//
//  Created by Developer on 12/03/2015.
//  Copyright (c) 2015 Codemy. All rights reserved.
//

#import "TokenStorage.h"

#define SERVICE_NAME @"Orakuru"
#define AUTH_TOKEN_KEY @"authentication_token"


@implementation TokenStorage

- (NSDictionary *)createDictionaryFromUserCredentials:(User *)credentials {

    NSString *userIDString = [credentials.userID stringValue];
    NSString *userIsLoginString = credentials.isLogin ? @"YES" : @"NO";

    return @{
             kEmail:credentials.email,
             kUserID:userIDString,
             kUUID:credentials.UUID,
             kAuthToken:credentials.authToken,
             kIsLogin:userIsLoginString
             };
}

- (void)saveUserCredentials:(User *)credentials {
    NSDictionary *container = [self createDictionaryFromUserCredentials:credentials];
    for(id key in container.allKeys) {
        id value = [container objectForKey:key];
        [SSKeychain setPassword:value
                     forService:SERVICE_NAME
                        account:key];
    }
}

#pragma mark - Get secure value

- (NSString *)getSecureStringValueForKey:(NSString *)key {
    return [SSKeychain passwordForService:SERVICE_NAME account:key];
}

#pragma mark - Clear credentials

- (void)clearSavedCredentialsOfUser:(User *)credentials {

    NSDictionary *container = [self createDictionaryFromUserCredentials:credentials];

    for (id key in container.allKeys) {
        [SSKeychain deletePasswordForService:SERVICE_NAME account:key];
    }
}

@end

## User.h
//
//  User.h
//  Orakuru
//
//  Created by offz on 2/25/2558 BE.
//  Copyright (c) 2558 Codemy. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface User : NSObject

@property (assign, nonatomic, readonly) BOOL isLogin;
@property (strong, nonatomic) NSString *UUID;
@property (strong, nonatomic) NSNumber *userID;
@property (strong, nonatomic) NSString *email;
@property (strong, nonatomic) NSString *password;
@property (strong, nonatomic) NSString *authToken;

+ (instancetype)currentUser;

- (instancetype)initWithEmail:(NSString *)email
                  AndPassword:(NSString *)password
                      AndUUID:(NSString *)UUID
                    AndUserID:(NSNumber *)userID
                 AndAuthToken:(NSString *)authToken;

- (void)logOut:(User *)currentUser;
- (void)assignValueToCurrentUser;

@end

## User.m
//
//  User.m
//  Orakuru
//
//  Created by offz on 2/25/2558 BE.
//  Copyright (c) 2558 Codemy. All rights reserved.
//

#import "User.h"
#import <AFNetworking/AFNetworking.h>
#import "TokenStorage.h"

@interface User()
@property (strong, nonatomic) TokenStorage *store;
// Not writeable from public API
@property (assign, nonatomic, readwrite) BOOL isLogin;
@end

@implementation User

// Designated initializer
- (instancetype)initWithEmail:(NSString *)email
                  AndPassword:(NSString *)password
                      AndUUID:(NSString *)UUID
                    AndUserID:(NSNumber *)userID
                 AndAuthToken:(NSString *)authToken {

    self = [super init];

    if (self) {

        _email = email;
        _password = password;
        _UUID = UUID;
        _userID = userID;
        _authToken = authToken;

        if (!_store) {
            _store = [[TokenStorage alloc] init];
        }

        [_store saveUserCredentials:self];
        [self assignValueToCurrentUser];

    }
    return self;
}

- (void)logOut:(User *)currentUser {
    [self.store clearSavedCredentialsOfUser:currentUser];
    [self resetCurrentUser];
}

+ (instancetype)currentUser {
    static User *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [User new];
        instance.isLogin = NO;
    });
    return instance;
}

- (void)assignValueToCurrentUser {
    [User currentUser].isLogin = [self.store getSecureStringValueForKey:kIsLogin];
    if ([User currentUser].isLogin) {
        [User currentUser].email = [self.store getSecureStringValueForKey:kEmail];
        [User currentUser].UUID = [self.store getSecureStringValueForKey:kUUID];
        [User currentUser].userID = @([[self.store getSecureStringValueForKey:kUserID] intValue]);
        [User currentUser].authToken = [self.store getSecureStringValueForKey:kAuthToken];
    }
}

- (void)resetCurrentUser {
    [User currentUser].isLogin = NO;
    [User currentUser].email = nil;
    [User currentUser].UUID = nil;
    [User currentUser].userID = nil;
    [User currentUser].authToken = nil;
}

-(TokenStorage *)store {
    if (!_store) {
        _store = [[TokenStorage alloc] init];
    }
    return _store;
}

- (NSString *)email {
    if (self.isLogin) {
        _email = [self.store getSecureStringValueForKey:kEmail];
    }
    return _email;
}


- (NSNumber *)userID {
    if (self.isLogin) {
        NSNumber *userID = @([[self.store getSecureStringValueForKey:kUserID] intValue]);
        _userID = userID;
    }
    return _userID;
}


- (NSString *)UUID {
    if (self.isLogin) {
        _UUID = [self.store getSecureStringValueForKey:kUUID];
    }
    return _UUID;
}

- (NSString *)authToken {
    if (self.isLogin) {
        _authToken = [self.store getSecureStringValueForKey:kAuthToken];
    }
    return _authToken;
}

@end
	//
	// APIHandler.h
	// Orakuru
	//
	// Created by Mitrmitri on 11/19/2557 BE.
	// Copyright (c) 2557 Codemy. All rights reserved.
	//

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

	@class Listing;
	@class Tag;
	@class User;
	@class Connection;
	@class ContactPerson;
	@class Address;

	@interface APIHandler : NSObject

	+ (AFHTTPRequestOperationManager )configureHeaderForAuthenticatedRequestUser:(User )user;

	+ (void)updateListing:(Listing *)listing
	byUser:(User *)currentUser
	success:(void (^)())success
	failure:(void(^)(NSString *error))failure;



	#pragma mark - Search Listings

	+ (void)searchListingWithQuery:(NSString *)searchText
	latitude:(double)lat
	longitude:(double)lon
	categoryIDs:(NSArray *)categoryIDs
	regionIDs:(NSArray *)regionIDs
	tagIDs:(NSArray *)tagIDs
	paging:(NSInteger)pageNunber
	success:(void(^)(NSArray *listings))success
	failure:(void(^)(NSString *message))failure;

	+ (void)searchListingWithQuery:(NSString *)searchText
	paging:(NSInteger)pageNunber
	success:(void(^)(NSArray *listings))success
	failure:(void(^)(NSString *message))failure;

	+ (void)loginInWithEmail:(NSString *)email
	AndPassword:(NSString *)password
	AndUUID:(NSString *)UUID
	success:(void(^)(User *user))success
	failure:(void(^)(NSError *error))failure;



	#pragma mark - Get Listing Detail

	+ (void)getListingWithID:(NSInteger)ID
	success:(void(^)(Listing *listing))success
	failure:(void(^)(NSString *message))failure;


	+ (void)searchRegionsWithParameters:(NSString *)keyword
	success:(void(^)(NSArray *regions))success
	failure:(void(^)(NSString *error))failure;



	#pragma mark - Tags Keywords

	+ (void)searchTagsWithKeyword:(NSString *)keyword
	success:(void(^)(NSArray *keywords))success
	failure:(void(^)(NSString *error))failure;

	+ (void)createTag:(Tag *)tag
	user:(User *)currentUser
	success:(void(^)(Tag *tag))success
	failure:(void(^)(NSString *error))failure;



	#pragma mark - connections

	+ (void)createConnection:(Connection *)connection
	success:(void(^)(NSNumber *Id))success
	failure:(void(^)(NSError *error))failure;
	+ (void)deleteConnectionId:(NSNumber *)Id
	success:(void(^)())success
	failure:(void(^)(NSError *error))failure;



	#pragma mark - addresses

	+ (void)createAddress:(Address *)address
	success:(void(^)(NSNumber *Id))success
	failure:(void(^)(NSError *))failure;
	+ (void)deleteAddressId:(NSNumber *)Id
	success:(void(^)())success
	failure:(void(^)(NSError *))failure;



	#pragma mark - photos

	+ (void)createPhoto:(NSURL *)photoURL
	forListing:(Listing *)listing
	success:(void(^)(NSNumber *photoID))success
	failure:(void(^)(NSError *error))failure;

	+ (void)getUniquePhotoKeySuccess:(void(^)(NSString *key))success
	failure:(void(^)(NSError *error))failure;

	+ (void)deletePhoto:(NSNumber *)photoID
	success:(void(^)())success
	failure:(void(^)(NSError *error))failure;

	+ (void)searchListingsWithUser:(User *)currentUser
	success:(void (^)(NSArray *listings))success
	failure:(void (^)(NSString *error))failure;



	#pragma mark - contact people

	+ (void)createContactPerson:(ContactPerson *)contactPerson
	success:(void(^)(NSNumber *Id))success
	failure:(void(^)(NSError *))failure;

	+ (void)deleteContactPsersonId:(NSNumber *)Id
	success:(void(^)())success
	failure:(void(^)(NSError *))failure;

	@end
	//
	// APIHandler.m
	// Orakuru
	//
	// Created by Mitrmitri on 11/19/2557 BE.
	// Copyright (c) 2557 Codemy. All rights reserved.
	//

	#import "APIHandler.h"
	#import "Listing.h"
	#import "Region.h"
	#import "User.h"
	#import "Tag.h"
	#import "Address.h"
	#import "TokenStorage.h"
	#import "User.h"
	#import "ContactPerson.h"
	#import "Connection.h"

	#import <CoreLocation/CoreLocation.h>
	#import <Mantle/MTLJSONAdapter.h>

	@interface AFHTTPRequestOperationManager(Auth)
	+ (instancetype)authManager:(User *)user;
	@end
	@implementation AFHTTPRequestOperationManager (Auth)

	+ (instancetype)authManager:(User *)user {
	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
	[manager.requestSerializer setValue:[user.userID stringValue]
	forHTTPHeaderField:@"X-User-Id"];
	[manager.requestSerializer setValue:user.UUID
	forHTTPHeaderField:@"X-Device-Uid"];
	[manager.requestSerializer setValue:user.authToken
	forHTTPHeaderField:@"X-Auth-Token"];

	return manager;
	}
	@end

	@implementation APIHandler

	+ (void)searchListingWithQuery:(NSString *)searchText
	paging:(NSInteger)pageNunber
	success:(void(^)(NSArray *listings))success
	failure:(void(^)(NSString *message))failure
	{
	// In the case of an empty search query
	if ([searchText isEqualToString:@""]) {
	searchText = @"Sushi";
	}

	NSDictionary * parameters = @{@"q" : searchText,
	@"page" : @(pageNunber)};

	[self searchListingWithParams:parameters
	success:success
	failure:failure];
	}

	+ (void)searchListingWithQuery:(NSString *)searchText
	latitude:(double)lat
	longitude:(double)lon
	categoryIDs:(NSArray *)categoryIDs
	regionIDs:(NSArray *)regionIDs
	tagIDs:(NSArray *)tagIDs
	paging:(NSInteger)pageNunber
	success:(void(^)(NSArray *listings))success
	failure:(void(^)(NSString *message))failure
	{
	// In the case of an empty search query
	if (!searchText \|\| [searchText isEqualToString:@""]) {
	@throw [NSException exceptionWithName:NSInvalidArgumentException
	reason:@"SearchText must not be nil or empty string"
	userInfo:nil];
	}

	NSMutableDictionary * parameters = [@{@"q" : searchText,
	@"lat" : @(lat),
	@"lon" : @(lon),
	@"page" : @(pageNunber)} mutableCopy];

	if (regionIDs.count > 0) parameters[@"r"] = regionIDs;
	if (categoryIDs.count > 0) parameters[@"c"] = categoryIDs;
	if (tagIDs.count > 0 ) parameters[@"k"] = tagIDs;

	[self searchListingWithParams:parameters
	success:success
	failure:failure];
	}

	+ (void)searchListingWithParams:(NSDictionary *)params
	success:(void(^)(NSArray *listings))success
	failure:(void(^)(NSString *message))failure {
	// Query encoding

	NSString * url = [BASE_URL stringByAppendingPathComponent:@"v1/search"];

	[[AFHTTPRequestOperationManager manager] GET:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
	NSArray * listings = [MTLJSONAdapter modelsOfClass:[Listing class]
	fromJSONArray:responseObject[@"listings"]
	error:nil];
	success(listings);

	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	NSLog(@"%@",error);
	}];
	}

	+ (void)getListingWithID:(NSInteger)ID
	success:(void (^)(Listing *))success
	failure:(void (^)(NSString *))failure {
	NSString *resourcePath = [NSString stringWithFormat:@"v1/listings/%ld", (long)ID];
	NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];

	[[AFHTTPRequestOperationManager manager] GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

	Listing *listing = [MTLJSONAdapter modelOfClass:[Listing class]
	fromJSONDictionary:responseObject
	error:nil];
	listing.fetched = YES;
	success(listing);

	} failure:^(AFHTTPRequestOperation operation, NSError error) {

	failure(error.description);

	}];
	}

	#pragma mark - My Listings

	+ (void)searchListingsWithUser:(User *)currentUser
	success:(void (^)(NSArray *listings))success
	failure:(void (^)(NSString *error))failure {
	NSString *url = [NSString stringWithFormat:@"%@/v1/listings",BASE_URL];

	AFHTTPRequestOperationManager *manager = [self configureHeaderForAuthenticatedRequestUser:currentUser];

	[manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
	NSArray *listings = [MTLJSONAdapter modelsOfClass:[Listing class] fromJSONArray:responseObject error:nil];
	success(listings);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure([error description]);
	}];
	}


	#pragma mark - Region Handler

	+ (void)searchRegionsWithParameters:(NSString *)keyword
	success:(void(^)(NSArray *regions))success
	failure:(void(^)(NSString *error))failure {

	// TODO: Change BASE_URL to comply with updated conventions
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/regions"];
	NSDictionary *parameters = @{@"q":keyword};

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

	[manager GET:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {

	NSArray * regions = [MTLJSONAdapter modelsOfClass:[Region class] fromJSONArray:responseObject error:nil];
	success(regions);

	} failure:^(AFHTTPRequestOperation operation, NSError error) {

	NSLog(@"%@", error);

	}];

	}

	#pragma mark - Tag API

	+ (void)searchTagsWithKeyword:(NSString *)keyword
	success:(void (^)(NSArray *))success
	failure:(void (^)(NSString *))failure {

	// TO DO: Change BASE_URL to comply with updated conventions
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/tags"];
	NSDictionary *parameters = @{@"name":keyword};

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

	[manager GET:url
	parameters:parameters
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	NSArray * tags = [MTLJSONAdapter modelsOfClass:[Tag class]
	fromJSONArray:responseObject
	error:nil];
	success(tags);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure([error description]);
	}];
	}

	+ (void)createTag:(Tag *)tag
	user:(User *)currentUser
	success:(void (^)(Tag *))success
	failure:(void (^)(NSString *))failure {
	// TO DO: Change BASE_URL to comply with updated conventions
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/tags"];
	NSDictionary *parameters = [MTLJSONAdapter JSONDictionaryFromModel:tag];

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];


	[manager POST:url
	parameters:parameters
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	Tag *response = [MTLJSONAdapter modelOfClass:[Tag class]
	fromJSONDictionary:responseObject
	error:nil];
	tag.ID = response.ID;
	success(tag);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure([error description]);
	}];
	}

	+ (id)JSONWithFile:(NSString *)fileName {
	NSString *filePath = [[NSBundle mainBundle] pathForResource:fileName
	ofType:@"json"];
	NSData *JSONData = [NSData dataWithContentsOfFile:filePath];

	return [NSJSONSerialization JSONObjectWithData:JSONData
	options:kNilOptions
	error:nil];
	}

	#pragma mark - connections
	+ (void)createConnection:(Connection *)connection
	success:(void(^)(NSNumber *Id))success
	failure:(void(^)(NSError *error))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/connections"];
	NSDictionary *connectionDict = [MTLJSONAdapter JSONDictionaryFromModel:connection];
	NSDictionary *params = @{@"connection": connectionDict};

	[manager POST:url
	parameters:params
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	success(responseObject[@"id"]);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	+ (void)deleteConnectionId:(NSNumber *)Id
	success:(void(^)())success
	failure:(void(^)(NSError *error))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *resourcePath = [NSString stringWithFormat:@"v1/connections/%@", [Id stringValue]];
	NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];

	[manager DELETE:url
	parameters:nil
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	success();
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}


	#pragma mark - User Handler

	+ (void)loginInWithEmail:(NSString *)email
	AndPassword:(NSString *)password
	AndUUID:(NSString *)UUID
	success:(void(^)(User *user))success
	failure:(void(^)(NSError *error))failure {

	NSDictionary *userDict = @{@"email":email, @"password":password};
	NSDictionary *deviceDict = @{@"uid":UUID};
	NSDictionary *params = @{@"user":userDict, @"device":deviceDict};

	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/sessions"];
	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
	[manager POST:url
	parameters:params
	success:^(AFHTTPRequestOperation *operation, id responseObject) {
	NSString *userID = [responseObject objectForKey:@"user_id"];
	NSNumber *userIDNumber = @([userID intValue]);
	// User becomes initialized
	User *user = [[User alloc] initWithEmail:email
	AndPassword:password
	AndUUID:UUID
	AndUserID:userIDNumber
	AndAuthToken:[responseObject objectForKey:@"authentication_token"]];
	// Return User
	success(user);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];

	}

	+ (AFHTTPRequestOperationManager )configureHeaderForAuthenticatedRequestUser:(User )currentUser {
	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
	[manager.requestSerializer setValue:[currentUser.userID stringValue]
	forHTTPHeaderField:@"X-User-Id"];
	[manager.requestSerializer setValue:currentUser.UUID
	forHTTPHeaderField:@"X-Device-Uid"];
	[manager.requestSerializer setValue:currentUser.authToken
	forHTTPHeaderField:@"X-Auth-Token"];

	return manager;
	}

	#pragma mark - update Listing

	+ (void)updateListing:(Listing *)listing
	byUser:(User *)currentUser
	success:(void (^)())success
	failure:(void(^)(NSString *error))failure {

	NSString *url = [NSString stringWithFormat:@"%@/v1/listings/%@",BASE_URL,listing.ID];

	NSDictionary *parameters = @{ @"listing" :
	@{
	@"name" : [self checkStringIsNull:listing.name],
	@"market_name" : [self checkStringIsNull:listing.marketName],
	@"short_description" : [self checkStringIsNull:listing.shortDescription],
	@"long_description" : [self checkStringIsNull:listing.longDescription],
	@"tag_tokens" : [listing tagAsCSV],
	@"main_email" : [self checkStringIsNull:listing.mainEmail],
	@"main_phone" : [self checkStringIsNull:listing.mainPhone],
	@"main_fax" : [self checkStringIsNull:listing.mainFax],
	@"facebook" : [self checkStringIsNull:listing.facebook],
	@"twitter" : [self checkStringIsNull:listing.twitter],
	@"instagram" : [self checkStringIsNull:listing.instagram],
	@"google_plus" : [self checkStringIsNull:listing.googlePlus],
	@"latitude" : [NSNumber numberWithDouble:listing.coordinates.latitude],
	@"longitude" : [NSNumber numberWithDouble:listing.coordinates.longitude],
	@"connection_ids" : [listing allConnectionIds],
	@"person_ids" : [listing personIds],
	@"address_ids" : [listing allAddressIds]
	}
	};

	AFHTTPRequestOperationManager *manager = [self configureHeaderForAuthenticatedRequestUser:currentUser];
	[manager PUT:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
	success();
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error.description);
	}];

	}

	+ (NSString )checkStringIsNull:(NSString )value {
	if (!value) {
	return (NSString *)[NSNull null];
	}
	return value;
	}

	#pragma mark - addresses

	+ (void)createAddress:(Address *)address
	success:(void (^)(NSNumber *))success
	failure:(void (^)(NSError *))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/addresses"];
	NSDictionary *params = @{@"address": [MTLJSONAdapter JSONDictionaryFromModel:address]};
	[manager POST:url
	parameters:params
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	success(responseObject[@"id"]);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	+ (void)deleteAddressId:(NSNumber *)Id
	success:(void (^)())success
	failure:(void (^)(NSError *))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *resourcePath = [NSString stringWithFormat:@"v1/addresses/%@", [Id stringValue]];
	NSString *url = [BASE_URL stringByAppendingPathComponent:resourcePath];
	[manager DELETE:url
	parameters:nil
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	success();
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}


	#pragma mark - photos

	+ (void)createPhoto:(NSURL *)photoURL
	forListing:(Listing *)listing
	success:(void(^)(NSNumber *photoID))success
	failure:(void(^)(NSError *error))failure {

	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSInteger uploadsIndex = [[photoURL absoluteString] rangeOfString:@"uploads/"].location;
	NSString *photoKey = [[photoURL absoluteString] substringFromIndex:uploadsIndex];
	NSMutableDictionary *params = [NSMutableDictionary dictionary];
	params[@"photo"] = @{@"key":photoKey};
	params[@"listing_id"] = [listing.ID stringValue];

	[manager POST:[BASE_URL stringByAppendingPathComponent:@"v1/photos"]
	parameters:params
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	NSNumber *photoID = responseObject[@"id"];
	success(photoID);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	+ (void)getUniquePhotoKeySuccess:(void (^)(NSString *))success
	failure:(void (^)(NSError *))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	[manager GET:[BASE_URL stringByAppendingPathComponent:@"v1/photos/new"]
	parameters:nil
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	NSString *key = responseObject[@"key"];
	if (key.length > 0) {
	success(key);
	} else {
	failure([NSError errorWithDomain:@"API"
	code:0
	userInfo:@{NSLocalizedDescriptionKey: @"Cannot request key for photo creation"}]);
	}
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	+ (void)deletePhoto:(NSNumber *)photoID
	success:(void(^)())success
	failure:(void(^)(NSError *error))failure {
	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];

	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/photos"];
	url = [url stringByAppendingPathComponent:[photoID stringValue]];
	[manager DELETE:url
	parameters:nil
	success:^(AFHTTPRequestOperation *operation, id responseObject)
	{
	success();
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}


	#pragma mark - contact people

	+ (void)createContactPerson:(ContactPerson *)contactPerson
	success:(void(^)(NSNumber *Id))success
	failure:(void(^)(NSError *))failure {

	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/people"];
	NSDictionary *params = @{@"person":[MTLJSONAdapter JSONDictionaryFromModel:contactPerson]};
	[manager POST:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
	success(responseObject[@"id"]);
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	+ (void)deleteContactPsersonId:(NSNumber *)Id
	success:(void(^)())success
	failure:(void(^)(NSError *))failure {

	User *user = [User currentUser];

	if (!user \|\| !user.isLogin) {
	NSString *msg = [NSString stringWithFormat:@"%s need authentication", __func__];
	failure([NSError errorWithDomain:@"Authentication"
	code:0
	userInfo:@{NSLocalizedDescriptionKey:msg}]);
	return;
	}

	AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager authManager:user];
	NSString *url = [BASE_URL stringByAppendingPathComponent:@"v1/people"];
	url = [url stringByAppendingPathComponent:[Id stringValue]];
	[manager DELETE:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
	success();
	} failure:^(AFHTTPRequestOperation operation, NSError error) {
	failure(error);
	}];
	}

	@end
	//
	// TokenStorage.h
	// Orakuru
	//
	// Created by Developer on 12/03/2015.
	// Copyright (c) 2015 Codemy. All rights reserved.
	//

	// Saving the Token in the device (keychain)

	#import <Foundation/Foundation.h>
	#import <SSKeychain.h>
	#import "User.h"

	// Service Name
	static NSString * const kServiceName = @"Orakuru";
	// Keys
	static NSString * const kAuthToken = @"authentication_token";
	static NSString * const kEmail = @"email";
	static NSString * const kUserID = @"userID";
	static NSString * const kUUID = @"UUID";
	static NSString * const kIsLogin = @"isLogin";

	@interface TokenStorage : NSObject

	- (void)clearSavedCredentialsOfUser:(User *)credentials;
	- (NSString *)getSecureStringValueForKey:(id)key;
	- (void)saveUserCredentials:(User *)credentials;

	@end
	//
	// TokenStorage.m
	// Orakuru
	//
	// Created by Developer on 12/03/2015.
	// Copyright (c) 2015 Codemy. All rights reserved.
	//

	#import "TokenStorage.h"

	#define SERVICE_NAME @"Orakuru"
	#define AUTH_TOKEN_KEY @"authentication_token"


	@implementation TokenStorage

	- (NSDictionary )createDictionaryFromUserCredentials:(User )credentials {

	NSString *userIDString = [credentials.userID stringValue];
	NSString *userIsLoginString = credentials.isLogin ? @"YES" : @"NO";

	return @{
	kEmail:credentials.email,
	kUserID:userIDString,
	kUUID:credentials.UUID,
	kAuthToken:credentials.authToken,
	kIsLogin:userIsLoginString
	};
	}

	- (void)saveUserCredentials:(User *)credentials {
	NSDictionary *container = [self createDictionaryFromUserCredentials:credentials];
	for(id key in container.allKeys) {
	id value = [container objectForKey:key];
	[SSKeychain setPassword:value
	forService:SERVICE_NAME
	account:key];
	}
	}

	#pragma mark - Get secure value

	- (NSString )getSecureStringValueForKey:(NSString )key {
	return [SSKeychain passwordForService:SERVICE_NAME account:key];
	}

	#pragma mark - Clear credentials

	- (void)clearSavedCredentialsOfUser:(User *)credentials {

	NSDictionary *container = [self createDictionaryFromUserCredentials:credentials];

	for (id key in container.allKeys) {
	[SSKeychain deletePasswordForService:SERVICE_NAME account:key];
	}
	}

	@end
	//
	// User.h
	// Orakuru
	//
	// Created by offz on 2/25/2558 BE.
	// Copyright (c) 2558 Codemy. All rights reserved.
	//

	#import <Foundation/Foundation.h>

	@interface User : NSObject

	@property (assign, nonatomic, readonly) BOOL isLogin;
	@property (strong, nonatomic) NSString *UUID;
	@property (strong, nonatomic) NSNumber *userID;
	@property (strong, nonatomic) NSString *email;
	@property (strong, nonatomic) NSString *password;
	@property (strong, nonatomic) NSString *authToken;

	+ (instancetype)currentUser;

	- (instancetype)initWithEmail:(NSString *)email
	AndPassword:(NSString *)password
	AndUUID:(NSString *)UUID
	AndUserID:(NSNumber *)userID
	AndAuthToken:(NSString *)authToken;

	- (void)logOut:(User *)currentUser;
	- (void)assignValueToCurrentUser;

	@end
	//
	// User.m
	// Orakuru
	//
	// Created by offz on 2/25/2558 BE.
	// Copyright (c) 2558 Codemy. All rights reserved.
	//

	#import "User.h"
	#import <AFNetworking/AFNetworking.h>
	#import "TokenStorage.h"

	@interface User()
	@property (strong, nonatomic) TokenStorage *store;
	// Not writeable from public API
	@property (assign, nonatomic, readwrite) BOOL isLogin;
	@end

	@implementation User

	// Designated initializer
	- (instancetype)initWithEmail:(NSString *)email
	AndPassword:(NSString *)password
	AndUUID:(NSString *)UUID
	AndUserID:(NSNumber *)userID
	AndAuthToken:(NSString *)authToken {

	self = [super init];

	if (self) {

	_email = email;
	_password = password;
	_UUID = UUID;
	_userID = userID;
	_authToken = authToken;

	if (!_store) {
	_store = [[TokenStorage alloc] init];
	}

	[_store saveUserCredentials:self];
	[self assignValueToCurrentUser];

	}
	return self;
	}

	- (void)logOut:(User *)currentUser {
	[self.store clearSavedCredentialsOfUser:currentUser];
	[self resetCurrentUser];
	}

	+ (instancetype)currentUser {
	static User *instance = nil;
	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
	instance = [User new];
	instance.isLogin = NO;
	});
	return instance;
	}

	- (void)assignValueToCurrentUser {
	[User currentUser].isLogin = [self.store getSecureStringValueForKey:kIsLogin];
	if ([User currentUser].isLogin) {
	[User currentUser].email = [self.store getSecureStringValueForKey:kEmail];
	[User currentUser].UUID = [self.store getSecureStringValueForKey:kUUID];
	[User currentUser].userID = @([[self.store getSecureStringValueForKey:kUserID] intValue]);
	[User currentUser].authToken = [self.store getSecureStringValueForKey:kAuthToken];
	}
	}

	- (void)resetCurrentUser {
	[User currentUser].isLogin = NO;
	[User currentUser].email = nil;
	[User currentUser].UUID = nil;
	[User currentUser].userID = nil;
	[User currentUser].authToken = nil;
	}

	-(TokenStorage *)store {
	if (!_store) {
	_store = [[TokenStorage alloc] init];
	}
	return _store;
	}

	- (NSString *)email {
	if (self.isLogin) {
	_email = [self.store getSecureStringValueForKey:kEmail];
	}
	return _email;
	}


	- (NSNumber *)userID {
	if (self.isLogin) {
	NSNumber *userID = @([[self.store getSecureStringValueForKey:kUserID] intValue]);
	_userID = userID;
	}
	return _userID;
	}


	- (NSString *)UUID {
	if (self.isLogin) {
	_UUID = [self.store getSecureStringValueForKey:kUUID];
	}
	return _UUID;
	}

	- (NSString *)authToken {
	if (self.isLogin) {
	_authToken = [self.store getSecureStringValueForKey:kAuthToken];
	}
	return _authToken;
	}

	@end