VSMedia.m

VSMedia.m

//
//  VSMedia.m
//  rugu
//
//  Created by Vincent Sit on 15/1/11.
//  Copyright (c) 2015年 Vincent Sit. All rights reserved.
//

#import "VSMedia.h"

// Models
#import "VSEngine.h"
#import "VSUser.h"
#import "VSPhoto.h"
#import "VSVideo.h"
#import "VSCaption.h"

/// 获取当前最流行的 media 列表.
static NSString * const kPopularURI = @"media/popular";


@implementation VSMedia
@dynamic type;
@dynamic latitude;
@dynamic longitude;
@dynamic mediaID;
@dynamic tags;
@dynamic feedUsers;
@dynamic photo;
@dynamic video;
@dynamic caption;
@dynamic user;

@synthesize coordinate = _coordinate;

#pragma mark - Override

#pragma mark - MagicalRecord

+ (NSString *)MR_entityName {
  return @"Media";
}

#pragma mark - Motis

+ (NSDictionary *)mts_mapping {
  return @{@"created_time": mts_key(createdAt),
//           @"type": mts_key(type),
           @"id": mts_key(mediaID),
           @"location.latitude": mts_key(latitude),
           @"location.longitude": mts_key(longitude),
           @"tags": mts_key(tags),
           @"images": mts_key(photo),
           @"videos": mts_key(video),
           @"caption": mts_key(caption),
           @"user": mts_key(user)
           };
}

+ (NSDictionary*)mts_arrayClassMapping {
  return @{mts_key(photo): [VSPhoto class],
           mts_key(video): [VSVideo class],
           mts_key(caption): [VSCaption class],
           mts_key(user): [VSUser class]};
}

- (void)mappingWithAttributes:(NSDictionary *)attributes {
  [super mappingWithAttributes:attributes];
  
  NSString *typeString = attributes[@"type"];
  if ([typeString isEqualToString:@"video"]) {
    self.type = VSMediaTypeVideo;
  }
  else if ([typeString isEqualToString:@"image"]) {
    self.type = VSMediaTypeImage;
  }
  else {
    self.type = VSMediaTypeUnknown;
  }
}

#pragma mark - Private

#pragma mark Custom Accessors

- (CLLocationCoordinate2D)coordinate {
  CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(self.latitude, self.longitude);
  if (CLLocationCoordinate2DIsValid(coord)) {
    return coord;
  }
  else {
    return kCLLocationCoordinate2DInvalid;
  }
}


#pragma mark - Public

+ (NSURLSessionDataTask *)loadPopularWithCompletionHandler:(VSArrayBlock)completionHandler {
  NSDictionary *parameters = nil;
  if ([VSUser currentUser].accessToken) {
    parameters = @{@"access_token": [VSUser currentUser].accessToken};
  }
  else {
    parameters = @{@"client_id": RuguInstagramClientID};
  }
  
  return [[VSEngine sharedEngine] GET:kPopularURI parameters:parameters
                              success:^(NSURLSessionDataTask *task, id responseObject) {
                                if ([responseObject vs_responseValid]) {
                                  NSMutableArray *returnedArray = [NSMutableArray array];
                                  NSArray *array = responseObject[@"data"];
                                  
                                  for (NSDictionary *dic in array) {
                                    NSString *mediaID = dic[@"id"];
                                    VSMedia *media = [VSMedia MR_findFirstByAttribute:NSStringFromSelector(@selector(mediaID)) withValue:mediaID];
                                    if (!media) {
                                      media = [VSMedia MR_createEntity];
                                    }
                                    [media mappingWithAttributes:dic];
                                    [returnedArray addObject:media];
                                  }
                                  [[NSManagedObjectContext MR_defaultContext] MR_saveOnlySelfAndWait];
                                  !completionHandler ?: completionHandler(YES, [returnedArray copy], nil);
                                }
                                else {
                                  !completionHandler ?: completionHandler(NO, nil, [VSError errorWithResponseObject:responseObject]);
                                }
                              } failure:^(NSURLSessionDataTask *task, NSError *error) {
                                !completionHandler ?: completionHandler(NO, nil, [VSError errorWithResponseError:error]);
                              }];
}

@end