JSJP_Student/jiaPei/Modules/HomePageModule/ViewModel/HomeSubPage/错题收藏/RQCollectViewModel.m

//
//  RQCollectViewModel.m
//  jiaPei
//
//  Created by 张嵘 on 2022/8/3.
//  Copyright © 2022 JCZ. All rights reserved.
//

#import "RQCollectViewModel.h"

@interface RQCollectViewModel ()
/// 数组
@property (nonatomic, readwrite, copy) NSArray *items;
@end

@implementation RQCollectViewModel
#pragma mark - Public Method
- (instancetype)initWithServices:(id<RQViewModelServices>)services params:(NSDictionary *)params {
    if (self = [super initWithServices:services params:params]) {
        
    }
    return self;
}

- (void)initialize {
    [super initialize];
    @weakify(self);
    self.title = @"";
    self.prefersNavigationBarBottomLineHidden = YES;
    ///配置数据
    [self rq_configureData];
    
    [[[RQNotificationCenter rac_addObserverForName:RQCancelCollectNotification object:nil] takeUntil:self.rac_willDeallocSignal] subscribeNext:^(NSNotification * _Nullable x) {
            @strongify(self);
            [self.requestRemoteDataCommand execute:nil];
    }];
}



#pragma mark - PrivateMethod
- (void)rq_configureData {
    @weakify(self);
    /// 列表
    RAC(self, items) = self.requestRemoteDataCommand.executionSignals.switchToLatest;
    /// 数据源
    RAC(self, dataSource) = [RACObserve(self, items) map:^(NSArray * items) {
        @strongify(self)
        return RQObjectIsNil(items)? @[] : [self dataSourceWithItems:items];
    }];
}

/// 请求数据
- (RACSignal *)requestRemoteDataSignalWithPage:(NSUInteger)page {
    NSArray * (^itemsBlock)(NSArray *) = ^(NSArray *products) {
        if (page == 1 || page == 0) {
            /// 下拉刷新
        } else {
            /// 上拉加载
            products = @[(self.items ?: @[]).rac_sequence, products.rac_sequence].rac_sequence.flatten.array;
        }
        return products;
    };
    ///
    return [[[RQ_HTTP_Service getChapterList] map:itemsBlock] doError:^(NSError * _Nonnull error) {
        [MBProgressHUD rq_showErrorTips:error];
    }];
}

- (NSArray *)dataSourceWithItems:(NSArray *)items {
    __block NSInteger index = 1;
    NSArray *viewModels = [[items.rac_sequence filter:^BOOL(RQDictInfoModel *dictInfoModel) {
        return [RQ_YDTQuestion_Module getChapterQuestionWithChapterName:dictInfoModel.dictValue exerciseType:RQExerciseType_Collect].count > 0;
    }].array.rac_sequence map:^(RQDictInfoModel *dictInfoModel) {
        RQCommonGroupViewModel *group = [RQCommonGroupViewModel groupViewModel];
        NSArray *chapterArr = [RQ_YDTQuestion_Module getChapterQuestionWithChapterName:dictInfoModel.dictValue exerciseType:RQExerciseType_Collect];
        RQErrorAndCollectItemViewModel *errorAndCollectItemViewModel = [[RQErrorAndCollectItemViewModel alloc] initWithNumStr:[NSString qmui_stringWithNSInteger:index] titleStr:dictInfoModel.dictValue countStr:[NSString qmui_stringWithNSInteger:chapterArr.count]];
        index ++;
        errorAndCollectItemViewModel.operation = ^{
            NSArray *arr = [chapterArr.rac_sequence.signal map:^id _Nullable(RQYDTQuestionModel  *ydtQuestionModel) {
                return [RQExerciseModel exerciseModelWithRQYDTQuestionModel:ydtQuestionModel];
            }].toArray;
            RQExerciseViewModel *exerciseViewModel = [[RQExerciseViewModel alloc] initWithServices:RQ_APPDELEGATE.services params:@{
                RQHomePageCarTypeKey        : @(RQ_YDTQuestion_Module.carType),
                RQHomePageSubjectTypeKey    : @(RQ_YDTQuestion_Module.subject),
                RQHomeSubPageTypeKey        : @(RQHomeSubPageType_WrongTopicAndCollection),
                RQViewModelIDKey            : dictInfoModel.dictValue,
                RQExerciseTypeKey           : @(RQExerciseType_Collect),
                RQViewModelUtilKey          : arr,
            }];
            [RQ_APPDELEGATE.services pushViewModel:exerciseViewModel animated:YES];
        };
        group.itemViewModels = @[errorAndCollectItemViewModel];
        return group;
    }].array;
    
    return viewModels ?: @[];
}
@end