//
//  RQChapterAndPointListViewModel.m
//  jiaPei
//
//  Created by 张嵘 on 2022/7/26.
//  Copyright © 2022 JCZ. All rights reserved.
//

#import "RQChapterAndPointListViewModel.h"

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

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

- (void)initialize {
    [super initialize];
    ///配置数据
    if ([self.title isEqualToString:@"章节练习"]) {
        [self rq_configureData_Chapter];
    } else {
        [self rq_configureData_Point];
    }
    
}

#pragma mark - PrivateMethod
- (void)rq_configureData_Chapter {
    @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];
    }];
}

- (void)rq_configureData_Point {
    /// 数据源
    RAC(self, dataSource) = [RACObserve(self, items) map:^(NSArray * items) {
        return [items.rac_sequence.signal map:^id _Nullable(RQYDTPointModel *pointModel) {
            RQCommonGroupViewModel *group = [RQCommonGroupViewModel groupViewModel];
            RQCommonItemViewModel *commonItemViewModel = [RQCommonItemViewModel itemViewModelWithTitle:pointModel.name];
            NSArray *pointArr = [RQ_YDTQuestion_Module getPointQuestionWithPointID:pointModel.id];
            commonItemViewModel.subtitle = [NSString qmui_stringWithNSInteger:pointArr.count];
            commonItemViewModel.rowHeight = RQ_FIT_HORIZONTAL(54.f);
            commonItemViewModel.operation = ^{
                NSArray *arr = [pointArr.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_SequentialPractice),
                    RQViewModelIDKey            : pointModel.name,
                    RQExerciseTypeKey           : @(RQExerciseType_Point),
                    RQViewModelUtilKey          : arr,
                }];
                RQ_Exercise_Module.otherStr = pointModel.name;
                [RQ_APPDELEGATE.services pushViewModel:exerciseViewModel animated:YES];
            };
            group.itemViewModels = @[commonItemViewModel];
            return group;
        }].toArray;
    }];
    self.items = [RQ_YDTQuestion_Module getPoint];
}

/// 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];
    }];
}

#pragma mark - 辅助方法
- (NSArray *)dataSourceWithItems:(NSArray *)items {
    NSArray *viewModels = [items.rac_sequence map:^(RQDictInfoModel *dictInfoModel) {
        RQCommonGroupViewModel *group = [RQCommonGroupViewModel groupViewModel];
        RQCommonItemViewModel *commonItemViewModel = [RQCommonItemViewModel itemViewModelWithTitle:dictInfoModel.dictValue];
        commonItemViewModel.subtitle = dictInfoModel.remark;
        commonItemViewModel.rowHeight = RQ_FIT_HORIZONTAL(54.f);
        NSArray *chapterArr = [RQ_YDTQuestion_Module getChapterQuestionWithChapterName:dictInfoModel.dictValue];
        commonItemViewModel.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_SequentialPractice),
                RQViewModelIDKey            : dictInfoModel.dictValue,
                RQExerciseTypeKey           : @(RQExerciseType_Chapter),
                RQViewModelUtilKey          : arr,
            }];
            RQ_Exercise_Module.otherStr = dictInfoModel.dictValue;
            [RQ_APPDELEGATE.services pushViewModel:exerciseViewModel animated:YES];
        };
        group.itemViewModels = @[commonItemViewModel];
        return group;
    }].array;
    
    return viewModels ?: @[];
}
@end