JSJP_Student/jiaPei/Modules/OtherModules/ExerciseModule/ViewModel/ExercisePage/itemViewModel/RQExerciseOptionItemViewModel.m

//
//  RQExerciseOptionItemViewModel.m
//  JSJP
//
//  Created by 张嵘 on 2021/8/12.
//

#import "RQExerciseOptionItemViewModel.h"

@interface RQExerciseOptionItemViewModel ()
@property (nonatomic, readwrite, strong) RQExerciseModel *exerciseModel;
@property (nonatomic, readwrite, assign) RQExerciseOptionItemType exerciseOptionItemType;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *optsString;
@property (nonatomic, readwrite, strong) UIColor *btnBgColor;
//@property (nonatomic, readwrite, assign) RQExerciseType exerciseType;

@property (nonatomic, readwrite, strong) YYLabel *yyLabel;
@property (nonatomic, readwrite, assign) CGFloat labelHeight;


@end

@implementation RQExerciseOptionItemViewModel
/// init
- (instancetype)initWithRQExerciseModel:(RQExerciseModel *)exerciseModel allOptionsArr:(NSArray *)allOptionsArr optString:(NSString *)optString; {
    if (self = [super init]) {
        @weakify(self)
        self.exerciseModel = exerciseModel;
        self.optsString = [[NSMutableAttributedString alloc] initWithString:optString];
        self.optsString.yy_font = [UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
        self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
        self.labelHeight = [self getMessageHeightWithAttributedStr:self.optsString andLabel:self.yyLabel];
        self.rowHeight = 10.f + ((self.labelHeight < RQ_FIT_HORIZONTAL(30.f)? RQ_FIT_HORIZONTAL(30.f) : self.labelHeight)) + 10.f;
        NSArray *allOptionsArr = [@[self.exerciseModel.ydtQuestionModel.An1,self.exerciseModel.ydtQuestionModel.An2,self.exerciseModel.ydtQuestionModel.An3,self.exerciseModel.ydtQuestionModel.An4].rac_sequence.signal filter:^BOOL(NSString *optStr) {
            return RQStringIsNotEmpty(optStr);
        }].toArray;
        
        NSMutableArray *answerOptionArr = @[].mutableCopy;
        for (int i = 0; i < self.exerciseModel.ydtQuestionModel.AnswerTrue.length; i ++) {
            NSRange range;
            range.location = i;
            range.length = 1;
            NSString *indexStr = [self.exerciseModel.ydtQuestionModel.AnswerTrue substringWithRange:range];
            [answerOptionArr addObject:[allOptionsArr objectAtIndex:indexStr.integerValue - 1]];
        }
        
        
        if ([self.exerciseModel.ydtQuestionModel.An1 isEqualToString:optString]) {
            self.title = @"A";
        } else if ([self.exerciseModel.ydtQuestionModel.An2 isEqualToString:optString]) {
            self.title = @"B";
        } else if ([self.exerciseModel.ydtQuestionModel.An3 isEqualToString:optString]) {
            self.title = @"C";
        } else if ([self.exerciseModel.ydtQuestionModel.An4 isEqualToString:optString]) {
            self.title = @"D";
        }
        
        [[RACObserve(self.exerciseModel, userAnswer) deliverOnMainThread] subscribeNext:^(id  _Nullable x) {
            @strongify(self)
            if (self.exerciseModel.ydtQuestionModel.Type == 3) {
                NSArray *userAnswerArr = (RQ_Exercise_Module.currentExerciseType == RQExerciseType_Recitation)? answerOptionArr.copy : self.exerciseModel.userAnswer;
//                NSArray *userAnswerArr = self.exerciseModel.userAnswer;
                if ([userAnswerArr containsObject:@"预选Option"]) {
                    if ([userAnswerArr containsObject:optString]) {
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_COLOR range:NSMakeRange(0, optString.length)];
                        self.btnBgColor = RQ_MAIN_COLOR;
                    } else {
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_1 range:NSMakeRange(0, optString.length)];
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
                    }
                } else {
                    self.operation = ^{};
                    if ([userAnswerArr containsObject:optString] && [answerOptionArr containsObject:optString]) {
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_GREEN range:NSMakeRange(0, optString.length)];
                        self.title = @"";
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_GREEN;
                        if (RQ_Exercise_Module.currentExerciseType != RQExerciseType_Recitation) {
                            self.exerciseModel.answerResultsType = (self.exerciseModel.answerResultsType == RQAnswerResultsType_Error)? RQAnswerResultsType_Error : RQAnswerResultsType_Correct;
                        }
                    } else if ([userAnswerArr containsObject:optString] && ![answerOptionArr containsObject:optString]) {
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_RED range:NSMakeRange(0, optString.length)];
                        self.title = @"";
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_RED;
                        if (RQ_Exercise_Module.currentExerciseType != RQExerciseType_Recitation) {
                            self.exerciseModel.answerResultsType = RQAnswerResultsType_Error;
                        }
                    } else if (![userAnswerArr containsObject:optString] && [answerOptionArr containsObject:optString]) {
                        [_optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_GREEN range:NSMakeRange(0, optString.length)];
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_GREEN;
                        if (RQ_Exercise_Module.currentExerciseType != RQExerciseType_Recitation) {
                            self.exerciseModel.answerResultsType = RQAnswerResultsType_Error;
                        }
                    } else {
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_1 range:NSMakeRange(0, optString.length)];
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
                    }
                }
            } else {
                
                NSString *answerOptionStr = allOptionsArr[self.exerciseModel.ydtQuestionModel.AnswerTrue.integerValue - 1];
                NSArray *userAnswerArr = (RQ_Exercise_Module.currentExerciseType == RQExerciseType_Recitation)? answerOptionArr.copy : self.exerciseModel.userAnswer;
//                NSArray *userAnswerArr = self.exerciseModel.userAnswer;
                if (userAnswerArr.count > 0) {
                    self.operation = ^{};
                    if ([answerOptionStr isEqualToString:optString]) {
                        /// 正确选项
                        [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_GREEN range:NSMakeRange(0, optString.length)];
                        if ([userAnswerArr.firstObject isEqualToString:optString]) {
                            self.title = @"";
                            if (RQ_Exercise_Module.currentExerciseType != RQExerciseType_Recitation) {
                                self.exerciseModel.answerResultsType = RQAnswerResultsType_Correct;
                            }
                        }
                        self.btnBgColor = RQ_MAIN_TEXT_COLOR_GREEN;
                    } else {
                        /// 错误选项
                        if ([userAnswerArr containsObject:optString]) {
                            if (RQ_Exercise_Module.currentExerciseType != RQExerciseType_Recitation) {
                                self.exerciseModel.answerResultsType = RQAnswerResultsType_Error;
                                [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_RED range:NSMakeRange(0, optString.length)];
                                self.title = @"";
                                self.btnBgColor = RQ_MAIN_TEXT_COLOR_RED;
                            } else {
                                [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_1 range:NSMakeRange(0, optString.length)];
                                self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
                            }
                        } else {
                            [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_1 range:NSMakeRange(0, optString.length)];
                            self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
                        }
                    }
                } else {
                    [self.optsString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_1 range:NSMakeRange(0, optString.length)];
                    self.btnBgColor = RQ_MAIN_TEXT_COLOR_WHITE;
                }
            }
        }];
        
        [[[RACObserve(RQ_Exercise_Module, exerciseFontSize) takeUntil:self.rac_willDeallocSignal] deliverOnMainThread] subscribeNext:^(id  _Nullable x) {
            @strongify(self)
            self.optsString.yy_font = [UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
            self.optsString = self.optsString;
            self.labelHeight = [self getMessageHeightWithAttributedStr:self.optsString andLabel:self.yyLabel];
        }];
        
        
        RAC(self, rowHeight) = [[[RACSignal combineLatest:@[[RACObserve(RQ_Exercise_Module, exerciseFontSize) takeUntil:self.rac_willDeallocSignal],[RACObserve(self, labelHeight) takeUntil:self.rac_willDeallocSignal]] reduce:^(NSNumber *exerciseFontSize, NSNumber *labelHeight) {
            return @(10.f + ((labelHeight.floatValue < RQ_FIT_HORIZONTAL(30.f)? RQ_FIT_HORIZONTAL(30.f) : labelHeight.floatValue)) + 10.f);
        }] deliverOnMainThread] takeUntil:self.rac_willDeallocSignal];
        //答题-block
        self.operation = (RQ_Exercise_Module.currentExerciseType == RQExerciseType_Recitation)? ^{} : ^{
            @strongify(self)
            if (RQ_USER_MANAGER.tryLookCount > 0) {//试看次数
                RQ_USER_MANAGER.tryLookCount = RQ_USER_MANAGER.tryLookCount - 1;
            }
            if (self.exerciseModel.ydtQuestionModel.Type == 3) {
                if (![self.exerciseModel.userAnswer containsObject:optString]) {
                    NSMutableArray *userAnswerArr = self.exerciseModel.userAnswer.mutableCopy;
                    [userAnswerArr addObject:optString];
                    self.exerciseModel.userAnswer = userAnswerArr.copy;
                } else {
                    NSMutableArray *userAnswerArr = self.exerciseModel.userAnswer.mutableCopy;
                    [userAnswerArr removeObject:optString];
                    self.exerciseModel.userAnswer = userAnswerArr.copy;
                }
            } else {
                self.exerciseModel.userAnswer = @[optString].mutableCopy;
//                [RQ_YDTQuestion_Module saveHistoryQuestionNumWithQuestionId:exerciseModel.ydtQuestionModel.num];
                if (exerciseModel.ydtQuestionModel.AnswerTrue.integerValue == [allOptionsArr indexOfObject:optString] + 1) {
                    [RQNotificationCenter postNotificationName:RQAutoJumpNextNotification object:nil];
                    if (RQ_Exercise_Module.isRightAutoRemoveError) {
                        [[[RQ_HTTP_Service deleteFavQuestionWithQuestionId:exerciseModel.ydtQuestionModel.ID type:RQSaveFavQuestionType_Wrong] deliverOnMainThread] subscribeNext:^(id  _Nullable x) {
                            [RQ_YDT_USER_Question_Module doQuestionWithID:exerciseModel.ydtQuestionModel.ID myAnswer:[allOptionsArr indexOfObject:optString] + 1 trueAnswer:exerciseModel.ydtQuestionModel.AnswerTrue.integerValue carType:RQ_YDTQuestion_Module.carType subject:RQ_YDTQuestion_Module.subject exerciseType:RQExerciseType_Sequential];
                            [RQNotificationCenter postNotificationName:RQCancelWrongNotification object:nil];
                        } error:^(NSError * _Nullable error) {
                            
                        }];
                    }
                } else {
                    [[[RQ_HTTP_Service saveFavQuestionWithQuestionId:exerciseModel.ydtQuestionModel.ID type:RQSaveFavQuestionType_Wrong] deliverOnMainThread] subscribeNext:^(id  _Nullable x) {
                        [RQ_YDT_USER_Question_Module doQuestionWithID:exerciseModel.ydtQuestionModel.ID myAnswer:[allOptionsArr indexOfObject:optString] + 1 trueAnswer:exerciseModel.ydtQuestionModel.AnswerTrue.integerValue carType:RQ_YDTQuestion_Module.carType subject:RQ_YDTQuestion_Module.subject exerciseType:RQExerciseType_Sequential];
                    } error:^(NSError * _Nullable error) {
                    }];
                }
            }
        };
    }
    return self;
}


- (CGFloat)getMessageHeightWithAttributedStr:(NSMutableAttributedString *)attributedStr andLabel:(YYLabel *)lb {
    lb.attributedText = attributedStr;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH - (16 * 3) - RQ_FIT_HORIZONTAL(30.f), CGFLOAT_MAX);
    YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:introSize text:attributedStr];
    lb.textLayout = layout;
    CGFloat introHeight = layout.textBoundingSize.height;
    return  introHeight + ((RQ_Exercise_Module.exerciseFontSize - 16) * 8.f);
}

- (YYLabel *)yyLabel {
    if (!_yyLabel) {
        _yyLabel = [[YYLabel alloc] init];
    }
    return _yyLabel;
}

- (NSString *)itemClassName {
    return @"RQExerciseOptionCell";
}
@end