SDJK_iOS/SDJK/Modules/OtherModule/ExerciseModule/ViewModel/itemViewModel/RQExerciseQuestionItemViewModel.m

//
//  RQExerciseQuestionItemViewModel.m
//  SDJK
//
//  Created by 张嵘 on 2021/8/16.
//

#import "RQExerciseQuestionItemViewModel.h"
#import "XHWebImageAutoSize.h"

@interface RQExerciseQuestionItemViewModel ()
@property (nonatomic, readwrite, strong) RQExerciseModel *exerciseModel;
@property (nonatomic, readwrite, strong) YYLabel *yyLabel;
@property (nonatomic, readwrite, strong) NSString *typeString;
@property (nonatomic, readwrite, strong) NSString *newString;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *qusetionString;
@property (nonatomic, readwrite, assign) CGFloat labelHeight;
@property (nonatomic, readwrite, assign) CGFloat imageHeight;
@property (nonatomic, readwrite, strong) NSString *imageString;
@property (nonatomic, readwrite, strong) NSString *videoString;
@property (nonatomic, readwrite, strong) NSMutableAttributedString *spaceAttachment;

@end

@implementation RQExerciseQuestionItemViewModel
- (instancetype)initWithRQExerciseModel:(RQExerciseModel *)exerciseModel {
    if (self = [super init]) {
        self.exerciseModel = exerciseModel;
        if ([exerciseModel.answer containsString:@"-"]) {
            self.typeString = @"多选题";
        } else if ([exerciseModel.answer containsString:@"√"] || [exerciseModel.answer containsString:@"×"]) {
            self.typeString = @"判断题";
        } else {
            self.typeString = @"单选题";
        }
        
        NSString *questionStr = [NSString stringWithFormat:@"%ld、%@",(long)exerciseModel.num + 1,exerciseModel.issue];
        
        NSMutableAttributedString *text = [NSMutableAttributedString new];
        NSMutableAttributedString *testText = [NSMutableAttributedString new];
        
        NSMutableAttributedString *typeAttachment = nil;
    
        QMUIButton *typeBtn = [QMUIButton buttonWithType:UIButtonTypeCustom];
        CGFloat btnHeight = (25.f / 17.f) * RQ_Exercise_Module.exerciseFontSize;
        CGFloat btnWeight = (60.f / 25.f) * btnHeight;
        CGFloat btnCornerRadius = btnHeight / 2.f;
        CGSize btnSize = CGSizeMake(btnWeight, btnHeight);
        typeBtn.size = btnSize;
        [typeBtn setTitle:self.typeString textColor:RQ_MAIN_TEXT_COLOR_WHITE Font:RQ_Exercise_Module.exerciseFontSize - 3 fotState:UIControlStateNormal];
        [typeBtn setBackgroundImage:[UIImage qmui_imageWithColor:RQ_MAIN_COLOR size:btnSize cornerRadiusArray:@[@(btnCornerRadius), @(btnCornerRadius), @0, @(btnCornerRadius)]] forState:UIControlStateNormal];
        
        
        typeAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:typeBtn
                                                                   contentMode:UIViewContentModeCenter
                                                                attachmentSize:btnSize
                                                                   alignToFont:[UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize]
                                                                     alignment:YYTextVerticalAlignmentCenter];
        [testText appendAttributedString:typeAttachment];
        [testText appendAttributedString:self.spaceAttachment];

        
        
        if (exerciseModel.is_new) {
            NSMutableAttributedString *newAttachment = nil;
            QMUIButton *newBtn = [QMUIButton buttonWithType:UIButtonTypeCustom];
            newBtn.size = btnSize;
            [newBtn setTitle:@"新规题" textColor:RQ_MAIN_TEXT_COLOR_WHITE Font:RQ_Exercise_Module.exerciseFontSize - 3 fotState:UIControlStateNormal];
            [newBtn setBackgroundImage:[UIImage qmui_imageWithColor:RQColorFromHexString(@"#9C5FED") size:btnSize cornerRadiusArray:@[@(btnCornerRadius), @(btnCornerRadius), @(btnCornerRadius), @(btnCornerRadius)]] forState:UIControlStateNormal];
            newAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:newBtn
                                                                       contentMode:UIViewContentModeCenter
                                                                    attachmentSize:btnSize
                                                                       alignToFont:[UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize]
                                                                         alignment:YYTextVerticalAlignmentCenter];
            [testText appendAttributedString:newAttachment];
            [testText appendAttributedString:self.spaceAttachment];
        }
        
        
        NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:questionStr];
        attrString.yy_font = [UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
        attrString.yy_color = RQ_MAIN_TEXT_COLOR_1;
        
        if (RQStringIsNotEmpty(exerciseModel.titlekeyword) && exerciseModel.isShowSkillExplanation) {
            [[[exerciseModel.titlekeyword componentsSeparatedByString:@"-"].rac_sequence.signal deliverOnMainThread] subscribeNext:^(NSString * _Nullable skillkeywordStr) {
                NSRange range = [questionStr rangeOfString:skillkeywordStr];
                [attrString yy_setColor:RQ_MAIN_TEXT_COLOR_RED range:range];
                [attrString yy_setFont:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize + 2] range:range];
            }];
        }
        
    //    NSRange range = [string rangeOfString:@"《遵守实验室须知》"];
    //    [attrString yy_setColor:[UIColor colorWithHexString:@"#19ADA9"] range:range];
    //
    //    [attrString yy_setTextHighlightRange:range
    //                                   color:[UIColor colorWithHexString:@"#19ADA9"]
    //                         backgroundColor:[UIColor blueColor]
    //                               tapAction:^(UIView * _Nonnull containerView, NSAttributedString * _Nonnull text, NSRange range, CGRect rect) {
    //        [_self showMessage:[NSString stringWithFormat:@"Tap: %@",[text.string substringWithRange:range]]];
    //    }];
        [testText appendAttributedString: attrString];

        [text appendAttributedString:testText];
    //    [text appendAttributedString:[self padding]];
        text.yy_lineSpacing = 8;
        
        
        self.qusetionString = text;
        self.labelHeight = [self getMessageHeightWithAttributedStr:text andLabel:self.yyLabel];
        
        self.imageString = exerciseModel.image;
        self.videoString = @"";
        
        if (RQStringIsNotEmpty(self.imageString)) {
            NSString *cacheKeyStr = [[YYWebImageManager sharedManager] cacheKeyForURL:[NSURL URLWithString:self.imageString]];
            UIImage *cacheImage = [[YYImageCache sharedCache] getImageForKey:cacheKeyStr];
            CGSize imageSize;
            if (cacheImage) {
                imageSize = cacheImage.size;
            } else {
                imageSize = [UIImage getImageSizeWithURL:self.imageString];
            }
            if (imageSize.width == 0 || imageSize.height == 0) {
                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (175.f / 345.f);
            } else {
                self.imageHeight = (RQ_SCREEN_WIDTH - 32.f) * (imageSize.height / imageSize.width);
            }
            self.rowHeight = 16.f + self.labelHeight + 16.f + self.imageHeight + 16.f;
        } else {
            self.rowHeight = 16.f + self.labelHeight + 16.f;
        }
        
        
//        预选Option
//        NSString *questionStr = [NSString stringWithFormat:@"%ld、%@",(long)exerciseModel.num + 1,exerciseModel.issue];
//        self.qusetionString = [[NSMutableAttributedString alloc] initWithString:questionStr];
//        NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
//        [paragraphStyle setFirstLineHeadIndent:68];//首行缩进
//        [paragraphStyle setLineSpacing:10];//调整行间距
//        [_qusetionString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [questionStr length])];
//
//        if (RQStringIsNotEmpty(exerciseModel.titlekeyword) && exerciseModel.isShowSkillExplanation) {
//            [[[exerciseModel.titlekeyword componentsSeparatedByString:@"-"].rac_sequence.signal deliverOnMainThread] subscribeNext:^(NSString * _Nullable skillkeywordStr) {
//                NSRange targetRange = NSMakeRange(0, questionStr.length);
//                NSRange range = targetRange;
//                while (true) {
//                    range = [questionStr rangeOfString:skillkeywordStr options:NSLiteralSearch range:targetRange];
//
//                    if (range.location != NSNotFound) {
//                        NSRange newRange = NSMakeRange(range.location - 1, range.length + 2);
//                        if (newRange.length + newRange.location > range.location + range.length) {
//                            NSInteger a = (newRange.length + newRange.location) - (range.location + range.length);
//                            newRange = NSMakeRange(newRange.location - a, newRange.length);
//                        }
//                        NSString *keywordStr = [questionStr substringWithRange:newRange];
//                        if ([keywordStr containsString:@"“"] || [keywordStr containsString:@"”"] || [keywordStr containsString:@"\""]) {
//                            range = newRange;
//                        }
//                        targetRange = NSMakeRange(NSMaxRange(range), questionStr.length-NSMaxRange(range));
//
//                        [_qusetionString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize + 2] range:range];
//                        [_qusetionString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:RQ_Exercise_Module.exerciseFontSize] range:targetRange];
//                        [_qusetionString addAttribute:NSForegroundColorAttributeName value:RQ_MAIN_TEXT_COLOR_RED range:range];
//
//                    } else {
//                        break;
//                    }
//                }
//
//            } completed:^{
//                NSMutableAttributedString *caculateStr = [[NSMutableAttributedString alloc] initWithAttributedString:_qusetionString];
//                [caculateStr appendAttributedString:[[NSMutableAttributedString alloc] initWithString:_typeString]];
//                CGFloat yyHeight = [caculateStr.string  heightForFont:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize] width:RQ_SCREEN_WIDTH - (16 * 2)];
//                NSInteger lineNum  = [self needLinesWithText:caculateStr.string width:RQ_SCREEN_WIDTH - (16 * 2)];
//                CGFloat labelHeight = yyHeight + (lineNum > 1? lineNum - 1 : 0) * 10;
//                self.imageString = exerciseModel.image;
//                self.videoString = @"";
//
//                if (RQStringIsEmpty(_imageString)) {
//                    self.rowHeight = labelHeight + (16 * 2);
//                } else {
//                    self.rowHeight = labelHeight + (RQ_SCREEN_WIDTH - 32) * 0.4 + (16 * 3);
//                }
//            }];
//
//        } else {
//            NSMutableAttributedString *caculateStr = [[NSMutableAttributedString alloc] initWithAttributedString:_qusetionString];
//            [caculateStr appendAttributedString:[[NSMutableAttributedString alloc] initWithString:_typeString]];
//            if (exerciseModel.is_new) {
//                [caculateStr appendAttributedString:[[NSMutableAttributedString alloc] initWithString:self.newString]];
//            }
//            CGFloat yyHeight = [caculateStr.string  heightForFont:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize] width:RQ_SCREEN_WIDTH - (16 * 2)];
//            NSInteger lineNum  = [self needLinesWithText:caculateStr.string width:RQ_SCREEN_WIDTH - (16 * 2)];
//            CGFloat labelHeight = yyHeight + (lineNum > 1? lineNum - 1 : 0) * 10;
//            self.imageString = exerciseModel.image;
//            self.videoString = @"";
//
//            if (RQStringIsEmpty(_imageString)) {
//                self.rowHeight = labelHeight + (16 * 2);
//            } else {
//                self.rowHeight = labelHeight + (RQ_SCREEN_WIDTH - 32) * 0.4 + (16 * 3);
//            }
//        }
        
        
    }
    return self;
}

/**
 显示当前文字需要几行

 @param width 给定一个宽度
 @return 返回行数
 */
- (NSInteger)needLinesWithText:(NSString *)textStr width:(CGFloat)width {
    //创建一个labe
    UILabel * label = [[UILabel alloc]init];
    //font和当前label保持一致
    label.font = [UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
    NSString * text = textStr;
    NSInteger sum = 0;
    //总行数受换行符影响，所以这里计算总行数，需要用换行符分隔这段文字，然后计算每段文字的行数，相加即是总行数。
    NSArray * splitText = [text componentsSeparatedByString:@"\n"];
    for (NSString * sText in splitText) {
        label.text = sText;
        //获取这段文字一行需要的size
        CGSize textSize = [label systemLayoutSizeFittingSize:CGSizeZero];
        //size.width/所需要的width 向上取整就是这段文字占的行数
        NSInteger lines = ceilf(textSize.width/width);
        //当是0的时候，说明这是换行，需要按一行算。
        lines = lines == 0?1:lines;
        sum += lines;
    }
    return sum;
}

- (NSString *)newString {
    return @"新规题";
}

/**
 *  获取lb的高度
 *  @param mess lb.text
 *  @param lb (YYLabel *)label
 *  @return lb的高度
 */
- (CGFloat)getMessageHeight:(NSString *)mess andLabel:(YYLabel *)lb {
    NSMutableAttributedString *introText = [[NSMutableAttributedString alloc] initWithString:mess];
    introText.yy_font = [UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize];
    introText.yy_lineSpacing = 8;
    lb.attributedText = introText;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH - (16 * 2), CGFLOAT_MAX);
    YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:introSize text:introText];
    lb.textLayout = layout;
    CGFloat introHeight = layout.textBoundingSize.height;
    return introHeight;
}

- (CGFloat)getMessageHeightWithAttributedStr:(NSMutableAttributedString *)attributedStr andLabel:(YYLabel *)lb {
    lb.attributedText = attributedStr;
    CGSize introSize = CGSizeMake(RQ_SCREEN_WIDTH - (16 * 2), CGFLOAT_MAX);
    YYTextLayout *layout = [YYTextLayout layoutWithContainerSize:introSize text:attributedStr];
    lb.textLayout = layout;
    CGFloat introHeight = layout.textBoundingSize.height;
    return introHeight;
}

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

- (NSMutableAttributedString *)spaceAttachment {
    if (!_spaceAttachment) {
        UIView *spaceView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 4, 25)];
        _spaceAttachment = [NSMutableAttributedString yy_attachmentStringWithContent:spaceView contentMode:UIViewContentModeCenter attachmentSize:CGSizeMake(4, 25) alignToFont:[UIFont boldSystemFontOfSize:RQ_Exercise_Module.exerciseFontSize] alignment:YYTextVerticalAlignmentCenter];
    }
    return _spaceAttachment;
}

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