Asteria-APP/Asteria/Fuction/UserCenter/views/KWMineMoreProductsCell.m

//
//  KWMineMoreProductsCell.m
//  westkissMob
//
//  Created by iOS on 2022/9/15.
//

#import "KWMineMoreProductsCell.h"
#import "KWMineMoreProductTypeCell.h"
#import "HomeFlashDealSubCollectCell.h"

@interface KWMineMoreProductsCell ()<UICollectionViewDelegate,UICollectionViewDelegateFlowLayout,UICollectionViewDataSource>

@property (nonatomic, strong) HomeFilterModel *currentKey;
@property (nonatomic, strong) NSArray<NSNumber *> *keyWidthArr;

@end

@implementation KWMineMoreProductsCell

- (void)setTopSpace:(CGFloat)topSpace {
    _topSpace = topSpace;
    [self.titleLb mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.contentView).offset(topSpace);
        make.centerX.equalTo(self.contentView);
        make.left.greaterThanOrEqualTo(self.contentView).offset(20);
        make.height.equalTo(@34);
        make.width.greaterThanOrEqualTo(@80);
    }];
}

-(void)setData:(KWMineMoreProductModel *)model {
    self.model = model;
    for (HomeFilterModel *type in self.model.keysArr) {
        if (type.selected) {
            self.currentKey = type;
        }
    }
    if (!self.currentKey) {
        self.currentKey = self.model.keysArr.firstObject;
    }
    self.titleLb.text = self.model.title;
    [self calulateItemWidth];
    [self.typeCollectV reloadData];
    [self.collectV reloadData];
}

-(void)calulateItemWidth {
    NSMutableArray<NSNumber *> *tempArr = [NSMutableArray array];
    NSDictionary *attribute = @{NSFontAttributeName: self.titleLb.font};
    for (HomeFilterModel *typeM in self.model.keysArr) {
        NSString *key = typeM.title;
        CGFloat wid = [key boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, 34) options:NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:attribute context:nil].size.width + 10;
//        CGFloat wid = [key widthForFont:[UIFont fontWithName:Rob_Regular size:12]]  + 10;
        [tempArr addObject:[NSNumber numberWithFloat:wid]];
    }
    int numLins = tempArr.count > 0 ? 1 : 0;
    CGFloat totalWid = 0;
    CGFloat maxWid = KScreenWidth - 20;
    int lineBeginI = 0;
    for (int i = 0; i < tempArr.count; i++) {
        CGFloat tempW = tempArr[i].floatValue;
        
        if ((tempW + totalWid + (i-lineBeginI)*10) > maxWid) {
            if (i>lineBeginI) {
                int num = i-lineBeginI;
                CGFloat elseSpace = (maxWid - totalWid - (num-1)*10)/num;
                for (int j = lineBeginI; j<i; j++) {
                    CGFloat tempSubW = tempArr[j].floatValue;
                    tempArr[j] = [NSNumber numberWithFloat: tempSubW + elseSpace];
                }
            }
            if (i == tempArr.count - 1) {
                tempArr[i] = [NSNumber numberWithFloat: maxWid];
                break;
            }
            totalWid = tempW;
            lineBeginI = i;
            numLins += 1;
        } else {
            totalWid += tempW;
            if (i == tempArr.count - 1) {
                if (tempArr.count>lineBeginI) {
                    int num = (int)(tempArr.count) - lineBeginI;
                    CGFloat elseSpace = (maxWid - totalWid- (num-1)*10)/num;
                    for (int j = lineBeginI; j<tempArr.count; j++) {
                        CGFloat tempSubW = tempArr[j].floatValue;
                        tempArr[j] = [NSNumber numberWithFloat: tempSubW + elseSpace];
                    }
                }
            }
        }
    }
    self.keyWidthArr = tempArr;
    @weakify(self);
    [self.typeCollectV mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(weak_self.titleLb.mas_bottom).offset(20);
        make.height.equalTo([NSNumber numberWithInteger:20 + numLins * 40 + (numLins-1)*10]);
        make.left.right.equalTo(weak_self.contentView);
    }];
}

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        [self loadSubV];
    }
    return self;
}

- (void)loadSubV {
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    self.contentView.backgroundColor = [UIColor colorWithHexString:@"#FFFFFF"];
    self.backgroundColor = [UIColor colorWithHexString:@"#FFFFFF"];
    
    
    [self.contentView addSubview:self.titleLb];
    [self.contentView addSubview:self.typeCollectV];
    [self.contentView addSubview:self.collectV];
    [self.contentView addSubview:self.offsetV];
    
        
    [self.titleLb mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.contentView).offset(20);
        make.centerX.equalTo(self.contentView);
        make.left.greaterThanOrEqualTo(self.contentView).offset(20);
        make.height.equalTo(@34);
        make.width.greaterThanOrEqualTo(@80);
    }];
    
    [self.typeCollectV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.titleLb.mas_bottom).offset(20);
        make.height.equalTo(@110);
        make.left.right.equalTo(self.contentView);
    }];
    
    CGFloat collH = (KScreenWidth-30)/2 + productHWithOutImg;
    [self.collectV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.contentView).offset(10);
        make.right.equalTo(self.contentView).offset(-10);
        make.height.equalTo([NSNumber numberWithFloat:collH]);
        make.top.equalTo(self.typeCollectV.mas_bottom).offset(10);
    }];
    [self.offsetV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(self.contentView);
        make.height.equalTo(@2);
        make.width.equalTo(@137);
        make.top.equalTo(self.collectV.mas_bottom).offset(20);
        make.bottom.equalTo(self.contentView).offset(-40);
    }];
    
   
}



- (UILabel *)titleLb {
    if (!_titleLb) {
        UILabel *lb = [[UILabel alloc] init];
        lb.textColor = [UIColor blackColor];
        lb.font = [UIFont fontWithName:Rob_Bold size:24];
        lb.textAlignment = NSTextAlignmentCenter;
        _titleLb = lb;
    }
    return _titleLb;
}


- (KWScrollOffsetView *)offsetV {
    if (!_offsetV) {
        KWScrollOffsetView *v = [[KWScrollOffsetView alloc] initWithFrame:CGRectMake(0, 0, 137, 2)];
        v.clipsToBounds = true;
        v.offWidth = 54;
        v.offset = 0;
        _offsetV = v;
    }
    return _offsetV;
}

-(UICollectionView *)collectV {
    if (!_collectV) {
        UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
        layout.sectionInset = UIEdgeInsetsMake(10, 0, 10, 0);
        layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        CGFloat collH = (KScreenWidth-30)/2 + 126;
        layout.itemSize = CGSizeMake((KScreenWidth - 30)/2, collH);
        UICollectionView *collV = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, KScreenWidth, collH) collectionViewLayout:layout];
        collV.backgroundColor = [UIColor whiteColor];
        collV.alwaysBounceHorizontal = true;
        collV.delegate = self;
        collV.dataSource = self;
        collV.showsHorizontalScrollIndicator = false;
        [collV registerClass:[HomeFlashDealSubCollectCell class] forCellWithReuseIdentifier:@"HomeFlashDealSubCollectCell"];
        _collectV = collV;
    }
    return  _collectV;
}

-(UICollectionView *)typeCollectV {
    if (!_typeCollectV) {
        UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
        layout.sectionInset = UIEdgeInsetsMake(10, 10, 10, 10);
        layout.scrollDirection = UICollectionViewScrollDirectionVertical;
        layout.itemSize = CGSizeMake(100, 40);
        UICollectionView *collV = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, KScreenWidth, 110) collectionViewLayout:layout];
        collV.scrollEnabled = false;
        collV.backgroundColor = [UIColor whiteColor];
        collV.alwaysBounceVertical = true;
        collV.delegate = self;
        collV.dataSource = self;
        collV.showsVerticalScrollIndicator = false;
        collV.showsHorizontalScrollIndicator = false;
        [collV registerClass:[KWMineMoreProductTypeCell class] forCellWithReuseIdentifier:@"KWMineMoreProductTypeCell"];
        _typeCollectV = collV;
    }
    return  _typeCollectV;
}


- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

// MARK: - UICollectionViewDelegate

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    if (self.offsetV.isHidden) {
        return;
    }
    CGFloat offset = scrollView.contentOffset.x;
    CGFloat itemWidth = (KScreenWidth-30)/2;
    NSArray<ASProductBaseModel*> *arr = self.currentKey.list;
    if (arr.count > 0) {
        CGFloat maxOffset = (arr.count * (itemWidth + 10) - 10 ) - (KScreenWidth-20);
        self.offsetV.offset = offset/maxOffset;
    }
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    if (collectionView == self.typeCollectV) {
        for (int i = 0; i < self.model.keysArr.count; i++) {
            HomeFilterModel *item = self.model.keysArr[i];
            item.selected = i == indexPath.row;
        }
        HomeFilterModel *key = self.model.keysArr[indexPath.row];
        self.currentKey = key;
        [self.typeCollectV reloadData];
        [self.collectV reloadData];
        return;
    }
    
    if (self.productClick) {
        NSArray<ASProductBaseModel*> *arr = self.currentKey.list;
        ASProductBaseModel *m = arr[indexPath.row];
        self.productClick(indexPath.row, m);
    }
    
}

// MARK: - UICollectionViewDataSource
- (nonnull __kindof UICollectionViewCell *)collectionView:(nonnull UICollectionView *)collectionView cellForItemAtIndexPath:(nonnull NSIndexPath *)indexPath {
    if (collectionView == self.typeCollectV) {
        KWMineMoreProductTypeCell *ce = [collectionView dequeueReusableCellWithReuseIdentifier:@"KWMineMoreProductTypeCell" forIndexPath:indexPath];
        HomeFilterModel *ti = self.model.keysArr[indexPath.row];
        [ce setTitle:ti.title isSelect:ti.selected];
        return ce;
    }
    HomeFlashDealSubCollectCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"HomeFlashDealSubCollectCell" forIndexPath:indexPath];
    NSArray<ASProductBaseModel*> *arr = self.currentKey.list;
    ASProductBaseModel *m = arr[indexPath.row];
    cell.model = m;
    return cell;
}

- (NSInteger)collectionView:(nonnull UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    if (collectionView == self.typeCollectV) {
        return self.model.keysArr.count;
    }
    NSArray<ASProductBaseModel*> *arr = self.currentKey.list;
    return arr.count;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    if (collectionView == self.typeCollectV) {
        CGFloat wid = self.keyWidthArr[indexPath.row].floatValue - 0.5;
        return CGSizeMake(wid, 40);
    }
    CGFloat marg = 10;
    CGFloat w = (KScreenWidth-3*marg)/2;
    CGFloat collH = (KScreenWidth-30)/2 + productHWithOutImg;
    return CGSizeMake(w, collH);
}

-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
    return 10;
}

-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
    return 10;
}

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    if (collectionView == self.typeCollectV) {
        return UIEdgeInsetsMake(10, 10, 10, 10);
    }
    return UIEdgeInsetsMake(20, 0, 10, 0);
}


@end