//
//  KBFindMiddleView.m
//  YouHuiProject
//
//  Created by xiaoxi on 2018/1/19.
//  Copyright © 2018年 kuxuan. All rights reserved.
//

#import "KBFindMiddleView.h"
#import "KBCollectionView.h"
#import "KBFindMiddleCollectionViewCell.h"

static NSString *const cellID = @"KBFindMiddleCollectionViewCell";

@interface KBFindMiddleView () <UICollectionViewDelegate,UICollectionViewDataSource>
@property (nonatomic, strong) UICollectionView *collectionView;
@end

@implementation KBFindMiddleView

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        self.backgroundColor = [UIColor whiteColor];
        
        [self initSubviews];
    }
    return self;
}

- (void)initSubviews {
    CALayer *lineLayer = [CALayer layer];
    lineLayer.backgroundColor = [UIColor YHColorWithHex:0xdddddd].CGColor;
    lineLayer.frame = CGRectMake(0, 0, kScreenWidth, 0.5);
    [self.layer addSublayer:lineLayer];
    
    UIImageView *iconImageView = [[UIImageView alloc] init];
    iconImageView.backgroundColor = [UIColor clearColor];
    iconImageView.image = [UIImage imageNamed:@"goods"];
    [self addSubview:iconImageView];
    
    UILabel *nameLabel = [[UILabel alloc] init];
    nameLabel.backgroundColor = [UIColor clearColor];
    nameLabel.text = @"商品分类";
    nameLabel.textColor = [UIColor YHColorWithHex:0x222222];
    nameLabel.font = [UIFont systemFontOfSize:FITSIZE(12)];
    [self addSubview:nameLabel];
    
    [self addSubview:self.collectionView];
    
    [iconImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self).offset(FITSIZE(15));
        make.centerY.equalTo(nameLabel);
        make.size.mas_equalTo(CGSizeMake(FITSIZE(12), FITSIZE(12)));
    }];
    
    [nameLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(iconImageView.mas_right).offset(FITSIZE(8));
        make.top.equalTo(self).offset(FITSIZE(16));
    }];
    
    [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self);
        make.top.equalTo(self).offset(FITSIZE(28));
        make.right.equalTo(self);
        make.bottom.equalTo(self);
    }];
}

- (void)setDataSource:(NSMutableArray *)dataSource {
    _dataSource = dataSource;
    [self.collectionView reloadData];
}

#pragma mark - collectionView

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
    return 1;
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return self.dataSource.count;
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    KBFindMiddleCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellID forIndexPath:indexPath];
    KBFindChannelModel *model = self.dataSource[indexPath.item];
    cell.model = model;
    return cell;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    if ([self.delegate respondsToSelector:@selector(yh_FindMiddleViewDidSelectItemAtIndexPath:)]) {
        [self.delegate yh_FindMiddleViewDidSelectItemAtIndexPath:indexPath];
    }
}

#pragma mark - lazy

- (UICollectionView *)collectionView {
    if (!_collectionView) {
        UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
        flowLayout.scrollDirection = UICollectionViewScrollDirectionVertical;
        flowLayout.itemSize = CGSizeMake(kScreenWidth/4, FITSIZE(66));
        flowLayout.minimumLineSpacing = FITSIZE(26);
        flowLayout.minimumInteritemSpacing = FITSIZE(0);
        flowLayout.sectionInset = UIEdgeInsetsMake(FITSIZE(26), 0, FITSIZE(16), 0);
        
        _collectionView = [[KBCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:flowLayout];
        _collectionView.scrollEnabled = NO;
        _collectionView.bounces = NO;
        _collectionView.showsVerticalScrollIndicator = NO;
        _collectionView.delegate = self;
        _collectionView.dataSource = self;
        [_collectionView registerClass:[KBFindMiddleCollectionViewCell class] forCellWithReuseIdentifier:cellID];
    }
    return _collectionView;
}

@end