//
//  FKRecoUserRecoProductCell.m
//  FirstLink
//
//  Created by ascii on 16/9/25.
//  Copyright © 2016年 FirstLink. All rights reserved.
//

#import "FKRecoUserRecoProductCell.h"
#import "FKRecoUserCollectionViewCell.h"
#import "FKHotProductItem.h"
#import "FKRecommendViewModel.h"

@interface FKRecoUserRecoProductCell ()
<UICollectionViewDataSource, UICollectionViewDelegate>

@property (nonatomic, strong) UICollectionView *collectionView;
@property (nonatomic, strong) NSArray<FKHotProductItem *> *dataSource;

@end

@implementation FKRecoUserRecoProductCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        self.selectionStyle = UITableViewCellSelectionStyleNone;
        self.contentView.backgroundColor = [UIColor whiteColor];
        
        [self addAllSubviews];
    }
    return self;
}

- (void)fk_configWithViewModel:(FKRecommendViewModel *)viewModel indexPath:(NSIndexPath *)indexPath {
    if ([viewModel isKindOfClass:[FKRecommendViewModel class]]) {
        self.dataSource = viewModel.userRecoArea.dataArray;
        [self.collectionView reloadData];
    }
}

#pragma mark - UICollectionViewDataSource

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

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    FKRecoUserCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([FKRecoUserCollectionViewCell class])
                                                                                   forIndexPath:indexPath];
    FKHotProductItem *item = [self itemAtIndex:indexPath.row];
    if (item) {
        [cell.imageView setImageWithURL:item.picUrl cdnWidth:[FKRecoUserRecoProductCell imgLength:UISCREENWIDTH]];
        cell.titleLabel.text = item.title;
        cell.priceLabel.attributedText = [item priceAttributedString];
    }
    
    return cell;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    FKHotProductItem *item = [self itemAtIndex:indexPath.row];
    if (item) {
        if (self.delegate && [self.delegate respondsToSelector:@selector(recommendClickCell:atIndexPath:offset:)]) {
            [self.delegate recommendClickCell:self atIndexPath:self.indexPath offset:indexPath.row];
        }
    }
}


#pragma mark - Method

+ (CGFloat)height {
    return ([FKRecoUserRecoProductCell cellHeight:UISCREENWIDTH]);
}

+ (int)imgLength: (CGFloat)screenWidth {
    if (screenWidth <= 320) {
        return 100;
    }
    return 130;
}

+ (int)cellHeight:(CGFloat)screenWidth {
    return (10 + [FKRecoUserRecoProductCell imgLength:screenWidth] + 57);
}

- (FKHotProductItem *)itemAtIndex:(NSInteger)index {
    if (index >=0 && index < self.dataSource.count) {
        return self.dataSource[index];
    }
    return nil;
}

#pragma mark - Layout

- (void)addAllSubviews {
    [self.contentView addSubview:self.collectionView];
    [self.collectionView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.contentView);
    }];
}

#pragma mark - Property

- (UICollectionView *)collectionView {
    if (!_collectionView) {
        UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
        layout.headerReferenceSize = CGSizeMake(15, 40);
        layout.footerReferenceSize = CGSizeMake(10, 40);
        layout.minimumInteritemSpacing = 0;
        layout.minimumLineSpacing = 10;
        layout.itemSize = CGSizeMake([FKRecoUserRecoProductCell imgLength:UISCREENWIDTH], [FKRecoUserRecoProductCell cellHeight:UISCREENWIDTH]);
        layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
        
        _collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
        _collectionView.dataSource  = self;
        _collectionView.delegate    = self;
        _collectionView.backgroundColor = [UIColor whiteColor];
        _collectionView.alwaysBounceVertical = NO;
        _collectionView.showsHorizontalScrollIndicator = NO;
        _collectionView.scrollsToTop = NO;
        [_collectionView registerClass:[FKRecoUserCollectionViewCell class] forCellWithReuseIdentifier:NSStringFromClass([FKRecoUserCollectionViewCell class])];
    }
    return _collectionView;
}


@end