YYXC_Student/jiaPei/VipModualrs/VipLesson/Controller/VipLessonContentViewController.m

//
//  VipLessonContentViewController.m
//  jiaPei
//
//  Created by 张嵘 on 2019/6/27.
//  Copyright © 2019 JCZ. All rights reserved.
//

#import "VipLessonContentViewController.h"
#import "VipLessonCollectionTypeOneCell.h"
#import "VipLessonCollectionTypeTwoCell.h"
#import "VipLessonCollectionTypeThreeCell.h"
#import "VipLessonCollectionReusableView.h"
#import "VipExamViewController.h"

@interface VipLessonContentViewController () <UICollectionViewDelegate, UICollectionViewDataSource>
@property (nonatomic, readwrite, strong) UICollectionView *collectionView;
@property (nonatomic, readwrite, copy) NSArray *headerTitlesArr;
@property (nonatomic, readwrite, copy) NSArray *secTwoImagesArr;
@property (nonatomic, readwrite, copy) NSArray *secTwoTitlesArr;
@property (nonatomic, readwrite, copy) NSArray *secThreeImagesArr;
@property (nonatomic, readwrite, copy) NSArray *secThreeTitlesArr;
@property (nonatomic, readwrite, copy) NSArray *secThreeSubTitlesArr;

@end

@implementation VipLessonContentViewController

#pragma mark - Life Cycle
- (void)viewDidLoad {
    [super viewDidLoad];
	[self.view addSubview:self.collectionView];
	[self.collectionView registerNib:[UINib nibWithNibName:@"VipLessonCollectionTypeOneCell" bundle:nil] forCellWithReuseIdentifier:@"VipLessonCollectionTypeOneCell"];
	[self.collectionView registerNib:[UINib nibWithNibName:@"VipLessonCollectionTypeTwoCell" bundle:nil] forCellWithReuseIdentifier:@"VipLessonCollectionTypeTwoCell"];
	[self.collectionView registerNib:[UINib nibWithNibName:@"VipLessonCollectionTypeThreeCell" bundle:nil] forCellWithReuseIdentifier:@"VipLessonCollectionTypeThreeCell"];
	[self.collectionView registerNib:[UINib nibWithNibName:@"VipLessonCollectionReusableView" bundle:nil] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"VipLessonCollectionReusableView"];
}

#pragma mark - UICollectionViewDelegate, UICollectionViewDataSource
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
	return 3;
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
	switch (section) {
		case 0:
			return 1;
		case 1:
			return 3;
		case 2:
			return 2;
			
		default:
			return 0;
	}
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
	switch (indexPath.section) {
		case 0:
			return CGSizeMake(kScreenWidth - (8 * 2), (kScreenWidth - (8 * 2)) * 0.25);
		case 1:
			return CGSizeMake((kScreenWidth - (8 * 4))/3.0, ((kScreenWidth - (8 * 4))/3.0) * (2.0 / 3.0));
		case 2:
			return CGSizeMake((kScreenWidth - (8 * 3))/2.0, (kScreenWidth - (8 * 3))/2.0 * (7.0 / 16.0));
			
		default:
			return CGSizeZero;
	}
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section {
	return CGSizeMake(kScreenWidth, 50);
}

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {
	if (kind == UICollectionElementKindSectionHeader) {
		VipLessonCollectionReusableView *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"VipLessonCollectionReusableView" forIndexPath:indexPath];
		headerView.rightTitleLabel.text = self.headerTitlesArr[indexPath.section];
		return headerView;
	} else {
		return nil;
	}
}

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
	switch (indexPath.section) {
		case 0: {
			VipLessonCollectionTypeOneCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"VipLessonCollectionTypeOneCell" forIndexPath:indexPath];
			return cell;
		}
		case 1: {
			VipLessonCollectionTypeTwoCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"VipLessonCollectionTypeTwoCell" forIndexPath:indexPath];
			cell.imageView.image = [UIImage imageNamed:self.secTwoImagesArr[indexPath.row]];
			cell.titleLabel.text = self.secTwoTitlesArr[indexPath.row];
			return cell;
		}
		case 2: {
			VipLessonCollectionTypeThreeCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"VipLessonCollectionTypeThreeCell" forIndexPath:indexPath];
			cell.imageView.image = [UIImage imageNamed:self.secThreeImagesArr[indexPath.row]];
			cell.titleLabel.text = self.secThreeTitlesArr[indexPath.row];
			cell.subTItleLabel.text = self.secThreeSubTitlesArr[indexPath.row];
			return cell;
		}
			
		default:
			return nil;
	}
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
	[collectionView deselectItemAtIndexPath:indexPath animated:YES];
	VipExamViewController *vc = [[VipExamViewController alloc] init];
	[self navPushHideTabbarToVC:vc];
}

/// collectinView section header 在高版本存在系统BUG，需要设置zPosition = 0.0
- (void)collectionView:(UICollectionView *)collectionView willDisplaySupplementaryView:(UICollectionReusableView *)view forElementKind:(NSString *)elementKind atIndexPath:(NSIndexPath *)indexPath {
	view.layer.zPosition = 0.0;
}


#pragma mark - Lazy Load
- (UICollectionView *)collectionView {
	if (!_collectionView) {
		UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
		layout.itemSize = CGSizeMake(100, 100);
		layout.sectionInset = UIEdgeInsetsMake(0, 8, 0, 8);
		layout.minimumLineSpacing = 8;
		layout.minimumInteritemSpacing = 8;
		_collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) collectionViewLayout:layout];
		_collectionView.dataSource = self;
		_collectionView.delegate = self;
		_collectionView.backgroundColor = [UIColor whiteColor];
	}
	return _collectionView;
}

- (NSArray *)headerTitlesArr {
	return @[@"01 速成课程", @"02 秒懂技巧", @"03 精选课程"];
}

- (NSArray *)secTwoImagesArr {
	return @[@"fast_voice_icon", @"fast_video_icon", @"fast_class_icon"];
}

- (NSArray *)secTwoTitlesArr {
	return @[@"语音技巧", @"视频技巧", @"考点归类速记"];
}

- (NSArray *)secThreeImagesArr {
	return @[@"threeDay", @"errorTopic"];
}

- (NSArray *)secThreeTitlesArr {
	return @[@"三天特训", @"易错题"];
}

- (NSArray *)secThreeSubTitlesArr {
	return @[@"冲刺100分", @"攻克难点"];
}


@end