fanli_zhihong/YouHuiProject/YouHui/Find/ViewController/LFWFindChann...

//
//  LFWFindChannelViewController.m
//  YouHuiProject
//
//  Created by xiaoxi on 2018/1/30.
//  Copyright © 2018年 kuxuan. All rights reserved.
//

#import "LFWFindChannelViewController.h"
#import "LFWFindChannelModel.h"
#import "LFWChildHeaderView.h"
#import "LFWTypeButtonHeader.h"
#import "XLPlainFlowLayout.h"
#import "LFWHeaderReusableView.h"
#import "LFWGoodCollectionCell.h"
#import "LFWChildCategoryModel.h"
#import "LFWChildGoodModel.h"
#import "LFWItemListViewController.h"
#import "LFWGoodListViewController.h"
#import "LFWGoodDetailViewController.h"

static NSString *headerID = @"headerID";
static NSString *cellID = @"LFWGoodCollectionCell";

@interface LFWFindChannelViewController () <UICollectionViewDelegate,UICollectionViewDataSource,YHTypeReusableDelegate,YHChildHeaderViewDelegate>{
    NSInteger _page;
    NSInteger _type;
    BOOL _changeType;
}

@property (nonatomic, strong) UICollectionView *collectionView;
@property (nonatomic, strong) LFWChildHeaderView *headerView;
@property (nonatomic, strong) LFWHeaderReusableView *reusableView;
@property (nonatomic, strong) NSArray *categoryArr;
@property (nonatomic, strong) NSMutableArray *goodsArr;

@end

@implementation LFWFindChannelViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self initNavBar];
    [self configParam];
    [self configCollectionView];
    [self loadTopCategoryList];
    [self loadCategoryGoodsList];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (void)initNavBar {
    [self.navigationBar setBackButtonWithTarget:self selector:@selector(backAction)];
    [self.navigationBar setNavTitle:self.model.name];
//    UIButton *search = [UIButton buttonWithType:UIButtonTypeCustom];
//    search.frame = CGRectMake(0, 0, FITSIZE(22), FITSIZE(22));
//    search.backgroundColor = [UIColor clearColor];
//    [search setBackgroundImage:[UIImage imageNamed:@"search_gray"] forState:UIControlStateNormal];
//    [self.navigationBar setCustomRightButtons:@[search]];
    [self.navigationBar setShowNavigationBarBottomLine:YES];
}

- (void)backAction {
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)configParam {
    _page = 1;
    _type = 1; //默认请求推荐的数据
}

- (void)configCollectionView {
    XLPlainFlowLayout *flowLayout = [[XLPlainFlowLayout alloc]init];
    flowLayout.naviHeight = 0;
    CGFloat width = (SCREEN_WIDTH-5)/2;
    CGFloat height = width + 102;
    flowLayout.itemSize = CGSizeMake(width, height);
    flowLayout.minimumLineSpacing = 0;
    flowLayout.minimumInteritemSpacing = 0;
    flowLayout.headerReferenceSize = CGSizeMake(0, 0);
    self.collectionView = [[UICollectionView alloc]initWithFrame:CGRectMake(0, NavBarHeight, SCREEN_WIDTH, kScreenHeight-NavBarHeight) collectionViewLayout:flowLayout];
    [self.collectionView registerClass:[LFWGoodCollectionCell class] forCellWithReuseIdentifier:cellID];
    [self.collectionView registerClass:[LFWHeaderReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader  withReuseIdentifier:headerID];
    self.collectionView.backgroundColor = [UIColor whiteColor];
    self.collectionView.showsVerticalScrollIndicator = NO;
    self.collectionView.delegate = self;
    self.collectionView.dataSource = self;
    self.collectionView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
        [self loadMoreData];
    }];
    [self.view addSubview: self.collectionView];
    
}

- (void)creatTopHeaderView:(NSArray *)array {
    self.headerView = [[LFWChildHeaderView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 200) withTypeArr:array delegete:self];
    self.collectionView.contentInset = UIEdgeInsetsMake(self.headerView.height, 0, 0, 0);
    self.headerView.y = -self.headerView.height;
    [self.collectionView addSubview:self.headerView];
    [self.collectionView scrollToTop];
}

#pragma mark ====================== Load Data ==========

/**
 加载上部分类数据
 */
- (void)loadTopCategoryList {
    
    NSDictionary *para = @{@"pid":self.model.Id};
    [LFWHttp post:CategorySubList params:para success:^(id json) {
        self.categoryArr = [NSArray yy_modelArrayWithClass:[LFWChildCategoryModel class] json:json[@"data"]];
        [self creatTopHeaderView:self.categoryArr];
        
    } failure:^(NSError *error) {
        
    }];
}


/**
 加载下部商品列表
 */
- (void)loadCategoryGoodsList {
    NSDictionary *para = @{@"page":@(_page),@"scid":self.model.Id,@"type":@(_type)};
    [LFWHttp post:CategoryGoods params:para success:^(id json) {
        if (_changeType) {
            [self.goodsArr removeAllObjects];
        }
        NSArray *list = [NSArray yy_modelArrayWithClass:[LFWChildGoodModel class] json:json[@"data"]];
        [self.goodsArr addObjectsFromArray:list];
        [self.collectionView reloadData];
        
        [self.collectionView.mj_footer endRefreshing];
    } failure:^(NSError *error) {
        [self.collectionView.mj_footer endRefreshing];
    }];
}


/**
 上拉加载
 */
- (void)loadMoreData {
    _page++;
    _changeType = NO;
    [self loadCategoryGoodsList];
}

#pragma mark ============ YHChildHeaderViewDelegate ==========

/**
 点击头部分类列表
 */
- (void)YHChildHeaderViewDidSelectedIndex:(NSInteger)index {
    LFWChildCategoryModel *model = self.categoryArr[index];
    LFWItemListViewController *itemList = [[LFWItemListViewController alloc] init];
    itemList.model = model;
    [self.navigationController pushViewController:itemList animated:YES];
    
}


#pragma mark ============ YHTypeReusableDelegate ==========

/**
 推荐 最新 销量
 */
- (void)YHTypeReusableViewDidSelectedIndex:(NSInteger)index {
    _type = index + 1;
    _changeType = YES;
    [self loadCategoryGoodsList];
    [self.collectionView setContentOffset:CGPointMake(0, 0) animated:YES];
}


#pragma mark ============ UICollectionView Delegate &&  DataSource ==========
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return self.goodsArr.count;
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section
{
    return CGSizeMake(0, 40);
}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForFooterInSection:(NSInteger)section
{
    return CGSizeMake(0, 0);
}


- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    LFWGoodCollectionCell *cell = [self.collectionView dequeueReusableCellWithReuseIdentifier:cellID forIndexPath:indexPath];
    LFWChildGoodModel *model = self.goodsArr[indexPath.row];
    cell.model = model;
    return cell;
}


- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {
    if (kind == UICollectionElementKindSectionHeader) {
        if (!self.reusableView) {
            self.reusableView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:headerID forIndexPath:indexPath];
            self.reusableView.delegate = self;
        }
        return self.reusableView;
        
    }
    return nil;
}


- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    
    LFWChildGoodModel *model = self.goodsArr[indexPath.row];
    if ([model.type isEqualToString:@"1"]) {
        //专场
        LFWGoodListViewController *list = [[LFWGoodListViewController alloc] init];
        list.cate_id = model.goods_id;
        list.topRequest = 1;
        [self.navigationController pushViewController:list animated:YES];
    }else {
        //详情
        LFWGoodDetailViewController *detailVC = [[LFWGoodDetailViewController alloc] init];
        detailVC.goods_id = model.goods_id;
        [self.navigationController pushViewController:detailVC animated:YES];
    }
    
}



#pragma mark -------------
- (NSMutableArray *)goodsArr {
    if (!_goodsArr) {
        _goodsArr = [NSMutableArray array];
    }
    return _goodsArr;
}

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@end