JSJP_Student/jiaPei/Modules/OtherModules/VideosModule/Controller/VideoDownLoadListVC.m

//
//  VideoDownLoadListVC.m
//  jiaPei
//
//  Created by 张嵘 on 2018/10/22.
//  Copyright © 2018 JCZ. All rights reserved.
//

#import "VideoDownLoadListVC.h"
#import "VideoPlayViewController.h"

static NSString *videoDownLoadListCellIdentifier = @"VideoDownLoadListCell";

@interface VideoDownLoadListVC () <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UISegmentedControl *segmentedControl;
@property (nonatomic, strong) UIBarButtonItem *rightItemBtn;
@property (nonatomic, strong) NSMutableArray *datas;
@property (nonatomic, strong) NSMutableArray *dataArr;
@end

@implementation VideoDownLoadListVC

#pragma mark - Life Circle
- (void)viewWillAppear:(BOOL)animated{
	[super viewWillAppear:animated];
	
	[self buildDatas];
	
	if(self.datas){
		self.tableView.editing = NO;
		[self.tableView reloadData];
	}
}

- (void)viewDidLoad {
    [super viewDidLoad];
	[self initUI];
}

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


#pragma mark - About UI
- (void)initUI {
	[self initBase];
	[self initTableView];
}

- (void)initBase {
	self.view.backgroundColor = backGroundColor;
	[self configNavigationBarFirstVC];
	self.navigationItem.titleView = self.segmentedControl;
	// 进度通知
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(downLoadProgress:) name:RQDownloadProgressNotification object:nil];
	// 状态改变通知
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(downLoadStateChange:) name:RQDownloadStateChangeNotification object:nil];
}

- (void)initTableView {
	if (@available(iOS 11.0, *)) {
		_tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
	}else {
		self.automaticallyAdjustsScrollViewInsets = NO;
	}
	_tableView.rowHeight = UITableViewAutomaticDimension;
	_tableView.estimatedRowHeight = ((KScreenwidth / 4.0) * (2 / 3) + 16);
	UIView *testView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, CGFLOAT_MIN)];
	self.tableView.tableHeaderView = testView;
}


#pragma mark - Request Data
- (void)buildDatas {
	[self getVideos];
//	self.datas = [NSMutableArray arrayWithArray:[kRQDownloadManager downloadModels]];
	
}

- (void)getVideos {
	if (![Util connectedToNetWork]) {
		showMsgUnconnect();
		_datas = [NSMutableArray arrayWithArray:[kRQDownloadDataBaseManager getAllDownloadedData]];
		[[[NSMutableArray arrayWithArray:[kRQDownloadDataBaseManager getAllDownloadedData]].rac_sequence.signal filter:^BOOL(RQDownloadModel *downloadModel) {
			return [downloadModel.subject integerValue] == self.videoListSegControlIndex;
		}] subscribeNext:^(RQDownloadModel *downloadModel) {
			[self.datas addObject:downloadModel];
		} completed:^{
			[_tableView reloadData];
		}];
		return;
	}
	
	NSMutableArray *aArray=[NSMutableArray array];
	[aArray addPro:@"chapterId"    Value:@""];
	[aArray addPro:@"subject"      Value:@""];
	[aArray addPro:@"isPage"       Value:@"0"];
	[aArray addPro:@"pageSize"     Value:@"0"];
	[aArray addPro:@"currentPage"  Value:@"0"];
	
	NSString* method = @"getVideos";
	ShowHUD();
	[jiaPeiManager requestAnythingWithURL:method array:aArray data:nil completion:^(NSDictionary *dict) {
		RemoveHUD();
		if (!dict) {
			ShowMsg(@"视频资源加载失败！");
			return ;
		}
		
		if ([dict[@"code"] isEqualToString:@"1"]) {
			ShowMsg(dict[@"body"]);
			return;
		}
		NSArray *dicDataArr = dict[@"body"];
		_datas = [NSMutableArray array];
		_dataArr = [NSMutableArray array];
		[[dicDataArr.rac_sequence.signal filter:^BOOL(NSDictionary *dic) {
			return [dic[@"subject"] integerValue] == self.videoListSegControlIndex + 1;
		}] subscribeNext:^(NSDictionary *dic) {
			[_dataArr addObject:dic];
			RQDownloadModel *downloadModel = [[RQDownloadModel alloc] init];
			downloadModel.videoId = dic[@"id"];
			downloadModel.subject = dic[@"subject"];
			downloadModel.title = dic[@"title"];
			downloadModel.urlString = dic[@"videoPath"];
			downloadModel.imageUrl = dic[@"image"];
			downloadModel.content = dic[@"content"];
			if ([kRQDownloadDataBaseManager getModelWithUrl:downloadModel.urlString]) {
				[_datas addObject:[kRQDownloadDataBaseManager getModelWithUrl:downloadModel.urlString]];
			}else {
				[_datas addObject:downloadModel];
			}
		} completed:^{
			dispatch_async(dispatch_get_main_queue(), ^{
				[_tableView reloadData];
			});
		}];
		
	}];
}



#pragma mark - Pravite Method

#pragma mark - Public Method

#pragma mark - Event response
- (void)segmentAction:(UISegmentedControl *)Seg {
	self.videoListSegControlIndex = Seg.selectedSegmentIndex;
	[self buildDatas];
}

#pragma mark - Delegate methods

#pragma mark - UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return self.datas.count;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
	[tableView registerNib:[UINib nibWithNibName:@"VideoDownLoadListCell" bundle:nil] forCellReuseIdentifier:@"VideoDownLoadListCell"];
	VideoDownLoadListCell *cell = [tableView dequeueReusableCellWithIdentifier:@"VideoDownLoadListCell"];
	if (!cell) {
		cell = [[VideoDownLoadListCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"VideoDownLoadListCell"];;
	}
	if (self.datas[indexPath.row]) {
		cell.model = self.datas[indexPath.row];
	}
	return cell;
}

#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	[tableView deselectRowAtIndexPath:indexPath animated:YES];
	RQDownloadModel *model = _datas[indexPath.row];
	VideoPlayViewController *vc = [[VideoPlayViewController alloc] init];
	vc.currentModel = model;
	[self navPushHideTabbarToVC:vc];
}

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
	return YES;
}

- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
	return UITableViewCellEditingStyleDelete;
}

- (NSArray *)tableView:(UITableView *)tableView editActionsForRowAtIndexPath:(NSIndexPath *)indexPath {
	UITableViewRowAction *action = [UITableViewRowAction rowActionWithStyle:UITableViewRowActionStyleDefault title:@"删除" handler:^(UITableViewRowAction *action, NSIndexPath *indexPath) {
		[tableView beginUpdates];
		RQDownloadModel *downloadModel = self.datas[indexPath.row];
		downloadModel = [kRQDownloadDataBaseManager getModelWithUrl:downloadModel.urlString];
		[kRQDownloadManager deleteTaskAndCache:downloadModel];
		[tableView endUpdates];
	}];
	return @[action];
}

#pragma mark - RQDownloadNotification
// 正在下载，进度回调
- (void)downLoadProgress:(NSNotification *)notification
{
	RQDownloadModel *downloadModel = notification.object;
	
	[self.datas enumerateObjectsUsingBlock:^(RQDownloadModel *model, NSUInteger idx, BOOL * _Nonnull stop) {
		if ([model.urlString isEqualToString:downloadModel.urlString]) {
			// 主线程更新cell进度
			dispatch_async(dispatch_get_main_queue(), ^{
				VideoDownLoadListCell *cell = [_tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:idx inSection:0]];
				[cell updateViewWithModel:downloadModel];
			});
			
			*stop = YES;
		}
	}];
}

// 状态改变
- (void)downLoadStateChange:(NSNotification *)notification
{
	RQDownloadModel *downloadModel = notification.object;
	
	[self.datas enumerateObjectsUsingBlock:^(RQDownloadModel *model, NSUInteger idx, BOOL * _Nonnull stop) {
		if ([model.urlString isEqualToString:downloadModel.urlString]) {
			// 更新数据源
			self.datas[idx] = downloadModel;
			
			// 主线程刷新cell
			dispatch_async(dispatch_get_main_queue(), ^{
				[_tableView reloadRowsAtIndexPaths:@[[NSIndexPath indexPathForRow:idx inSection:0]] withRowAnimation:UITableViewRowAnimationNone];
			});
			
			*stop = YES;
		}
	}];
}

- (void)dealloc
{
	[[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark - Getters/Setters/Lazy Loading
- (UISegmentedControl *)segmentedControl {
	if (!_segmentedControl) {
		_segmentedControl = [[UISegmentedControl alloc] initWithItems:@[@"科目一",@"科目二",@"科目三",@"科目四"]];
		_segmentedControl.frame = CGRectMake(0.0, 0.0, 100.0, 30.0);
		_segmentedControl.tintColor = [UIColor clearColor];
		NSDictionary* selectedTextAttributes = @{NSFontAttributeName:[UIFont boldSystemFontOfSize:16],
												 NSForegroundColorAttributeName: defGreen};
		[_segmentedControl setTitleTextAttributes:selectedTextAttributes forState:UIControlStateSelected];//设置文字属性
		NSDictionary* unselectedTextAttributes = @{NSFontAttributeName:[UIFont boldSystemFontOfSize:16],
												   NSForegroundColorAttributeName: contentTextColor};
		[_segmentedControl setTitleTextAttributes:unselectedTextAttributes forState:UIControlStateNormal];
		[_segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];  //添加委托方法
		_segmentedControl.selectedSegmentIndex = _videoListSegControlIndex;
	}
	return _segmentedControl;
}

- (NSMutableArray *)datas {
	if (!_datas) {
		_datas = [NSMutableArray array];
	}
	return _datas;
}

- (VideoListSegControlIndex)videoListSegControlIndex {
	if (!_videoListSegControlIndex) {
		_videoListSegControlIndex = VideoListSegControlIndex_ObjectOne;
	}
	return _videoListSegControlIndex;
}



@end