FileListFileCell.m

//
//  FileListFileCell.m
//  Coding_iOS
//
//  Created by 王 原闯 on 14/10/29.
//  Copyright (c) 2014年 Coding. All rights reserved.
//

#define kFileListFileCell_IconWidth 45.0
#define kFileListFileCell_LeftPading (kPaddingLeftWidth +kFileListFileCell_IconWidth +20.0)
#define kFileListFileCell_TopPading 10.0

#import "FileListFileCell.h"
#import "AFURLSessionManager.h"
#import "Coding_FileManager.h"
#import "ASProgressPopUpView.h"
#import "YLImageView.h"


@interface FileListFileCell ()<ASProgressPopUpViewDelegate>
@property (strong, nonatomic) UIImageView *iconView, *shareLogoV;
@property (strong, nonatomic) UILabel *nameLabel, *infoLabel, *sizeLabel;
@property (strong, nonatomic) UIButton *stateButton;

@property (strong, nonatomic) ASProgressPopUpView *progressView;
@end

@implementation FileListFileCell
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
        if (!_iconView) {
            _iconView = [[YLImageView alloc] initWithFrame:CGRectMake(kPaddingLeftWidth, ([FileListFileCell cellHeight] - kFileListFileCell_IconWidth)/2, kFileListFileCell_IconWidth, kFileListFileCell_IconWidth)];
            _iconView.layer.masksToBounds = YES;
            _iconView.layer.cornerRadius = 2.0;
            _iconView.layer.borderWidth = 0.5;
            _iconView.layer.borderColor = kColorDDD.CGColor;
            [self.contentView addSubview:_iconView];
        }
        if (!_shareLogoV) {
            _shareLogoV = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon_file_share_logo"]];
            _shareLogoV.hidden = YES;
            [_iconView addSubview:_shareLogoV];
            [_shareLogoV mas_makeConstraints:^(MASConstraintMaker *make) {
                make.size.mas_equalTo(CGSizeMake(20, 20));
                make.top.right.equalTo(_iconView);
            }];
        }
        if (!_nameLabel) {
            _nameLabel = [[UILabel alloc] initWithFrame:CGRectMake(kFileListFileCell_LeftPading, kFileListFileCell_TopPading, (kScreen_Width - kFileListFileCell_LeftPading - 60), 25)];
            _nameLabel.textColor = kColor222;
            _nameLabel.font = [UIFont systemFontOfSize:16];
            [self.contentView addSubview:_nameLabel];
        }
        if (!_sizeLabel) {
            _sizeLabel = [[UILabel alloc] initWithFrame:CGRectMake(kFileListFileCell_LeftPading, ([FileListFileCell cellHeight]- 15)/2+3, (kScreen_Width - kFileListFileCell_LeftPading - 60), 15)];
            _sizeLabel.textColor = kColor999;
            _sizeLabel.font = [UIFont systemFontOfSize:12];
            [self.contentView addSubview:_sizeLabel];
        }
        if (!_infoLabel) {
            _infoLabel = [[UILabel alloc] initWithFrame:CGRectMake(kFileListFileCell_LeftPading, ([FileListFileCell cellHeight]- 15 - kFileListFileCell_TopPading), (kScreen_Width - kFileListFileCell_LeftPading - 60), 15)];
            _infoLabel.textColor = kColor999;
            _infoLabel.font = [UIFont systemFontOfSize:12];
            [self.contentView addSubview:_infoLabel];
        }
        if (!_progressView) {
            _progressView = [[ASProgressPopUpView alloc] initWithFrame:CGRectMake(kPaddingLeftWidth, [FileListFileCell cellHeight]-2.5, kScreen_Width- kPaddingLeftWidth, 2.0)];

            _progressView.popUpViewCornerRadius = 12.0;
            _progressView.delegate = self;
            _progressView.font = [UIFont fontWithName:@"Futura-CondensedExtraBold" size:12];
            [_progressView setTrackTintColor:[UIColor colorWithHexString:@"0xe6e6e6"]];
            _progressView.popUpViewAnimatedColors = @[kColorBrandBlue];
            _progressView.hidden = YES;
            [self.contentView addSubview:self.progressView];
        }
        if (!_stateButton) {
            _stateButton = [[UIButton alloc] initWithFrame:CGRectMake((kScreen_Width - 60), ([FileListFileCell cellHeight] - 30)/2, 50, 30)];
            [_stateButton doBorderWidth:1.0 color:kColorD8DDE4 cornerRadius:3];
            _stateButton.titleLabel.font = [UIFont systemFontOfSize:14];
            [_stateButton setTitleColor:kColorDark7 forState:UIControlStateNormal];
            [_stateButton addTarget:self action:@selector(clickedByUser) forControlEvents:UIControlEventTouchUpInside];
            [self.contentView addSubview:_stateButton];
        }
    }
    return self;
}

- (void)changeToState:(DownloadState)state{
    NSString *stateTitleStr;
    switch (state) {
        case DownloadStateDefault:
            stateTitleStr = @"下载";
            break;
        case DownloadStateDownloading:
            stateTitleStr = @"暂停";
            break;
        case DownloadStatePausing:
            stateTitleStr = @"继续";
            break;
        case DownloadStateDownloaded:
            stateTitleStr = @"查看";
            break;
        default:
            stateTitleStr = @"下载";
            break;
    }
    [self setBackgroundColor:(state == DownloadStateDownloaded)? [UIColor colorWithHexString:@"0x81BCFF" andAlpha:.1]:[UIColor whiteColor]];
    //addLineforPlainCell: 重置了 backgroundView，要改 layer 才行
    CALayer *bgLayer = self.backgroundView.layer.sublayers.firstObject;
    if (bgLayer && [bgLayer isKindOfClass:[CAShapeLayer class]]) {
        ((CAShapeLayer *)bgLayer).fillColor = self.backgroundColor.CGColor;
    }
    [self.progressView setHidden:!(state == DownloadStateDownloading || state == DownloadStatePausing)];
    
    [_stateButton setTitle:stateTitleStr forState:UIControlStateNormal];
}

- (void)layoutSubviews{
    [super layoutSubviews];
    if (!_file) {
        return;
    }
    _shareLogoV.hidden = !_file.share;
    _nameLabel.text = _file.name;
    _sizeLabel.text = [NSString sizeDisplayWithByte:_file.size.floatValue];
    _infoLabel.text = [NSString stringWithFormat:@"%@ 创建于 %@", _file.owner.name, [_file.created_at stringDisplay_HHmm]];
    if (_file.preview && _file.preview.length > 0) {
        [_iconView sd_setImageWithURL:[NSURL URLWithString:_file.preview]];
    }else{
        _iconView.image = [UIImage imageWithFileType:_file.fileType];
    }
}
+ (CGFloat)cellHeight{
    return 75.0;
}

- (void)setFile:(ProjectFile *)file{
    _file = file;
    if (!_file) {
        return;
    }
    Coding_DownloadTask *cDownloadTask = [_file cDownloadTask];
    [self updateProgress:cDownloadTask.progress];
    [self changeToState:_file.downloadState];
}

- (void)clickedByUser{
    Coding_FileManager *manager = [Coding_FileManager sharedManager];
    NSURL *fileUrl = _file.diskFileUrl;
    if (fileUrl) {//已经下载到本地了
        if (_showDiskFileBlock) {
            _showDiskFileBlock(fileUrl, _file);
        }
    }else{//要下载
        NSURLSessionDownloadTask *downloadTask;
        if (_file.cDownloadTask) {//暂停或者重新开始
            downloadTask = _file.cDownloadTask.task;
            switch (downloadTask.state) {
                case NSURLSessionTaskStateRunning:
                    [downloadTask suspend];
                    [self changeToState:DownloadStatePausing];

                    break;
                case NSURLSessionTaskStateSuspended:
                    [downloadTask resume];
                    [self changeToState:DownloadStateDownloading];
                    break;
                default:
                    break;
            }
        }else{//新建下载
            
            __weak typeof(self) weakSelf = self;
            Coding_DownloadTask *cDownloadTask = [manager addDownloadTaskForObj:self.file completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
                if (error) {
                    [weakSelf changeToState:DownloadStateDefault];
                    [NSObject showError:error];
                    DebugLog(@"ERROR:%@", error.description);
                }else{
                    [weakSelf changeToState:DownloadStateDownloaded];
                    DebugLog(@"File downloaded to: %@", filePath);
                }
            }];
            
            [self updateProgress:cDownloadTask.progress];
            [self changeToState:DownloadStateDownloading];
        }
    }
}
#pragma mark Progress
- (void)updateProgress:(NSProgress *)progress{
    if (progress) {
        if (_file.size.floatValue/1024/1024 > 5.0) {//大于5M的文件，下载时显示百分比
            [_progressView showPopUpViewAnimated:NO];
        }else{
            [_progressView hidePopUpViewAnimated:NO];
        }
        @weakify(self);
        [[RACObserve(progress, fractionCompleted)
          takeUntil:[RACSignal combineLatest:@[self.rac_prepareForReuseSignal, self.rac_willDeallocSignal]]]
         subscribeNext:^(NSNumber *fractionCompleted) {
             @strongify(self);
             dispatch_async(dispatch_get_main_queue(), ^{
                 [self updateCompleted:fractionCompleted.floatValue];
             });
         }];
    }else{
        _progressView.hidden = YES;
    }
}

- (void)updateCompleted:(CGFloat)fractionCompleted{
    //更新进度
    self.progressView.progress = fractionCompleted;
    if (ABS(fractionCompleted - 1.0) < 0.0001) {
        //已完成
        [self.progressView hidePopUpViewAnimated:YES];
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            [self changeToState:DownloadStateDownloaded];
            self.progressView.hidden = YES;
        });
    }else{
        self.progressView.hidden = NO;
    }
}

#pragma mark ASProgressPopUpViewDelegate
- (void)progressViewWillDisplayPopUpView:(ASProgressPopUpView *)progressView;
{
    [self.superview bringSubviewToFront:self];
}

- (void)progressViewDidHidePopUpView:(ASProgressPopUpView *)progressView{
    progressView.hidden = YES;
}

@end