//
//  BackPanViewController.m
//  ThePaperDemo
//
//  Created by zhousan on 15/7/10.
//  Copyright (c) 2015年 scar1900. All rights reserved.
//

#import "BackPanViewController.h"

@interface BackPanViewController () <askDelegate,UIGestureRecognizerDelegate> {
    CGPoint startTouch;
    CGPoint askStartTouch;
}
@property (nonatomic,assign)BOOL   isMoving;
@property(nonatomic, strong)UIView *contentView;
@property(nonatomic, strong)UIView *askView;
@property(nonatomic, strong)UIView *backView;

@end

#define VIEWWIDTH CGRectGetWidth(self.view.bounds)

@implementation BackPanViewController
@synthesize panGestureRecognizer;

- (void)viewDidLoad {
    [super viewDidLoad];
    panGestureRecognizer = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];
    panGestureRecognizer.maximumNumberOfTouches = 1;
    panGestureRecognizer.delegate = self;
    [panGestureRecognizer delaysTouchesBegan];
    
    [self.view addGestureRecognizer:panGestureRecognizer];
    [self addChildViewController:self.fontVC];
    
    [self.view addSubview:self.backView];
    __weak typeof(self) weakSelf = self;
    [self.backView makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.view.left);
        make.top.equalTo(weakSelf.view.top);
        make.bottom.equalTo(weakSelf.view.bottom);
        make.width.mas_equalTo(2*rect_screen.size.width); 
    }];
    
}

#pragma mark - layout
- (void)layoutsubViews {
    __weak typeof(self) weakSelf = self;
    [self.backView addSubview:self.contentView];
    [_contentVC.webView makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.contentView.left);
        make.top.equalTo(weakSelf.naviBar.bottom);
        make.bottom.equalTo(weakSelf.contentView.bottom);
        make.right.mas_equalTo(weakSelf.view.right);
    }];
    [self.contentView makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.backView.left);
        make.top.equalTo(weakSelf.backView.top);
        make.bottom.equalTo(weakSelf.backView.bottom);
        make.right.mas_equalTo(weakSelf.view.right);
    }];

    [self.contentVC.view makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.backView);
        make.top.equalTo(weakSelf.backView);
        make.bottom.equalTo(weakSelf.backView);
        make.width.mas_equalTo(weakSelf.view.frame.size.width);
    }];

    [self.askVC.view makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(weakSelf.askView);
    }];
    
    [self.naviBar makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.view);
        make.top.equalTo(weakSelf.view);
        make.height.mas_equalTo(weakSelf.barHeight);
        make.width.equalTo(weakSelf.view.width);
    }];

    [self.backView addSubview:self.askView];
    [self.askView makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(weakSelf.contentView.right);
        make.top.equalTo(weakSelf.backView.top);
        make.bottom.equalTo(weakSelf.backView.bottom);
        make.width.mas_equalTo(weakSelf.view.frame.size.width);
    }];
    
    [self.fontVC.view makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(weakSelf.naviBar.bottom);
        make.left.equalTo(weakSelf.backView.left);
        make.right.equalTo(weakSelf.contentView.right);
        make.bottom.equalTo(weakSelf.contentView.bottom);
    }];
    self.fontVC.view.hidden = YES;
}

#pragma mark - Getter

- (UIView *)backView {
    if (!_backView) {
        _backView = [[UIView alloc]initWithFrame:CGRectZero];
        _backView.backgroundColor = [UIColor colorWithHexString:BackGroundColor];
    }
    return _backView;

}

- (UIView*)contentView {
    if (!_contentView) {
        
        _contentView = [[UIView alloc]initWithFrame:CGRectZero];
        self.contentVC.view.bounds = _contentView.bounds;
        [_contentView addSubview:self.contentVC.view];
        
        [self.naviBar removeFromSuperview];
        [self.contentView addSubview:self.fontVC.view];
        [_contentView addSubview:self.naviBar];
    }
    return _contentView;
}

- (UIView*)askView {
    if (!_askView) {
        _askView = [[UIView alloc]initWithFrame:CGRectZero];
        _askView.backgroundColor = [UIColor lightGrayColor];
        self.askVC.view.bounds = _askView.bounds;
        [_askView addSubview:self.askVC.view];
    }
    return _askView;
}

- (fontSizeSliderController *)fontVC {
    if (_fontVC == nil) {
        _fontVC = [[fontSizeSliderController alloc] init];
    }
    return _fontVC;
}

#pragma mark - Setteeer
- (void)setContentVC:(hotController *)contentVC {
    _contentVC = contentVC;
    [self addChildViewController:_contentVC];
    if (_askVC != nil) {
        [self layoutsubViews];
    }
}

- (void)setAskVC:(commentAndAskController *)askVC {
    _askVC = askVC;
    [self addChildViewController:_askVC];
    _askVC.delegate = self;
    if (_contentVC != nil) {
        [self layoutsubViews];
    }
}

#pragma mark - pan handler

- (void)pan:(UIPanGestureRecognizer*)panGesture {
    return;
//    if (self.isPlay == YES) {
//        return;
//    }
    CGPoint touchPoint = [panGesture locationInView:KEY_WINDOW];
    
    CGFloat offset = touchPoint.x - startTouch.x;
    
//    if (self.contentVC.tableView.isDragging) {
//        _isMoving = NO;
//        startTouch = touchPoint;
//        return;
//    }
    
    if (panGesture.state == UIGestureRecognizerStateBegan) {
        _isMoving = YES;
        UIMenuController *menu = [UIMenuController sharedMenuController];
        if (menu.menuVisible) {
            [menu setMenuVisible:NO animated:YES];
        }
        
        [_askView layer].shadowPath =[UIBezierPath bezierPathWithRect:_askView.bounds].CGPath;
        _askView.layer.shadowColor = [[UIColor blackColor]CGColor];
        _askView.layer.shadowOffset = CGSizeMake(5, 5);
        _askView.layer.shadowRadius = 5;
        _askView.layer.shadowOpacity = 1;
        //解决阴影卡顿
        /**
         * bug:5310(新闻详情页，左滑拉出互动列表，页面之间需要有阴影部分)
         */
        startTouch = touchPoint;
    }else if (panGesture.state == UIGestureRecognizerStateEnded) {
        TPLOG(@"end");
        if (offset < (0-VIEWWIDTH)/4)
        {
            [UIView animateWithDuration:0.3 animations:^{
                [self moveViewWithX:0-VIEWWIDTH panRec:panGesture];
            } completion:^(BOOL finished) {
                _isMoving = NO;
                panGestureRecognizer.enabled = NO;
//                self.contentVC.tableView.scrollEnabled = YES;
                //                ((MLNavigationController*)self.navigationController).canDragBack = NO;
            }];
        }
        else
        {
            [UIView animateWithDuration:0.3 animations:^{
                [self moveViewWithX:0 panRec:panGesture];
            } completion:^(BOOL finished) {
                _isMoving = NO;
//                self.contentVC.tableView.scrollEnabled = YES;
            }];
        }
        return;
    }else if (panGesture.state == UIGestureRecognizerStateCancelled) {

        [UIView animateWithDuration:0.3 animations:^{
            [self moveViewWithX:0 panRec:panGesture];
        } completion:^(BOOL finished) {
            _isMoving = NO;
//            self.contentVC.tableView.scrollEnabled = YES;
        }];
        return;
    }else if (panGesture.state == UIGestureRecognizerStateChanged) {
        TPLOG(@"begin");
//        self.contentVC.tableView.scrollEnabled = NO;
    }
    
    if (_isMoving) {
        [self moveViewWithX:offset panRec:panGesture];
    }
}

- (void)moveViewWithX:(float)x panRec:(UIPanGestureRecognizer*)recoginzer {

    x = x<(0-VIEWWIDTH)?(0-VIEWWIDTH):x;
    x=  x>0?0:x;
    
    if (x != (0-VIEWWIDTH)) {
        CGPoint offset = [recoginzer translationInView:KEY_WINDOW];
        if (x != 0) {
            CGRect viewFrame = self.contentView.frame;
            CGRect askFrame = self.askView.frame;
            
            askFrame.origin.x = askFrame.origin.x + offset.x;
            self.askView.frame = askFrame;
            viewFrame.origin.x = viewFrame.origin.x + offset.x/2;
            self.contentView.frame = viewFrame;
        }else {
            CGRect viewFrame = self.contentView.frame;
            CGRect askFrame = self.askView.frame;
            
            askFrame.origin.x = VIEWWIDTH;
            self.askView.frame = askFrame;
            viewFrame.origin.x = 0;
            self.contentView.frame = viewFrame;
        }
        [recoginzer setTranslation:CGPointMake(0, 0) inView:KEY_WINDOW];
    }else {
        CGRect viewFrame = self.contentView.frame;
        CGRect askFrame = self.askView.frame;
        
        askFrame.origin.x = 0;
        self.askView.frame = askFrame;
        viewFrame.origin.x = (0-VIEWWIDTH)/2;
        self.contentView.frame = viewFrame;
        [self moveCommentViewEnded];
    }
}

- (void)moveCommentViewEnded {
    
}

#pragma mark - askDelegate

- (void)removePanGesture {
    [self.view removeGestureRecognizer:panGestureRecognizer];
}

- (void)reAddpanGesture {
    [self.view addGestureRecognizer:panGestureRecognizer];
}

- (void)removeAskView:(UIPanGestureRecognizer*)panGesture {
    if (panGestureRecognizer.enabled) {
        return;
    }
    CGPoint touchPoint = [panGesture locationInView:KEY_WINDOW];
    CGFloat offset = touchPoint.x - askStartTouch.x;
    
    if (panGesture.state == UIGestureRecognizerStateBegan) {
        _isMoving = YES;
        UIMenuController *menu = [UIMenuController sharedMenuController];
        if (menu.menuVisible) {
            [menu setMenuVisible:NO animated:YES];
        }
        askStartTouch = touchPoint;
    }else if (panGesture.state == UIGestureRecognizerStateEnded) {
        
        if (offset > VIEWWIDTH/3)
        {
            [UIView animateWithDuration:0.3 animations:^{
                [self moveAskViewWithX:VIEWWIDTH panRec:panGesture];
            } completion:^(BOOL finished) {
                _isMoving = NO;
                panGestureRecognizer.enabled = YES;
                //                ((MLNavigationController*)self.navigationController).canDragBack = YES;
            }];
        }
        else
        {
            
            [UIView animateWithDuration:0.3 animations:^{
                [self moveAskViewWithX:0 panRec:panGesture];
            } completion:^(BOOL finished) {
                _isMoving = NO;
                panGestureRecognizer.enabled = NO;
                //                ((MLNavigationController*)self.navigationController).canDragBack = NO;
            }];
            
        }
        return;
    }else if (panGesture.state == UIGestureRecognizerStateCancelled) {
        
        [UIView animateWithDuration:0.3 animations:^{
            [self moveAskViewWithX:0 panRec:panGesture];
        } completion:^(BOOL finished) {
            _isMoving = NO;
            panGestureRecognizer.enabled = NO;
            //            ((MLNavigationController*)self.navigationController).canDragBack = NO;
            
        }];
        return;
    }
    
    if (_isMoving) {
        [self moveAskViewWithX:offset panRec:panGesture];
    }
}

- (void)removeButtonHandler {
    [self removeAskAndComment];
}

- (void)moveToAskAndComment {
    [UIView animateWithDuration:0.3 animations:^{
        CGRect viewFrame = self.contentView.frame;
        CGRect askFrame = self.askView.frame;
        
        askFrame.origin.x = 0;
        self.askView.frame = askFrame;
        viewFrame.origin.x = (0-VIEWWIDTH)/2;
        self.contentView.frame = viewFrame;
        
        
    } completion:^(BOOL finished) {
        panGestureRecognizer.enabled = NO;
        //            ((MLNavigationController*)self.navigationController).canDragBack = NO;
        _isMoving = NO;
    }];
}

- (void)removeAskAndComment {
    [UIView animateWithDuration:0.3 animations:^{
        CGRect viewFrame = self.contentView.frame;
        CGRect askFrame = self.askView.frame;
        
        askFrame.origin.x = VIEWWIDTH;
        self.askView.frame = askFrame;
        viewFrame.origin.x = 0;
        self.contentView.frame = viewFrame;
        
    } completion:^(BOOL finished) {
        panGestureRecognizer.enabled = YES;
        //        ((MLNavigationController*)self.navigationController).canDragBack = YES;
        _isMoving = NO;
    }];
}

- (void)moveAskViewWithX:(float)x panRec:(UIPanGestureRecognizer*)recoginzer {
    
    x = x>VIEWWIDTH?VIEWWIDTH:x;
    x=  x<0?0:x;
    
    if (x != VIEWWIDTH) {
        CGPoint offset = [recoginzer translationInView:KEY_WINDOW];
        if (x != 0) {
            CGRect viewFrame = self.contentView.frame;
            CGRect askFrame = self.askView.frame;
            
            askFrame.origin.x = askFrame.origin.x + offset.x;
            self.askView.frame = askFrame;
            viewFrame.origin.x = viewFrame.origin.x + offset.x/2;
            self.contentView.frame = viewFrame;
        }else {
            CGRect viewFrame = self.contentView.frame;
            CGRect askFrame = self.askView.frame;
            
            askFrame.origin.x = 0;
            self.askView.frame = askFrame;
            viewFrame.origin.x = 0-VIEWWIDTH/2;
            self.contentView.frame = viewFrame;
        }
        [recoginzer setTranslation:CGPointMake(0, 0) inView:KEY_WINDOW];
    }else {
        CGRect viewFrame = self.contentView.frame;
        CGRect askFrame = self.askView.frame;
        
        askFrame.origin.x = VIEWWIDTH;
        self.askView.frame = askFrame;
        viewFrame.origin.x = 0;
        self.contentView.frame = viewFrame;
        [self removeCommentViewEnded];
    }
}

- (void)removeCommentViewEnded {
    
}


#pragma mark UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

- (void)tapNaviBar:(id)sender {
    [self.contentVC.webView.scrollView setContentOffset:CGPointZero animated:YES];
}

- (void)commentSuccess {
    [self.askVC commentSuccess];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end