//
//  MLNavigationController.m
//  MultiLayerNavigation
//
//  Created by Feather Chan on 13-4-12.
//  Copyright (c) 2013年 Feather Chan. All rights reserved.
//


#import "MLNavigationController.h"
#import <QuartzCore/QuartzCore.h>
#import "commentAndAskController.h"
#import "detailContentHomeController.h"
#import "DescView.h"
//#import "LCAlertView.h"

#define rectWidth  rect_screen.size.width

@interface MLNavigationController ()<UIAlertViewDelegate>
{
    CGPoint startTouch;
    
    UIImageView *lastScreenShotView;
    UIView *blackMask;
    
    float lastTouchX;
}

@property (nonatomic,retain) UIView *backgroundView;
@property (nonatomic,retain) NSMutableArray *screenShotsList;

@property (nonatomic,assign) BOOL isMoving;

@end

@implementation MLNavigationController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        self.screenShotsList = [[[NSMutableArray alloc]initWithCapacity:2]autorelease];
        self.canDragBack = YES;
        lastTouchX = 1000;
    }
    return self;
}

//- (id)initWithRootViewController:(UIViewController *)rootViewController {
//    self = [super initWithRootViewController:rootViewController];
//    if (self) {
//        
//        self.screenShotsList = [[[NSMutableArray alloc]initWithCapacity:2]autorelease];
//        self.canDragBack = YES;
//        lastTouchX = 1000;
//    }
//    return self;
//}

- (void)dealloc
{
    self.screenShotsList = nil;
    
    [self.backgroundView removeFromSuperview];
    self.backgroundView = nil;
    
    TPLOG(@"=====dealloc:%@=====",self.description);
    [super dealloc];
}

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view.
    
    // draw a shadow for navigation view to differ the layers obviously.
    // using this way to draw shadow will lead to the low performace
    // the best alternative way is making a shadow image.
    //
    self.view.layer.shadowColor = [[UIColor blackColor]CGColor];
    self.view.layer.shadowOffset = CGSizeMake(5, 5);
    self.view.layer.shadowRadius = 5;
    self.view.layer.shadowOpacity = 1;
    
    UIImageView *shadowImageView = [[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"leftside_shadow_bg"]]autorelease];
    shadowImageView.frame = CGRectMake(-10, 0, 10, TOP_VIEW.frame.size.height);
    [TOP_VIEW addSubview:shadowImageView];
    
    UIPanGestureRecognizer *recognizer = [[[UIPanGestureRecognizer alloc]initWithTarget:self
                                                                                 action:@selector(paningGestureReceive:)]autorelease];
    recognizer.delegate = self;
    [recognizer delaysTouchesBegan];
    [self.view addGestureRecognizer:recognizer];
}

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

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:(BOOL)animated];
    
    if (self.screenShotsList.count == 0) {
        
        UIImage *capturedImage = [self capture];
        
        if (capturedImage) {
            [self.screenShotsList addObject:capturedImage];
        }
    }
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [MobClick beginLogPageView:@"PageOne"];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [MobClick endLogPageView:@"PageOne"];
}

// override the push method
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if ([(TPWindow*)KEY_WINDOW respondsToSelector:@selector(closeAndSotoEmbeddedVideo)]) {
        [(TPWindow*)KEY_WINDOW closeAndSotoEmbeddedVideo];
        
        [(TPWindow*)KEY_WINDOW enabelEmbeddedVideoGesture:NO withVideoController:nil embeddedRect:CGRectZero];
    }
    /**
     * bug:6188(【倒退】个人主页：个人主页点击头像选择查看头像闪退)
     */
    
    self.canDragBack = YES;
    
    UIImage *capturedImage = [self capture];
    
    if (capturedImage) {
        [self.screenShotsList addObject:capturedImage];
    }
    
//    [[UIApplication sharedApplication] beginIgnoringInteractionEvents];
//    
//    if (isNotIOS8) {
//        if (self.viewControllers.count > 1) {
//            NSMutableArray *tempStack = [NSMutableArray arrayWithArray:self.viewControllers];
//            __block BOOL isHaveSame = NO;
//            __block NSInteger firstDetailConetentController;
//            [self.viewControllers enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
//                if ([obj isKindOfClass:[detailContentHomeController class]]) {
//                    firstDetailConetentController = idx;
//                    *stop = YES;
//                }
//            }];
//            
//            [self.viewControllers enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
//                if ([obj isKindOfClass:[viewController.class class]]) {
//                    if (![viewController isKindOfClass:[detailContentHomeController class]]
//                        || idx != firstDetailConetentController) {//4322: 【需求】相关新闻：相关新闻作为独立页面可以保存一层
//                        [tempStack removeObjectAtIndex:idx];
//                        [self.screenShotsList removeObjectAtIndex:idx+1];
//                        isHaveSame = YES;
//                    }
//                }
//            }];
//            if (isHaveSame) {
//                self.viewControllers = [NSArray arrayWithArray:tempStack];
//            }
//        }
//    }
    
    [super pushViewController:viewController animated:animated];
    
//    if (isIOS8) {
//        if (self.viewControllers.count > 1) {
//            NSMutableArray *tempStack = [NSMutableArray arrayWithArray:self.viewControllers];
//            __block BOOL isHaveSame = NO;
//            __block NSInteger firstDetailConetentController;
//            [self.viewControllers enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
//                if ([obj isKindOfClass:[detailContentHomeController class]]) {
//                    firstDetailConetentController = idx;
//                    *stop = YES;
//                }
//            }];
//            
//            [self.viewControllers enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
//                if (idx != self.viewControllers.count-1) {
//                    if ([obj isKindOfClass:[viewController.class class]]) {
//                        if ([obj isKindOfClass:[viewController.class class]]) {
//                            if (![viewController isKindOfClass:[detailContentHomeController class]]
//                                || idx != firstDetailConetentController) {//4322: 【需求】相关新闻：相关新闻作为独立页面可以保存一层
//                                [tempStack removeObjectAtIndex:idx];
//                                [self.screenShotsList removeObjectAtIndex:idx+1];
//                                isHaveSame = YES;
//                            }
//                        }
//                    }
//                }
//            }];
//            if (isHaveSame) {
//                self.viewControllers = [NSArray arrayWithArray:tempStack];
//            }
//        }
//    }
//    [[UIApplication sharedApplication] endIgnoringInteractionEvents];
}

// override the pop method
- (UIViewController *)popViewControllerAnimated:(BOOL)animated
{
    TPLOG(@"===========pop===========");
    [self.screenShotsList removeLastObject];
    
    [[NSNotificationCenter defaultCenter] postNotificationName:CONTENTDETAILPOPBACK object:nil];
    
    self.canDragBack = YES;
    return [super popViewControllerAnimated:animated];
}

- (UIViewController*)popBackWithTopSwipeGesture {
    [self.screenShotsList removeLastObject];
    
    self.canDragBack = YES;
    return [super popViewControllerAnimated:NO];
}

#pragma mark - Utility Methods -

// get the current view screen shot
- (UIImage *)capture
{
    if ([TOP_VIEW isKindOfClass:[UIImageView class]]) {
        return ((UIImageView*)TOP_VIEW).image;
    }
    UIGraphicsBeginImageContextWithOptions(TOP_VIEW.bounds.size, TOP_VIEW.opaque, 0.0);
    [TOP_VIEW.layer renderInContext:UIGraphicsGetCurrentContext()];
    
    UIImage * img = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    return img;
}

// set lastScreenShotView 's position and alpha when paning
- (void)moveViewWithX:(float)x panRec:(UIPanGestureRecognizer*)recoginzer
{

    if (lastTouchX == 1000) {
        lastTouchX = x;
    }
    
    x = x>rectWidth?rectWidth:x;
    
    x = x<0?0:x;
    
    
    if (x != rectWidth) {
        CGPoint offset = [recoginzer translationInView:KEY_WINDOW];
        CGRect shotFrame = lastScreenShotView.frame;
        
        if (x != 0) {
            CGRect frame = TOP_VIEW.frame;
            frame.origin.x = x;
            TOP_VIEW.frame = frame;
            shotFrame.origin.x = shotFrame.origin.x + offset.x/2;
        }else {
            CGRect frame = TOP_VIEW.frame;
            frame.origin.x = x;
            TOP_VIEW.frame = frame;
            if (lastTouchX < 0) {
                shotFrame.origin.x = shotFrame.origin.x - lastTouchX;
            }else {
                shotFrame.origin.x = shotFrame.origin.x - lastTouchX/2;
            }
        }
        lastScreenShotView.frame = shotFrame;
        blackMask.alpha = 0;
        lastTouchX = x;
        [recoginzer setTranslation:CGPointMake(0, 0) inView:KEY_WINDOW];
    }else {
        CGRect frame = TOP_VIEW.frame;
        frame.origin.x = x;
        TOP_VIEW.frame = frame;
        lastTouchX = 1000;
        lastScreenShotView.frame = CGRectMake(0, 0, blackMask.frame.size.width , blackMask.frame.size.height);
    }
    
}


#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    if (self.viewControllers.count <= 1 || !self.canDragBack) return NO;
    
    return YES;
}

#pragma mark - Gesture Recognizer -

- (void)paningGestureReceive:(UIPanGestureRecognizer *)recoginzer
{
    UIMenuController *menu = [UIMenuController sharedMenuController];
    if (menu.menuVisible) {
        [menu setMenuVisible:NO animated:YES];
    }
    // If the viewControllers has only one vc or disable the interaction, then return.
    if (self.viewControllers.count <= 1 || !self.canDragBack) return;
    
    // we get the touch position by the window's coordinate
    CGPoint touchPoint = [recoginzer locationInView:KEY_WINDOW];
    
    // begin paning, show the backgroundView(last screenshot),if not exist, create it.
    if (recoginzer.state == UIGestureRecognizerStateBegan) {
        
        _isMoving = YES;
        startTouch = touchPoint;
        
        if (!self.backgroundView)
        {
            CGRect frame = TOP_VIEW.frame;
            
            self.backgroundView = [[[UIView alloc]initWithFrame:CGRectMake(0, 0, frame.size.width , frame.size.height)]autorelease];
            [TOP_VIEW.superview insertSubview:self.backgroundView belowSubview:TOP_VIEW];
            
            blackMask = [[[UIView alloc]initWithFrame:CGRectMake(0, 0, frame.size.width , frame.size.height)]autorelease];
            blackMask.backgroundColor = [UIColor blackColor];
            [self.backgroundView addSubview:blackMask];
        }
        
        self.backgroundView.hidden = NO;
        
        if (lastScreenShotView) lastScreenShotView = nil;
        
        UIImage *lastScreenShot = [self.screenShotsList lastObject];
        lastScreenShotView = [[UIImageView alloc]initWithImage:lastScreenShot];
        [self.backgroundView insertSubview:lastScreenShotView belowSubview:blackMask];
        lastScreenShotView.frame = CGRectMake(-blackMask.frame.size.width/2, 0, blackMask.frame.size.width , blackMask.frame.size.height);
        //End paning, always check that if it should move right or move left automatically
    }else if (recoginzer.state == UIGestureRecognizerStateEnded){
        
        if (touchPoint.x - startTouch.x > 100)
        {
            [UIView animateWithDuration:0.3 animations:^{
                [self moveViewWithX:rectWidth panRec:recoginzer];
            } completion:^(BOOL finished) {
                
                [self popViewControllerAnimated:NO];
                
                CGRect frame = TOP_VIEW.frame;
                frame.origin.x = 0;
                TOP_VIEW.frame = frame;

                if (lastScreenShotView)  {
                    [self.backgroundView.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                        if ([obj isEqual:lastScreenShotView]) {
                            [lastScreenShotView removeFromSuperview];
                        }
                    }];
                }
                
                _isMoving = NO;
                self.backgroundView.hidden = YES;
            }];
        }
        else
        {
            [UIView animateWithDuration:0.3 animations:^{
                [self moveViewWithX:0 panRec:recoginzer];
            } completion:^(BOOL finished) {
                if (lastScreenShotView)  {
                    [self.backgroundView.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                        if ([obj isEqual:lastScreenShotView]) {
                            [lastScreenShotView removeFromSuperview];
                        }
                    }];
                }
                _isMoving = NO;
                self.backgroundView.hidden = YES;
            }];
            
        }
        return;
        
        // cancal panning, alway move to left side automatically
    }else if (recoginzer.state == UIGestureRecognizerStateCancelled){
        
        [UIView animateWithDuration:0.3 animations:^{
            [self moveViewWithX:0 panRec:recoginzer];
        } completion:^(BOOL finished) {
            _isMoving = NO;
            self.backgroundView.hidden = YES;
        }];
        
        return;
    }
    
    // it keeps move with touch
    if (_isMoving) {
        [self moveViewWithX:touchPoint.x - startTouch.x panRec:recoginzer];
    }
}

#pragma mark - rotate
- (BOOL)shouldAutorotate
{
    return [self.viewControllers.lastObject shouldAutorotate];
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations
{
    return [self.viewControllers.lastObject supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    if ([self.viewControllers.lastObject respondsToSelector:@selector(preferredInterfaceOrientationForPresentation)]) {
        return [self.viewControllers.lastObject preferredInterfaceOrientationForPresentation];
    }else {
        return UIInterfaceOrientationPortrait;
    }
}

@end