/*
 Copyright 2015 OpenMarket Ltd
 Copyright 2017 Vector Creations Ltd
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
 http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

#import "RoomInputToolbarView.h"

#import "RiotDesignValues.h"

#import "GBDeviceInfo_iOS.h"

#import "UINavigationController+Riot.h"

#import <MediaPlayer/MediaPlayer.h>

#import <Photos/Photos.h>

#import <MobileCoreServices/MobileCoreServices.h>

@interface RoomInputToolbarView()
{
    MediaPickerViewController *mediaPicker;

    // The call type selection (voice or video)
    MXKAlert *callActionSheet;
}

@end

@implementation RoomInputToolbarView

+ (UINib *)nib
{
    return [UINib nibWithNibName:NSStringFromClass([RoomInputToolbarView class])
                          bundle:[NSBundle bundleForClass:[RoomInputToolbarView class]]];
}

+ (instancetype)roomInputToolbarView
{
    if ([[self class] nib])
    {
        return [[[self class] nib] instantiateWithOwner:nil options:nil].firstObject;
    }
    else
    {
        return [[self alloc] init];
    }
}

- (void)awakeFromNib
{
    [super awakeFromNib];
    
    // Remove default toolbar background color
    self.backgroundColor = [UIColor clearColor];
    
    _supportCallOption = YES;
    
    self.rightInputToolbarButton.hidden = YES;
    
    [self.rightInputToolbarButton setTitleColor:kRiotColorGreen forState:UIControlStateNormal];
    [self.rightInputToolbarButton setTitleColor:kRiotColorGreen forState:UIControlStateHighlighted];
    
    self.separatorView.backgroundColor = kRiotColorSilver;
    
    // Custom the growingTextView display
    growingTextView.layer.cornerRadius = 0;
    growingTextView.layer.borderWidth = 0;
    growingTextView.backgroundColor = [UIColor clearColor];
    
    growingTextView.font = [UIFont systemFontOfSize:15];
    growingTextView.textColor = kRiotTextColorBlack;
    growingTextView.tintColor = kRiotColorGreen;
    
    self.isEncryptionEnabled = _isEncryptionEnabled;
}

- (void)setSupportCallOption:(BOOL)supportCallOption
{
    if (_supportCallOption != supportCallOption)
    {
        _supportCallOption = supportCallOption;
        
        if (supportCallOption)
        {
            self.voiceCallButtonWidthConstraint.constant = 46;
        }
        else
        {
            self.voiceCallButtonWidthConstraint.constant = 0;
        }
        
        [self setNeedsUpdateConstraints];
    }
}

- (void)setIsEncryptionEnabled:(BOOL)isEncryptionEnabled
{
    _isEncryptionEnabled = isEncryptionEnabled;
    
    // Consider the default placeholder
    NSString *placeholder= NSLocalizedStringFromTable(@"room_message_short_placeholder", @"Vector", nil);
    
    if (_isEncryptionEnabled)
    {
        self.encryptedRoomIcon.image = [UIImage imageNamed:@"e2e_verified"];
        
        // Check the device screen size before using large placeholder
        if ([GBDeviceInfo deviceInfo].family == GBDeviceFamilyiPad || [GBDeviceInfo deviceInfo].displayInfo.display >= GBDeviceDisplay4p7Inch)
        {
            placeholder = NSLocalizedStringFromTable(@"encrypted_room_message_placeholder", @"Vector", nil);
        }
    }
    else
    {
        self.encryptedRoomIcon.image = [UIImage imageNamed:@"e2e_unencrypted"];
        
        // Check the device screen size before using large placeholder
        if ([GBDeviceInfo deviceInfo].family == GBDeviceFamilyiPad || [GBDeviceInfo deviceInfo].displayInfo.display >= GBDeviceDisplay4p7Inch)
        {
            placeholder = NSLocalizedStringFromTable(@"room_message_placeholder", @"Vector", nil);
        }
    }
    
    
    self.placeholder = placeholder;
}

- (void)setActiveCall:(BOOL)activeCall
{
    if (_activeCall != activeCall)
    {
        _activeCall = activeCall;

        self.voiceCallButton.hidden = (_activeCall || !self.rightInputToolbarButton.hidden);
        self.hangupCallButton.hidden = (!_activeCall || !self.rightInputToolbarButton.hidden);
    }
}

#pragma mark - HPGrowingTextView delegate

//- (BOOL)growingTextViewShouldReturn:(HPGrowingTextView *)hpGrowingTextView
//{
//    // The return sends the message rather than giving a carriage return.
//    [self onTouchUpInside:self.rightInputToolbarButton];
//    
//    return NO;
//}

- (void)growingTextViewDidChange:(HPGrowingTextView *)hpGrowingTextView
{
    // Clean the carriage return added on return press
    if ([self.textMessage isEqualToString:@"\n"])
    {
        self.textMessage = nil;
    }
    
    [super growingTextViewDidChange:hpGrowingTextView];
    
    if (self.rightInputToolbarButton.isEnabled && self.rightInputToolbarButton.isHidden)
    {
        self.rightInputToolbarButton.hidden = NO;
        self.attachMediaButton.hidden = YES;
        self.voiceCallButton.hidden = YES;
        self.hangupCallButton.hidden = YES;
        
        self.messageComposerContainerTrailingConstraint.constant = self.frame.size.width - self.rightInputToolbarButton.frame.origin.x + 4;
    }
    else if (!self.rightInputToolbarButton.isEnabled && !self.rightInputToolbarButton.isHidden)
    {
        self.rightInputToolbarButton.hidden = YES;
        self.attachMediaButton.hidden = NO;
        self.voiceCallButton.hidden = _activeCall;
        self.hangupCallButton.hidden = !_activeCall;
        
        self.messageComposerContainerTrailingConstraint.constant = self.frame.size.width - self.attachMediaButton.frame.origin.x + 4;
    }
}

- (void)growingTextView:(HPGrowingTextView *)hpGrowingTextView willChangeHeight:(float)height
{
    // Update height of the main toolbar (message composer)
    CGFloat updatedHeight = height + (self.messageComposerContainerTopConstraint.constant + self.messageComposerContainerBottomConstraint.constant);
    
    if (updatedHeight < self.mainToolbarMinHeightConstraint.constant)
    {
        updatedHeight = self.mainToolbarMinHeightConstraint.constant;
    }
    
    self.mainToolbarHeightConstraint.constant = updatedHeight;
    
    // Update toolbar superview
    if ([self.delegate respondsToSelector:@selector(roomInputToolbarView:heightDidChanged:completion:)])
    {
        [self.delegate roomInputToolbarView:self heightDidChanged:updatedHeight completion:nil];
    }
}

#pragma mark - Override MXKRoomInputToolbarView

- (IBAction)onTouchUpInside:(UIButton*)button
{
    if (button == self.attachMediaButton)
    {
        // Check whether media attachment is supported
        if ([self.delegate respondsToSelector:@selector(roomInputToolbarView:presentViewController:)])
        {
            // MediaPickerViewController is based on the Photos framework. So it is available only for iOS 8 and later.
            Class PHAsset_class = NSClassFromString(@"PHAsset");
            if (PHAsset_class)
            {
                mediaPicker = [MediaPickerViewController mediaPickerViewController];
                mediaPicker.mediaTypes = @[(NSString *)kUTTypeImage, (NSString *)kUTTypeMovie];
                mediaPicker.delegate = self;
                UINavigationController *navigationController = [UINavigationController new];
                [navigationController pushViewController:mediaPicker animated:NO];
                
                [self.delegate roomInputToolbarView:self presentViewController:navigationController];
            }
            else
            {
                // We use UIImagePickerController by default for iOS < 8
                self.leftInputToolbarButton = self.attachMediaButton;
                [super onTouchUpInside:self.leftInputToolbarButton];
            }
        }
        else
        {
            NSLog(@"[RoomInputToolbarView] Attach media is not supported");
        }
    }
    else if (button == self.voiceCallButton)
    {
        if ([self.delegate respondsToSelector:@selector(roomInputToolbarView:placeCallWithVideo:)])
        {
            // Ask the user the kind of the call: voice or video?
            callActionSheet = [[MXKAlert alloc] initWithTitle:nil message:nil style:MXKAlertStyleActionSheet];

            __weak typeof(self) weakSelf = self;
            [callActionSheet addActionWithTitle:NSLocalizedStringFromTable(@"voice", @"Vector", nil) style:MXKAlertActionStyleDefault handler:^(MXKAlert *alert) {
                __strong __typeof(weakSelf)strongSelf = weakSelf;
                strongSelf->callActionSheet = nil;

                [strongSelf.delegate roomInputToolbarView:strongSelf placeCallWithVideo:NO];
            }];

            [callActionSheet addActionWithTitle:NSLocalizedStringFromTable(@"video", @"Vector", nil) style:MXKAlertActionStyleDefault handler:^(MXKAlert *alert) {
                __strong __typeof(weakSelf)strongSelf = weakSelf;
                strongSelf->callActionSheet = nil;

                [strongSelf.delegate roomInputToolbarView:strongSelf placeCallWithVideo:YES];
            }];

            callActionSheet.cancelButtonIndex = [callActionSheet addActionWithTitle:[NSBundle mxk_localizedStringForKey:@"cancel"] style:MXKAlertActionStyleCancel handler:^(MXKAlert *alert) {

                __strong __typeof(weakSelf)strongSelf = weakSelf;
                strongSelf->callActionSheet = nil;
            }];
            
            callActionSheet.sourceView = self.voiceCallButton;

            [callActionSheet showInViewController:self.window.rootViewController];
        }
    }
    else if (button == self.hangupCallButton)
    {
        if ([self.delegate respondsToSelector:@selector(roomInputToolbarViewHangupCall:)])
        {
            [self.delegate roomInputToolbarViewHangupCall:self];
        }
    }

    [super onTouchUpInside:button];
}


- (void)destroy
{
    [self dismissMediaPicker];

    if (callActionSheet)
    {
        [callActionSheet dismiss:NO];
        callActionSheet = nil;
    }
    
    [super destroy];
}

#pragma mark - MediaPickerViewController Delegate

- (void)mediaPickerController:(MediaPickerViewController *)mediaPickerController didSelectImage:(UIImage*)image withURL:(NSURL *)imageURL 
{
    [self dismissMediaPicker];
    
    [self sendSelectedImage:image withCompressionMode:MXKRoomInputToolbarCompressionModePrompt andLocalURL:imageURL];
}

- (void)mediaPickerController:(MediaPickerViewController *)mediaPickerController didSelectVideo:(NSURL*)videoURL
{
    [self dismissMediaPicker];
    
    BOOL isPhotoLibraryAsset = ![videoURL.path hasPrefix:NSTemporaryDirectory()];
    [self sendSelectedVideo:videoURL isPhotoLibraryAsset:isPhotoLibraryAsset];
}

- (void)mediaPickerController:(MediaPickerViewController *)mediaPickerController didSelectAssets:(NSArray<PHAsset*>*)assets
{
    [self dismissMediaPicker];

    [self sendSelectedAssets:assets withCompressionMode:MXKRoomInputToolbarCompressionModePrompt];
}

#pragma mark - Media picker handling

- (void)dismissMediaPicker
{
    if (mediaPicker)
    {
        [mediaPicker withdrawViewControllerAnimated:YES completion:nil];
        [mediaPicker destroy];
        mediaPicker = nil;
    }
}

#pragma mark - Clipboard - Handle image/data paste from general pasteboard

- (void)paste:(id)sender
{
    // TODO Custom here the validation screen for each available item
    
    [super paste:sender];
}

@end