/*
Copyright 2024 New Vector Ltd.
Copyright 2017 Vector Creations Ltd
Copyright 2016 OpenMarket Ltd
Copyright (c) 2021 BWI GmbH

SPDX-License-Identifier: AGPL-3.0-only
Please see LICENSE in the repository root for full details.
 */

#import "RoomFilesViewController.h"

#import "FilesSearchTableViewCell.h"

#import "GeneratedInterface-Swift.h"

#import "AttachmentsViewController.h"

@interface RoomFilesViewController ()
{
    /**
     Observe kThemeServiceDidChangeThemeNotification to handle user interface theme change.
     */
    id kThemeServiceDidChangeThemeNotificationObserver;
}

@end

@implementation RoomFilesViewController

#pragma mark -

- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil bundle:(nullable NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self)
    {
        self.autoJoinInvitedRoom = NO;
    }
    
    return self;
}

- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
        self.autoJoinInvitedRoom = NO;
    }
    
    return self;
}

#pragma mark -

- (void)finalizeInit
{
    [super finalizeInit];
    
    // Setup `MXKViewControllerHandling` properties
    self.enableBarTintColorStatusChange = NO;
    self.rageShakeManager = [RageShakeManager sharedManager];
    
    // Show / hide actions button in document preview according BuildSettings
    self.allowActionsInDocumentPreview = BWIBuildSettings.shared.messageDetailsAllowShare;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // Do not show toolbar
    [self setRoomInputToolbarViewClass:nil];
    
    // set the default extra
    [self setRoomActivitiesViewClass:nil];
    
    // Custom the attachmnet viewer
    [self setAttachmentsViewerClass:AttachmentsViewController.class];
    
    // Register first customized cell view classes used to render bubbles
    [self.bubblesTableView registerClass:FilesSearchTableViewCell.class forCellReuseIdentifier:FilesSearchTableViewCell.defaultReuseIdentifier];
    
    self.bubblesTableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
    
    // Hide line separators of empty cells
    self.bubblesTableView.tableFooterView = [[UIView alloc] init];
    
    [self setNavBarButtons];
    
    // Observe user interface theme change.
    kThemeServiceDidChangeThemeNotificationObserver = [[NSNotificationCenter defaultCenter] addObserverForName:kThemeServiceDidChangeThemeNotification object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notif) {
        
        [self userInterfaceThemeDidChange];
        
    }];
    [self userInterfaceThemeDidChange];
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    [self.screenTracker trackScreen];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    // Update the inputToolBar height (This will trigger a layout refresh)
    [UIView setAnimationsEnabled:NO];
    [self roomInputToolbarView:self.inputToolbarView heightDidChanged:0 completion:nil];
    [UIView setAnimationsEnabled:YES];
}

- (void)userInterfaceThemeDidChange
{
    [ThemeService.shared.theme applyStyleOnNavigationBar:self.navigationController.navigationBar];

    self.activityIndicator.backgroundColor = ThemeService.shared.theme.overlayBackgroundColor;
    
    // Check the table view style to select its bg color.
    self.bubblesTableView.backgroundColor = ((self.bubblesTableView.style == UITableViewStylePlain) ? ThemeService.shared.theme.backgroundColor : ThemeService.shared.theme.headerBackgroundColor);
    self.view.backgroundColor = self.bubblesTableView.backgroundColor;
    self.bubblesTableView.separatorColor = ThemeService.shared.theme.lineBreakColor;
    
    if (self.bubblesTableView.dataSource)
    {
        [self.bubblesTableView reloadData];
    }

    [self setNeedsStatusBarAppearanceUpdate];
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return ThemeService.shared.theme.statusBarStyle;
}

- (void)destroy
{
    [super destroy];
    
    if (kThemeServiceDidChangeThemeNotificationObserver)
    {
        [[NSNotificationCenter defaultCenter] removeObserver:kThemeServiceDidChangeThemeNotificationObserver];
        kThemeServiceDidChangeThemeNotificationObserver = nil;
    }
}

// This method is called when the viewcontroller is added or removed from a container view controller.
- (void)didMoveToParentViewController:(nullable UIViewController *)parent
{
    [super didMoveToParentViewController:parent];
    
    [self setNavBarButtons];
}

- (void)setNavBarButtons
{
    // Check whether the view controller is currently displayed inside a segmented view controller or not.
    UIViewController* topViewController = ((self.parentViewController) ? self.parentViewController : self);
    topViewController.navigationItem.rightBarButtonItem = nil; 
    
    if (self.showCancelBarButtonItem)
    {
        topViewController.navigationItem.leftBarButtonItem  = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(onCancel:)];
    }
    else
    {
        topViewController.navigationItem.leftBarButtonItem = nil;
    }
}

- (void)onCancel:(id)sender
{
    [self withdrawViewControllerAnimated:YES completion:nil];
}

#pragma mark - MXKDataSourceDelegate

- (Class<MXKCellRendering>)cellViewClassForCellData:(MXKCellData*)cellData
{
    Class cellViewClass = nil;
    
    // Sanity check
    if ([cellData conformsToProtocol:@protocol(MXKRoomBubbleCellDataStoring)])
    {
        id<MXKRoomBubbleCellDataStoring> bubbleData = (id<MXKRoomBubbleCellDataStoring>)cellData;
        
        // Select the suitable table view cell class
        if (bubbleData.attachment)
        {
            cellViewClass = FilesSearchTableViewCell.class;
        }
    }
    
    return cellViewClass;
}

- (NSString *)cellReuseIdentifierForCellData:(MXKCellData*)cellData
{
    Class class = [self cellViewClassForCellData:cellData];
    
    if ([class respondsToSelector:@selector(defaultReuseIdentifier)])
    {
        return [class defaultReuseIdentifier];
    }
    
    return nil;
}

#pragma mark - UITableView delegate

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath;
{
    cell.backgroundColor = ThemeService.shared.theme.backgroundColor;
    
    // Update the selected background view
    if (ThemeService.shared.theme.selectedBackgroundColor)
    {
        cell.selectedBackgroundView = [[UIView alloc] init];
        cell.selectedBackgroundView.backgroundColor = ThemeService.shared.theme.selectedBackgroundColor;
    }
    else
    {
        if (tableView.style == UITableViewStylePlain)
        {
            cell.selectedBackgroundView = nil;
        }
        else
        {
            cell.selectedBackgroundView.backgroundColor = nil;
        }
    }
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (tableView == self.bubblesTableView)
    {
        UITableViewCell *cell = [self.bubblesTableView cellForRowAtIndexPath:indexPath];
        [self showAttachmentInCell:cell];
        
        [tableView deselectRowAtIndexPath:indexPath animated:YES];
    }
}

@end