/*
 Copyright 2016 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 "RoomFilesSearchViewController.h"

#import "RoomSearchViewController.h"

#import "UIViewController+RiotSearch.h"

#import "FilesSearchCellData.h"
#import "FilesSearchTableViewCell.h"

#import "AppDelegate.h"

@interface RoomFilesSearchViewController ()
{
    // Observe kAppDelegateDidTapStatusBarNotification to handle tap on clock status bar.
    id kAppDelegateDidTapStatusBarNotificationObserver;
    
    // Observe kRiotDesignValuesDidChangeThemeNotification to handle user interface theme change.
    id kRiotDesignValuesDidChangeThemeNotificationObserver;
}

@end

@implementation RoomFilesSearchViewController

- (void)finalizeInit
{
    [super finalizeInit];
    
    // Setup `MXKViewControllerHandling` properties
    self.enableBarTintColorStatusChange = NO;
    self.rageShakeManager = [RageShakeManager sharedManager];
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Hide line separators of empty cells
    self.searchTableView.tableFooterView = [[UIView alloc] init];

    // Register cell class used to display the files search result
    [self.searchTableView registerClass:FilesSearchTableViewCell.class forCellReuseIdentifier:FilesSearchTableViewCell.defaultReuseIdentifier];
    
    self.searchTableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;
    
    // Observe user interface theme change.
    kRiotDesignValuesDidChangeThemeNotificationObserver = [[NSNotificationCenter defaultCenter] addObserverForName:kRiotDesignValuesDidChangeThemeNotification object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notif) {
        
        [self userInterfaceThemeDidChange];
        
    }];
    [self userInterfaceThemeDidChange];
}

- (void)userInterfaceThemeDidChange
{
    self.defaultBarTintColor = kRiotSecondaryBgColor;
    self.barTitleColor = kRiotPrimaryTextColor;
    self.activityIndicator.backgroundColor = kRiotOverlayColor;
    
    // Check the table view style to select its bg color.
    self.searchTableView.backgroundColor = ((self.searchTableView.style == UITableViewStylePlain) ? kRiotPrimaryBgColor : kRiotSecondaryBgColor);
    self.view.backgroundColor = self.searchTableView.backgroundColor;
    
    self.noResultsLabel.textColor = kRiotPrimaryBgColor;
    
    if (self.searchTableView.dataSource)
    {
        [self.searchTableView reloadData];
    }
}

- (UIStatusBarStyle)preferredStatusBarStyle
{
    return kRiotDesignStatusBarStyle;
}

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

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    // Screen tracking (via Google Analytics)
    id<GAITracker> tracker = [[GAI sharedInstance] defaultTracker];
    if (tracker)
    {
        [tracker set:kGAIScreenName value:@"RoomFilesSearch"];
        [tracker send:[[GAIDictionaryBuilder createScreenView] build]];
    }
    
    // Observe kAppDelegateDidTapStatusBarNotificationObserver.
    kAppDelegateDidTapStatusBarNotificationObserver = [[NSNotificationCenter defaultCenter] addObserverForName:kAppDelegateDidTapStatusBarNotification object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notif) {
        
        [self.searchTableView setContentOffset:CGPointMake(-self.searchTableView.contentInset.left, -self.searchTableView.contentInset.top) animated:YES];
        
    }];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
    
    if (kAppDelegateDidTapStatusBarNotificationObserver)
    {
        [[NSNotificationCenter defaultCenter] removeObserver:kAppDelegateDidTapStatusBarNotificationObserver];
        kAppDelegateDidTapStatusBarNotificationObserver = nil;
    }
}

#pragma mark - MXKDataSourceDelegate

- (Class<MXKCellRendering>)cellViewClassForCellData:(MXKCellData*)cellData
{
    return FilesSearchTableViewCell.class;
}

- (NSString *)cellReuseIdentifierForCellData:(MXKCellData*)cellData
{
    return FilesSearchTableViewCell.defaultReuseIdentifier;
}

#pragma mark - Override UITableView delegate

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

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Data in the cells are actually Vector RoomBubbleCellData
    FilesSearchCellData *cellData = (FilesSearchCellData*)[self.dataSource cellDataAtIndex:indexPath.row];
    _selectedEvent = cellData.searchResult.result;
    
    // Hide the keyboard handled by the search text input which belongs to RoomSearchViewController
    [((RoomSearchViewController*)self.parentViewController).searchBar resignFirstResponder];
    
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    // Make the RoomSearchViewController (that contains this VC) open the RoomViewController
    [self.parentViewController performSegueWithIdentifier:@"showTimeline" sender:self];
    
    // Reset the selected event. RoomSearchViewController got it when here
    _selectedEvent = nil;
}

@end