/*****************************************************************************
 * VLCOneDriveTableViewController.m
 * VLC for iOS
 *****************************************************************************
 * Copyright (c) 2014-2015 VideoLAN. All rights reserved.
 * $Id$
 *
 * Authors: Felix Paul Kühne <fkuehne # videolan.org>
 *
 * Refer to the COPYING file of the official project for license.
 *****************************************************************************/

#import "VLCOneDriveTableViewController.h"
#import "VLCOneDriveController.h"
#import "UIBarButtonItem+Theme.h"
#import "VLCCloudStorageTableViewCell.h"
#import "VLCAppDelegate.h"
#import "VLCOneDriveController.h"

@interface VLCOneDriveTableViewController () <UITableViewDataSource, UITableViewDelegate, VLCOneDriveControllerDelegate, VLCCloudStorageTableViewCell>
{
    UIBarButtonItem *_backButton;
    UIBarButtonItem *_logoutButton;

    UIActivityIndicatorView *_activityIndicator;

    VLCOneDriveController *_oneDriveController;
    NSString *_currentPath;
}
@end

@implementation VLCOneDriveTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    _oneDriveController = [VLCOneDriveController sharedInstance];
    _oneDriveController.delegate = self;

    self.modalPresentationStyle = UIModalPresentationFormSheet;

    self.navigationItem.title = @"OneDrive";

    _backButton = [UIBarButtonItem themedBackButtonWithTarget:self andSelector:@selector(goBack:)];
    self.navigationItem.leftBarButtonItem = _backButton;

    _logoutButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"BUTTON_LOGOUT", "") style:UIBarButtonItemStyleBordered target:self action:@selector(logout)];

    self.tableView.rowHeight = [VLCCloudStorageTableViewCell heightOfCell];
    self.tableView.separatorColor = [UIColor VLCDarkBackgroundColor];
    self.view.backgroundColor = [UIColor VLCDarkBackgroundColor];

    self.cloudStorageLogo = nil;
    if (!SYSTEM_RUNS_IOS7_OR_LATER) {
        self.flatLoginButton.hidden = YES;
        [self.loginButton setTitle:NSLocalizedString(@"DROPBOX_LOGIN", nil) forState:UIControlStateNormal];
    } else {
        self.loginButton.hidden = YES;
        [self.flatLoginButton setTitle:NSLocalizedString(@"DROPBOX_LOGIN", nil) forState:UIControlStateNormal];
    }

    _activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    _activityIndicator.hidesWhenStopped = YES;
    _activityIndicator.translatesAutoresizingMaskIntoConstraints = NO;
    [self.view addSubview:_activityIndicator];

    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:_activityIndicator attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0]];
    [self.view addConstraint:[NSLayoutConstraint constraintWithItem:_activityIndicator attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeCenterY multiplier:1.0 constant:0]];
}

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

    if (_oneDriveController.activeSession)
        [_oneDriveController login];

    if (!_oneDriveController.userAuthenticated)
        [self _showLoginDialog];

    [self.cloudStorageLogo sizeToFit];
    self.cloudStorageLogo.center = self.view.center;
}

#pragma mark - generic interface interaction

- (IBAction)goBack:(id)sender
{
    if (_oneDriveController.rootFolder != _oneDriveController.currentFolder) {
        _oneDriveController.currentFolder = _oneDriveController.currentFolder.parent;
        [_activityIndicator startAnimating];
        [_oneDriveController loadCurrentFolder];
    } else
        [self.navigationController popViewControllerAnimated:YES];
}

#pragma mark - table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return _oneDriveController.currentFolder.items.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"OneDriveCell";

    VLCCloudStorageTableViewCell *cell = (VLCCloudStorageTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
        cell = [VLCCloudStorageTableViewCell cellWithReuseIdentifier:CellIdentifier];

    cell.oneDriveFile = _oneDriveController.currentFolder.items[indexPath.row];
    cell.delegate = self;

    return cell;
}

#pragma mark - table view delegate

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    cell.backgroundColor = (indexPath.row % 2 == 0)? [UIColor blackColor]: [UIColor VLCDarkBackgroundColor];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    VLCOneDriveObject *selectedObject = _oneDriveController.currentFolder.items[indexPath.row];

    if (selectedObject.isFolder) {
        /* dive into sub folder */
        [_activityIndicator startAnimating];
        _oneDriveController.currentFolder = selectedObject;
        [_oneDriveController loadCurrentFolder];
    } else {
        /* stream file */
        NSURL *url = [NSURL URLWithString:selectedObject.downloadPath];
        VLCAppDelegate *appDelegate = (VLCAppDelegate *)[UIApplication sharedApplication].delegate;
        [appDelegate openMovieFromURL:url];
    }

    [self.tableView deselectRowAtIndexPath:indexPath animated:NO];
}

#pragma mark - login dialog

- (void)logout
{
    [_oneDriveController logout];
    [self updateViewAfterSessionChange];
}

- (void)_showLoginDialog
{
    self.loginToCloudStorageView.frame = self.tableView.frame;
    self.navigationItem.rightBarButtonItem = nil;
    [self.view addSubview:self.loginToCloudStorageView];
}

- (void)loginAction:(id)sender
{
    [_oneDriveController login];
}

#pragma mark - onedrive controller delegation

- (void)mediaListUpdated
{
    [_activityIndicator stopAnimating];

    [self.tableView reloadData];
}

- (void)sessionWasUpdated
{
    [self updateViewAfterSessionChange];
}

#pragma mark - app delegate

- (void)updateViewAfterSessionChange
{
    self.navigationItem.rightBarButtonItem = _logoutButton;
    if (![_oneDriveController userAuthenticated]) {
        [self _showLoginDialog];
        return;
    } else if (self.loginToCloudStorageView.superview) {
        [self.loginToCloudStorageView removeFromSuperview];
    }

    if (_oneDriveController.currentFolder != nil)
        [self mediaListUpdated];
    else {
        [_activityIndicator startAnimating];
        [_oneDriveController loadCurrentFolder];
    }
}

#pragma mark - cell delegationx

- (void)triggerDownloadForCell:(VLCCloudStorageTableViewCell *)cell
{
}

@end