/*****************************************************************************
 * VLCNetworkLoginViewController.m
 * VLC for iOS
 *****************************************************************************
 * Copyright (c) 2013-2015 VideoLAN. All rights reserved.
 * $Id$
 *
 * Authors: Felix Paul Kühne <fkuehne # videolan.org>
 *          Pierre SAGASPE <pierre.sagaspe # me.com>
 *          Vincent L. Cone <vincent.l.cone # tuta.io>
 *
 * Refer to the COPYING file of the official project for license.
 *****************************************************************************/

#import "VLCNetworkLoginViewController.h"
#import "VLCPlexWebAPI.h"
#import <XKKeychain/XKKeychainGenericPasswordItem.h>

#import "VLCNetworkLoginDataSource.h"
#import "VLCNetworkLoginDataSourceProtocol.h"
#import "VLCNetworkLoginDataSourceLogin.h"
#import "VLCNetworkLoginDataSourceSavedLogins.h"
#import "VLCNetworkServerLoginInformation.h"


// for protocol identifier
#import "VLCLocalNetworkServiceBrowserPlex.h"
#import "VLCLocalNetworkServiceBrowserFTP.h"
#import "VLCLocalNetworkServiceBrowserDSM.h"


@interface VLCNetworkLoginViewController () <UITextFieldDelegate, VLCNetworkLoginDataSourceProtocolDelegate, VLCNetworkLoginDataSourceLoginDelegate, VLCNetworkLoginDataSourceSavedLoginsDelegate>
{
    UIActivityIndicatorView *_activityIndicator;
    UIView *_activityBackgroundView;
}

@property (nonatomic) VLCNetworkLoginDataSource *dataSource;
@property (nonatomic) VLCNetworkLoginDataSourceProtocol *protocolDataSource;
@property (nonatomic) VLCNetworkLoginDataSourceLogin *loginDataSource;
@property (nonatomic) VLCNetworkLoginDataSourceSavedLogins *savedLoginsDataSource;

@property (nonatomic, weak) IBOutlet UITableView *tableView;

@end

@implementation VLCNetworkLoginViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.modalPresentationStyle = UIModalPresentationFormSheet;

    self.title = NSLocalizedString(@"CONNECT_TO_SERVER", nil);

    self.tableView.backgroundColor = [UIColor VLCDarkBackgroundColor];
    self.tableView.separatorColor = [UIColor VLCLightTextColor];

    self.protocolDataSource = [[VLCNetworkLoginDataSourceProtocol alloc] init];
    self.protocolDataSource.delegate = self;
    self.protocolDataSource.protocol = [self protocolForProtocolIdentifier:self.loginInformation.protocolIdentifier];
    self.loginDataSource = [[VLCNetworkLoginDataSourceLogin alloc] init];
    self.loginDataSource.loginInformation = self.loginInformation;
    self.loginDataSource.delegate = self;
    self.savedLoginsDataSource = [[VLCNetworkLoginDataSourceSavedLogins alloc] init];
    self.savedLoginsDataSource.delegate = self;

    VLCNetworkLoginDataSource *dataSource = [[VLCNetworkLoginDataSource alloc] init];
    dataSource.dataSources = @[self.protocolDataSource, self.loginDataSource, self.savedLoginsDataSource];
    [dataSource configureWithTableView:self.tableView];
    self.dataSource = dataSource;

    _activityBackgroundView = [[UIView alloc] initWithFrame:self.view.frame];
    _activityBackgroundView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    _activityBackgroundView.hidden = YES;
    _activityBackgroundView.backgroundColor = [UIColor VLCDarkBackgroundColor];
    [self.view addSubview:_activityBackgroundView];

    _activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    _activityIndicator.hidesWhenStopped = YES;
    _activityIndicator.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;

    [_activityBackgroundView addSubview:_activityIndicator];
    [_activityIndicator setCenter:_activityBackgroundView.center];

//    self.edgesForExtendedLayout = UIRectEdgeNone;
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

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

#pragma mark - PLEX stuff

// TODO: can we move this Plex stuff to the Plex server browser?

- (void)_plexLogin
{
    VLCPlexWebAPI *PlexWebAPI = [[VLCPlexWebAPI alloc] init];
    NSString *auth = [PlexWebAPI PlexAuthentification:self.loginInformation.username password:self.loginInformation.password];

    [self performSelectorOnMainThread:@selector(_stopActivity) withObject:nil waitUntilDone:YES];

    if ([auth isEqualToString:@""]) {
        VLCAlertView *alertView = [[VLCAlertView alloc] initWithTitle:NSLocalizedString(@"PLEX_ERROR_ACCOUNT", nil)
                                                              message:NSLocalizedString(@"PLEX_CHECK_ACCOUNT", nil)
                                                    cancelButtonTitle:NSLocalizedString(@"BUTTON_OK", nil)
                                                    otherButtonTitles:nil];
        [alertView performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:NO];
        return;
    }

    [self.delegate loginWithLoginViewController:self loginInfo:self.loginInformation];
}

- (void)_stopActivity
{
    _activityBackgroundView.hidden = YES;
    [_activityIndicator stopAnimating];
}

#pragma mark -

- (VLCServerProtocol)protocolForProtocolIdentifier:(NSString *)protocolIdentifier
{
    VLCServerProtocol protocol = VLCServerProtocolUndefined;
    if ([protocolIdentifier isEqualToString:VLCNetworkServerProtocolIdentifierFTP]) {
        protocol = VLCServerProtocolFTP;
    } else if ([protocolIdentifier isEqualToString:VLCNetworkServerProtocolIdentifierSMB]) {
        protocol = VLCServerProtocolSMB;
    } else if ([protocolIdentifier isEqualToString:VLCNetworkServerProtocolIdentifierPlex]) {
        protocol = VLCServerProtocolPLEX;
    }
    return protocol;
}

- (nullable NSString *)protocolIdentifierForProtocol:(VLCServerProtocol)protocol
{
    NSString *protocolIdentifier = nil;
    switch (protocol) {
        case VLCServerProtocolFTP:
        {
            protocolIdentifier = VLCNetworkServerProtocolIdentifierFTP;
            break;
        }
        case VLCServerProtocolPLEX:
        {
            protocolIdentifier = VLCNetworkServerProtocolIdentifierPlex;
            break;
        }
        case VLCServerProtocolSMB:
        {
            protocolIdentifier = VLCNetworkServerProtocolIdentifierSMB;
        }
        default:
            break;
    }
    return protocolIdentifier;
}

- (void)setLoginInformation:(VLCNetworkServerLoginInformation *)loginInformation
{
    _loginInformation = loginInformation;
    self.protocolDataSource.protocol = [self protocolForProtocolIdentifier:loginInformation.protocolIdentifier];
    self.loginDataSource.loginInformation = loginInformation;
}

#pragma mark - VLCNetworkLoginDataSourceProtocolDelegate
- (void)protocolDidChange:(VLCNetworkLoginDataSourceProtocol *)protocolSection
{
    NSString *protocolIdentifier = [self protocolIdentifierForProtocol:protocolSection.protocol];
    VLCNetworkServerLoginInformation *login = [VLCNetworkServerLoginInformation newLoginInformationForProtocol:protocolIdentifier];
    login.address = self.loginInformation.address;
    login.username = self.loginInformation.username;
    login.password = self.loginInformation.password;
    self.loginDataSource.loginInformation = login;
}

#pragma mark - VLCNetworkLoginDataSourceLoginDelegate

- (void)saveLoginDataSource:(VLCNetworkLoginDataSourceLogin *)dataSource
{
    if (!self.protocolSelected)
        return;

    VLCNetworkServerLoginInformation *login = dataSource.loginInformation;
    // TODO: move somewere else?
    // Normalize Plex login
    if ([login.protocolIdentifier isEqualToString:@"plex"]) {
        if (!login.address.length) {
            login.address = @"Account";
        }
        if (!login.port) {
            login.port = @32400;
        }
    }

    self.loginInformation = login;
    NSError *error = nil;
    if (![self.savedLoginsDataSource saveLogin:login error:&error]) {
        [[[VLCAlertView alloc] initWithTitle:error.localizedDescription
                                    message:error.localizedFailureReason
                          cancelButtonTitle:NSLocalizedString(@"BUTTON_OK", nil) otherButtonTitles:nil] show];
    }

    [self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
}

- (void)connectLoginDataSource:(VLCNetworkLoginDataSourceLogin *)dataSource
{
    if (!self.protocolSelected)
        return;

    VLCNetworkServerLoginInformation *loginInformation = dataSource.loginInformation;
    self.loginInformation = loginInformation;

    // TODO: can we move this Plex stuff to the Plex server browser?
    if ([loginInformation.protocolIdentifier isEqualToString:@"plex"] &&
        (loginInformation.username.length > 0 || loginInformation.password.length > 0)) {
        _activityBackgroundView.hidden = NO;
        [_activityIndicator startAnimating];

        [self performSelectorInBackground:@selector(_plexLogin) withObject:nil];
    } else {
        [self.delegate loginWithLoginViewController:self loginInfo:dataSource.loginInformation];
    }

    [self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
}

- (BOOL)protocolSelected
{
    if (self.protocolDataSource.protocol == VLCServerProtocolUndefined) {
        VLCAlertView *alertView = [[VLCAlertView alloc] initWithTitle:NSLocalizedString(@"PROTOCOL_NOT_SELECTED", nil)
                                                              message:NSLocalizedString(@"PROTOCOL_NOT_SELECTED", nil)
                                                    cancelButtonTitle:NSLocalizedString(@"BUTTON_OK", nil)
                                                    otherButtonTitles:nil];
        [alertView performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:NO];
        [self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
        return NO;
    }

    return YES;
}

#pragma mark - VLCNetworkLoginDataSourceSavedLoginsDelegate
- (void)loginsDataSource:(VLCNetworkLoginDataSourceSavedLogins *)dataSource selectedLogin:(VLCNetworkServerLoginInformation *)login
{
    self.loginInformation = login;
}

@end