/*
 *  Copyright (C) 2016 Savoir-faire Linux Inc.
 *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
 */
#import "ExportPasswordWC.h"

//LRC
#import <account.h>

//Ring
#import "views/ITProgressIndicator.h"
@interface ExportPasswordWC() <NSTextFieldDelegate>{
    __unsafe_unretained IBOutlet NSSecureTextField* passwordField;
    __unsafe_unretained IBOutlet NSTextField* resultField;
    __unsafe_unretained IBOutlet NSTextField* errorField;
    __unsafe_unretained IBOutlet ITProgressIndicator* progressIndicator;
}
@end

@implementation ExportPasswordWC {
    struct {
        unsigned int didStart:1;
        unsigned int didComplete:1;
    } delegateRespondsTo;
}

@synthesize account;
QMetaObject::Connection accountConnection;


#pragma mark - Initialize
- (id)initWithDelegate:(id <ExportPasswordDelegate>) del actionCode:(NSInteger) code
{
    return [super initWithWindowNibName:@"ExportPasswordWindow" delegate:del actionCode:code];
}

- (void)windowDidLoad
{
    [super windowDidLoad];
}

- (void)setDelegate:(id <ExportPasswordDelegate>)aDelegate
{
    if (super.delegate != aDelegate) {
        [super setDelegate: aDelegate];
        delegateRespondsTo.didStart = [aDelegate respondsToSelector:@selector(didStartWithPassword:)];
        delegateRespondsTo.didComplete = [aDelegate respondsToSelector:@selector(didCompleteWithPin:Password:)];
    }
}

- (void)showError:(NSString*) errorMessage
{
    [errorField setStringValue:errorMessage];
    [super showError];
}

- (void)showLoading
{
    [progressIndicator setNumberOfLines:30];
    [progressIndicator setWidthOfLine:2];
    [progressIndicator setLengthOfLine:5];
    [progressIndicator setInnerMargin:20];
    [super showLoading];
}

#pragma mark - Events Handlers
- (IBAction)completeAction:(id)sender
{
    // Check to avoid exporting an old account (not supported by daemon)
    if (account->needsMigration()) {
        [self showError:NSLocalizedString(@"You have to migrate your account before exporting", @"Error shown to user")];
    } else {
        NSString* password = passwordField.stringValue;
        [self showLoading];
        QObject::disconnect(accountConnection);
        accountConnection = QObject::connect(account,
                                             &Account::exportOnRingEnded,
                                             [=](Account::ExportOnRingStatus status,const QString &pin) {
                                                 NSLog(@"Export ended!");
                                                 switch (status) {
                                                     case Account::ExportOnRingStatus::SUCCESS:{
                                                         NSString *nsPin = pin.toNSString();
                                                         NSLog(@"Export ended with Success, pin is %@",nsPin);
                                                         [resultField setAttributedStringValue:[self formatPinMessage:nsPin]];
                                                         [self showFinal];
                                                     }
                                                         break;
                                                     case Account::ExportOnRingStatus::WRONG_PASSWORD:{
                                                         NSLog(@"Export ended with wrong password");
                                                         [self showError:NSLocalizedString(@"The password you entered does not unlock this account", @"Error shown to the user" )];
                                                     }
                                                         break;
                                                     case Account::ExportOnRingStatus::NETWORK_ERROR:{
                                                         NSLog(@"Export ended with NetworkError!");
                                                         [self showError:NSLocalizedString(@"A network error occured during the export", @"Error shown to the user" )];
                                                     }
                                                         break;
                                                     default:{
                                                         NSLog(@"Export ended with Unknown status!");
                                                         [self showError:NSLocalizedString(@"An error occured during the export", @"Error shown to the user" )];
                                                     }
                                                         break;
                                                 }
                                             });
        account->exportOnRing(QString::fromNSString(password));
    }
}

//TODO: Move String formatting to a dedicated Utility Classes
- (NSAttributedString*) formatPinMessage:(NSString*) pin
{
    NSMutableAttributedString* thePin = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"\n%@\n", pin]];
    [thePin beginEditing];
    NSRange range = NSMakeRange(0, [thePin length]);
    [thePin addAttribute:NSFontAttributeName value:[NSFont fontWithName:@"Helvetica-Bold" size:20.0] range:range];

    NSMutableParagraphStyle* mutParaStyle=[[NSMutableParagraphStyle alloc] init];
    [mutParaStyle setAlignment:NSCenterTextAlignment];
    
    [thePin addAttributes:[NSDictionary dictionaryWithObject:mutParaStyle forKey:NSParagraphStyleAttributeName] range:range];

    NSMutableAttributedString* infos = [[NSMutableAttributedString alloc] initWithString:NSLocalizedString(@"To complete the processs, you need to open Ring on the new device and choose the option \"Link this device to an account\". Your pin is valid for 10 minutes.","Title shown to user to concat with Pin")];
    [thePin appendAttributedString:infos];
    [thePin endEditing];

    return thePin;
}

@end