/*
 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 "BugReportViewController.h"

#import "AppDelegate.h"

#import "GBDeviceInfo_iOS.h"

@interface BugReportViewController ()
{
    MXBugReportRestClient *bugReportRestClient;

    // The temporary file used to store the screenshot
    NSURL *screenShotFile;
}

@property (nonatomic) BOOL sendLogs;
@property (nonatomic) BOOL sendScreenshot;

@end

@implementation BugReportViewController

#pragma mark - Class methods

+ (UINib *)nib
{
    return [UINib nibWithNibName:NSStringFromClass([BugReportViewController class])
                          bundle:[NSBundle bundleForClass:[BugReportViewController class]]];
}

+ (instancetype)bugReportViewController
{
    return [[[self class] alloc] initWithNibName:NSStringFromClass([BugReportViewController class])
                                          bundle:[NSBundle bundleForClass:[BugReportViewController class]]];
}

#pragma mark -

- (void)showInViewController:(UIViewController *)viewController
{
    self.providesPresentationContextTransitionStyle = YES;
    self.definesPresentationContext = YES;
    self.modalPresentationStyle = UIModalPresentationOverFullScreen;
    self.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

    [viewController presentViewController:self animated:YES completion:nil];
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    _logsDescriptionLabel.text = NSLocalizedStringFromTable(@"bug_report_logs_description", @"Vector", nil);
    _sendLogsLabel.text = NSLocalizedStringFromTable(@"bug_report_send_logs", @"Vector", nil);
    _sendScreenshotLabel.text = NSLocalizedStringFromTable(@"bug_report_send_screenshot", @"Vector", nil);

    _containerView.layer.cornerRadius = 20;

    _bugReportDescriptionTextView.layer.borderWidth = 1.0f;
    _bugReportDescriptionTextView.layer.borderColor = kRiotColorLightGrey.CGColor;
    _bugReportDescriptionTextView.text = nil;
    _bugReportDescriptionTextView.delegate = self;

    if (_reportCrash)
    {
        _titleLabel.text = NSLocalizedStringFromTable(@"bug_crash_report_title", @"Vector", nil);
        _descriptionLabel.text = NSLocalizedStringFromTable(@"bug_crash_report_description", @"Vector", nil);
    }
    else
    {
        _titleLabel.text = NSLocalizedStringFromTable(@"bug_report_title", @"Vector", nil);
        _descriptionLabel.text = NSLocalizedStringFromTable(@"bug_report_description", @"Vector", nil);

        // Allow to send empty description for crash report but not for bug report
        _sendButton.enabled = NO;
    }

    _sendingContainer.hidden = YES;

    self.sendLogs = YES;
    self.sendScreenshot = YES;

    // Hide the screenshot button if there is no screenshot
    if (!_screenshot)
    {
        _sendScreenshotContainer.hidden = YES;
        _sendScreenshotContainerHeightConstraint.constant = 0;
    }

    // Listen to sendLogs tap
    UITapGestureRecognizer *sendLogsTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onSendLogsTap:)];
    [sendLogsTapGesture setNumberOfTouchesRequired:1];
    [_sendLogsContainer addGestureRecognizer:sendLogsTapGesture];
    _sendLogsContainer.userInteractionEnabled = YES;

    // Listen to sendScreenshot tap
    UITapGestureRecognizer *sendScreenshotTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onSendScreenshotTap:)];
    [sendScreenshotTapGesture setNumberOfTouchesRequired:1];
    [_sendScreenshotContainer addGestureRecognizer:sendScreenshotTapGesture];
    _sendScreenshotContainer.userInteractionEnabled = YES;

    // Add an accessory view in order to retrieve keyboard view
    _bugReportDescriptionTextView.inputAccessoryView = [[UIView alloc] initWithFrame:CGRectZero];
}

- (void)dealloc
{
    _bugReportDescriptionTextView.inputAccessoryView = nil;
}

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

    if (screenShotFile)
    {
        [[NSFileManager defaultManager] removeItemAtURL:screenShotFile error:nil];
        screenShotFile = nil;
    }
}

- (void)setSendLogs:(BOOL)sendLogs
{
    _sendLogs = sendLogs;
    if (_sendLogs)
    {
        _sendLogsButtonImage.image = [UIImage imageNamed:@"selection_tick"];
    }
    else
    {
        _sendLogsButtonImage.image = [UIImage imageNamed:@"selection_untick"];
    }
}

- (void)setSendScreenshot:(BOOL)sendScreenshot
{
    _sendScreenshot = sendScreenshot;
    if (_sendScreenshot)
    {
        _sendScreenshotButtonImage.image = [UIImage imageNamed:@"selection_tick"];
    }
    else
    {
        _sendScreenshotButtonImage.image = [UIImage imageNamed:@"selection_untick"];
    }
}

#pragma mark - MXKViewController
- (void)onKeyboardShowAnimationComplete
{
    self.keyboardView = _bugReportDescriptionTextView.inputAccessoryView.superview;
}

-(void)setKeyboardHeight:(CGFloat)keyboardHeight
{
    // In portrait in 6/7 and 6+/7+, make the height of the popup smaller to be able to
    // display Cancel and Send buttons.
    // Do nothing in landscape or in 5 in portrait and in landscape. There will be not enough
    // room to display bugReportDescriptionTextView.
    if (self.view.frame.size.height > 568)
    {
        self.scrollViewBottomConstraint.constant = keyboardHeight;
    }
    else
    {
        self.scrollViewBottomConstraint.constant = 0;
    }

    [self.view layoutIfNeeded];
}

#pragma mark - UITextViewDelegate

- (void)textViewDidChange:(UITextView *)textView
{
    _sendButton.enabled = (_bugReportDescriptionTextView.text.length != 0);
}

#pragma mark - User actions

- (IBAction)onSendButtonPress:(id)sender
{
    _sendButton.hidden = YES;
    _sendingContainer.hidden = NO;

    // Setup data to send
    NSString *url = [[NSUserDefaults standardUserDefaults] objectForKey:@"bugReportEndpointUrl"];
    bugReportRestClient = [[MXBugReportRestClient alloc] initWithBugReportEndpoint:url];

    // App info
    bugReportRestClient.appName = [[NSUserDefaults standardUserDefaults] objectForKey:@"bugReportApp"]; // Use the name allocated by the bug report server
    bugReportRestClient.version = [AppDelegate theDelegate].appVersion;
    bugReportRestClient.build = [AppDelegate theDelegate].build;

    // Device info
    bugReportRestClient.deviceModel = [GBDeviceInfo deviceInfo].modelString;
    bugReportRestClient.deviceOS = [NSString stringWithFormat:@"%@ %@", [[UIDevice currentDevice] systemName], [[UIDevice currentDevice] systemVersion]];

    // Screenshot
    NSArray<NSURL*> *files;
    if (_screenshot && _sendScreenshot)
    {
        // Store the screenshot into a temporary file
        NSData *screenShotData = UIImagePNGRepresentation(_screenshot);
        screenShotFile = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:@"screenshot.png"]];
        [screenShotData writeToURL:screenShotFile atomically:YES];

        files = @[screenShotFile];
    }

    // Submit
    [bugReportRestClient sendBugReport:_bugReportDescriptionTextView.text sendLogs:_sendLogs sendCrashLog:_reportCrash sendFiles:files progress:^(MXBugReportState state, NSProgress *progress) {

        switch (state)
        {
            case MXBugReportStateProgressZipping:
                _sendingLabel.text = NSLocalizedStringFromTable(@"bug_report_progress_zipping", @"Vector", nil);
                break;

            case MXBugReportStateProgressUploading:
                _sendingLabel.text = NSLocalizedStringFromTable(@"bug_report_progress_uploading", @"Vector", nil);
                break;

            default:
                break;
        }

        _sendingProgress.progress = progress.fractionCompleted;

    } success:^{

        bugReportRestClient = nil;

        if (_reportCrash)
        {
            // Erase the crash log
            [MXLogger deleteCrashLog];
        }

        [self dismissViewControllerAnimated:YES completion:nil];

    } failure:^(NSError *error) {

        bugReportRestClient = nil;

        [[AppDelegate theDelegate] showErrorAsAlert:error];

        _sendButton.hidden = NO;
        _sendingContainer.hidden = YES;
    }];
}

- (IBAction)onCancelButtonPressed:(id)sender
{
    if (bugReportRestClient)
    {
        // If the submission is in progress, cancel the sending and come back
        // to the bug report screen
        [bugReportRestClient cancel];
        bugReportRestClient = nil;

        _sendButton.hidden = NO;
        _sendingContainer.hidden = YES;
    }
    else
    {
        if (_reportCrash)
        {
            // Erase the crash log
            [MXLogger deleteCrashLog];
        }

        // Else, lease the bug report screen
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

- (IBAction)onSendLogsTap:(id)sender
{
    self.sendLogs = !self.sendLogs;
}

- (IBAction)onSendScreenshotTap:(id)sender
{
    self.sendScreenshot = !self.sendScreenshot;
}

@end