QuietUnrar/QuietUnrarAppDelegate.m

//
//  QuietUnrarAppDelegate.m
//  QuietUnrar
//
//  Created by Robert McGovern on 2009/09/06.
//  Copyright 2009 Tarasis. All rights reserved.
//

#import <Carbon/Carbon.h>
#import <Cocoa/Cocoa.h>
#import <UserNotifications/UserNotifications.h>

#import "QuietUnrarAppDelegate.h"
#import "TDNUnarchiver.h"

@interface QuietUnrarAppDelegate ()

@property TDNUnarchiver * unarchiver;

@end

#pragma mark
@implementation QuietUnrarAppDelegate

@synthesize window, passwordView, passwordField, preferencesWindowController, unarchiver;

- (void) applicationWillFinishLaunching:(NSNotification *)notification {
    NSLog(@"applicationWillFinishLaunching");
	// The following is used to determine is the left or right shift keys were depressed
	// as the application was launched. Could be used to display a gui on Application start.
	KeyMap map;
	GetKeys(map);
	if (KEYMAP_GET(map, kVKC_Shift) || KEYMAP_GET(map, kVKC_rShift))
		NSLog(@"Shift or Right Shift");
}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
    NSLog(@"applicationDidFinishLaunching");

	// Having extracted our file or not, quit. Though should not if error is displayed.
	//[[NSApplication sharedApplication] terminate:self];
    [self requestUserPermissionForNotifications];

    preferencesWindowController = [[TDNPreferencesWindowController alloc] init];

    [preferencesWindowController showWindow:nil];
}

// Call one at a time for each file selected when app is run
// This is seemingly never called, even when only selecting a single file.
- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename {
	//NSLog(@"openFile: %@", filename);

	//[self extractRarWith:filename];
//    [self extractRarUsingUnrarKitWithFilename:filename];
	// Always return YES even if there is an error to avoid dialog indicating unable to
	// handle files of type RAR if the archive is corrupt or part of it is missing
	return YES;
}

- (void)application:(NSApplication *)theApplication openFiles:(NSArray *) arrayOfFilenames {
	NSLog(@"openFiles: %@", arrayOfFilenames);
    unarchiver = [[TDNUnarchiver alloc] init];
    unarchiver.quietUnrar = self;

    [self requestUserPermissionForNotifications];

	for (NSString * filename in arrayOfFilenames) {
		BOOL extracted = [unarchiver extractArchiveWithFilename:filename];
		if (extracted) {
            // post notification based on user preference
            if (true && true) { // if show notification + permission granted ...
                [self postNotificationUncompressedFile:filename];
            }
		}
	}

    [[NSApplication sharedApplication] terminate:self];
}

- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
    return YES;
}

#pragma mark UI Methods

// Presents a dialog to the user allowing them to Skip a file or overwrite an existing version
// returns YES or NO
- (BOOL) shouldFileBeReplaced:(NSString *) filename {
	BOOL result = NO;

	NSAlert *alert = [[NSAlert alloc] init];
	[alert addButtonWithTitle:@"Overwrite"];
	NSButton * skipButton = [alert addButtonWithTitle:@"Skip"];
	[skipButton setKeyEquivalent:@"\e"];
	[alert setMessageText:[NSString stringWithFormat:@"Overwrite %@?", filename]];
	[alert setInformativeText:[NSString stringWithFormat:@"The file %@ already exists. Do you wish to extract it again, overwriting the original file?", filename]];
    [alert setAlertStyle:NSAlertStyleWarning];

	if ([alert runModal] == NSAlertFirstButtonReturn) {
		result = YES;
	}


	return result;
}

// Indicate to the user that part of the RAR volume is missing.
- (void) alertUserOfMissing:(const char *) volume {
	NSAlert *alert = [[NSAlert alloc] init];
	[alert addButtonWithTitle:@"OK"];
	[alert setMessageText:[NSString stringWithFormat:@"Archive part %s is missing.", volume]];
	[alert setInformativeText:@"Unable to extract all files from RAR archive as part of it is missing"];
    [alert setAlertStyle:NSAlertStyleCritical];

	[alert runModal];

}

// Creates a dialog with a custom view with a NSSecureTextField which is displayed
// to the user so they can provide a password. Returns the entered password or nil
- (NSString *) requestArchivePassword {
	if (!passwordView) {

        NSBundle* bundle = [NSBundle bundleForClass:[self class]];

        [bundle loadNibNamed:@"PasswordView" owner:self topLevelObjects: nil];
    } else {
        [passwordField setStringValue:@""];
    }

	NSString * password = nil;

	NSAlert *alert = [[NSAlert alloc] init];
    [alert addButtonWithTitle:@"OK"];
    [alert addButtonWithTitle:@"Cancel"];
    [alert setMessageText:@"Archive Requires a password"];
    [alert setInformativeText:@"To extract the contents of this archive a password is required."];
	[alert setAccessoryView:passwordView];
    [alert setAlertStyle:NSAlertStyleWarning];

	if ([alert runModal] == NSAlertFirstButtonReturn) {
		password = [passwordField stringValue];
	}

	return password;
}

#pragma mark "Notifications"

- (void) requestUserPermissionForNotifications {
    UNUserNotificationCenter * center = [UNUserNotificationCenter currentNotificationCenter];

    [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound)
       completionHandler:^(BOOL granted, NSError * _Nullable error) {
          // Enable or disable features based on authorization.
        if (granted) {
            // set some flag, that would be used to see if notifications should be posted
            NSLog(@"Notification Permission Granted");
        }
    }];
}

- (void) postNotificationUncompressedFile:(NSString *) filename {
    // add details of notification
}
@end