/*

     File: AppDelegate.m

 Abstract: Application delegate class illustrating how to setup and start an audio burn.

  Version: 1.2

 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

 Inc. ("Apple") in consideration of your agreement to the following

 terms, and your use, installation, modification or redistribution of

 this Apple software constitutes acceptance of these terms.  If you do

 not agree with these terms, please do not use, install, modify or

 redistribute this Apple software.

 In consideration of your agreement to abide by the following terms, and

 subject to these terms, Apple grants you a personal, non-exclusive

 license, under Apple's copyrights in this original Apple software (the

 "Apple Software"), to use, reproduce, modify and redistribute the Apple

 Software, with or without modifications, in source and/or binary forms;

 provided that if you redistribute the Apple Software in its entirety and

 without modifications, you must retain this notice and the following

 text and disclaimers in all such redistributions of the Apple Software.

 Neither the name, trademarks, service marks or logos of Apple Inc. may

 be used to endorse or promote products derived from the Apple Software

 without specific prior written permission from Apple.  Except as

 expressly stated in this notice, no other rights or licenses, express or

 implied, are granted by Apple herein, including but not limited to any

 patent rights that may be infringed by your derivative works or by other

 works in which the Apple Software may be incorporated.

 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,

 MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED

 AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

 STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE

 POSSIBILITY OF SUCH DAMAGE.

 Copyright (C) 2012 Apple Inc. All Rights Reserved.

 */

#import <DiscRecording/DiscRecording.h>

#import <DiscRecordingUI/DiscRecordingUI.h>

#import "AppDelegate.h"

#import "AIFFTrack.h"

@interface AppDelegate ()

@property (nonatomic, strong) IBOutlet NSWindow *window;

@property (assign) BOOL burning;

- (NSArray*) createTracks;

@end

@implementation AppDelegate

/* App's done launching, put up the burn setup panel. If the user chooses burn, 

 we'll start the burn, otherwise, just quit the app. */

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification;

{

    NSArray*    tracks = [self createTracks];

    if (tracks)

    {

        DRBurnSetupPanel*   bsp = [DRBurnSetupPanel setupPanel];

        // We'll be the delegate for the setup panel. This allows us to show off some 

        // of the customization you can do.

        [bsp setDelegate:self];

        if ([bsp runSetupPanel] == NSOKButton)

        {

            DRBurnProgressPanel*    bpp = [DRBurnProgressPanel progressPanel];

            [bpp setDelegate:self];

            // And start off the burn itself. This will put up the progress dialog 

            // and do all the nice pretty things that a happy app does.

            [bpp beginProgressPanelForBurn:[bsp burnObject] layout:tracks];

            /* If you wanted to run this as a sheet you would have sent

             [bpp beginProgressSheetForBurn:[bsp burnObject] layout:tracks modalForWindow:aWindow];

             */

        }

        else

            [NSApp terminate:self];

    }

    else

        [NSApp terminate:self];

}

- (NSArray*) createTracks

{

    NSOpenPanel *openPanel = [NSOpenPanel openPanel];

    // Ask the user for the list of files to burn. 

    [openPanel setAllowsMultipleSelection:YES];

    [openPanel setDelegate:self];

    [openPanel setTitle:@"Choose some AIFF files to burn onto CD."];

    [openPanel setPrompt:@"Select"];

    if ([openPanel runModal] != NSOKButton) {

        return nil;

    }

    NSMutableArray *trackArray = [[NSMutableArray alloc] init];

    /*

     Iterate over the filenames returned by the open panel.

     Make a track for each one. This is one form the layout can be in and produces a single session disc with multiple tracks.

     */

    for (NSURL *fileURL in [openPanel URLs]) {

        AIFFTrackProducer *producer = [[AIFFTrackProducer alloc] initWithPath:[fileURL path]];

        AIFFAudioTrack *track = [[AIFFAudioTrack alloc] initWithProducer:producer];

        [trackArray addObject:track];

    }

    return trackArray;

}

- (BOOL) validateMenuItem:(id)sender

{

    if ([sender action] == @selector(terminate:))

    {

        return (self.burning == NO); // Don't quit while a burn is in progress.

    }

    else

        return [super validateMenuItem:sender];

}

#pragma mark Setup Panel Delegate Methods

/* We're implementing some of these setup panel delegate methods to illustrate what you could do to control a

 burn setup. */

/*

 This delegate method is called when a device is plugged in and becomes available for use. It's also

 called for each device connected to the machine when the panel is first shown. 

 Its's possible to query the device and ask it just about anything to determine if it's a device

 that should be used.

 Just return YES for a device you want and NO for those you don't.

 */

- (BOOL) setupPanel:(DRSetupPanel*)aPanel deviceCouldBeTarget:(DRDevice*)device

{

#if 0

    /*

     This bit of code shows how to filter devices bases on the properties of the device.

     For example, it's possible to limit the drives displayed to only those hooked up over firewire, or converesely, you could NOT show drives if there was some reason to.

     */

    NSDictionary*   deviceInfo = [device info];

    if ([[deviceStatus objectForKey:DRDevicePhysicalInterconnectKey] isEqualToString:DRDevicePhysicalInterconnectFireWire])

        return YES;

    else

        return NO;

#else

    return YES;

#endif

}

/*

 This delegate method is called whenever the state of the media changes and the setup panel is being displayed.

 When we get sent this we're going to do a little bit of work to try to play nice with the rest of the world, but it essentially comes down to "is it a CDR or CDRW" that we care about. We could also check to see if there's enough room for our data (maybe the user stuck in a mini 2" CD or we need an 80 min CD).

 Allows the delegate to determine if the media inserted in the device is suitable for whatever operation is to be performed. The delegate should  return a string to be used in the setup panel to inform the user of the media status. If this method returns %NO, the default button will be disabled.

 "*/

- (BOOL)setupPanel:(DRSetupPanel*)aPanel deviceContainsSuitableMedia:(DRDevice*)device promptString:(NSString**)prompt

{

    /*

     Check to see what sort of media there is present in the drive. If it's not a CDR or CDRW we reject it. This prevents us from burning to a DVD.

     */

    NSString *mediaType = [[[device status] objectForKey:DRDeviceMediaInfoKey] objectForKey:DRDeviceMediaTypeKey];

    if ([mediaType isEqualToString:DRDeviceMediaTypeCDR] == NO && [mediaType isEqualToString:DRDeviceMediaTypeCDRW] == NO)

    {

        NSString * __autoreleasing errorString = [NSString stringWithFormat:@"Media is not writeable (%@)", mediaType];

        *prompt = errorString;

        return NO;

    }

    /*

     OK everyone agrees that this disc is OK to be burned in this drive.

     We could also return our own OK, prompt string here, but we'll let the default all ready string do it's job

     *prompt = [NSString stringWithCString:"Let's roll!"];

     */

    return YES;

}

#pragma mark Progress Panel Delegate Methods

/*

 Set the 'burning' property value to prevent the app from quitting while a burn is in progress.

 This gets checked up in validateMenu: and we'll set it to NO in burnProgressPanelDidFinish:.

 */

- (void) burnProgressPanelWillBegin:(NSNotification*)aNotification

{

    self.burning = YES; // Keep the app from being quit from underneath the burn.

}

- (void) burnProgressPanelDidFinish:(NSNotification*)aNotification

{

    self.burning = NO;  // OK we can quit now.

}

/* 

 Nothing fancy here. we just want to illustrate that it's possible for a delegate of the progress panel to alter how the burn is handled once it completes. You may want to put up your own dialog, sent a notification if you're in the background, or just ignore it no matter what.

 We'll just NSLog the fact it finished (for good or bad) and return YES to indicate that we didn't handle it ourselves and that the progress panel should continue on its merry way.

 */

- (BOOL)burnProgressPanel:(DRBurnProgressPanel*)theBurnPanel burnDidFinish:(DRBurn*)burn

{

    NSDictionary*   burnStatus = [burn status];

    NSString*       state = burnStatus[DRStatusStateKey];

    if ([state isEqualToString:DRStatusStateFailed])

    {

        NSDictionary *errorStatus = burnStatus[DRErrorStatusKey];

        NSString *errorString = errorStatus[DRErrorStatusErrorStringKey];

        NSLog(@"The burn failed (%@)!", errorString);

    }

    else

        NSLog(@"Burn finished fine");

    return NO;

}

#pragma mark Open Panel Delegate Methods

- (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename

{

    NSString *resolvedPath = [filename stringByResolvingSymlinksInPath];

    NSError *error;

    NSDictionary *fileAttribs = [[NSFileManager defaultManager] attributesOfItemAtPath:resolvedPath error:&error];

    if (fileAttribs == nil) {

        NSLog(@"Could not get attributes of file at %@\n%@", resolvedPath, [error localizedDescription]);

        return NO;

    }

    // Check for directories.

    if ([NSFileTypeDirectory isEqualTo:[fileAttribs objectForKey:NSFileType]])

    {

        if ([[NSWorkspace sharedWorkspace] isFilePackageAtPath:filename] == NO)

            return YES;

        else

            return NO;

    }

    else

    {

        // It's a file there. One more check for aliases to something.

        FSRef       ref;

        OSStatus    error;

        Boolean     isAlias, isFolder;

        CFURLRef    fileURL;

        NSString*   filepath;

        error = FSPathMakeRef((UInt8*)[filename fileSystemRepresentation], &ref, &isFolder);

        if (error) return NO;

        error = FSIsAliasFile(&ref, &isAlias, &isFolder);

        if (error) return NO;

        if (isAlias)

        {

            if (isFolder) return YES;

            error = FSResolveAliasFileWithMountFlags(&ref, true, &isFolder, &isAlias, 

                                                     kARMMountVol | kARMNoUI | kARMMultVols | kARMSearch);

            if (error) return NO;

            if (isFolder) return YES;

            fileURL = CFURLCreateFromFSRef(kCFAllocatorDefault, &ref);

            filepath = (NSString*)CFBridgingRelease(CFURLCopyFileSystemPath(fileURL, kCFURLPOSIXPathStyle));

            CFRelease(fileURL);

            // Recurse. Recurse until we finally exhaust the alias->symlink->alias->etc loop that might be there. 

            // Sure hope there's not a loop in there somewhere :-)

            return [self panel:sender shouldShowFilename:filepath];

        }

        else

        {

            AIFFFileInfo info;

            return [AIFFTrackProducer parseFileAtPath:filename fileInfo:&info];

        }

    }

}

@end