#import "AppController.h"

NSString* LAST_DEST_DIR = @"LastDestDir";
NSString* LAST_SOURCE_FILE = @"LastSourceFile";
NSString* LAST_SEPARATOR = @"LastSeparator";
@implementation AppController


- (id)init {
	[super init];
	typesArray = [[NSArray arrayWithObjects: @"txt", @"pdf", nil] retain];
	chunker = [[TextChunker alloc] init]; 		
	fileManager =  [[NSFileManager alloc] init];
	userDefaults = [[NSUserDefaults standardUserDefaults] retain];
	return self;
}

- (void)awakeFromNib {
	//the text fields are set up to be blank by default in the nib
	if ((nil != [userDefaults objectForKey:LAST_DEST_DIR]) &&
		[fileManager fileExistsAtPath:[userDefaults objectForKey:LAST_DEST_DIR]]) {
		[destDir setStringValue:[userDefaults stringForKey:LAST_DEST_DIR]];
	}
		
	if ((nil != [userDefaults objectForKey:LAST_SOURCE_FILE]) &&
		[fileManager fileExistsAtPath:[userDefaults objectForKey:LAST_SOURCE_FILE]]) {
		[sourceFile setStringValue:[userDefaults stringForKey:LAST_SOURCE_FILE]];
	}
	
	if (nil != [userDefaults objectForKey:LAST_SEPARATOR]) {
		[separatorValue setStringValue:[userDefaults stringForKey:LAST_SEPARATOR]];
	}

	//the copy button is set to be disabled by default in the nib
	if  (! 
		 (([[sourceFile stringValue] isEqualToString:@""]) || 
		  ([[destDir stringValue] isEqualToString:@""]))
		 ) {
		[copyButton setEnabled:YES];
	}	

}

- (IBAction)copyIt:(id)sender {
	NSString* fileName = [[sourceFile stringValue] stringByExpandingTildeInPath];
	
	[progressIndicator startAnimation:nil];
	if ([[fileName pathExtension] isEqualToString:@"pdf"]) {
		NSLog(@"Trying to open a PDF File...next time");
	}
	else if ([[fileName pathExtension] isEqualToString:@"txt"]) {
		[chunker chunkIt:fileName
				   toDir:[[destDir stringValue] stringByExpandingTildeInPath] 
		   withSeparator:[separatorValue stringValue]];
	}
	else   {//this should never happen if users are forced
			//to select files with the open pane and all values
			//in typesArray are handled in this event loop
		NSLog(@"Unrecognized file type");
	}
	[progressIndicator stopAnimation:nil];
	
	[userDefaults setObject:[separatorValue stringValue] forKey:LAST_SEPARATOR];
}


- (IBAction)openFileDialog:(id)sender { 
	NSOpenPanel* openPanel; 
	
	if(0 == [typesArray count]) { 
		typesArray = nil; //allow any type
	} 

	//configure the open panel 
	openPanel = [NSOpenPanel openPanel]; 
	[openPanel setAllowsMultipleSelection:NO]; 
	[openPanel setTreatsFilePackagesAsDirectories:NO]; 
	[openPanel setResolvesAliases:YES]; 
		
	if ([sender isEqualTo:sourceButton]) {
		[openPanel setCanChooseDirectories:NO]; 
		[openPanel setCanChooseFiles:YES]; 
		[openPanel setTitle:@"Source File"];
		
		if ((nil != [userDefaults objectForKey:LAST_SOURCE_FILE]) &&
			[fileManager fileExistsAtPath:[userDefaults objectForKey:LAST_SOURCE_FILE]]) {
			[openPanel setDirectory:[[userDefaults stringForKey:LAST_SOURCE_FILE]
				stringByDeletingLastPathComponent]];
		}
		else {
			[openPanel setDirectory:[@"~" stringByExpandingTildeInPath]]; 
		}
		
	}
	else {
		[openPanel setCanChooseDirectories:YES]; 
		[openPanel setCanCreateDirectories:YES];
		[openPanel setCanChooseFiles:NO]; 
		[openPanel setTitle:@"Destination Directory"];
		
		if ((nil != [userDefaults objectForKey:LAST_DEST_DIR]) &&
			[fileManager fileExistsAtPath:[userDefaults objectForKey:LAST_DEST_DIR]]) {
			[openPanel setDirectory:[userDefaults stringForKey:LAST_DEST_DIR]];
		}
		else {
			[openPanel setDirectory:@"/Volumes"]; 
		}
		
	}
		
	if (NSOKButton == [openPanel runModalForTypes:typesArray]) { 
		NSArray* selection = [openPanel filenames];
		
		if ([sender isEqualTo:sourceButton]) {
			[sourceFile setStringValue:[selection lastObject]];
		}
		else {
			[destDir setStringValue:[selection lastObject]];
		}
	} 
	
	if  (! 
			(([[sourceFile stringValue] isEqualToString:@""]) || 
		    ([[destDir stringValue] isEqualToString:@""]))
		 ) {
		[copyButton setEnabled:YES];
	}	
	
	[userDefaults setObject:[destDir stringValue] forKey:LAST_DEST_DIR];
	[userDefaults setObject:[sourceFile stringValue] forKey:LAST_SOURCE_FILE];
} 


- (void)dealloc {
	[userDefaults synchronize];
	
	[chunker release];
	[typesArray release];
	[userDefaults release];
	[fileManager release];
	[super dealloc];
}

@end