//
//  APApplescriptHandler.h
//  Helper Class to perform simple Applescript Message to an external 
//  Application from within a Cocoa App.
//
//  You are free to examine, use, alter and redistribute this code - 
//  but please drop me a mail in any case - especially if you 
//  changed something for better.
//  
//  Please excuse any bugs (of course, I do not take any warranties)
//  and even more my ugly english.
//
//  Created by Stefan Mueller on 06.07.06.
//  Copyright 2006 Arabian Penguins. All rights reserved.
//

#import "APApplescriptHandler.h"

@interface APApplescriptHandler (Private)
- (NSString *) createScriptForMessage:(NSString *)message;
- (NSAppleScript *) createAppleScriptForSource:(NSString *)sourceCode;
@end

@implementation APApplescriptHandler
// Designated Initializer
-(id)initWithApplicationName:(NSString *)applicationName {
	if ([self init]) {
		application = [applicationName copy];
		error = [[NSDictionary alloc]init]; 
	}
	return self;
}
// Accessors
-(NSString *)applicationName{return application;} 
-(NSDictionary *)error{return error;}

- (NSString*)createScriptForMessage:(NSString *)message {
	if ([self applicationName] && [[self applicationName] length ]> 1) {
		NSString * string = [[[NSString alloc] initWithFormat:@"tell application \"%s\"\n%s\nend tell\n", [[self applicationName] cString], [message cString]] autorelease];
		return string;
	} return nil;
}
- (NSAppleScript*)createAppleScriptForSource:(NSString *)sourceCode {
	NSAppleScript * script = [[[NSAppleScript alloc] initWithSource:sourceCode] autorelease];
	if ([script compileAndReturnError:&error]) {
		return script;
	} else return nil;
}
//Helper Methods
-(bool)performMessage:(NSString *)message {
    	return [self performScriptWithSource:[self createScriptForMessage:message]];
}
-(NSString *)getStringForMessage:(NSString *)message{
    	return [self getStringForScriptWithSource:[self createScriptForMessage:message]];
}
-(NSArray *)getArrayOfStringsForMessage:(NSString *)message{
    	return [self getArrayOfStringsForScriptWithSource:[self createScriptForMessage:message]];
}

//Worker Methods
-(bool)performScriptWithSource:(NSString *)sourceCode{
	NSAppleScript * script = [self createAppleScriptForSource:sourceCode];
	if (script) {
		NSAppleEventDescriptor * desc = [script executeAndReturnError:&error];
		return (desc && [error count]==0 );
	}
	return FALSE;
}
-(NSString *)getStringForScriptWithSource:(NSString *)sourceCode{
	NSAppleScript * script = [self createAppleScriptForSource:sourceCode];
	if (script) {
		NSAppleEventDescriptor *result = [script executeAndReturnError:&error];
		if (result) {
			return [result stringValue];
		}
	} 
	return false;

}
-(NSArray *)getArrayOfStringsForScriptWithSource:(NSString *)sourceCode{
	NSMutableArray * array = [[[NSMutableArray alloc] init] autorelease];
	NSAppleScript * script = [self createAppleScriptForSource:sourceCode];
	if (script) {
		NSAppleEventDescriptor *result = [script executeAndReturnError:&error];
		if (result)  {
			if ([result descriptorType]!=typeAEList) {
				NSException * myException = [NSException exceptionWithName:@"NoArrayException" reason:@"Returned Apple Event Descriptor is not an Array" userInfo:nil];
				[myException raise];
			};
			int index;
			int total = [result numberOfItems];
			for(index = 1; index <= total; index++) {
				NSAppleEventDescriptor * singleEvent = [result descriptorAtIndex:index];
				[array addObject:[singleEvent stringValue]];
			}
			return array;
		}
	} 
	return false;
}



-(void)dealloc{
	[application release];
	[error release];
	[super dealloc];
}
@end