/*

     File: SAMMakeCommand.m

 Abstract: SimpleAssetManager command class that handles the Create Asset AppleEvent.

  Version: 1.0

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 */

#import "SAMMakeCommand.h"

#import "SAMDocumentController.h"

#import "SAMDocument.h"

#import "SAMAsset.h"

#import "scriptLog.h"

#import "ScriptingSupportCategories.h"

@implementation SAMMakeCommand

- (id)performDefaultImplementation {

    id      result = nil;

    SLOG(@"SAMMakeCommand performDefaultImplementation");

    NSDictionary * theArguments = [self evaluatedArguments];

    /* show the direct parameter and arguments */

    SLOG(@"The direct parameter is: '%@'", [self directParameter]);

    SLOG(@"The other parameters are: '%@'", theArguments);

    id classParameter = [theArguments objectForKey:@"ObjectClass"];

    NSDictionary* properties = [theArguments objectForKey:@"KeyDictionary"];

    if ( classParameter == nil ) {

        SLOG(@"No object class specified");

        [self setScriptErrorNumber:errAEParamMissed];

        return nil;

    }

    FourCharCode    classCode = (FourCharCode)[classParameter integerValue];

    if ( [[NSScriptClassDescription classDescriptionForClass:[SAMAsset class]] matchesAppleEventCode:classCode] ) {

        SAMDocumentController *docController = [SAMDocumentController sharedDocumentController];

        SAMDocument *currentDocument = [docController currentDocument];

        if ( currentDocument == nil ) {

            NSArray     *documents = [docController documents];

            if ( [documents count] > 0 )

                // pick up the first document if current document is nil

                currentDocument = [documents objectAtIndex:0];

            else

                // create an untitled document

                currentDocument = [docController openUntitledDocumentAndDisplay:YES error:nil];

        }

        // invoke the new asset sheet and suspend script execution

        id nameParameter = nil;

        id metadataParameter = nil;

        id dataOptionsParameter = nil;

        if ( properties != nil ) {

            nameParameter = [properties objectForKey:@"name"];

            metadataParameter = [properties objectForKey:@"metadata"];

            dataOptionsParameter = [properties objectForKey:@"dataOptions"];

        }

        // get the user interaction level and see if we can bring up our UI

        NSUInteger interactionLevel = [self appleEventUserInteractionLevel];

        if ( interactionLevel == kAECanInteract ||

            interactionLevel == kAEAlwaysInteract ||

            interactionLevel == kAECanSwitchLayer ) {

            SAMWindowController *currentWindowController = currentDocument.primaryWindowController;

        // suspend the script execution and invoke the UI

        [self suspendExecution];

            [currentWindowController newAssetWithName:nameParameter

                                 metadata:metadataParameter

                              dataOptions:dataOptionsParameter

                        completionHandler:^(SAMAsset *newAsset) {

            if ( newAsset != nil ) {

                NSScriptObjectSpecifier *theSpec = [newAsset objectSpecifier];

                // resume the execution with the result

                [self resumeExecutionWithResult:theSpec];

            }

            else {

                // indicate that the user has canceled the operation and resume script execution

                [self setScriptErrorNumber:userCanceledErr];

                [self resumeExecutionWithResult:nil];

            }

        }];

    }

    else {

            // create a new asset at a default locatino if user interactino is not allowed

            NSDictionary    *defaultLocation = [currentDocument defaultAssetLocation];

            NSInteger       assetIndex = [currentDocument addAssetAtLocation:defaultLocation

                                                                     content:FALSE

                                                                    metadata:metadataParameter

                                                                 dataOptions:dataOptionsParameter];

            SAMAsset        *newAsset = [currentDocument.assets objectAtIndex:assetIndex];

            result = [newAsset objectSpecifier];

        }

    }

    else {

        // invokde the standard implementation by the super class

        result = [super performDefaultImplementation];

    }

    return result;

}

- (NSUInteger)appleEventUserInteractionLevel

{

    NSAppleEventManager     *aem = [NSAppleEventManager sharedAppleEventManager];

    NSAppleEventDescriptor  *currentEvent = [aem currentAppleEvent];

    NSAppleEventDescriptor  *interactionLevel = [currentEvent attributeDescriptorForKeyword:keyInteractLevelAttr];

    return [interactionLevel int32Value];

}

@end