//
//  ImageProcessor.m
//  gulfstream
//
//  Created by Andres David Carreño on 8/22/12.
//  Copyright (c) 2012 Zemoga. All rights reserved.
//

#import "ImageProcessor.h"

@implementation ImageProcessor

+ (BOOL)createFaceWithParameters:(NSString*)paramsString fromPath:(NSString*)path cubeFace:(NSString*)face forDebugging:(BOOL)forDebugging{

    BOOL boolResult = NO;
    NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *bundle = @"designer.bundle";
    NSString *bundlePath = [NSString stringWithFormat:@"%@/%@",documentsPath,bundle];

        //Creating arrays from the incoming strings
        //NSMutableArray *imagesArray = [[NSMutableArray alloc]initWithArray:[imagesString componentsSeparatedByString:@","]];
        NSMutableArray *paramsArray = [[NSMutableArray alloc]initWithArray:[paramsString componentsSeparatedByString:@","]];

        //We are going to store the UIImage instances here
        NSMutableArray *uiImagesArray = [[NSMutableArray alloc]init];

        for (int i=0; i<[imagesArray count]; i++) {
            if (![[paramsArray objectAtIndex:i] isEqualToString:@""]){

                //Creating Image using path and nameFile.
                NSString *imagePath = [NSString stringWithString:[NSString stringWithFormat:@"%@/%@/%@.png"
                                                                  ,bundlePath
                                                                  ,path
                                                                  ,[imagesArray objectAtIndex:i]]];

                UIImage *image = [[UIImage alloc]initWithContentsOfFile:imagePath];
                //Creating Color From Parameters
                NSString *rgbaColor = [paramsArray objectAtIndex:i];
                NSArray *rgbaArray = [rgbaColor componentsSeparatedByString:@"-"];
                NSMutableArray *finalArray = [[NSMutableArray alloc]init];

                CGFloat rComponent;
                CGFloat gComponent;
                CGFloat bComponent;
                CGFloat aComponent;

                rComponent = [[rgbaArray objectAtIndex:0] floatValue]/255.0;
                gComponent = [[rgbaArray objectAtIndex:1] floatValue]/255.0;
                bComponent = [[rgbaArray objectAtIndex:2] floatValue]/255.0;
                aComponent = [[rgbaArray objectAtIndex:3] floatValue];

                UIColor *color = [UIColor colorWithRed:rComponent green:gComponent blue:bComponent alpha:aComponent];

                // this could be processed inside a block with GCD
                //Colorize Image
                UIImage *actualImage = [ImageProcessor colorizeImage:image withColor:color];
                [finalArray addObject:actualImage];

                //Shadows Image
                UIImage *shadowsImage = [[UIImage alloc]initWithContentsOfFile:[NSString stringWithFormat:@"%@/%@/%@_shadows.png"
                                                                                ,bundlePath
                                                                                ,path,[imagesArray objectAtIndex:i]]];

                [finalArray addObject:shadowsImage];

                // this could be processed inside a block with GCD
                UIImage *finalImage = [ImageProcessor mergeImagesFromArray:finalArray];

                [uiImagesArray addObject:finalImage];


            }else{
                NSString *stringTest = [NSString stringWithFormat:@"%@/%@/%@.png",bundlePath,path,[imagesArray objectAtIndex:i]];
                UIImage *image = [[UIImage alloc]initWithContentsOfFile:stringTest];

                [uiImagesArray addObject:image];
            }
        }

        UIImage *imageFromMerge = [ImageProcessor mergeImagesFromArray:uiImagesArray];

        NSData *pngData = UIImagePNGRepresentation(imageFromMerge);

        NSString *newDir = [NSString stringWithFormat:@"%@/../tmp/", [[NSBundle mainBundle] bundlePath]];

        NSFileManager *fileManager = [NSFileManager defaultManager];

        [fileManager createDirectoryAtPath: newDir withIntermediateDirectories:YES attributes: nil error:nil];

        if([fileManager createFileAtPath:[NSString stringWithFormat:@"%@%@.png",newDir,face] contents:pngData attributes:nil]){
            boolResult = YES;
        }

    NSLog(@"RESULT:%d", boolResult);
    return boolResult;
}

+ (UIImage*)mergeImagesFromArray : (NSArray*) arrayOfImagesLocal {
    NSLog(@"=============== IMAGES MERGED ===============");
    UIImage *resultImage = [[UIImage alloc]init];
    if ([arrayOfImagesLocal count] != 0) {

        CGSize newSize = CGSizeMake(512, 512);
        UIGraphicsBeginImageContext(newSize);

        for (UIImage *currentImage in arrayOfImagesLocal) {
            [currentImage drawInRect:CGRectMake(0,0,newSize.width,newSize.height) blendMode:kCGBlendModeNormal alpha:1.0];
        }

        resultImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

        return resultImage;
    }
    return resultImage;
}

+ (UIImage *)colorizeImage:(UIImage *)baseImage withColor:(UIColor *)color {

    UIGraphicsBeginImageContext(baseImage.size);

    CGContextRef ctx = UIGraphicsGetCurrentContext();
    CGRect area = CGRectMake(0, 0, baseImage.size.width, baseImage.size.height);

    CGContextScaleCTM(ctx, 1, -1);
    CGContextTranslateCTM(ctx, 0, -area.size.height);
    CGContextSaveGState(ctx);
    CGContextClipToMask(ctx, area, baseImage.CGImage);
    [color set];
    CGContextFillRect(ctx, area);
    CGContextRestoreGState(ctx);
    CGContextSetBlendMode(ctx, kCGBlendModeOverlay);
    CGContextDrawImage(ctx, area, baseImage.CGImage);
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}

@end