/// <reference path="../../Game.ts" />
/// <reference path="../../Sprite.ts" />
/// <reference path="Animation.ts" />
/// <reference path="Frame.ts" />
/// <reference path="FrameData.ts" />

class AnimationLoader {

    public static parseSpriteSheet(game: Game, key: string, frameWidth: number, frameHeight: number, frameMax:number): FrameData {

        //  How big is our image?

        var img = game.cache.getImage(key);

        if (img == null)
        {
            return null;
        }

        var width = img.width;
        var height = img.height;

        var row = Math.round(width / frameWidth);
        var column = Math.round(height / frameHeight);
        var total = row * column;

        if (frameMax !== -1)
        {
            total = frameMax;
        }

        //  Zero or smaller than frame sizes?
        if (width == 0 || height == 0 || width < frameWidth || height < frameHeight || total === 0)
        {
            return null;
        }

        //  Let's create some frames then
        var data: FrameData = new FrameData();

        var x = 0;
        var y = 0;

        //console.log('\n\nSpriteSheet Data');
        //console.log('Image Size:', width, 'x', height);
        //console.log('Frame Size:', frameWidth, 'x', frameHeight);
        //console.log('Start X/Y:', x, 'x', y);
        //console.log('Frames (Total: ' + total + ')');
        //console.log('-------------');

        for (var i = 0; i < total; i++)
        {
            data.addFrame(new Frame(x, y, frameWidth, frameHeight));

            //console.log('Frame', i, '=', x, y);

            x += frameWidth;

            if (x === width)
            {
                x = 0;
                y += frameHeight;
            }

        }

        return data;

    }

    public static parseJSONData(game: Game, json): FrameData {

        //  Let's create some frames then
        var data: FrameData = new FrameData();

        //  By this stage frames is a fully parsed array
        var frames = json;

        var newFrame:Frame;

        for (var i = 0; i < frames.length; i++)
        {
            newFrame = data.addFrame(new Frame(frames[i].frame.x, frames[i].frame.y, frames[i].frame.w, frames[i].frame.h));
            newFrame.setTrim(frames[i].trimmed, frames[i].sourceSize.w, frames[i].sourceSize.h, frames[i].spriteSourceSize.x, frames[i].spriteSourceSize.y, frames[i].spriteSourceSize.w, frames[i].spriteSourceSize.h);
            newFrame.filename = frames[i].filename;
        }

        return data;

    }

}