// Stitchode's main changes and addtions to snap! go in here
// sorry it lacks proper documentation


var tStitch = {};

tStitch.draw_jumps = true;
tStitch.draw_stitches = true;
tStitch.draw_stitch_len = 2;

tStitch.debug_msg = function (st,clear) {
	o = new String();
	if (!clear) {
		o = document.getElementById("bug").innerHTML;
	} else {
		o = "";
	}
	o += st;
	document.getElementById("bug").innerHTML = o;
}

tStitch.getBaseURL = function () {
    var url = location.href;  // entire url including querystring - also: window.location.href;
    var baseURL = url.substring(0, url.lastIndexOf('/'));
	return baseURL + "/";
}

tStitch.debug = true;
tStitch.stitches = {};
tStitch.stitches.x = new Array();
tStitch.stitches.y = new Array();
tStitch.stitches.jump = new Array();

tStitch.clearPoints = function() {
	tStitch.stitches.x = new Array();
	tStitch.stitches.y = new Array();
	tStitch.stitches.jump = new Array();
}
tStitch.addPoint = function (x,y,jump) {
	if (tStitch.debug) {
		s = new String();
		s = s + "(" + x + "," + y;
		if (jump) s = s + ",jump";
		s+= ")";
		tStitch.debug_msg(s);
	}
	
	if (tStitch.stitches.x[tStitch.stitches.x.length-1] == x  &&
		tStitch.stitches.y[tStitch.stitches.y.length-1] == y
	) {
		//alert("pint exist");
	} else { 
		tStitch.stitches.x.push(x);
		tStitch.stitches.y.push(y);
		tStitch.stitches.jump.push(jump);
	}
}

tStitch.toogleShowStitches = function() {
	tStitch.draw_stitches = !tStitch.draw_stitches;
}

tStitch.getShowStitches = function() {
	return tStitch.draw_stitches;
}

tStitch.toogleShowJumpStitches = function() {
	tStitch.draw_jumps = !tStitch.draw_jumps;
}

tStitch.getShowJumpStitches = function() {
	return tStitch.draw_jumps;
}



tStitch.upload = function() {

	tStitch.debug_msg("uploading points... sending SAVE with num points= " + tStitch.stitches.x.length, true);
	params = { "x[]": tStitch.stitches.x, "y[]":tStitch.stitches.y, "j[]":tStitch.stitches.jump };		
	
    if (tStitch.stitches.x.length <= 1 || tStitch.stitches.y <= 1) {
		new  DialogBoxMorph().inform(
			'Upload Error', 
			'No stitches to upload, please (re)generate a drawing first!', 
			world);
	
	} else {
		
		$.post( 
			"/upload", 
			data = params,
			successCallback = function (data) {
				if (data!="ERROR") {
					/*new  DialogBoxMorph().inform(
						'Upload Success', 
						'Your embroidery file is ready and will be available at this url:\n' +
						window.location.hostname + '/view/'+data,'\n', 
						world);*/
					window.open('http://' + window.location.hostname + '/view/'+data, 'TurtleStitch file preview');
				} else {
					new  DialogBoxMorph().inform(
						'Upload Error', 
						'Sorry! Upload failed for an unknown reason', 
						world);					
				}
			});
	}
	
	/*
	$.fileDownload(tStitch.getBaseURL() +"stitchcode/backend/save.py", {
		successCallback: function (html, url) {
			alert("DSD");
		},
		failCallback: function (html, url) {
			alert(
			  'Your file download just failed for this URL:' + url + 
			  '\r\n' + 'Here was the resulting error HTML: \r\n' 
				+ html
			);
		},
	
		httpMethod: "POST",
		data: params
	});		*/
}




/* Sprite */
// modified SpriteMorph turtle functions

// SpriteMorph motion primitives


SpriteMorph.prototype.forward = function (steps) {
    var dest,
        dist = steps * this.parent.scale || 0;

    if (dist >= 0) {
        dest = this.position().distanceAngle(dist, this.heading);
    } else {
        dest = this.position().distanceAngle(
            Math.abs(dist),
            (this.heading - 180)
        );
    }
    
    this.setPosition(dest);
    this.positionTalkBubble();
    //this.drawLineX(dest);
    
    tx = dest.x - this.parent.topLeft().x
    ty = dest.y - this.parent.topLeft().y
    tjump = !this.isDown;
    tStitch.addPoint(tx,ty,tjump);
    //alert("move to: " + tx + "x" + ty + " - isJump = " + tjump);
        
};

SpriteMorph.prototype.gotoXY = function (x, y, justMe) {
    var stage = this.parentThatIsA(StageMorph),
        newX,
        newY,
        dest;

    newX = stage.center().x + (+x || 0) * stage.scale;
    newY = stage.center().y - (+y || 0) * stage.scale;

    if (this.costume) {
        dest = new Point(newX, newY).subtract(this.rotationOffset);
    } else {
        dest = new Point(newX, newY).subtract(this.extent().divideBy(2));
    }
    
    this.setPosition(dest, justMe);
    this.positionTalkBubble();

    
    tx = dest.x - this.parent.topLeft().x
    ty = dest.y - this.parent.topLeft().y
    tjump = !this.isDown;    
    //alert("jump to: " + tx + "x" + ty);
    tStitch.addPoint(tx,ty,tjump);    
};

// SpriteMorph drawing:

SpriteMorph.prototype.drawLine = function (start, dest) {
    var stagePos = this.parent.bounds.origin,
        stageScale = this.parent.scale,
        context = this.parent.penTrails().getContext('2d'),
        from = start.subtract(stagePos).divideBy(stageScale),
        to = dest.subtract(stagePos).divideBy(stageScale),
        damagedFrom = from.multiplyBy(stageScale).add(stagePos),
        damagedTo = to.multiplyBy(stageScale).add(stagePos),
        damaged = damagedFrom.rectangle(damagedTo).expandBy(
            Math.max(this.size * stageScale / 2, 1)
        ).intersect(this.parent.visibleBounds()).spread();
	
	
	
    if (this.isDown) {
        context.lineWidth = this.size;
        context.strokeStyle = this.color.toString();
        if (this.useFlatLineEnds) {
            context.lineCap = 'butt';
            context.lineJoin = 'miter';
        } else {
            context.lineCap = 'round';
            context.lineJoin = 'round';
        }
        context.beginPath();
        context.moveTo(from.x, from.y);
        context.lineTo(to.x, to.y);
        context.stroke();
        if (this.isWarped === false) {
            this.world().broken.push(damaged);
        }
    }
};

SpriteMorph.prototype.drawJumpLine = function (start, dest) {
    var stagePos = this.parent.bounds.origin,
	stageScale = this.parent.scale,
	context = this.parent.penTrails().getContext('2d'),
	from = start.subtract(stagePos).divideBy(stageScale),
	to = dest.subtract(stagePos).divideBy(stageScale),
	damagedFrom = from.multiplyBy(stageScale).add(stagePos),
	damagedTo = to.multiplyBy(stageScale).add(stagePos),
	damaged = damagedFrom.rectangle(damagedTo).expandBy(
		Math.max(this.size * stageScale / 2, 1)
	).intersect(this.parent.visibleBounds()).spread();
	
	context.lineWidth = this.size;
	context.strokeStyle = new Color(255, 0, 0).toString();
	context.lineCap = 'round';
	context.lineJoin = 'round';
	context.beginPath();
	context.moveTo(from.x, from.y);
	context.lineTo(to.x, to.y);
	context.stroke();
	if (this.isWarped === false) {
		this.world().broken.push(damaged);
	}

};

SpriteMorph.prototype.drawStitch = function (dest) {
	//dest = dest.subtract(this.topLeft());
	var s = tStitch.draw_stitch_len;
    var stagePos = this.parent.bounds.origin,
        stageScale = this.parent.scale,
        context = this.parent.penTrails().getContext('2d'),
        to = dest.subtract(stagePos).divideBy(stageScale),
        damagedFrom = new Point(to.x-s,to.y-s).multiplyBy(stageScale).add(stagePos),
        damagedTo = new Point(to.x+s,to.y+s).multiplyBy(stageScale).add(stagePos),
        damaged = damagedFrom.rectangle(damagedTo).expandBy(
            Math.max(this.size * stageScale / 2, 1)
        ).intersect(this.parent.visibleBounds()).spread();

        context.lineWidth = this.size;
        context.strokeStyle = new Color(0, 0, 255).toString();
        context.lineCap = 'round';
        context.lineJoin = 'round';
        
        context.beginPath();
        context.moveTo(to.x - s, to.y - s );
        context.lineTo(to.x + s, to.y + s);
        context.stroke();
        
        context.beginPath();
        context.moveTo(to.x - s, to.y + s);
        context.lineTo(to.x + s, to.y - s);
        context.stroke();
         if (this.isWarped === false) {
            this.world().broken.push(damaged);
        }
};



SpriteMorph.prototype.clear = function () {
    this.parent.clearPenTrails();
    tStitch.clearPoints();
 	if (tStitch.debug) {
		tStitch.debug_msg("",true);
	}   
    
};




// SpriteMorph motion - adjustments due to nesting

SpriteMorph.prototype.moveBy = function (delta, justMe) {
    // override the inherited default to make sure my parts follow
    // unless it's justMe (a correction)
    var start = this.isDown && !justMe && this.parent ?
            this.rotationCenter() : null;     
    
    // add stitch controls
    if (this.parent) {
		if (this.parent.penTrails()) {
			origin = this.rotationCenter();
		}
	}	
	
	SpriteMorph.uber.moveBy.call(this, delta);

	 // add stitch controls
    if (this.parent) {
		if (this.parent.penTrails() && origin.x > 100) {
 			//alert(origin.x);	
			if (tStitch.draw_stitches)  {
				this.drawStitch(this.rotationCenter());
			}		
			if (tStitch.draw_jumps && !this.isDown) {
				this.drawJumpLine(origin,this.rotationCenter());	
			}
		}
	}	
	
	
    if (start) {
        this.drawLine(start, this.rotationCenter());
    }
    if (!justMe) {
        this.parts.forEach(function (part) {
            part.moveBy(delta);
        });
    }
};

/*
// Definition of new block categories
SpriteMorph.prototype.categories =
    [
        'motion',
        'control',
        'shapes',
		'colors',
        'sensing',
        'operators',
        'variables',
        'lists',
        'my blocks'
    ];

SpriteMorph.prototype.blockColor = {
    motion : new Color(74, 108, 212),
    shapes : new Color(143, 86, 227),
	colors : new Color(207, 74, 217),
	sound : new Color(207, 74, 217), // we need to keep this color for the zoom blocks dialog
    control : new Color(230, 168, 34),
    sensing : new Color(4, 148, 220),
    operators : new Color(98, 194, 19),
    variables : new Color(243, 118, 29),
    lists : new Color(217, 77, 17),
    other : new Color(150, 150, 150),
    'my blocks': new Color(150, 150, 60),
};

// now move also "make a block to 'my blocks'

*/