/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
</copyright> */

var MaterialParser = require("js/lib/rdge/materials/material-parser").MaterialParser;
var Material = require("js/lib/rdge/materials/material").Material;
///////////////////////////////////////////////////////////////////////
// Class GLMaterial
//      RDGE representation of a material.
///////////////////////////////////////////////////////////////////////
var CloudMaterial = function CloudMaterial() {
    ///////////////////////////////////////////////////////////////////////
    // Instance variables
    ///////////////////////////////////////////////////////////////////////
    this._name = "CloudMaterial";
    this._shaderName = "cloud";

    this._texMap = 'assets/images/cloud2.jpg';
    this._diffuseColor = [0.5, 0.5, 0.5, 0.5];

    this._time = 0.0;
    this._dTime = 0.01;

    ///////////////////////////////////////////////////////////////////////
    // Property Accessors
    ///////////////////////////////////////////////////////////////////////
    this.getName = function () { return this._name; };
    this.getShaderName = function () { return this._shaderName; };

    this.getTextureMap = function () { return this._propValues[this._propNames[0]] ? this._propValues[this._propNames[0]].slice() : null };
    this.setTextureMap = function (m) { this._propValues[this._propNames[0]] = m ? m.slice(0) : null; this.updateTexture(); };

    this.setDiffuseColor = function (c) { this._propValues[this._propNames[1]] = c.slice(0); this.updateColor(); };
    this.getDiffuseColor = function () { return this._propValues[this._propNames[1]] ? this._propValues[this._propNames[1]].slice() : null; };

    this.isAnimated = function () { return true; };

    ///////////////////////////////////////////////////////////////////////
    // Material Property Accessors
    ///////////////////////////////////////////////////////////////////////
    this._propNames = ["texmap", "diffusecolor"];
    this._propLabels = ["Texture map", "Diffuse Color"];
    this._propTypes = ["file", "color"];
    this._propValues = [];

    this._propValues[this._propNames[0]] = this._texMap.slice(0);
    this._propValues[this._propNames[1]] = this._diffuseColor.slice();

    this.setProperty = function (prop, value) {
        if (prop === 'color') prop = 'diffusecolor';

        // make sure we have legitimate imput
        var ok = this.validateProperty(prop, value);
        if (!ok) {
            console.log("invalid property in Radial Gradient Material:" + prop + " : " + value);
        }

        switch (prop) {
            case "texmap":
                this.setTextureMap(value);
                break;

            case "diffusecolor":
                this.setDiffuseColor(value);
                break;

            case "color":
                break;
        }
    };
    ///////////////////////////////////////////////////////////////////////


    ///////////////////////////////////////////////////////////////////////
    // Methods
    ///////////////////////////////////////////////////////////////////////
    // duplicate method required
    this.dup = function (world) {
        // save the world
        if (world) this.setWorld(world);

        // allocate a new uber material
        var newMat = new CloudMaterial();

        // copy over the current values;
        var propNames = [], propValues = [], propTypes = [], propLabels = [];
        this.getAllProperties(propNames, propValues, propTypes, propLabels);
        var n = propNames.length;
        for (var i = 0; i < n; i++) {
            newMat.setProperty(propNames[i], propValues[i]);
        }

        return newMat;
    };

    this.init = function (world) {
        // save the world
        if (world) this.setWorld(world);

        // this variable declared above is inherited set to a smaller delta.
        // the cloud material runs a little faster
        this._dTime = 0.01;

        // set up the shader
        this._shader = new RDGE.jshader();
        this._shader.def = cloudMaterialDef;
        this._shader.init();

        // set up the material node
        this._materialNode = RDGE.createMaterialNode("cloudMaterial" + "_" + world.generateUniqueNodeID());
        this._materialNode.setShader(this._shader);

        this._time = 0;
        if (this._shader && this._shader['default']) {
            this._shader['default'].u_time.set([this._time]);
            this._shader['default'].u_DiffuseColor.set(this._diffuseColor);
        }

        // set the shader values in the shader
        this.updateTexture();
        this.update(0);
    };

    this.updateColor = function () {
        var material = this._materialNode;
        if (material) {
            var technique = material.shaderProgram['default'];
            var renderer = RDGE.globals.engine.getContext().renderer;
            if (renderer && technique) {
                var color = this._propValues[this._propNames[1]];
                technique.u_DiffuseColor.set(this._diffuseColor);
            }
        }
    };

    this.updateTexture = function () {
        var material = this._materialNode;
        if (material) {
            var technique = material.shaderProgram['default'];
            var renderer = RDGE.globals.engine.getContext().renderer;
            if (renderer && technique) {
                var texMapName = this._propValues[this._propNames[0]];
                var wrap = 'REPEAT', mips = true;
                var tex = this.loadTexture(texMapName, wrap, mips);

                if (tex) {
                    technique.u_tex0.set(tex);
                }
            }
        }
    };

    this.update = function (time) {
        var material = this._materialNode;
        if (material) {
            var technique = material.shaderProgram['default'];
            var renderer = RDGE.globals.engine.getContext().renderer;
            if (renderer && technique) {
                if (this._shader && this._shader['default']) {
                    this._shader['default'].u_time.set([this._time]);
                }
                this._time += this._dTime;

                if (this._time > 200.0) this._time = 0.0;
            }
        }
    };

    // JSON export
    this.exportJSON = function () {
        var jObj =
		{
		    'material': this.getShaderName(),
		    'name': this.getName(),
		    'texture': this._propValues[this._propNames[0]]
		};

        return jObj;
    };

    this.importJSON = function (jObj) {
        if (this.getShaderName() != jObj.material) throw new Error("ill-formed material");
        this.setName(jObj.name);

        try {
            this._propValues[this._propNames[0]] = jObj.texture;
        }
        catch (e) {
            throw new Error("could not import material: " + jObj);
        }
    };


    this.export = function () {
        // every material needs the base type and instance name
        var exportStr = "material: " + this.getShaderName() + "\n";
        exportStr += "name: " + this.getName() + "\n";

        var world = this.getWorld();
        if (!world)
            throw new Error("no world in material.export, " + this.getName());

        var texMapName = this._propValues[this._propNames[0]];
        exportStr += "texture: " + texMapName + "\n";

        // every material needs to terminate like this
        exportStr += "endMaterial\n";

        return exportStr;
    };

    this.import = function (importStr) {
        var pu = new MaterialParser(importStr);
        var material = pu.nextValue("material: ");
        if (material != this.getShaderName()) throw new Error("ill-formed material");
        this.setName(pu.nextValue("name: "));

        var rtnStr;
        try {
            this._propValues[this._propNames[0]] = pu.nextValue("texture: ");

            var endKey = "endMaterial\n";
            var index = importStr.indexOf(endKey);
            index += endKey.length;
            rtnStr = importStr.substr(index);
        }
        catch (e) {
            throw new Error("could not import material: " + importStr);
        }

        return rtnStr;
    };
};

///////////////////////////////////////////////////////////////////////////////////////
// RDGE shader

// shader spec (can also be loaded from a .JSON file, or constructed at runtime)
var cloudMaterialDef =
{ 'shaders':
	{
	    'defaultVShader': "assets/shaders/Cloud.vert.glsl",
	    'defaultFShader': "assets/shaders/Cloud.frag.glsl"
	},
    'techniques':
	{
	    'default':
		[
			{
			    'vshader': 'defaultVShader',
			    'fshader': 'defaultFShader',
			    // attributes
			    'attributes':
				{
				    'vert': { 'type': 'vec3' },
				    'normal': { 'type': 'vec3' },
				    'texcoord': { 'type': 'vec2' }
				},
			    // parameters
			    'params':
				{
				    'u_tex0': { 'type': 'tex2d' },
				    'u_time': { 'type': 'float' },
				    'u_DiffuseColor': { 'type': 'vec4' }
				},

			    // render states
			    'states':
				{
				    'depthEnable': true,
				    'offset': [1.0, 0.1]
				}
			}
		]
	}
};




CloudMaterial.prototype = new Material();

if (typeof exports === "object") {
    exports.CloudMaterial = CloudMaterial;
}