'use strict'

utils = require 'src/utils'
PIXI = require './pixi.lib.js'

unless window.isFake
    PI_2 = Math.PI * 2

    PIXI.DisplayObject::displayObjectUpdateTransform = PIXI.DisplayObject::updateTransform = ->
        pt = @parent.worldTransform
        wt = @worldTransform
        data = @_data

        # size
        a = @scale.x
        d = @scale.y

        if data isnt undefined
            # translate to origin
            originX = data.width / a / 2
            originY = data.height / d / 2
            tx = data.x + a * originX
            ty = data.y + d * originY

            # scale
            a *= data.scale
            d *= data.scale

            # rotation
            if @rotation % PI_2
                if @rotation isnt @rotationCache
                    @rotationCache = @rotation
                    @_sr = Math.sin @rotation
                    @_cr = Math.cos @rotation

                # rotate
                ac = a
                dc = d

                a = ac * @_cr
                b = dc * @_sr
                c = ac * -@_sr
                d = dc * @_cr

                # translate to position
                tx += a * -originX + c * -originY
                ty += b * -originX + d * -originY

                # multiply by parent
                wt.a = a * pt.a + b * pt.c
                wt.b = a * pt.b + b * pt.d
                wt.c = c * pt.a + d * pt.c
                wt.d = c * pt.b + d * pt.d
                wt.tx = tx * pt.a + ty * pt.c + pt.tx
                wt.ty = tx * pt.b + ty * pt.d + pt.ty
            else
                # translate to position
                tx += a * -originX
                ty += d * -originY

                # multiply by parent
                wt.a = a * pt.a
                wt.b = a * pt.b
                wt.c = d * pt.c
                wt.d = d * pt.d
                wt.tx = tx * pt.a + ty * pt.c + pt.tx
                wt.ty = tx * pt.b + ty * pt.d + pt.ty

            # calculate alpha
            @worldAlpha = @alpha * @parent.worldAlpha
        else
            # multiply by parent
            wt.a = pt.a * a
            wt.b = pt.b * a
            wt.c = pt.c * d
            wt.d = pt.d * d
            wt.tx = pt.tx
            wt.ty = pt.ty

            # calculate alpha
            @worldAlpha = @parent.worldAlpha
        return

SHEET = "
#hatchery {
    visibility: hidden;
}
#hatchery span {
    display: inline-block;
}
body {
    margin: 0;
    overflow: hidden;
}
html, body {
    height: 100%;
}
canvas {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateZ(0);
    -moz-perspective: 1px; /* Firefox */
    -webkit-transform-style: preserve-3d; /* Safari */
    -webkit-perspective: 1px; /* Safari */
    -webkit-backface-visibility: hidden; /* Safari, Chrome */
}
"

pixelRatio = window.devicePixelRatio or 1

unless window.isFake
    stage = new PIXI.Container
    stage.interactive = false
    renderer = PIXI.autoDetectRenderer innerWidth, innerHeight,
        resolution: pixelRatio
        antialias: false
        backgroundColor: 0xFFFFFF

    if renderer.context
        renderer.context.mozImageSmoothingEnabled = false
        renderer.context.webkitImageSmoothingEnabled = false

window.addEventListener 'resize', ->
    renderer.resize innerWidth, innerHeight

# body
hatchery = document.createElement 'div'
hatchery.setAttribute 'id', 'hatchery'
window.addEventListener 'load', ->
    document.body.appendChild hatchery
    document.body.appendChild renderer.view

    styles = document.createElement 'style'
    styles.innerHTML = SHEET
    document.body.appendChild styles

module.exports = (impl) ->
    {items} = impl

    impl._hatchery = hatchery
    impl._dirty = true
    impl._pixiStage = stage
    impl.pixelRatio = pixelRatio

    utils.merge impl.utils, require('../css/utils')

    # render loop
    window.addEventListener 'load', ->
        vsync = ->
            if impl._dirty
                impl._dirty = false
                renderer.render stage
            requestAnimationFrame vsync

        requestAnimationFrame vsync

    window.addEventListener 'resize', resize = ->
        item = impl.window
        return unless item

        item.width = innerWidth
        item.height = innerHeight

    Types:
        Item: require './level0/item'
        Image: require './level0/image'
        Text: require './level0/text'
        Device: require '../css/level0/device'
        Screen: require '../css/level0/screen'
        Navigator: require '../css/level0/navigator'
        FontLoader: require '../css/level0/loader/font'
        ResourcesLoader: require '../css/level0/loader/resources'

    setWindow: (item) ->
        unless window.isFake
            if stage.children.length
                stage.removeChildren()

            resize()
            stage.addChild item._impl.elem
        return