'use strict'

{assert} = console

utils = require 'src/utils'
signal = require 'src/signal'

module.exports = (Renderer) ->
    impl = abstractImpl = require './impl/base'
    impl.Renderer = Renderer
    impl.window = null
    signal.create impl, 'onWindowReady'

    TYPES = ['Item', 'Image', 'Text', 'Native', 'FontLoader', 'ResourcesLoader',
             'Device', 'Screen', 'Navigator',

             'Rectangle', 'Grid', 'Column', 'Row', 'Flow',
             'Animation', 'PropertyAnimation', 'NumberAnimation']

    ABSTRACT_TYPES =
        'Class': true
        'Transition': true

    platformImpl = do ->
        r = null
        if utils.isBrowser and NEFT_TYPE? and NEFT_TYPE is 'game'
            r ?= require('./impl/pixi') impl
        if utils.isBrowser
            r ?= require('./impl/css') impl
        if utils.isQt
            r ?= require('./impl/qt') impl
        if utils.isAndroid or utils.isIOS
            r ?= require('./impl/native') impl
        r

    # merge types
    for name in TYPES
        type = impl.Types[name] = impl.Types[name](impl)
        utils.merge impl, type

    if platformImpl
        utils.mergeDeep impl, platformImpl

    # merge types
    for name in TYPES
        if typeof impl.Types[name] is 'function'
            type = impl.Types[name] = impl.Types[name](impl)
            utils.merge impl, type

    # init createData
    for name in TYPES
        if impl.Types[name].createData
            impl.Types[name].createData = impl.Types[name].createData()

    # merge modules
    for name, extra of impl.Extras
        extra = impl.Extras[name] = extra(impl)
        utils.merge impl, extra

    impl.createObject = (object, type) ->
        unless ABSTRACT_TYPES[type]
            obj = object
            while type and not impl.Types[type]?
                obj = Object.getPrototypeOf(obj)
                type = obj.constructor.__name__

        object._impl = impl.Types[type]?.createData?() or {}
        object._impl.bindings ?= {}
        Object.seal object._impl

    impl.initializeObject = (object, type) ->
        unless ABSTRACT_TYPES[type]
            obj = object
            while type and not impl.Types[type]?
                obj = Object.getPrototypeOf(obj)
                type = obj.constructor.__name__

            impl.Types[type]?.create?.call object, object._impl

    impl.setWindow = do (_super = impl.setWindow) -> (item) ->
        utils.defineProperty impl, 'window', utils.ENUMERABLE, item
        _super.call impl, item
        impl.onWindowReady.emit()
        item.keys.focus = true

    impl.addTypeImplementation = (type, methods) ->
        impl.Types[type] = methods
        utils.merge impl, methods

    impl