/*
 * Copyright (c) 2018 TOYOTA MOTOR CORPORATION
 * Copyright (C) 2016 The Qt Company Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import QtQuick 2.6
import QtQuick.Layouts 1.1
import QtQuick.Controls 2.0
import QtWebSockets 1.0

ApplicationWindow {
    id: window

    title: "HUD Speed Demo"
    width: 480
    height: 180
    visible: true

    property string api_str: "low-can"
    property string verb_str: "subscribe"
    property var msgid_enu: { "call":2, "retok":3, "reterr":4, "event":5 }
    property string request_str: ""
    property string status_str: ""
	
    property double speed_val: 0

    WebSocket {
        id: websocket
        url: bindingAddress
		
        onStatusChanged: {
            if (websocket.status === WebSocket.Error){
                console.log ("Error: " + websocket.errorString)
                websocket.active = false
            }else if (websocket.status === WebSocket.Open){
                console.log ("Socket Open")
                do_subscribe()
            }else if (websocket.status === WebSocket.Closed){
                console.log ("Socket closed")
            }
        }
        onTextMessageReceived: {
            var message_json = JSON.parse(message)

            console.log ("Raw response: " + message)
            console.log ("JSON response: " + message_json)

            if (message_json[0] === msgid_enu.event){

                //get speed from low-can app
				var property_name = message_json[2].event.split("/")[1]
                if(property_name === "messages.vehicle.average.speed") {
                    speed_val = message_json[2].data.value
                    console.log ("speed_val: " + speed_val)
                }     
            }
            else{
                if (message_json[0] !== msgid_enu.retok) {
                    console.log ("Return value is not ok !")
                    return
                }
            }
			/* refresh happen */
        }
        active: true
    }
	//subscribe
    function do_subscribe() {
        request_str ='[' + msgid_enu.call + ',"99998","' + api_str +'/'+ verb_str +'",{ \"event\" : \"vehicle.average.speed\" } ]';
        websocket.sendTextMessage (request_str)
    }

    Rectangle {
        color: '#111111'
        anchors.fill: parent
        Label {
            id: speed
            anchors.left: parent.left
            anchors.top: parent.top
            text: speed_val.toFixed(0)
	        font.pixelSize: parent.height*4/5
            color: "white"
        }
        Label {
            id: unit
            anchors.right: parent.right
            anchors.bottom: parent.bottom
            text: 'MPH'
            font.pixelSize: parent.height/5
        }
    }
}