/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.5
import QtQuick.Layouts 1.3
import QtQuick.Controls 1.4
import QtQuick.Extras 1.4
import QtLocation 5.6
import QtPositioning 5.5
import "../helper.js" as Helper

//! [top]
Map {
    id: map
//! [top]
    property variant markers
    property variant mapItems
    property variant location
    property int markerCounter: 0 // counter for total amount of markers. Resets to 0 when number of markers = 0
    property int currentMarker
    property int lastX : -1
    property int lastY : -1
    property int pressX : -1
    property int pressY : -1
    property int jitterThreshold : 30
    property bool followme: true
    property variant scaleLengths: [5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000, 200000, 500000, 1000000, 2000000]
    property alias routeQuery: routeQuery
    property alias routeModel: routeModel
    property alias geocodeModel: geocodeModel

    signal showGeocodeInfo()
    signal geocodeFinished()
    signal routeError()
    signal coordinatesCaptured(double latitude, double longitude)
    signal showMainMenu(variant coordinate)
    signal showMarkerMenu(variant coordinate)
    signal showRouteMenu(variant coordinate)
    signal showPointMenu(variant coordinate)
    signal showRouteList()


    center {
        // null island
        latitude: 0
        longitude: 0
    }

    function geocodeMessage()
    {
        var street, district, city, county, state, countryCode, country, postalCode, latitude, longitude, text
        latitude = Math.round(geocodeModel.get(0).coordinate.latitude * 10000) / 10000
        longitude =Math.round(geocodeModel.get(0).coordinate.longitude * 10000) / 10000
        street = geocodeModel.get(0).address.street
        district = geocodeModel.get(0).address.district
        city = geocodeModel.get(0).address.city
        county = geocodeModel.get(0).address.county
        state = geocodeModel.get(0).address.state
        countryCode = geocodeModel.get(0).address.countryCode
        country = geocodeModel.get(0).address.country
        postalCode = geocodeModel.get(0).address.postalCode

        text = "<b>Latitude:</b> " + latitude + "<br/>"
        text +="<b>Longitude:</b> " + longitude + "<br/>" + "<br/>"
        if (street) text +="<b>Street: </b>"+ street + " <br/>"
        if (district) text +="<b>District: </b>"+ district +" <br/>"
        if (city) text +="<b>City: </b>"+ city + " <br/>"
        if (county) text +="<b>County: </b>"+ county + " <br/>"
        if (state) text +="<b>State: </b>"+ state + " <br/>"
        if (countryCode) text +="<b>Country code: </b>"+ countryCode + " <br/>"
        if (country) text +="<b>Country: </b>"+ country + " <br/>"
        if (postalCode) text +="<b>PostalCode: </b>"+ postalCode + " <br/>"
        return text
    }

    function calculateScale()
    {
        var coord1, coord2, dist, text, f
        f = 0
        coord1 = map.toCoordinate(Qt.point(0,scale.y))
        coord2 = map.toCoordinate(Qt.point(0+scaleImage.sourceSize.width,scale.y))
        dist = Math.round(coord1.distanceTo(coord2))

        if (dist === 0) {
            // not visible
        } else {
            for (var i = 0; i < scaleLengths.length-1; i++) {
                if (dist < (scaleLengths[i] + scaleLengths[i+1]) / 2 ) {
                    f = scaleLengths[i] / dist
                    dist = scaleLengths[i]
                    break;
                }
            }
            if (f === 0) {
                f = dist / scaleLengths[i]
                dist = scaleLengths[i]
            }
        }

        text = Helper.formatDistance(dist)
        scaleImage.width = (scaleImage.sourceSize.width * f) - 2 * scaleImageLeft.sourceSize.width
        scaleText.text = text
    }

    function deleteMarkers()
    {
        var count = map.markers.length
        for (var i = 0; i<count; i++){
            map.removeMapItem(map.markers[i])
            map.markers[i].destroy()
        }
        map.markers = []
        markerCounter = 0
    }

    function deleteMapItems()
    {
        var count = map.mapItems.length
        for (var i = 0; i<count; i++){
            map.removeMapItem(map.mapItems[i])
            map.mapItems[i].destroy()
        }
        map.mapItems = []
    }

    function addMarker()
    {
        var count = map.markers.length
        markerCounter++
        var marker = Qt.createQmlObject ('Marker {}', map)
        map.addMapItem(marker)
        marker.z = map.z+1
        marker.coordinate = mouseArea.lastCoordinate

        //update list of markers
        var myArray = new Array()
        for (var i = 0; i<count; i++){
            myArray.push(markers[i])
        }
        myArray.push(marker)
        markers = myArray
    }

    function addGeoItem(item)
    {
        var count = map.mapItems.length
        var co = Qt.createComponent(item+'.qml')
        if (co.status == Component.Ready) {
            var o = co.createObject(map)
            o.setGeometry(map.markers, currentMarker)
            map.addMapItem(o)
            //update list of items
            var myArray = new Array()
            for (var i = 0; i<count; i++){
                myArray.push(mapItems[i])
            }
            myArray.push(o)
            mapItems = myArray

        } else {
            console.log(item + " is not supported right now, please call us later.")
        }
    }

    function deleteMarker(index)
    {
        //update list of markers
        var myArray = new Array()
        var count = map.markers.length
        for (var i = 0; i<count; i++){
            if (index != i) myArray.push(map.markers[i])
        }

        map.removeMapItem(map.markers[index])
        map.markers[index].destroy()
        map.markers = myArray
        if (markers.length == 0) markerCounter = 0
    }

    function calculateMarkerRoute()
    {
        routeQuery.clearWaypoints();
        for (var i = currentMarker; i< map.markers.length; i++){
            routeQuery.addWaypoint(markers[i].coordinate)
        }
        routeQuery.travelModes = RouteQuery.CarTravel
        routeQuery.routeOptimizations = RouteQuery.ShortestRoute
        routeQuery.setFeatureWeight(0, 0)
        routeModel.update();
    }

    function calculateCoordinateRoute(startCoordinate, endCoordinate)
    {
        //! [routerequest0]
        // clear away any old data in the query
        routeQuery.clearWaypoints();

        // add the start and end coords as waypoints on the route
        routeQuery.addWaypoint(startCoordinate)
        routeQuery.addWaypoint(endCoordinate)
        routeQuery.travelModes = RouteQuery.CarTravel
        routeQuery.routeOptimizations = RouteQuery.FastestRoute

        //! [routerequest0]

        //! [routerequest0 feature weight]
        for (var i=0; i<9; i++) {
            routeQuery.setFeatureWeight(i, 0)
        }
        //for (var i=0; i<routeDialog.features.length; i++) {
        //    map.routeQuery.setFeatureWeight(routeDialog.features[i], RouteQuery.AvoidFeatureWeight)
        //}
        //! [routerequest0 feature weight]

        //! [routerequest1]
        routeModel.update();

        //! [routerequest1]
        //! [routerequest2]
        // center the map on the start coord
        map.center = startCoordinate;
        //! [routerequest2]
    }

    function geocode(fromAddress)
    {
        //! [geocode1]
        // send the geocode request
        geocodeModel.query = fromAddress
        geocodeModel.update()
        //! [geocode1]
    }

    function updateCompass(heading)
    {
        compass.rotation = heading - 90
    }

//! [coord]
    zoomLevel: (maximumZoomLevel - minimumZoomLevel)/2
//! [coord]

//! [mapnavigation]
    // Enable pan, flick, and pinch gestures to zoom in and out
    gesture.acceptedGestures: MapGestureArea.PanGesture | MapGestureArea.FlickGesture | MapGestureArea.PinchGesture
    gesture.flickDeceleration: 3000
    gesture.enabled: !map.followme
//! [mapnavigation]
    focus: true
    onCopyrightLinkActivated: Qt.openUrlExternally(link)

    onCenterChanged:{
        scaleTimer.restart()
    }

    onZoomLevelChanged:{
        scaleTimer.restart()
    }

    onWidthChanged:{
        scaleTimer.restart()
    }

    onHeightChanged:{
        scaleTimer.restart()
    }

    Component.onCompleted: {
        markers = new Array();
        mapItems = new Array();
    }

    Keys.onPressed: {
        if (event.key === Qt.Key_Plus) {
            map.zoomLevel++;
        } else if (event.key === Qt.Key_Minus) {
            map.zoomLevel--;
        } else if (event.key === Qt.Key_Left || event.key === Qt.Key_Right ||
                   event.key === Qt.Key_Up   || event.key === Qt.Key_Down) {
            var dx = 0;
            var dy = 0;

            switch (event.key) {

            case Qt.Key_Left: dx = map.width / 4; break;
            case Qt.Key_Right: dx = -map.width / 4; break;
            case Qt.Key_Up: dy = map.height / 4; break;
            case Qt.Key_Down: dy = -map.height / 4; break;

            }

            var mapCenterPoint = Qt.point(map.width / 2.0 - dx, map.height / 2.0 - dy);
            map.center = map.toCoordinate(mapCenterPoint);
        }
    }

    /* @todo
    Binding {
        target: map
        property: 'center'
        when: followme
    }*/

    MapQuickItem {
        id: locationPoint
        sourceItem: Image {
                id: compass
                width: 100 * (map.zoomLevel / map.maximumZoomLevel)
                height: 50 * (map.zoomLevel / map.maximumZoomLevel)
                source: "../resources/car.png"
            }
        coordinate: location
        opacity: 1.0
        anchorPoint: Qt.point(sourceItem.width/2, sourceItem.height/2)
    }

    Slider {
        id: zoomSlider;
        z: map.z + 3
        minimumValue: map.minimumZoomLevel;
        maximumValue: map.maximumZoomLevel;
        anchors.margins: 10
        anchors.bottom: scale.top
        anchors.top: parent.top
        anchors.right: parent.right
        orientation : Qt.Vertical
        value: map.zoomLevel
        onValueChanged: {
            if (value >= 0)
                map.zoomLevel = value
        }
    }

    GridLayout {
        z: map.z + 3
        columns: 1
        width: 300
        height: 300

        ToggleButton {
            id: followme
            text: "GeoLocation Pan"
            checked: map.followme
            Layout.fillWidth: true
            Layout.fillHeight: true
            onClicked: {
                map.followme = !map.followme
            }
        }

        Button {
            text: "Lookup Route"
            Layout.fillWidth: true
            Layout.fillHeight: true
            onClicked: {
                stackView.pop({item:page, immediate: true})
                stackView.push(Qt.resolvedUrl("../forms/RouteAddress.qml"),
                                     { "plugin": map.plugin,
                                       "toAddress": toAddress,
                                       "fromCoordinate": map.location})
                stackView.currentItem.showRoute.connect(map.calculateCoordinateRoute)
                stackView.currentItem.showMessage.connect(stackView.showMessage)
                stackView.currentItem.closeForm.connect(stackView.closeForm)
            }
        }

        Button {
            text: "Reverse GeoCode"
            Layout.fillWidth: true
            Layout.fillHeight: true
            onClicked: {
                stackView.pop({item:page, immediate: true})
                stackView.push(Qt.resolvedUrl("../forms/ReverseGeocode.qml"),
                                      { "coordinate": map.location})
                stackView.currentItem.showPlace.connect(map.geocode)
                stackView.currentItem.closeForm.connect(stackView.closeForm)
            }
        }

        Button {
            text: "Show Route List"
            Layout.fillWidth: true
            Layout.fillHeight: true
            onClicked: {
                stackView.showRouteListPage()
            }
        }

        Button {
            text: "Clear Route"
            Layout.fillWidth: true
            Layout.fillHeight: true
            enabled: map.routeModel.count
            onClicked: {
                map.routeModel.reset();
                map.zoomLevel = map.maximumZoomLevel
                map.center = map.location
            }
        }
    }

    Item {
        id: scale
        z: map.z + 3
        visible: scaleText.text != "0 m"
        anchors.bottom: parent.bottom;
        anchors.right: parent.right
        anchors.margins: 20
        height: scaleText.height * 2
        width: scaleImage.width

        Image {
            id: scaleImageLeft
            source: "../resources/scale_end.png"
            anchors.bottom: parent.bottom
            anchors.right: scaleImage.left
        }
        Image {
            id: scaleImage
            source: "../resources/scale.png"
            anchors.bottom: parent.bottom
            anchors.right: scaleImageRight.left
        }
        Image {
            id: scaleImageRight
            source: "../resources/scale_end.png"
            anchors.bottom: parent.bottom
            anchors.right: parent.right
        }
        Label {
            id: scaleText
            color: "#004EAE"
            anchors.centerIn: parent
            text: "0 m"
        }
        Component.onCompleted: {
            map.calculateScale();
        }
    }

    //! [routemodel0]
    RouteModel {
        id: routeModel
        plugin : map.plugin
        query:  RouteQuery {
            id: routeQuery
        }
        onStatusChanged: {
            if (status == RouteModel.Ready) {
                switch (count) {
                case 0:
                    // technically not an error
                    map.routeError()
                    break
                case 1:
                    map.showRouteList()
                    break
                }
            } else if (status == RouteModel.Error) {
                map.routeError()
            }
        }
    }
    //! [routemodel0]

    //! [routedelegate0]
    Component {
        id: routeDelegate

        MapRoute {
            id: route
            route: routeData
            line.color: "#46a2da"
            line.width: 5
            smooth: true
            opacity: 0.8
     //! [routedelegate0]
            MouseArea {
                id: routeMouseArea
                anchors.fill: parent
                hoverEnabled: false
                property variant lastCoordinate

                onPressed : {
                    map.lastX = mouse.x + parent.x
                    map.lastY = mouse.y + parent.y
                    map.pressX = mouse.x + parent.x
                    map.pressY = mouse.y + parent.y
                    lastCoordinate = map.toCoordinate(Qt.point(mouse.x, mouse.y))
                }

                onPositionChanged: {
                    if (mouse.button == Qt.LeftButton) {
                        map.lastX = mouse.x + parent.x
                        map.lastY = mouse.y + parent.y
                    }
                }

                onPressAndHold:{
                    if (Math.abs(map.pressX - parent.x- mouse.x ) < map.jitterThreshold
                            && Math.abs(map.pressY - parent.y - mouse.y ) < map.jitterThreshold) {
                        showRouteMenu(lastCoordinate);
                    }
                }

            }
    //! [routedelegate1]
        }
    }
    //! [routedelegate1]

    //! [geocodemodel0]
    GeocodeModel {
        id: geocodeModel
        plugin: map.plugin
        onStatusChanged: {
            if ((status == GeocodeModel.Ready) || (status == GeocodeModel.Error))
                map.geocodeFinished()
        }
        onLocationsChanged:
        {
            if (count == 1) {
                map.center.latitude = get(0).coordinate.latitude
                map.center.longitude = get(0).coordinate.longitude
            }
        }
    }
    //! [geocodemodel0]

    //! [pointdel0]
    Component {
        id: pointDelegate

        MapCircle {
            id: point
            color: "#46a2da"
            border.color: "#190a33"
            border.width: 2
            smooth: true
            opacity: 0.25
            center: locationData.coordinate
            //! [pointdel0]
            MouseArea {
                anchors.fill:parent
                id: circleMouseArea
                hoverEnabled: false
                property variant lastCoordinate

                onPressed : {
                    map.lastX = mouse.x + parent.x
                    map.lastY = mouse.y + parent.y
                    map.pressX = mouse.x + parent.x
                    map.pressY = mouse.y + parent.y
                    lastCoordinate = map.toCoordinate(Qt.point(mouse.x, mouse.y))
                }

                onPositionChanged: {
                    if (Math.abs(map.pressX - parent.x- mouse.x ) > map.jitterThreshold ||
                            Math.abs(map.pressY - parent.y -mouse.y ) > map.jitterThreshold) {
                        if (pressed) parent.radius = parent.center.distanceTo(
                                         map.toCoordinate(Qt.point(mouse.x, mouse.y)))
                    }
                    if (mouse.button == Qt.LeftButton) {
                        map.lastX = mouse.x + parent.x
                        map.lastY = mouse.y + parent.y
                    }
                }

                onPressAndHold:{
                    if (Math.abs(map.pressX - parent.x- mouse.x ) < map.jitterThreshold
                            && Math.abs(map.pressY - parent.y - mouse.y ) < map.jitterThreshold) {
                        showPointMenu(lastCoordinate);
                    }
                }
            }
    //! [pointdel1]
        }
    }
    //! [pointdel1]

    //! [routeview0]
    MapItemView {
        model: routeModel
        delegate: routeDelegate
    //! [routeview0]
        autoFitViewport: true
    //! [routeview1]
    }
    //! [routeview1]

    //! [geocodeview]
    MapItemView {
        model: geocodeModel
        delegate: pointDelegate
    }
    //! [geocodeview]

    Timer {
        id: scaleTimer
        interval: 100
        running: false
        repeat: false
        onTriggered: {
            map.calculateScale()
        }
    }

    MouseArea {
        id: mouseArea
        property variant lastCoordinate
        anchors.fill: parent
        acceptedButtons: Qt.LeftButton | Qt.RightButton

        onPressed : {
            map.lastX = mouse.x
            map.lastY = mouse.y
            map.pressX = mouse.x
            map.pressY = mouse.y
            lastCoordinate = map.toCoordinate(Qt.point(mouse.x, mouse.y))
        }

        onPositionChanged: {
            if (mouse.button == Qt.LeftButton) {
                map.lastX = mouse.x
                map.lastY = mouse.y
            }
        }

        onDoubleClicked: {
            var mouseGeoPos = map.toCoordinate(Qt.point(mouse.x, mouse.y));
            var preZoomPoint = map.fromCoordinate(mouseGeoPos, false);
            if (mouse.button === Qt.LeftButton) {
                map.zoomLevel++;
            } else if (mouse.button === Qt.RightButton) {
                map.zoomLevel--;
            }
            var postZoomPoint = map.fromCoordinate(mouseGeoPos, false);
            var dx = postZoomPoint.x - preZoomPoint.x;
            var dy = postZoomPoint.y - preZoomPoint.y;

            var mapCenterPoint = Qt.point(map.width / 2.0 + dx, map.height / 2.0 + dy);
            map.center = map.toCoordinate(mapCenterPoint);

            lastX = -1;
            lastY = -1;
        }

        onPressAndHold:{
            if (Math.abs(map.pressX - mouse.x ) < map.jitterThreshold
                    && Math.abs(map.pressY - mouse.y ) < map.jitterThreshold) {
                showMainMenu(lastCoordinate);
            }
        }
    }
//! [end]
}
//! [end]