/****************************************************************************
 *
 *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/


import QtQuick          2.3
import QtQuick.Controls 1.2
import QtLocation       5.3
import QtPositioning    5.3
import QtQuick.Dialogs  1.2

import QGroundControl               1.0
import QGroundControl.FlightDisplay 1.0
import QGroundControl.FlightMap     1.0
import QGroundControl.ScreenTools   1.0
import QGroundControl.Controls      1.0
import QGroundControl.Palette       1.0
import QGroundControl.Vehicle       1.0
import QGroundControl.Controllers   1.0

FlightMap {
    id:                         flightMap
    anchors.fill:               parent
    mapName:                    _mapName
    allowGCSLocationCenter:     !userPanned
    allowVehicleLocationCenter: !_keepVehicleCentered

    property alias  scaleState: mapScale.state

    property var    missionController
    property var    geoFenceController
    property var    rallyPointController
    property var    guidedActionsController
    property var    flightWidgets
    property var    rightPanelWidth
    property var    qgcView                             ///< QGCView control which contains this map

    property rect   centerViewport:             Qt.rect(0, 0, width, height)

    property var    _activeVehicle:             QGroundControl.multiVehicleManager.activeVehicle
    property var    _activeVehicleCoordinate:   _activeVehicle ? _activeVehicle.coordinate : QtPositioning.coordinate()
    property var    _gotoHereCoordinate:        QtPositioning.coordinate()
    property real   _toolButtonTopMargin:       parent.height - ScreenTools.availableHeight + (ScreenTools.defaultFontPixelHeight / 2)

    property bool   _disableVehicleTracking:    false
    property bool   _keepVehicleCentered:       _mainIsMap ? false : true

    // Track last known map position and zoom from Fly view in settings
    onZoomLevelChanged: QGroundControl.flightMapZoom = zoomLevel
    onCenterChanged:    QGroundControl.flightMapPosition = center

    // When the user pans the map we stop responding to vehicle coordinate updates until the panRecenterTimer fires
    onUserPannedChanged: {
        _disableVehicleTracking = true
        panRecenterTimer.start()
    }

    function pointInRect(point, rect) {
        return point.x > rect.x &&
                point.x < rect.x + rect.width &&
                point.y > rect.y &&
                point.y < rect.y + rect.height;
    }

    property real _animatedLatitudeStart
    property real _animatedLatitudeStop
    property real _animatedLongitudeStart
    property real _animatedLongitudeStop
    property real animatedLatitude
    property real animatedLongitude

    onAnimatedLatitudeChanged: flightMap.center = QtPositioning.coordinate(animatedLatitude, animatedLongitude)
    onAnimatedLongitudeChanged: flightMap.center = QtPositioning.coordinate(animatedLatitude, animatedLongitude)

    NumberAnimation on animatedLatitude { id: animateLat; from: _animatedLatitudeStart; to: _animatedLatitudeStop; duration: 1000 }
    NumberAnimation on animatedLongitude { id: animateLong; from: _animatedLongitudeStart; to: _animatedLongitudeStop; duration: 1000 }

    function animatedMapRecenter(fromCoord, toCoord) {
        _animatedLatitudeStart = fromCoord.latitude
        _animatedLongitudeStart = fromCoord.longitude
        _animatedLatitudeStop = toCoord.latitude
        _animatedLongitudeStop = toCoord.longitude
        animateLat.start()
        animateLong.start()
    }

    function recenterNeeded() {
        var vehiclePoint = flightMap.fromCoordinate(_activeVehicleCoordinate, false /* clipToViewport */)
        var centerViewport = Qt.rect(0, 0, width, height)
        return !pointInRect(vehiclePoint, centerViewport)
    }

    function updateMapToVehiclePosition() {
        // We let FlightMap handle first vehicle position
        if (firstVehiclePositionReceived && _activeVehicleCoordinate.isValid && !_disableVehicleTracking) {
            if (_keepVehicleCentered) {
                flightMap.center = _activeVehicleCoordinate
            } else {
                if (firstVehiclePositionReceived && recenterNeeded()) {
                    animatedMapRecenter(flightMap.center, _activeVehicleCoordinate)
                }
            }
        }
    }

    Timer {
        id:         panRecenterTimer
        interval:   10000
        running:    false

        onTriggered: {
            _disableVehicleTracking = false
            updateMapToVehiclePosition()
        }
    }

    Timer {
        interval:       500
        running:        true
        repeat:         true
        onTriggered:    updateMapToVehiclePosition()
    }

    QGCPalette { id: qgcPal; colorGroupEnabled: true }
    QGCMapPalette { id: mapPal; lightColors: isSatelliteMap }

    Connections {
        target: missionController

        onNewItemsFromVehicle: {
            var visualItems = missionController.visualItems
            if (visualItems && visualItems.count != 1) {
                mapFitFunctions.fitMapViewportToMissionItems()
                firstVehiclePositionReceived = true
            }
        }
    }

    ExclusiveGroup {
        id: _mapTypeButtonsExclusiveGroup
    }

    MapFitFunctions {
        id:                         mapFitFunctions
        map:                        _flightMap
        usePlannedHomePosition:     false
        mapMissionController:      missionController
        mapGeoFenceController:     geoFenceController
        mapRallyPointController:   rallyPointController

        property real leftToolWidth:    toolStrip.x + toolStrip.width
    }

    // Add trajectory points to the map
    MapItemView {
        model: _mainIsMap ? _activeVehicle ? _activeVehicle.trajectoryPoints : 0 : 0

        delegate: MapPolyline {
            line.width: 3
            line.color: "red"
            z:          QGroundControl.zOrderTrajectoryLines
            path: [
                object.coordinate1,
                object.coordinate2,
            ]
        }
    }

    // Add the vehicles to the map
    MapItemView {
        model: QGroundControl.multiVehicleManager.vehicles

        delegate: VehicleMapItem {
            vehicle:        object
            coordinate:     object.coordinate
            isSatellite:    flightMap.isSatelliteMap
            size:           _mainIsMap ? ScreenTools.defaultFontPixelHeight * 3 : ScreenTools.defaultFontPixelHeight
            z:              QGroundControl.zOrderVehicles
        }
    }

    // Add the mission item visuals to the map
    Repeater {
        model: _mainIsMap ? missionController.visualItems : 0

        delegate: MissionItemMapVisual {
            map:        flightMap
            onClicked:  guidedActionsController.confirmAction(guidedActionsController.actionSetWaypoint, Math.max(object.sequenceNumber, 1))
        }
    }

    // Add lines between waypoints
    MissionLineView {
        model:  _mainIsMap ? missionController.waypointLines : 0
    }

    GeoFenceMapVisuals {
        map:                    flightMap
        myGeoFenceController:   geoFenceController
        interactive:            false
        planView:               false
        homePosition:           _activeVehicle && _activeVehicle.homePosition.isValid ? _activeVehicle.homePosition : undefined
    }

    // Rally points on map
    MapItemView {
        model: rallyPointController.points

        delegate: MapQuickItem {
            id:             itemIndicator
            anchorPoint.x:  sourceItem.anchorPointX
            anchorPoint.y:  sourceItem.anchorPointY
            coordinate:     object.coordinate
            z:              QGroundControl.zOrderMapItems

            sourceItem: MissionItemIndexLabel {
                id:         itemIndexLabel
                label:      qsTr("R", "rally point map item label")
            }
        }
    }

    // GoTo here waypoint
    MapQuickItem {
        coordinate:     _gotoHereCoordinate
        visible:        _activeVehicle && _activeVehicle.guidedMode && _gotoHereCoordinate.isValid
        z:              QGroundControl.zOrderMapItems
        anchorPoint.x:  sourceItem.anchorPointX
        anchorPoint.y:  sourceItem.anchorPointY

        sourceItem: MissionItemIndexLabel {
            checked: true
            label:   qsTr("G", "Goto here waypoint") // second string is translator's hint.
        }
    }    

    // Handle guided mode clicks
    MouseArea {
        anchors.fill: parent

        onClicked: {
            if (guidedActionsController.showGotoLocation) {
                _gotoHereCoordinate = flightMap.toCoordinate(Qt.point(mouse.x, mouse.y), false /* clipToViewPort */)
                guidedActionsController.confirmAction(guidedActionsController.actionGoto, _gotoHereCoordinate)
            }
        }
    }

    MapScale {
        id:                     mapScale
        anchors.right:          parent.right
        anchors.margins:        ScreenTools.defaultFontPixelHeight * (0.33)
        anchors.topMargin:      ScreenTools.defaultFontPixelHeight * (0.33) + state === "bottomMode" ? 0 : ScreenTools.toolbarHeight
        anchors.bottomMargin:   ScreenTools.defaultFontPixelHeight * (0.33)
        mapControl:             flightMap
        visible:                !ScreenTools.isTinyScreen
        state:                  "bottomMode"
        states: [
            State {
                name:   "topMode"
                AnchorChanges {
                    target:                 mapScale
                    anchors.top:            parent.top
                    anchors.bottom:         undefined
                }
            },
            State {
                name:   "bottomMode"
                AnchorChanges {
                    target:                 mapScale
                    anchors.top:            undefined
                    anchors.bottom:         parent.bottom
                }
            }
        ]
    }
}