import QtQuick 2.0

import Qt.labs.settings 1.0
import QtQuick.Layouts 1.11
import QtQuick.Controls 1.4
import QGroundControl.Controls 1.0
import QGroundControl.FactControls 1.0
import QGroundControl.ScreenTools 1.0

import MeasurementComplexItem 1.0 as MCI

GridLayout {
    id: _root

    property bool checked: true
    property var missionItem: undefined
    property int availableWidth: 300
    property bool error: errorString.lenght >= 0
    readonly property bool running: _nemoInterface.running
    property string errorString: ""

    signal abort

    property var _areaData: missionItem.areaData
    property real _margin: ScreenTools.defaultFontPixelWidth / 2
    property var _nemoInterface: MCI.NemoInterface
    property bool _holding

    columnSpacing: _margin
    rowSpacing: _margin
    columns: 2

    Component.onCompleted: {
        console.assert(missionItem !== undefined,
                       "please set the missionItem property")
        _holding = false
        _stopHolding()
    }

    QGCLabel {
        text: _root.errorString
        wrapMode: Text.WordWrap
        horizontalAlignment: Text.AlignLeft
        color: "orange"
        Layout.columnSpan: parent.columns
        Layout.fillWidth: true
        visible: !_root.areasCorrect
    }

    QGCButton {
        text: running ? qsTr("Stop") : qsTr("Start")
        Layout.columnSpan: parent.columns
        Layout.fillWidth: true
        onPressed: {
            if (running) {
                _nemoInterface.stop()
            } else {
                _nemoInterface.start()
            }
        }
    }

    QGCLabel {
        text: qsTr("Status: ") + _nemoInterface.statusString
        wrapMode: Text.WordWrap
        horizontalAlignment: Text.AlignVCenter
        Layout.columnSpan: parent.columns
        Layout.fillWidth: true
    }

    SectionHeader {
        id: progressHeader
        Layout.fillWidth: true
        Layout.columnSpan: parent.columns
        text: qsTr("Progress")
    }

    GridLayout {
        columnSpacing: _margin
        rowSpacing: _margin
        columns: 2
        Layout.columnSpan: parent.columns
        Layout.fillWidth: true
        visible: progressHeader.checked

        QGCButton {
            text: !_holding ? qsTr("Hold") : qsTr("Stop Holding")
            Layout.fillWidth: true
            Layout.columnSpan: parent.columns
            onPressed: {
                if (_holding) {
                    _stopHolding()
                    _holding = false
                } else {
                    _holdProgress()
                    _holding = true
                }
            }
        }

        QGCButton {
            text: qsTr("Random")
            Layout.columnSpan: parent.columns
            Layout.fillWidth: true
            onPressed: {
                _randomProgress()
            }
        }

        QGCButton {
            text: qsTr("Reset")
            Layout.columnSpan: parent.columns
            Layout.fillWidth: true
            onPressed: {
                _resetProgress()
            }
        }
    }

    // bussy indicator
    ColumnLayout {
        Layout.fillWidth: true
        spacing: _margin
        Layout.maximumWidth: parent.width

        BusyIndicator {
            id: indicator

            property bool calculating: missionItem.calculating

            running: calculating
            visible: calculating || timer.running

            onCalculatingChanged: {
                if (!calculating) {
                    // defer hiding
                    timer.restart()
                }
            }

            Timer {
                id: timer
                interval: 1000
                repeat: false
                running: false
            }
        }
    } // indicator column

    SectionHeader {
        id: hintHeader
        Layout.fillWidth: true
        Layout.columnSpan: parent.columns
        text: qsTr("Hints")
    }

    GridLayout {
        columnSpacing: _margin
        rowSpacing: _margin
        columns: 2
        Layout.columnSpan: 2
        Layout.fillWidth: true
        visible: hintHeader.checked

        QGCLabel {
            id: hintLabel
            wrapMode: Text.WordWrap
            horizontalAlignment: Text.AlignLeft
            text: qsTr("Use this tab to connect to a device implementing the Nemo Interface.
Use the Random button to simulate measurement progress.")
            Layout.fillWidth: true
            Layout.columnSpan: parent.columns
        }
    }

    Settings {
        property alias showHint: hintHeader.checked
    }

    function _holdProgress() {
        var areaArray = _areaData.measurementAreaList
        for (var i = 0; i < areaArray.count; ++i) {
            var area = areaArray.get(i)
            if (area) {
                area.holdProgress = true
            } else {
                console.log("empty area!")
            }
        }
    }

    function _stopHolding() {
        var areaArray = _areaData.measurementAreaList
        for (var i = 0; i < areaArray.count; ++i) {
            var area = areaArray.get(i)
            if (area) {
                area.holdProgress = false
            } else {
                console.log("empty area!")
            }
        }
    }

    function _randomProgress() {
        var areaArray = _areaData.measurementAreaList
        for (var i = 0; i < areaArray.count; ++i) {
            var area = areaArray.get(i)
            if (area) {
                area.randomProgress()
            } else {
                console.log("empty area!")
            }
        }
    }

    function _resetProgress() {
        var areaArray = _areaData.measurementAreaList
        for (var i = 0; i < areaArray.count; ++i) {
            var area = areaArray.get(i)
            if (area) {
                area.resetProgress()
            } else {
                console.log("empty area!")
            }
        }
    }
}