/*
 * MIT License
 *
 * Copyright (c) 2019 Alexey Edelev <semlanik@gmail.com>
 *
 * This file is part of NeuralNetwork project https://git.semlanik.org/semlanik/NeuralNetwork
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software
 * without restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies
 * or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

import QtQuick 2.11
import QtQuick.Window 2.11
import QtQuick.Controls 1.4
import QtQuick.Dialogs 1.2

ApplicationWindow {
    id: root
    visible: true
    width: 1120
    height: 560
    maximumWidth: 1120
    maximumHeight: 560
    minimumWidth: 1120
    minimumHeight: 560

    property int tileSize: 20
    property int tileCount: 28
    property color resetColor: "#333333"

    MouseArea {
        id: drawingArea
        width: tileCount*tileSize
        height: tileCount*tileSize
        Repeater {
            model: 784
            Rectangle {
                id: tile
                width: tileSize
                height: tileSize
                color: resetColor
                x: tileSize*(model.index%tileCount)
                y: tileSize*Math.floor(model.index/tileCount)
                Connections {
                    target: drawingArea
                    onPositionChanged: {
                        var centerX = tile.x + tile.width/2
                        var centerY = tile.y + tile.height/2
                        var diffX = mouse.x - centerX
                        var diffY = mouse.y - centerY
                        var dense = Math.sqrt(diffX * diffX + diffY * diffY)
                        if (dense < tileSize*1.2) {
                            var newColor = color.r + (tileSize*1.2 - dense)/tileSize*1.2
                            var newValue = newColor - 0.2
                            if (newColor > 1.0) {
                                newColor = 1.0
                                newValue = 1.0
                            }

                            tile.color = Qt.rgba(newColor, newColor, newColor, 1.0)
                            hwengine.updateValue(model.index, newValue)
                        }
                    }
                }

                Connections {
                    target: clearButton
                    onClicked: {
                        tile.color = resetColor
                        hwengine.updateValue(model.index, 0.0)
                    }
                }
            }
        }
    }

    Column {
        id: controls
        anchors.left: drawingArea.right
        anchors.top: parent.top
        anchors.margins: 10
        spacing: 10

        Text {
            text: "Select neural network data"
        }

        Row {
            TextField {
                id: pathToNeuralNetwork
                enabled: false
                width: 300
            }
            Button {
                id: browseButton
                text: "Browse"
                onClicked: {
                    neuralNetworkImport.open()
                }
            }

            Button {
                id: uploadButton
                text: "Upload"
                onClicked: {
                    hwengine.setNeuralNetworkData(pathToNeuralNetwork.text)
                }
            }
        }
        Button {
            id: tainButton
            text: "Re-run trainig"
            onClicked: {
                hwengine.retrain()
            }
        }
        Button {
            id: clearButton
            text: "Clear"
        }
        Button {
            id: recognizeButton
            text: "Recognize"
            onClicked: {
                hwengine.recognize()
            }
        }
    }

    Text {
        id: result
        anchors.top: controls.bottom
        anchors.topMargin: 100
        anchors.horizontalCenter: controls.horizontalCenter
        color: "#003b6f" //Tardis blue :)
        font.pixelSize: 40
        text: hwengine.result
    }

    FileDialog {
        id: neuralNetworkImport
        selectMultiple: false
        selectFolder: false
        nameFilters: ["*.nnd"]
        onAccepted: {
            pathToNeuralNetwork.text = neuralNetworkImport.fileUrl
        }
    }
}