import QtQuick
import QtQuick.Layouts
import QtQuick.Controls
import QtQuick.Dialogs
import ISC

// ===== Status Tab — Bento Grid Dashboard =====
// ROW 1: Connection Status (65%) | Cycles Completed (35%)
// ROW 2: Wafer & Sensor + Directory (65%) | Total Runtime (35%)
// ROW 3: Activity Log (100%, fills remaining)
ColumnLayout {
    id: root
    anchors.fill: parent
    anchors.margins: Theme.panelPadding
    spacing: 8

    // ── Reusable Inline Components ──
    component StatCard : Rectangle {
        property alias value: valueText.text
        property alias label: labelText.text
        property bool active: root.waferDetected
        property int valSize: active ? Theme.font3xl : Theme.font2xl

        Layout.fillWidth: true
        Layout.fillHeight: true
        color: Theme.cardBackground
        border.color: Theme.cardBorder
        border.width: 1
        radius: Theme.radiusSm

        ColumnLayout {
            anchors.centerIn: parent
            spacing: 4
            Text {
                id: valueText
                color: active ? Theme.headingColor : Theme.sideMutedText
                font.pixelSize: valSize
                font.weight: Font.Bold
                font.family: Theme.uiFontFamily
                Layout.alignment: Qt.AlignHCenter
            }
            Text {
                id: labelText
                color: Theme.sideMutedText
                font.pixelSize: Theme.fontXs
                font.weight: Font.Medium
                font.letterSpacing: 1.2
                font.family: Theme.uiFontFamily
                Layout.alignment: Qt.AlignHCenter
            }
        }
    }

    component GridCell : RowLayout {
        property alias label: labelText.text
        property alias value: valueText.text
        property bool active: root.waferDetected

        spacing: 8
        Layout.fillWidth: true

        Text {
            id: labelText
            color: Theme.sideMutedText
            font.pixelSize: Theme.fontXs
            font.family: Theme.uiFontFamily
            Layout.fillWidth: true
            elide: Text.ElideRight
            verticalAlignment: Text.AlignVCenter
        }
        Text {
            id: valueText
            color: active ? Theme.headingColor : Theme.sideMutedText
            font.pixelSize: Theme.fontSm
            font.weight: Font.Bold
            font.family: Theme.uiFontFamily
            Layout.alignment: Qt.AlignRight
            verticalAlignment: Text.AlignVCenter
        }
    }

    // ── Aliases for external wiring ──
    property alias waferFamilyCode: waferInfoFamilyCell.value
    property alias waferSerialNumber: waferSerialCell.value
    property alias waferSensorCount: waferSensorsCell.value
    property alias waferRuntime: runtimeCard.value
    property alias waferCycles: waferCyclesCell.value
    property bool waferDetected: {
        var info = deviceController.lastWaferInfo;
        return info && info.length > 0 && info[0] !== "";
    }

    property int dataRows: 0
    property int dataCols: 0
    property string csvPath: ""
    property bool dataParsed: false

    readonly property bool isConnected: deviceController.connectionStatus === "Connected"
    readonly property bool isBusy: deviceController.connectionStatus.endsWith("...")
    readonly property string portName: deviceController.selectedPort || "—"

    function cleanFolderUrl(url) {
        return decodeURIComponent(String(url).replace(/^file:\/\//, ""));
    }
    function currentFamilyCode() {
        var info = deviceController.lastWaferInfo;
        return info && info.length > 0 ? (info[0] || "") : "";
    }
    function parseAndSavePendingRead() {
        deviceController.parseAndSaveData(root.currentFamilyCode(), deviceController.selectedPort || "");
    }

    FolderDialog {
        id: saveDirDialog
        title: "Choose a folder to save."
        onAccepted: {
            deviceController.setSaveDataDir(root.cleanFolderUrl(selectedFolder));
            root.parseAndSavePendingRead();
        }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  ROW 1: Connection Status (100%)
    // ═══════════════════════════════════════════════════════════════════════
    RowLayout {
        Layout.fillWidth: true
        Layout.preferredHeight: 90
        Layout.maximumHeight: 90
        spacing: 8

        Rectangle {
            Layout.fillWidth: true
            Layout.fillHeight: true
            color: Theme.cardBackground
            border.color: root.isConnected ? Theme.statusSuccessColor : (root.isBusy ? Theme.statusWarningColor : Theme.statusErrorColor)
            border.width: 1
            radius: Theme.radiusSm

            ColumnLayout {
                id: connStatusCol
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.verticalCenter: parent.verticalCenter
                anchors.leftMargin: Theme.panelPadding
                anchors.rightMargin: Theme.panelPadding
                spacing: 8

                Text {
                    text: "CONNECTION STATUS"
                    color: Theme.sideMutedText
                    font.pixelSize: Theme.fontXs
                    font.weight: Font.Medium
                    font.letterSpacing: 1.2
                    font.family: Theme.uiFontFamily
                }

                RowLayout {
                    Layout.fillWidth: true
                    spacing: 0

                    ColumnLayout {
                        spacing: 1
                        Text {
                            text: "HOST PC"
                            color: Theme.sideMutedText
                            font.pixelSize: Theme.fontXs
                            font.family: Theme.uiFontFamily
                        }
                        Text {
                            text: "localhost"
                            color: Theme.headingColor
                            font.pixelSize: Theme.fontMd
                            font.weight: Font.Bold
                            font.family: Theme.uiFontFamily
                        }
                    }

                    Item {
                        Layout.fillWidth: true
                        implicitHeight: 22

                        Row {
                            anchors.centerIn: parent
                            spacing: 5

                            Repeater {
                                model: 4
                                Rectangle {
                                    width: 4; height: 4; radius: 2
                                    anchors.verticalCenter: parent.verticalCenter
                                    color: root.isConnected ? Theme.statusSuccessColor : (root.isBusy ? Theme.statusWarningColor : Theme.sideMutedText)
                                    opacity: (root.isConnected || root.isBusy) ? 1.0 : 0.3

                                    SequentialAnimation on opacity {
                                        running: root.isConnected || root.isBusy
                                        loops: Animation.Infinite
                                        NumberAnimation { to: 0.3; duration: 1400 }
                                        NumberAnimation { to: 1.0; duration: 1400 }
                                    }
                                }
                            }

                            Rectangle {
                                anchors.verticalCenter: parent.verticalCenter
                                width: statusPillText.implicitWidth + 16
                                height: 20
                                radius: 10
                                color: root.isConnected ? Theme.statusSuccessColor : (root.isBusy ? Theme.statusWarningColor : Theme.statusErrorColor)

                                Text {
                                    id: statusPillText
                                    anchors.centerIn: parent
                                    text: root.isConnected ? "ACTIVE" : (root.isBusy ? deviceController.connectionStatus.replace("...", "").toUpperCase() : "INACTIVE")
                                    color: "#111111"
                                    font.pixelSize: Theme.fontXs
                                    font.weight: Font.Bold
                                    font.family: Theme.uiFontFamily
                                    font.letterSpacing: 0.6
                                }
                            }

                            Repeater {
                                model: 4
                                Rectangle {
                                    width: 4; height: 4; radius: 2
                                    anchors.verticalCenter: parent.verticalCenter
                                    color: root.isConnected ? Theme.statusSuccessColor : (root.isBusy ? Theme.statusWarningColor : Theme.sideMutedText)
                                    opacity: (root.isConnected || root.isBusy) ? 1.0 : 0.3

                                    SequentialAnimation on opacity {
                                        running: root.isConnected || root.isBusy
                                        loops: Animation.Infinite
                                        NumberAnimation { to: 0.3; duration: 1400 }
                                        NumberAnimation { to: 1.0; duration: 1400 }
                                    }
                                }
                            }
                        }
                    }

                    ColumnLayout {
                        spacing: 1
                        Text {
                            text: "COM PORT"
                            color: Theme.sideMutedText
                            font.pixelSize: Theme.fontXs
                            font.family: Theme.uiFontFamily
                            Layout.alignment: Qt.AlignRight
                        }
                        Text {
                            text: root.portName
                            color: root.isConnected ? Theme.statusSuccessColor : Theme.headingColor
                            font.pixelSize: Theme.fontMd
                            font.weight: Font.Bold
                            font.family: Theme.uiFontFamily
                            Layout.alignment: Qt.AlignRight
                        }
                    }
                }
            }
        }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  ROW 2: Wafer & Sensor + Directory (65%) | Total Runtime (35%)
    // ═══════════════════════════════════════════════════════════════════════
    RowLayout {
        Layout.fillWidth: true
        Layout.preferredHeight: 90
        Layout.maximumHeight: 90
        spacing: 8

        RowLayout {
            Layout.preferredWidth: 65
            Layout.fillWidth: true
            Layout.fillHeight: true
            spacing: 8

            Rectangle {
                Layout.fillWidth: true
                Layout.fillHeight: true
                color: Theme.cardBackground
                border.color: Theme.cardBorder
                border.width: 1
                radius: Theme.radiusSm

                ColumnLayout {
                    anchors.fill: parent
                    anchors.margins: Theme.panelPadding
                    spacing: 6

                    ColumnLayout {
                        Layout.fillWidth: true
                        spacing: 2

                        Text {
                            text: "DIRECTORY"
                            color: Theme.sideMutedText
                            font.pixelSize: Theme.fontMd
                            font.weight: Font.Medium
                            font.letterSpacing: 1.2
                            font.family: Theme.uiFontFamily
                        }
                        Text {
                            text: deviceController.saveDataDir || "Not configured"
                            color: Theme.bodyColor
                            font.pixelSize: Theme.fontSm
                            font.family: Theme.uiFontFamily
                            font.italic: true
                            opacity: 0.7
                            elide: Text.ElideMiddle
                            Layout.fillWidth: true
                        }
                    }

                    RowLayout {
                        Layout.fillWidth: true
                        spacing: 8

                        Rectangle {
                            visible: root.csvPath !== ""
                            width: sessionSavedLabel.implicitWidth + 12
                            height: 18
                            radius: 4
                            color: Theme.fieldBackground
                            border.color: Theme.sideBorder
                            border.width: 1

                            Text {
                                id: sessionSavedLabel
                                anchors.centerIn: parent
                                text: "SESSION SAVED"
                                color: Theme.sideMutedText
                                font.pixelSize: Theme.fontXs
                                font.weight: Font.Bold
                                font.family: Theme.uiFontFamily
                                font.letterSpacing: 0.6
                            }
                        }

                        Item { Layout.fillWidth: true }

                        Button {
                            id: browseBtn
                            text: "Save As"
                            font.pixelSize: Theme.fontSm
                            font.weight: Font.Medium
                            font.family: Theme.uiFontFamily
                            implicitHeight: 24
                            implicitWidth: 70
                            hoverEnabled: true
                            background: Rectangle {
                                color: browseBtn.hovered ? Theme.buttonNeutralHover : Theme.buttonNeutralBackground
                                border.color: Theme.cardBorder
                                border.width: 1
                                radius: Theme.radiusSm
                            }
                            contentItem: Text {
                                text: browseBtn.text
                                color: Theme.bodyColor
                                font: browseBtn.font
                                horizontalAlignment: Text.AlignHCenter
                                verticalAlignment: Text.AlignVCenter
                            }
                            onClicked: saveDirDialog.open()
                        }
                    }
                }
            }

            Rectangle {
                Layout.fillWidth: true
                Layout.fillHeight: true
                color: Theme.cardBackground
                border.color: Theme.cardBorder
                border.width: 1
                radius: Theme.radiusSm

                ColumnLayout {
                    anchors.fill: parent
                    anchors.margins: 10
                    spacing: 4

                    Text {
                        text: "WAFER & SENSOR DATA"
                        color: Theme.sideMutedText
                        font.pixelSize: Theme.fontXs
                        font.weight: Font.Bold
                        font.family: Theme.uiFontFamily
                        font.letterSpacing: 0.6
                        Layout.bottomMargin: 2
                    }

                    GridLayout {
                        Layout.fillWidth: true
                        Layout.fillHeight: true
                        columns: 2
                        rowSpacing: 4
                        columnSpacing: 16

                        GridCell {
                            id: waferInfoFamilyCell
                            label: "Family Code"
                            value: {
                                var info = deviceController.lastWaferInfo;
                                return (info && info.length > 0 && info[0]) ? info[0] : "—";
                            }
                        }
                        GridCell {
                            id: waferCyclesCell
                            label: "Cycles Completed"
                            value: {
                                var info = deviceController.lastWaferInfo;
                                return (info && info.length > 5 && info[5] !== undefined) ? String(info[5]) : "—";
                            }
                            active: root.waferDetected
                        }

                        Rectangle {
                            Layout.columnSpan: 2
                            Layout.fillWidth: true
                            height: 1
                            color: Theme.cardBorder
                            opacity: 0.5
                        }

                        GridCell {
                            id: waferSerialCell
                            label: "Serial"
                            value: {
                                var info = deviceController.lastWaferInfo;
                                return (info && info.length > 1 && info[1]) ? info[1] : "—";
                            }
                        }
                        GridCell {
                            id: waferSensorsCell
                            label: "Sensors"
                            value: {
                                var info = deviceController.lastWaferInfo;
                                return (info && info.length > 2 && info[2]) ? String(info[2]) : "—";
                            }
                        }
                    }
                }
            }
        }

        StatCard {
            id: runtimeCard
            Layout.preferredWidth: 35
            value: {
                var info = deviceController.lastWaferInfo;
                return (info && info.length > 4 && info[4] !== undefined) ? info[4] + "s" : "—";
            }
            label: "TOTAL RUNTIME"
        }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  ROW 3: Activity Log — ALWAYS visible (fills remaining height)
    // ═══════════════════════════════════════════════════════════════════════
    Rectangle {
        Layout.fillWidth: true
        Layout.fillHeight: true
        color: Theme.cardBackground
        border.color: Theme.cardBorder
        border.width: 1
        radius: Theme.radiusMd
        clip: true

        ColumnLayout {
            anchors.fill: parent
            spacing: 0

            Rectangle {
                Layout.fillWidth: true
                Layout.preferredHeight: 36
                color: Theme.subtleSectionBackground

                RowLayout {
                    anchors.fill: parent
                    anchors.leftMargin: Theme.panelPadding
                    anchors.rightMargin: Theme.panelPadding
                    spacing: 8

                    Text {
                        text: "📄"
                        font.pixelSize: Theme.fontSm
                        visible: root.csvPath !== ""
                        Layout.alignment: Qt.AlignVCenter
                    }

                    Label {
                        text: root.csvPath !== "" ? root.csvPath.split("/").pop() : "ACTIVITY LOG"
                        color: Theme.bodyColor
                        font.pixelSize: root.csvPath !== "" ? Theme.fontMd : Theme.fontSm
                        font.letterSpacing: root.csvPath !== "" ? 0 : 1.8
                        font.weight: Font.Medium
                        font.family: Theme.uiFontFamily
                        elide: Text.ElideMiddle
                        Layout.fillWidth: true
                        Layout.alignment: Qt.AlignVCenter
                    }

                    Button {
                        id: refreshSessionBtn
                        text: "Refresh"
                        font.pixelSize: Theme.fontSm
                        font.family: Theme.uiFontFamily
                        implicitHeight: 24
                        hoverEnabled: true
                        background: Rectangle {
                            color: refreshSessionBtn.hovered ? Theme.buttonNeutralHover : "transparent"
                            radius: Theme.radiusSm
                        }
                        contentItem: Text {
                            text: refreshSessionBtn.text
                            color: Theme.bodyColor
                            font: refreshSessionBtn.font
                            horizontalAlignment: Text.AlignHCenter
                            verticalAlignment: Text.AlignVCenter
                        }
                        onClicked: deviceController.clearSession()
                    }

                    Button {
                        id: clearLogBtn
                        text: "Clear"
                        font.pixelSize: Theme.fontSm
                        font.family: Theme.uiFontFamily
                        implicitHeight: 24
                        hoverEnabled: true
                        background: Rectangle {
                            color: clearLogBtn.hovered ? Theme.buttonNeutralHover : "transparent"
                            radius: Theme.radiusSm
                        }
                        contentItem: Text {
                            text: clearLogBtn.text
                            color: Theme.bodyColor
                            font: clearLogBtn.font
                            horizontalAlignment: Text.AlignHCenter
                            verticalAlignment: Text.AlignVCenter
                        }
                        onClicked: deviceController.clearActivityLog()
                    }
                }

                Rectangle {
                    anchors.bottom: parent.bottom
                    anchors.left: parent.left
                    anchors.right: parent.right
                    height: 1
                    color: Theme.cardBorder
                }
            }

            ScrollView {
                Layout.fillWidth: true
                Layout.fillHeight: true
                Layout.margins: Theme.panelPadding
                clip: true

                TextArea {
                    id: activityLog
                    width: parent.width
                    text: qsTr("Welcome — use the side rail to detect a wafer, or import data to review.")
                    readOnly: true
                    font.family: "monospace"
                    font.pixelSize: Theme.fontSm
                    wrapMode: TextArea.WordWrap
                    color: Theme.bodyColor
                    background: null
                }
            }
        }

        Connections {
            target: deviceController
            function onActivityLogUpdated(newLog) {
                activityLog.text = newLog ? newLog : qsTr("Welcome — use the side rail to detect a wafer, or import data to review.");
            }
        }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  SIGNAL HANDLERS
    // ═══════════════════════════════════════════════════════════════════════
    Connections {
        target: deviceController
        function onLogMessage(message) {
            if (message == "CHOOSE_SAVE_DIR") {
                saveDirDialog.open();
            }
        }
        function onPortsUpdated() {}
        function onDetectResult(result) {
            if (!result) {
                root.dataParsed = false;
                root.dataRows = 0;
                root.dataCols = 0;
                root.csvPath = "";
            }
        }
        function onStatusRestored() {
            if (deviceController.dataRowCount > 0) {
                root.dataParsed = true;
                root.dataRows = deviceController.dataRowCount;
                root.dataCols = deviceController.dataColCount;
                root.csvPath = "";
            }
        }
    }

    Connections {
        target: deviceController
        function onReadResult(result) {
            root.dataParsed = false;
            root.dataRows = 0;
            root.dataCols = 0;
            root.csvPath = "";
            if (result && result.success === true)
                saveDirDialog.open();
        }
    }

    Connections {
        target: deviceController
        function onParsedDataReady(result) {
            if (result && result.success) {
                root.dataParsed = true;
                root.dataRows = result.rows;
                root.dataCols = result.cols;
                root.csvPath = result.csv_path || "";
            } else {
                root.dataParsed = false;
            }
        }
    }
}