// DragonDisplayPicker.qml
//
// Multi-display picker component for streaming to a specific monitor on a remote host.
// Shows a modal overlay with a list of available displays and lets the user select one.
//
// Usage:
//   DragonDisplayPicker {
//       visible: showDisplayPicker
//       anchors.fill: parent
//       hostIP: pickerHostIP
//       hostName: pickerHostName
//       displays: pickerDisplays
//       onDisplaySelected: function(idx) {
//           showDisplayPicker = false
//           dragonRelay.streamHostDisplay(pickerHostIP, idx)
//       }
//       onCancelled: { showDisplayPicker = false }
//   }

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15

Item {
    id: root

    property string hostIP: ""
    property string hostName: ""
    property var displays: []   // array of display maps

    signal displaySelected(int displayIndex)
    signal cancelled()

    // ── Modal backdrop ─────────────────────────────────────────────────────

    Rectangle {
        anchors.fill: parent
        color: "rgba(0, 0, 0, 0.7)"

        MouseArea {
            anchors.fill: parent
            onClicked: root.cancelled()
        }
    }

    // ── Dialog box ─────────────────────────────────────────────────────────

    Rectangle {
        id: dialogBox
        anchors.centerIn: parent
        width: Math.min(parent.width - 48, 500)
        height: Math.min(parent.height - 48, 400)
        radius: 12
        color: "#0f172a"  // dark blue slate
        border.color: "#374151"
        border.width: 1

        ColumnLayout {
            anchors.fill: parent
            anchors.margins: 20
            spacing: 16

            // ── Title ──────────────────────────────────────────────────────

            Label {
                text: qsTr("Select Display")
                font.pixelSize: 18
                font.bold: true
                color: "white"
            }

            Label {
                text: qsTr("Host: %1 (%2)").arg(root.hostName).arg(root.hostIP)
                font.pixelSize: 12
                color: "#9ca3af"
                Layout.fillWidth: true
                elide: Text.ElideRight
            }

            // ── Divider ────────────────────────────────────────────────────

            Rectangle {
                Layout.fillWidth: true
                height: 1
                color: "#374151"
            }

            // ── Display list ───────────────────────────────────────────────

            ListView {
                id: displayList
                Layout.fillWidth: true
                Layout.fillHeight: true
                spacing: 8
                clip: true

                model: root.displays

                delegate: Rectangle {
                    width: displayList.width
                    height: 56
                    radius: 8
                    color: displayMouse.containsMouse ? "#374151" : "#1f2937"
                    border.color: displayMouse.containsMouse ? "#4b5563" : "transparent"
                    border.width: 1

                    RowLayout {
                        anchors.fill: parent
                        anchors.leftMargin: 16
                        anchors.rightMargin: 16
                        spacing: 12

                        Column {
                            spacing: 2

                            Label {
                                text: modelData.friendlyName || modelData.name
                                font.pixelSize: 14
                                font.bold: true
                                color: "white"
                            }

                            Label {
                                text: qsTr("%1x%2").arg(modelData.width).arg(modelData.height)
                                font.pixelSize: 11
                                color: "#9ca3af"
                            }
                        }

                        Item { Layout.fillWidth: true }

                        Rectangle {
                            visible: modelData.isPrimary
                            width: primaryLabel.implicitWidth + 12
                            height: 20
                            radius: 4
                            color: "#10b981"  // green

                            Label {
                                id: primaryLabel
                                anchors.centerIn: parent
                                text: qsTr("Primary")
                                font.pixelSize: 10
                                color: "white"
                            }
                        }
                    }

                    MouseArea {
                        id: displayMouse
                        anchors.fill: parent
                        hoverEnabled: true
                        onClicked: {
                            root.displaySelected(index)
                        }
                    }
                }

                // Empty state message
                Label {
                    anchors.centerIn: parent
                    text: qsTr("No displays available")
                    color: "#9ca3af"
                    font.pixelSize: 12
                    visible: displayList.count === 0
                }
            }

            // ── Divider ────────────────────────────────────────────────────

            Rectangle {
                Layout.fillWidth: true
                height: 1
                color: "#374151"
            }

            // ── Buttons ────────────────────────────────────────────────────

            RowLayout {
                spacing: 12
                Layout.fillWidth: true

                Item { Layout.fillWidth: true }

                Button {
                    text: qsTr("Cancel")
                    flat: true
                    onClicked: root.cancelled()
                }

                Button {
                    text: qsTr("Select")
                    enabled: displayList.currentIndex >= 0
                    onClicked: {
                        if (displayList.currentIndex >= 0) {
                            root.displaySelected(displayList.currentIndex)
                        }
                    }
                }
            }
        }
    }
}