// WallpaperPopup.qml - A popup for browsing and setting wallpapers from /usr/share/wallpapers
import QtQuick
import Quickshell
import Quickshell.Io
import Quickshell.Wayland
import ".."

PanelWindow {
    id: root
    required property var screen

    property bool logicalOpen:  GlobalStates.popups.active === "wallpaper"
    property bool _keepVisible: false
    visible: logicalOpen || _keepVisible

    onLogicalOpenChanged: {
        if (logicalOpen) {
            closeTimer.stop()
            _keepVisible = false
            if (wallpaperModel.count === 0) scanProc.running = true
            openY.start()
            openOpacity.start()
            focusTimer.start()
        } else {
            _keepVisible = true
            closeY.start()
            closeOpacity.start()
            closeTimer.restart()
        }
    }

    Timer { id: closeTimer; interval: 280; onTriggered: root._keepVisible = false }
    Timer { id: focusTimer; interval: 50;  onTriggered: grid.forceActiveFocus() }

    WlrLayershell.layer:         WlrLayer.Overlay
    WlrLayershell.namespace:     "quickshell-popup-wallpaper"
    WlrLayershell.keyboardFocus: WlrKeyboardFocus.OnDemand
    anchors { top: true; left: true; right: true; bottom: true }
    color: Qt.rgba(0, 0, 0, 0)

    MouseArea { anchors.fill: parent; onClicked: GlobalStates.popups.close() }

    NumberAnimation { id: openY;        target: box; property: "y";       to: 1;                  duration: 250; easing.type: Easing.OutCubic }
    NumberAnimation { id: closeY;       target: box; property: "y";       to: -340;               duration: 200; easing.type: Easing.InCubic  }
    NumberAnimation { id: openOpacity;  target: box; property: "opacity"; to: Theme.popupOpacity; duration: 200 }
    NumberAnimation { id: closeOpacity; target: box; property: "opacity"; to: 0.0;                duration: 200 }

    // ── Named-pipe IPC ────────────────────────────────────────
    // Trigger from Hyprland keybind:  echo 1 > /tmp/qs-wallpaper-ipc
    // Trigger from another QML popup: Exec.run(["bash", "-c", "echo 1 > /tmp/qs-wallpaper-ipc"])
    Process {
        id: ipcReader
        running: true
        command: ["bash", "-c",
            "rm -f /tmp/qs-wallpaper-ipc && " +
            "mkfifo /tmp/qs-wallpaper-ipc && " +
            "while true; do cat /tmp/qs-wallpaper-ipc; done"]
        stdout: SplitParser {
            onRead: () => GlobalStates.popups.toggle("wallpaper", 0)
        }
        onExited: running = true
    }

    // ── Wallpaper scanner ─────────────────────────────────────
    ListModel { id: wallpaperModel }

    Process {
        id: scanProc
        running: false
        command: ["bash", "-c",
            "find /usr/share/wallpapers -type f " +
            "\\( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \\) " +
            "| sort"]
        stdout: SplitParser {
            onRead: (line) => {
                var p = line.trim()
                if (p) wallpaperModel.append({ path: p })
            }
        }
    }

    Process { id: setProc; running: false }

    // ── Popup box ─────────────────────────────────────────────
    Rectangle {
        id: box

        // anchorX = 0 → centered; anchorX > 0 → centered under widget
        x: {
            var ax = GlobalStates.popups.anchorX
            var cx = ax > 0 ? ax - width / 2 : parent.width / 2 - width / 2
            return Math.max(4, Math.min(parent.width - width - 4, cx))
        }
        y:       -340
        opacity: 0.0

        width:  324
        height: 500

        color:        Theme.popupBackground
        radius:       Theme.radius * 2
        clip:         true
        border.color: Theme.popupBorderColor
        border.width: Theme.popupBorderWidth

        MouseArea { anchors.fill: parent }

        Text {
            anchors.centerIn: parent
            visible: wallpaperModel.count === 0
            text:    "Scanning..."
            font { family: Theme.fontSans; pixelSize: Theme.fontSize }
            color:   Theme.pillText
            opacity: 0.5
        }

        GridView {
            id: grid
            anchors { fill: parent; margins: 8 }
            clip:               true
            cellWidth:          Math.floor(width / 2)
            cellHeight:         104
            focus:              true
            keyNavigationEnabled: true
            currentIndex:       0

            Keys.onReturnPressed: {
                var item = wallpaperModel.get(grid.currentIndex)
                if (item) {
                    setProc.command = ["waypaper", "--wallpaper", item.path]
                    setProc.running = true
                    GlobalStates.popups.close()
                }
            }
            Keys.onEscapePressed: GlobalStates.popups.close()

            model: wallpaperModel

            highlight: Rectangle {
                z:      2
                radius: Theme.radius + 1
                color:  "transparent"
                border.color: Theme.accent ?? "#cba6f7"
                border.width: 2
            }
            highlightFollowsCurrentItem: true
            highlightMoveDuration:       80

            delegate: Item {
                required property string path
                required property int    index

                width:  grid.cellWidth - 4
                height: 100

                Rectangle {
                    anchors { fill: parent; margins: 2 }
                    radius: Theme.radius
                    color:  "black"
                    clip:   true

                    Image {
                        anchors.fill:  parent
                        source:        "file://" + path
                        fillMode:      Image.PreserveAspectCrop
                        sourceSize:    Qt.size(152, 96)
                        smooth:        true
                        asynchronous:  true
                        opacity:       status === Image.Ready ? 1.0 : 0.0
                        Behavior on opacity { NumberAnimation { duration: 150 } }
                    }

                    Rectangle {
                        anchors.fill: parent
                        radius:       Theme.radius
                        color:        hover.containsMouse ? Qt.rgba(1, 1, 1, 0.2) : "transparent"
                        Behavior on color { ColorAnimation { duration: 100 } }
                    }

                    MouseArea {
                        id: hover
                        anchors.fill: parent
                        hoverEnabled: true
                        cursorShape:  Qt.PointingHandCursor
                        onClicked: {
                            grid.currentIndex = index
                            setProc.command = ["waypaper", "--wallpaper", path]
                            setProc.running = true
                            GlobalStates.popups.close()
                        }
                        onEntered: grid.currentIndex = index
                    }
                }
            }
        }
    }
}