import QtQuick
import Quickshell
import Quickshell.Io
import Quickshell.Wayland
import Quickshell.Services.Mpris
import "." as M

M.BarSection {
    id: root
    spacing: M.Theme.moduleSpacing
    opacity: M.Modules.mpris.enable && player !== null ? 1 : 0
    visible: opacity > 0
    tooltip: ""

    readonly property MprisPlayer player: Mpris.players.values[0] ?? null
    readonly property bool playing: player?.playbackState === MprisPlaybackState.Playing
    property string _cachedArt: ""
    property string _artTrack: ""

    // Cache art URL at root level so it's captured even when panel is hidden
    readonly property string _artUrl: player?.trackArtUrl ?? ""
    readonly property string _currentTrack: player?.trackTitle ?? ""
    on_ArtUrlChanged: if (_artUrl)
        _cachedArt = _artUrl
    on_CurrentTrackChanged: if (_currentTrack !== _artTrack) {
        _artTrack = _currentTrack;
        _cachedArt = _artUrl || "";
    }

    // Preload art while panel is hidden — ensures QML image cache has the pixels
    Image {
        visible: false
        source: root._cachedArt
        asynchronous: true
    }

    // Cava visualizer — 16 bars, raw output mode
    property var _cavaBars: Array(16).fill(0)
    Process {
        id: cavaProc
        running: root.playing
        command: ["sh", "-c", "cfg=$(mktemp /tmp/nova-cava-XXXXXX.conf);" + "cat > \"$cfg\" << 'CAVAEOF'\n" + "[general]\nbars=16\nframerate=30\n[output]\nmethod=raw\nraw_target=/dev/stdout\ndata_format=ascii\nascii_max_range=100\n" + "CAVAEOF\n" + "trap 'rm -f \"$cfg\"' EXIT;" + "exec cava -p \"$cfg\""]
        stdout: SplitParser {
            splitMarker: "\n"
            onRead: line => {
                const vals = line.split(";").filter(s => s).map(Number);
                if (vals.length >= 16)
                    root._cavaBars = vals.map(v => v / 100);
            }
        }
    }

    required property var bar

    property bool _panelHovered: false
    property bool _pinned: false
    readonly property bool _anyHover: root._hovered || _panelHovered
    readonly property bool _showPanel: _anyHover || _pinned

    on_AnyHoverChanged: {
        if (_anyHover)
            _unpinTimer.stop();
        else if (_pinned)
            _unpinTimer.start();
    }

    Timer {
        id: _unpinTimer
        interval: 500
        onTriggered: root._pinned = false
    }

    M.BarIcon {
        icon: root.playing ? "\uF04B" : (root.player?.playbackState === MprisPlaybackState.Paused ? "\uDB80\uDFE4" : "\uDB81\uDCDB")
        anchors.verticalCenter: parent.verticalCenter
        MouseArea {
            anchors.fill: parent
            cursorShape: Qt.PointingHandCursor
            onClicked: root._pinned = !root._pinned
        }
    }
    M.BarLabel {
        label: root.player?.trackTitle || root.player?.identity || ""
        elide: Text.ElideRight
        width: Math.min(implicitWidth, 200)
        anchors.verticalCenter: parent.verticalCenter
        MouseArea {
            anchors.fill: parent
            cursorShape: Qt.PointingHandCursor
            onClicked: root._pinned = !root._pinned
        }
    }

    PanelWindow {
        id: panel

        screen: QsWindow.window?.screen ?? null
        visible: _winVisible
        color: "transparent"

        property bool _winVisible: false

        WlrLayershell.layer: WlrLayer.Overlay
        WlrLayershell.exclusiveZone: 0
        WlrLayershell.namespace: "nova-mpris"

        anchors.top: true
        anchors.left: true

        margins.top: 0
        margins.left: Math.max(0, Math.min(Math.round(root.mapToGlobal(root.width / 2, 0).x - (QsWindow.window?.screen?.x ?? 0) - implicitWidth / 2), (panel.screen?.width ?? 1920) - implicitWidth))

        implicitWidth: panelContent.width
        implicitHeight: panelContent.height

        Connections {
            target: root
            function on_ShowPanelChanged() {
                if (root._showPanel) {
                    panel._winVisible = true;
                    hideAnim.stop();
                    showAnim.start();
                } else {
                    showAnim.stop();
                    hideAnim.start();
                }
            }
        }

        ParallelAnimation {
            id: showAnim
            NumberAnimation {
                target: panelContent
                property: "opacity"
                to: 1
                duration: 120
                easing.type: Easing.OutCubic
            }
            NumberAnimation {
                target: panelContent
                property: "y"
                to: 0
                duration: 150
                easing.type: Easing.OutCubic
            }
        }

        ParallelAnimation {
            id: hideAnim
            NumberAnimation {
                target: panelContent
                property: "opacity"
                to: 0
                duration: 150
                easing.type: Easing.InCubic
            }
            NumberAnimation {
                target: panelContent
                property: "y"
                to: -panelContent.height
                duration: 150
                easing.type: Easing.InCubic
            }
            onFinished: panel._winVisible = false
        }

        MouseArea {
            anchors.fill: parent
            hoverEnabled: true
            onContainsMouseChanged: root._panelHovered = containsMouse
        }

        Rectangle {
            x: panelContent.x
            y: panelContent.y
            width: panelContent.width
            height: panelContent.height
            color: M.Theme.base01
            opacity: panelContent.opacity * Math.max(M.Theme.barOpacity, 0.85)
            topLeftRadius: 0
            topRightRadius: 0
            bottomLeftRadius: M.Theme.radius
            bottomRightRadius: M.Theme.radius
        }

        Column {
            id: panelContent
            width: 280
            opacity: 0
            y: -height
            topPadding: 4
            bottomPadding: 4
            spacing: 2

            // Album art
            Item {
                width: parent.width
                height: _artImg._hasArt ? 140 : 60
                clip: true

                Rectangle {
                    anchors.fill: parent
                    color: M.Theme.base02
                }

                Image {
                    id: _artImg
                    anchors.fill: parent
                    fillMode: Image.PreserveAspectCrop
                    visible: _hasArt
                    asynchronous: true
                    source: root._cachedArt

                    property bool _hasArt: false
                    onStatusChanged: if (status === Image.Ready)
                        _hasArt = true
                    Connections {
                        target: root
                        function on_CachedArtChanged() {
                            if (!root._cachedArt)
                                _artImg._hasArt = false;
                        }
                    }
                }

                // Visualizer bars
                Row {
                    anchors.left: parent.left
                    anchors.right: parent.right
                    anchors.bottom: parent.bottom
                    height: parent.height * 0.6
                    spacing: 2
                    visible: root.playing
                    opacity: 0.5

                    Repeater {
                        model: 16
                        Rectangle {
                            required property int index
                            width: (parent.width - 15 * parent.spacing) / 16
                            height: parent.height * (root._cavaBars[index] ?? 0)
                            anchors.bottom: parent.bottom
                            color: M.Theme.base0E
                            radius: 1

                            Behavior on height {
                                NumberAnimation {
                                    duration: 50
                                }
                            }
                        }
                    }
                }

                Rectangle {
                    anchors.left: parent.left
                    anchors.right: parent.right
                    anchors.bottom: parent.bottom
                    height: 40
                    visible: _artImg.visible
                    gradient: Gradient {
                        GradientStop {
                            position: 0
                            color: "transparent"
                        }
                        GradientStop {
                            position: 1
                            color: M.Theme.base01
                        }
                    }
                }

                Text {
                    anchors.centerIn: parent
                    text: "\uF001"
                    color: M.Theme.base04
                    font.pixelSize: 28
                    font.family: M.Theme.iconFontFamily
                    visible: _artImg.status !== Image.Ready
                }
            }

            // Track info
            Item {
                width: parent.width
                height: titleCol.implicitHeight + 8

                Column {
                    id: titleCol
                    anchors.left: parent.left
                    anchors.right: parent.right
                    anchors.verticalCenter: parent.verticalCenter
                    anchors.leftMargin: 12
                    anchors.rightMargin: 12
                    spacing: 2

                    Text {
                        width: parent.width
                        text: root.player?.trackTitle || "No track"
                        color: M.Theme.base05
                        font.pixelSize: M.Theme.fontSize + 1
                        font.family: M.Theme.fontFamily
                        font.bold: true
                        elide: Text.ElideRight
                    }

                    Text {
                        width: parent.width
                        text: {
                            const p = root.player;
                            if (!p)
                                return "";
                            const artist = Array.isArray(p.trackArtists) ? p.trackArtists.join(", ") : (p.trackArtists || "");
                            return [artist, p.trackAlbum].filter(s => s).join(" \u2014 ");
                        }
                        color: M.Theme.base04
                        font.pixelSize: M.Theme.fontSize - 1
                        font.family: M.Theme.fontFamily
                        elide: Text.ElideRight
                        visible: text !== ""
                    }
                }
            }

            // Progress
            Item {
                width: parent.width
                height: 20

                readonly property real pos: root.player?.position ?? 0
                readonly property real dur: root.player?.length ?? 0
                readonly property real frac: dur > 0 ? pos / dur : 0

                function _fmtTime(ms) {
                    const s = Math.floor(ms / 1000);
                    const m = Math.floor(s / 60);
                    return m + ":" + String(s % 60).padStart(2, "0");
                }

                Text {
                    anchors.left: parent.left
                    anchors.leftMargin: 12
                    anchors.verticalCenter: parent.verticalCenter
                    text: parent._fmtTime(parent.pos)
                    color: M.Theme.base04
                    font.pixelSize: M.Theme.fontSize - 2
                    font.family: M.Theme.fontFamily
                }
                Text {
                    anchors.right: parent.right
                    anchors.rightMargin: 12
                    anchors.verticalCenter: parent.verticalCenter
                    text: parent._fmtTime(parent.dur)
                    color: M.Theme.base04
                    font.pixelSize: M.Theme.fontSize - 2
                    font.family: M.Theme.fontFamily
                }

                Item {
                    anchors.horizontalCenter: parent.horizontalCenter
                    anchors.verticalCenter: parent.verticalCenter
                    width: parent.width - 80
                    height: 4

                    Rectangle {
                        anchors.fill: parent
                        color: M.Theme.base02
                        radius: 2
                    }
                    Rectangle {
                        width: parent.width * Math.min(1, Math.max(0, parent.parent.frac))
                        height: parent.height
                        color: M.Theme.base0E
                        radius: 2
                    }
                }
            }

            // Transport controls
            Item {
                width: parent.width
                height: 36

                Row {
                    anchors.centerIn: parent
                    spacing: 24

                    Text {
                        text: "\uF048"
                        color: root.player?.canGoPrevious ? M.Theme.base05 : M.Theme.base03
                        font.pixelSize: M.Theme.fontSize + 4
                        font.family: M.Theme.iconFontFamily
                        anchors.verticalCenter: parent.verticalCenter
                        MouseArea {
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                            enabled: root.player?.canGoPrevious ?? false
                            onClicked: root.player.previous()
                        }
                    }

                    Text {
                        text: root.playing ? "\uF04C" : "\uF04B"
                        color: M.Theme.base0E
                        font.pixelSize: M.Theme.fontSize + 8
                        font.family: M.Theme.iconFontFamily
                        anchors.verticalCenter: parent.verticalCenter
                        MouseArea {
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                            onClicked: root.player?.togglePlaying()
                        }
                    }

                    Text {
                        text: "\uF051"
                        color: root.player?.canGoNext ? M.Theme.base05 : M.Theme.base03
                        font.pixelSize: M.Theme.fontSize + 4
                        font.family: M.Theme.iconFontFamily
                        anchors.verticalCenter: parent.verticalCenter
                        MouseArea {
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                            enabled: root.player?.canGoNext ?? false
                            onClicked: root.player.next()
                        }
                    }
                }
            }

            // Player name
            Text {
                width: parent.width
                height: 20
                horizontalAlignment: Text.AlignHCenter
                text: root.player?.identity ?? ""
                color: M.Theme.base03
                font.pixelSize: M.Theme.fontSize - 2
                font.family: M.Theme.fontFamily
            }
        }
    }
}