import QtQuick
import QtQuick.Effects
import QtQuick.Shapes
import Quickshell.Services.Mpris
import qs.Common
import qs.Services

Item {
    id: root

    property MprisPlayer activePlayer
    property string artUrl: (activePlayer?.trackArtUrl) || ""
    property string lastValidArtUrl: ""
    property alias albumArtStatus: albumArt.status
    property real albumSize: Math.min(width, height) * 0.88
    property bool showAnimation: true
    property real animationScale: 1.0

    onArtUrlChanged: {
        if (artUrl && albumArt.status !== Image.Error) {
            lastValidArtUrl = artUrl
        }
    }

    Loader {
        active: activePlayer?.playbackState === MprisPlaybackState.Playing && showAnimation
        sourceComponent: Component {
            Ref {
                service: CavaService
            }
        }
    }

    Shape {
        id: morphingBlob
        width: parent.width * 1.1
        height: parent.height * 1.1
        anchors.centerIn: parent
        visible: activePlayer?.playbackState === MprisPlaybackState.Playing && showAnimation
        asynchronous: false
        antialiasing: true
        preferredRendererType: Shape.CurveRenderer
        z: 0
        
        layer.enabled: true
        layer.smooth: true
        layer.samples: 4
        
        readonly property real centerX: width / 2
        readonly property real centerY: height / 2
        readonly property real baseRadius: Math.min(width, height) * 0.41 * root.animationScale
        readonly property int segments: 28
        
        property var audioLevels: {
            if (!CavaService.cavaAvailable || CavaService.values.length === 0) {
                return [0.5, 0.3, 0.7, 0.4, 0.6, 0.5, 0.8, 0.2, 0.9, 0.6]
            }
            return CavaService.values
        }
        
        property var smoothedLevels: [0.5, 0.3, 0.7, 0.4, 0.6, 0.5, 0.8, 0.2, 0.9, 0.6]
        property var cubics: []

        onAudioLevelsChanged: updatePath()
        
        FrameAnimation {
            running: morphingBlob.visible
            onTriggered: morphingBlob.updatePath()
        }
        
        Component {
            id: cubicSegment
            PathCubic {}
        }
        
        Component.onCompleted: {
            shapePath.pathElements.push(Qt.createQmlObject(
                'import QtQuick; import QtQuick.Shapes; PathMove {}', shapePath
            ))
            
            for (let i = 0; i < segments; i++) {
                const seg = cubicSegment.createObject(shapePath)
                shapePath.pathElements.push(seg)
                cubics.push(seg)
            }
            
            updatePath()
        }
        
        function expSmooth(prev, next, alpha) {
            return prev + alpha * (next - prev)
        }
        
        function updatePath() {
            if (cubics.length === 0) return
            
            for (let i = 0; i < Math.min(smoothedLevels.length, audioLevels.length); i++) {
                smoothedLevels[i] = expSmooth(smoothedLevels[i], audioLevels[i], 0.35)
            }
            
            const points = []
            for (let i = 0; i < segments; i++) {
                const angle = (i / segments) * 2 * Math.PI
                const audioIndex = i % Math.min(smoothedLevels.length, 10)
                
                const rawLevel = smoothedLevels[audioIndex] || 0
                const scaledLevel = Math.sqrt(Math.min(Math.max(rawLevel, 0), 100) / 100) * 100
                const normalizedLevel = scaledLevel / 100
                const audioLevel = Math.max(0.15, normalizedLevel) * 0.5
                
                const radius = baseRadius * (1.0 + audioLevel)
                const x = centerX + Math.cos(angle) * radius
                const y = centerY + Math.sin(angle) * radius
                points.push({x: x, y: y})
            }
            
            const startMove = shapePath.pathElements[0]
            startMove.x = points[0].x
            startMove.y = points[0].y
            
            const tension = 0.5
            for (let i = 0; i < segments; i++) {
                const p0 = points[(i - 1 + segments) % segments]
                const p1 = points[i]
                const p2 = points[(i + 1) % segments]
                const p3 = points[(i + 2) % segments]
                
                const c1x = p1.x + (p2.x - p0.x) * tension / 3
                const c1y = p1.y + (p2.y - p0.y) * tension / 3
                const c2x = p2.x - (p3.x - p1.x) * tension / 3
                const c2y = p2.y - (p3.y - p1.y) * tension / 3
                
                const seg = cubics[i]
                seg.control1X = c1x
                seg.control1Y = c1y
                seg.control2X = c2x
                seg.control2Y = c2y
                seg.x = p2.x
                seg.y = p2.y
            }
        }
        
        ShapePath {
            id: shapePath
            fillColor: Theme.primary
            strokeColor: "transparent"
            strokeWidth: 0
            joinStyle: ShapePath.RoundJoin
            fillRule: ShapePath.WindingFill
        }
    }

    Rectangle {
        width: albumSize
        height: width
        radius: width / 2
        color: Qt.rgba(Theme.surfaceVariant.r, Theme.surfaceVariant.g, Theme.surfaceVariant.b, 0.3)
        border.color: Theme.surfaceContainer
        border.width: 1
        anchors.centerIn: parent
        z: 1

        Image {
            id: albumArt
            source: artUrl || lastValidArtUrl || ""
            anchors.fill: parent
            anchors.margins: 2
            fillMode: Image.PreserveAspectCrop
            smooth: true
            mipmap: true
            cache: true
            asynchronous: true
            visible: false
            onStatusChanged: {
                if (status === Image.Error) {
                    console.warn("Failed to load album art:", source)
                    source = ""
                    if (activePlayer?.trackArtUrl === source) {
                        root.lastValidArtUrl = ""
                    }
                }
            }
        }

        MultiEffect {
            anchors.fill: parent
            anchors.margins: 2
            source: albumArt
            maskEnabled: true
            maskSource: circularMask
            visible: albumArt.status === Image.Ready
            maskThresholdMin: 0.5
            maskSpreadAtMin: 1
        }

        Item {
            id: circularMask
            width: parent.width - 4
            height: parent.height - 4
            layer.enabled: true
            layer.smooth: true
            visible: false

            Rectangle {
                anchors.fill: parent
                radius: width / 2
                color: "black"
                antialiasing: true
            }
        }

        DankIcon {
            anchors.centerIn: parent
            name: "album"
            size: parent.width * 0.3
            color: Theme.surfaceVariantText
            visible: albumArt.status !== Image.Ready
        }
    }
}