import QtQuick
import QtQuick.Layouts
import QtQuick.Controls
import Quickshell
import Quickshell.Wayland
import qs.Commons
import qs.Services
import qs.Widgets

NPanel {
  id: root

  preferredWidth: 520
  preferredHeight: 600
  preferredWidthRatio: 0.4
  preferredHeightRatio: 0.6
  panelAnchorHorizontalCenter: true
  panelAnchorVerticalCenter: true
  panelKeyboardFocus: true

  // Prevent closing during setup
  backgroundClickEnabled: false
  draggable: false

  property int currentStep: 0
  property int totalSteps: 4

  // Setup wizard data
  property string selectedWallpaperDirectory: Settings.defaultWallpapersDirectory
  property string selectedWallpaper: ""
  property real selectedScaleRatio: 1.0
  property string selectedBarPosition: "top"
  property bool selectedDimDesktop: true

  panelContent: Component {
    Item {
      id: container
      anchors.fill: parent

      ColumnLayout {
        id: wizardContent
        anchors.fill: parent
        anchors.margins: Style.marginXL
        spacing: Style.marginL

        // Override ESC key to prevent closing during setup
        Shortcut {
          sequences: ["Escape"]
          enabled: root.active
          onActivated: {

            // Do nothing - prevent ESC from closing the setup wizard
          }
          context: Qt.WindowShortcut
        }

        // Step content - takes most of the space
        Item {
          Layout.fillWidth: true
          Layout.fillHeight: true
          Layout.minimumHeight: 300

          StackLayout {
            id: stepStack
            anchors.fill: parent
            currentIndex: currentStep

            // Step 0: Welcome - Beautiful centered design
            Item {
              ColumnLayout {
                anchors.centerIn: parent
                width: Math.min(parent.width - Style.marginXL * 2, 420)
                spacing: Style.marginXL

                // Logo with subtle glow effect
                Item {
                  Layout.fillWidth: true
                  Layout.preferredHeight: 120
                  Layout.alignment: Qt.AlignHCenter

                  Rectangle {
                    anchors.centerIn: parent
                    width: 120
                    height: 120
                    radius: width / 2
                    color: Color.mPrimary
                    opacity: 0.08
                    scale: 1.3
                  }

                  Image {
                    anchors.centerIn: parent
                    width: 110
                    height: 110
                    source: Qt.resolvedUrl(Quickshell.shellDir + "/Assets/noctalia.svg")
                    fillMode: Image.PreserveAspectFit
                    smooth: true

                    Rectangle {
                      anchors.fill: parent
                      color: Color.mSurfaceVariant
                      radius: width / 2
                      border.color: Color.mOutline
                      border.width: 2
                      visible: parent.status === Image.Error

                      NIcon {
                        icon: "sparkles"
                        pointSize: Style.fontSizeXXL * 1.5
                        color: Color.mPrimary
                        anchors.centerIn: parent
                      }
                    }

                    // Subtle pulse animation
                    SequentialAnimation on scale {
                      running: true
                      loops: Animation.Infinite
                      NumberAnimation {
                        from: 1.0
                        to: 1.05
                        duration: 2000
                        easing.type: Easing.InOutQuad
                      }
                      NumberAnimation {
                        from: 1.05
                        to: 1.0
                        duration: 2000
                        easing.type: Easing.InOutQuad
                      }
                    }
                  }
                }

                // Welcome text with gradient feel
                ColumnLayout {
                  Layout.fillWidth: true
                  Layout.alignment: Qt.AlignHCenter
                  spacing: Style.marginM

                  NText {
                    text: "Welcome to Noctalia! ✨"
                    pointSize: Style.fontSizeXXL * 1.4
                    font.weight: Style.fontWeightBold
                    color: Color.mOnSurface
                    Layout.fillWidth: true
                    horizontalAlignment: Text.AlignHCenter
                  }

                  NText {
                    text: "Let's make your desktop uniquely yours"
                    pointSize: Style.fontSizeL
                    color: Color.mOnSurfaceVariant
                    Layout.fillWidth: true
                    horizontalAlignment: Text.AlignHCenter
                    wrapMode: Text.WordWrap
                  }

                  // Friendly subtext
                  Rectangle {
                    Layout.fillWidth: true
                    Layout.topMargin: Style.marginL
                    Layout.preferredHeight: childrenRect.height + Style.marginM * 2
                    color: Color.mSurfaceVariant
                    radius: Style.radiusL
                    opacity: 0.4

                    NText {
                      anchors.centerIn: parent
                      width: parent.width - Style.marginL * 2
                      text: I18n.tr("setup.welcome.note")
                      pointSize: Style.fontSizeM
                      color: Color.mOnSurfaceVariant
                      horizontalAlignment: Text.AlignHCenter
                      wrapMode: Text.WordWrap
                    }
                  }
                }
              }
            }

            // Step 1: Wallpaper Setup
            SetupWallpaperStep {
              id: step1
              selectedDirectory: root.selectedWallpaperDirectory
              selectedWallpaper: root.selectedWallpaper
              onDirectoryChanged: function (directory) {
                root.selectedWallpaperDirectory = directory
                root.applyWallpaperSettings()
              }
              onWallpaperChanged: function (wallpaper) {
                root.selectedWallpaper = wallpaper
                root.applyWallpaperSettings()
              }
            }

            // Step 2: UI Configuration
            SetupCustomizeStep {
              id: step2
              selectedScaleRatio: root.selectedScaleRatio
              selectedBarPosition: root.selectedBarPosition
              selectedDimDesktop: root.selectedDimDesktop
              onScaleRatioChanged: function (ratio) {
                root.selectedScaleRatio = ratio
                root.applyUISettings()
              }
              onBarPositionChanged: function (position) {
                root.selectedBarPosition = position
                root.applyUISettings()
              }
              onDimDesktopChanged: function (dim) {
                root.selectedDimDesktop = dim
                root.applyUISettings()
              }
            }

            // Step 3: Appearance - Dark mode and color source
            SetupAppearanceStep {
              id: step3
            }
          }
        }

        // Elegant divider
        Rectangle {
          Layout.fillWidth: true
          Layout.preferredHeight: 1
          color: Color.mOutline
          opacity: 0.2
        }

        // Modern progress indicator with labels
        Item {
          Layout.fillWidth: true
          Layout.preferredHeight: 32

          RowLayout {
            anchors.centerIn: parent
            spacing: Style.marginM

            Repeater {
              model: [{
                  "icon": "sparkles",
                  "label": "Welcome"
                }, {
                  "icon": "image",
                  "label": "Wallpaper"
                }, {
                  "icon": "settings",
                  "label": "Customize"
                }, {
                  "icon": "palette",
                  "label": "Appearance"
                }]
              delegate: RowLayout {
                spacing: Style.marginS

                Rectangle {
                  width: 24
                  height: 24
                  radius: width / 2
                  color: index <= currentStep ? Color.mPrimary : Color.mSurfaceVariant
                  border.color: index === currentStep ? Color.mPrimary : "transparent"
                  border.width: index === currentStep ? 2 : 0

                  NIcon {
                    icon: modelData.icon
                    pointSize: Style.fontSizeS
                    color: index <= currentStep ? Color.mOnPrimary : Color.mOnSurfaceVariant
                    anchors.centerIn: parent
                  }

                  Behavior on color {
                    ColorAnimation {
                      duration: Style.animationNormal
                    }
                  }
                }

                NText {
                  text: modelData.label
                  pointSize: Style.fontSizeS
                  color: index <= currentStep ? Color.mPrimary : Color.mOnSurfaceVariant
                  font.weight: index === currentStep ? Style.fontWeightBold : Style.fontWeightRegular

                  Behavior on color {
                    ColorAnimation {
                      duration: Style.animationNormal
                    }
                  }
                }

                // Connector line
                Rectangle {
                  width: 40
                  height: 2
                  radius: 1
                  color: index < currentStep ? Color.mPrimary : Color.mSurfaceVariant
                  visible: index < totalSteps - 1

                  Behavior on color {
                    ColorAnimation {
                      duration: Style.animationNormal
                    }
                  }
                }
              }
            }
          }
        }

        // Smooth navigation buttons
        Item {
          Layout.fillWidth: true
          Layout.preferredHeight: 44
          Layout.topMargin: Style.marginS

          RowLayout {
            anchors.fill: parent
            spacing: Style.marginM

            NButton {
              text: "Skip Setup"
              outlined: true
              visible: currentStep === 0
              Layout.preferredHeight: 44
              onClicked: {
                root.completeSetup()
              }
            }

            Item {
              Layout.fillWidth: true
            }

            NButton {
              text: "← Back"
              outlined: true
              visible: currentStep > 0
              Layout.preferredHeight: 44
              onClicked: {
                if (currentStep > 0) {
                  currentStep--
                }
              }
            }

            NButton {
              text: currentStep === totalSteps - 1 ? "All Done!" : "Continue →"
              Layout.preferredHeight: 44
              onClicked: {
                if (currentStep < totalSteps - 1) {
                  currentStep++
                } else {
                  root.completeSetup()
                }
              }
            }
          }
        }
      }
    }
  }

  function completeSetup() {
    Logger.log("SetupWizard", "Completing setup with selected options")

    if (selectedWallpaperDirectory !== Settings.data.wallpaper.directory) {
      Settings.data.wallpaper.directory = selectedWallpaperDirectory
      WallpaperService.refreshWallpapersList()
    }

    if (selectedWallpaper !== "") {
      WallpaperService.changeWallpaper(selectedWallpaper, undefined)
    }

    Settings.data.general.scaleRatio = selectedScaleRatio
    Settings.data.bar.position = selectedBarPosition
    Settings.data.general.dimDesktop = selectedDimDesktop
    Settings.data.general.setupCompleted = true

    Settings.saveImmediate()
    Logger.log("SetupWizard", "Setup completed successfully")
    root.close()
  }

  function applyWallpaperSettings() {
    if (selectedWallpaperDirectory !== Settings.data.wallpaper.directory) {
      Settings.data.wallpaper.directory = selectedWallpaperDirectory
      WallpaperService.refreshWallpapersList()
    }

    if (selectedWallpaper !== "") {
      WallpaperService.changeWallpaper(selectedWallpaper, undefined)
    }
  }

  function applyUISettings() {
    Settings.data.general.scaleRatio = selectedScaleRatio
    Settings.data.bar.position = selectedBarPosition
    Settings.data.general.dimDesktop = selectedDimDesktop
  }

  Component.onCompleted: {
    Logger.log("SetupWizard", "Setup wizard opened")
    // Initialize selections from existing settings to avoid overwriting user config
    if (Settings && Settings.data) {
      selectedScaleRatio = Settings.data.general.scaleRatio
      selectedBarPosition = Settings.data.bar.position
      selectedDimDesktop = Settings.data.general.dimDesktop
      selectedWallpaperDirectory = Settings.data.wallpaper.directory || Settings.defaultWallpapersDirectory
    }
  }
}