import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Quickshell
import Quickshell.Wayland
import qs.Modules.SettingsPanel.Tabs as Tabs
import qs.Commons
import qs.Services
import qs.Widgets

NPanel {
  id: root

  panelWidth: {
    var w = Math.round(Math.max(screen?.width * 0.4, 1000) * scaling)
    w = Math.min(w, screen?.width - Style.marginL * 2)
    return w
  }
  panelHeight: {
    var h = Math.round(Math.max(screen?.height * 0.75, 800) * scaling)
    h = Math.min(h, screen?.height - Style.barHeight * scaling - Style.marginL * 2)
    return h
  }
  panelAnchorHorizontalCenter: true
  panelAnchorVerticalCenter: true

  // Enable keyboard focus for settings panel
  panelKeyboardFocus: true

  // Tabs enumeration, order is NOT relevant
  enum Tab {
    About,
    AudioService,
    Bar,
    Launcher,
    Brightness,
    ColorScheme,
    Display,
    General,
    Network,
    ScreenRecorder,
    TimeWeather,
    Wallpaper,
    WallpaperSelector
  }

  property int requestedTab: SettingsPanel.Tab.General
  property int currentTabIndex: 0
  property var tabsModel: []

  Connections {
    target: Settings.data.wallpaper
    function onEnabledChanged() {
      updateTabsModel()
    }
  }

  Component.onCompleted: {
    updateTabsModel()
  }

  Component {
    id: generalTab
    Tabs.GeneralTab {}
  }
  Component {
    id: launcherTab
    Tabs.LauncherTab {}
  }
  Component {
    id: barTab
    Tabs.BarTab {}
  }

  Component {
    id: audioTab
    Tabs.AudioTab {}
  }
  Component {
    id: brightnessTab
    Tabs.BrightnessTab {}
  }
  Component {
    id: displayTab
    Tabs.DisplayTab {}
  }
  Component {
    id: networkTab
    Tabs.NetworkTab {}
  }
  Component {
    id: timeWeatherTab
    Tabs.TimeWeatherTab {}
  }
  Component {
    id: colorSchemeTab
    Tabs.ColorSchemeTab {}
  }
  Component {
    id: wallpaperTab
    Tabs.WallpaperTab {}
  }
  Component {
    id: wallpaperSelectorTab
    Tabs.WallpaperSelectorTab {}
  }
  Component {
    id: screenRecorderTab
    Tabs.ScreenRecorderTab {}
  }
  Component {
    id: aboutTab
    Tabs.AboutTab {}
  }

  // Order *DOES* matter
  function updateTabsModel() {
    let newTabs = [{
                     "id": SettingsPanel.Tab.General,
                     "label": "General",
                     "icon": "tune",
                     "source": generalTab
                   }, {
                     "id": SettingsPanel.Tab.Bar,
                     "label": "Bar",
                     "icon": "web_asset",
                     "source": barTab
                   }, {
                     "id": SettingsPanel.Tab.Launcher,
                     "label": "Launcher",
                     "icon": "apps",
                     "source": launcherTab
                   }, {
                     "id": SettingsPanel.Tab.AudioService,
                     "label": "Audio",
                     "icon": "volume_up",
                     "source": audioTab
                   }, {
                     "id": SettingsPanel.Tab.Display,
                     "label": "Display",
                     "icon": "monitor",
                     "source": displayTab
                   }, {
                     "id": SettingsPanel.Tab.Network,
                     "label": "Network",
                     "icon": "lan",
                     "source": networkTab
                   }, {
                     "id": SettingsPanel.Tab.Brightness,
                     "label": "Brightness",
                     "icon": "brightness_6",
                     "source": brightnessTab
                   }, {
                     "id": SettingsPanel.Tab.TimeWeather,
                     "label": "Time & Weather",
                     "icon": "schedule",
                     "source": timeWeatherTab
                   }, {
                     "id": SettingsPanel.Tab.ColorScheme,
                     "label": "Color Scheme",
                     "icon": "palette",
                     "source": colorSchemeTab
                   }, {
                     "id": SettingsPanel.Tab.Wallpaper,
                     "label": "Wallpaper",
                     "icon": "image",
                     "source": wallpaperTab
                   }]

    // Only add the Wallpaper Selector tab if the feature is enabled
    if (Settings.data.wallpaper.enabled) {
      newTabs.push({
                     "id": SettingsPanel.Tab.WallpaperSelector,
                     "label": "Wallpaper Selector",
                     "icon": "wallpaper_slideshow",
                     "source": wallpaperSelectorTab
                   })
    }

    newTabs.push({
                   "id": SettingsPanel.Tab.ScreenRecorder,
                   "label": "Screen Recorder",
                   "icon": "videocam",
                   "source": screenRecorderTab
                 }, {
                   "id": SettingsPanel.Tab.About,
                   "label": "About",
                   "icon": "info",
                   "source": aboutTab
                 })

    root.tabsModel = newTabs // Assign the generated list to the model
  }
  // When the panel opens, choose the appropriate tab
  onOpened: {
    updateTabsModel()

    var initialIndex = SettingsPanel.Tab.General
    if (root.requestedTab !== null) {
      for (var i = 0; i < root.tabsModel.length; i++) {
        if (root.tabsModel[i].id === root.requestedTab) {
          initialIndex = i
          break
        }
      }
    }
    // Now that the UI is settled, set the current tab index.
    root.currentTabIndex = initialIndex
  }

  panelContent: Rectangle {
    anchors.fill: parent
    anchors.margins: Style.marginL * scaling
    color: Color.transparent

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

      Rectangle {
        id: sidebar
        Layout.preferredWidth: 220 * scaling
        Layout.fillHeight: true
        color: Color.mSurfaceVariant
        border.color: Color.mOutline
        border.width: Math.max(1, Style.borderS * scaling)
        radius: Style.radiusM * scaling

        Column {
          anchors.fill: parent
          anchors.margins: Style.marginS * scaling
          spacing: Style.marginXS * 1.5 * scaling

          Repeater {
            id: sections
            model: root.tabsModel
            delegate: Rectangle {
              id: tabItem
              width: parent.width
              height: 32 * scaling
              radius: Style.radiusS * scaling
              color: selected ? Color.mPrimary : (tabItem.hovering ? Color.mTertiary : Color.transparent)
              readonly property bool selected: index === currentTabIndex
              property bool hovering: false
              property color tabTextColor: selected ? Color.mOnPrimary : (tabItem.hovering ? Color.mOnTertiary : Color.mOnSurface)

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

              Behavior on tabTextColor {
                ColorAnimation {
                  duration: Style.animationFast
                }
              }

              RowLayout {
                anchors.fill: parent
                anchors.leftMargin: Style.marginS * scaling
                anchors.rightMargin: Style.marginS * scaling
                spacing: Style.marginS * scaling
                // Tab icon on the left side
                NIcon {
                  text: modelData.icon
                  color: tabTextColor
                  font.pointSize: Style.fontSizeL * scaling
                }
                // Tab label on the left side
                NText {
                  text: modelData.label
                  color: tabTextColor
                  font.pointSize: Style.fontSizeM * scaling
                  font.weight: Style.fontWeightBold
                  Layout.fillWidth: true
                }
              }
              MouseArea {
                anchors.fill: parent
                hoverEnabled: true
                acceptedButtons: Qt.LeftButton
                onEntered: tabItem.hovering = true
                onExited: tabItem.hovering = false
                onCanceled: tabItem.hovering = false
                onClicked: currentTabIndex = index
              }
            }
          }
        }
      }

      // Content
      Rectangle {
        id: contentPane
        Layout.fillWidth: true
        Layout.fillHeight: true
        radius: Style.radiusM * scaling
        color: Color.mSurfaceVariant
        border.color: Color.mOutline
        border.width: Math.max(1, Style.borderS * scaling)
        clip: true

        ColumnLayout {
          id: contentLayout
          anchors.fill: parent
          anchors.margins: Style.marginL * scaling
          spacing: Style.marginS * scaling

          RowLayout {
            id: headerRow
            Layout.fillWidth: true
            spacing: Style.marginS * scaling

            // Tab label on the main right side
            NText {
              text: root.tabsModel[currentTabIndex].label
              font.pointSize: Style.fontSizeXL * scaling
              font.weight: Style.fontWeightBold
              color: Color.mPrimary
              Layout.fillWidth: true
            }
            NIconButton {
              icon: "close"
              tooltipText: "Close"
              Layout.alignment: Qt.AlignVCenter
              onClicked: root.close()
            }
          }

          NDivider {
            Layout.fillWidth: true
          }

          Item {
            Layout.fillWidth: true
            Layout.fillHeight: true

            Repeater {
              model: root.tabsModel
              delegate: Loader {
                anchors.fill: parent
                active: index === root.currentTabIndex
                sourceComponent: ColumnLayout {
                  ScrollView {
                    id: scrollView
                    Layout.fillWidth: true
                    Layout.fillHeight: true
                    ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
                    ScrollBar.vertical.policy: ScrollBar.AsNeeded
                    padding: Style.marginL * scaling
                    clip: true

                    Loader {
                      active: true
                      sourceComponent: root.tabsModel[index].source
                      width: scrollView.availableWidth
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}