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

ColumnLayout {
  id: root

  spacing: 0

  ScrollView {
    id: scrollView

    Layout.fillWidth: true
    Layout.fillHeight: true
    padding: Style.marginM * scaling
    clip: true
    ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
    ScrollBar.vertical.policy: ScrollBar.AsNeeded

    ColumnLayout {
      width: scrollView.availableWidth
      spacing: 0

      Item {
        Layout.fillWidth: true
        Layout.preferredHeight: 0
      }

      ColumnLayout {
        spacing: Style.marginL * scaling
        Layout.fillWidth: true

        ColumnLayout {
          spacing: Style.marginXXS * scaling
          Layout.fillWidth: true

          NText {
            text: "Bar Position"
            font.pointSize: Style.fontSizeL * scaling
            font.weight: Style.fontWeightBold
            color: Color.mOnSurface
          }

          NText {
            text: "Choose where to place the bar on the screen"
            font.pointSize: Style.fontSizeXS * scaling
            color: Color.mOnSurfaceVariant
            wrapMode: Text.WordWrap
            Layout.fillWidth: true
          }

          NComboBox {
            Layout.fillWidth: true
            model: ListModel {
              ListElement {
                key: "top"
                name: "Top"
              }
              ListElement {
                key: "bottom"
                name: "Bottom"
              }
            }
            currentKey: Settings.data.bar.position
            onSelected: key => {
                          Settings.data.bar.position = key
                        }
          }
        }

        ColumnLayout {
          spacing: Style.marginXXS * scaling
          Layout.fillWidth: true

          NText {
            text: "Background Opacity"
            font.pointSize: Style.fontSizeL * scaling
            font.weight: Style.fontWeightBold
            color: Color.mOnSurface
          }

          NText {
            text: "Adjust the background opacity of the bar"
            font.pointSize: Style.fontSizeXS * scaling
            color: Color.mOnSurfaceVariant
            wrapMode: Text.WordWrap
            Layout.fillWidth: true
          }

          RowLayout {
            NSlider {
              Layout.fillWidth: true
              from: 0
              to: 1
              stepSize: 0.01
              value: Settings.data.bar.backgroundOpacity
              onMoved: Settings.data.bar.backgroundOpacity = value
              cutoutColor: Color.mSurface
            }

            NText {
              text: Math.floor(Settings.data.bar.backgroundOpacity * 100) + "%"
              Layout.alignment: Qt.AlignVCenter
              Layout.leftMargin: Style.marginS * scaling
              color: Color.mOnSurface
            }
          }
        }

        NToggle {
          label: "Show Active Window's Icon"
          description: "Display the app icon next to the title of the currently focused window."
          checked: Settings.data.bar.showActiveWindowIcon
          onToggled: checked => {
                       Settings.data.bar.showActiveWindowIcon = checked
                     }
        }

        NToggle {
          label: "Show Battery Percentage"
          description: "Show battery percentage at all times."
          checked: Settings.data.bar.alwaysShowBatteryPercentage
          onToggled: checked => {
                       Settings.data.bar.alwaysShowBatteryPercentage = checked
                     }
        }

        NDivider {
          Layout.fillWidth: true
          Layout.topMargin: Style.marginL * scaling
          Layout.bottomMargin: Style.marginL * scaling
        }

        // Widgets Management Section
        ColumnLayout {
          spacing: Style.marginXXS * scaling
          Layout.fillWidth: true

          NText {
            text: "Widgets Positioning"
            font.pointSize: Style.fontSizeXXL * scaling
            font.weight: Style.fontWeightBold
            color: Color.mOnSurface
            Layout.bottomMargin: Style.marginS * scaling
          }

          NText {
            text: "Drag and drop widgets to reorder them within each section, or use the add/remove buttons to manage widgets."
            font.pointSize: Style.fontSizeXS * scaling
            color: Color.mOnSurfaceVariant
            wrapMode: Text.WordWrap
            Layout.fillWidth: true
          }

          // Bar Sections
          ColumnLayout {
            Layout.fillWidth: true
            Layout.fillHeight: true
            Layout.topMargin: Style.marginM * scaling
            spacing: Style.marginM * scaling

            // Left Section
            NWidgetCard {
              sectionName: "Left"
              widgetModel: Settings.data.bar.widgets.left
              availableWidgets: availableWidgets
              scrollView: scrollView
              onAddWidget: (widgetName, section) => addWidgetToSection(widgetName, section)
              onRemoveWidget: (section, index) => removeWidgetFromSection(section, index)
              onReorderWidget: (section, fromIndex, toIndex) => reorderWidgetInSection(section, fromIndex, toIndex)
            }

            // Center Section
            NWidgetCard {
              sectionName: "Center"
              widgetModel: Settings.data.bar.widgets.center
              availableWidgets: availableWidgets
              scrollView: scrollView
              onAddWidget: (widgetName, section) => addWidgetToSection(widgetName, section)
              onRemoveWidget: (section, index) => removeWidgetFromSection(section, index)
              onReorderWidget: (section, fromIndex, toIndex) => reorderWidgetInSection(section, fromIndex, toIndex)
            }

            // Right Section
            NWidgetCard {
              sectionName: "Right"
              widgetModel: Settings.data.bar.widgets.right
              availableWidgets: availableWidgets
              scrollView: scrollView
              onAddWidget: (widgetName, section) => addWidgetToSection(widgetName, section)
              onRemoveWidget: (section, index) => removeWidgetFromSection(section, index)
              onReorderWidget: (section, fromIndex, toIndex) => reorderWidgetInSection(section, fromIndex, toIndex)
            }
          }
        }
      }
    }
  }

  // Helper functions
  function addWidgetToSection(widgetName, section) {
    //Logger.log("BarTab", "Adding widget", widgetName, "to section", section)
    var sectionArray = Settings.data.bar.widgets[section]
    if (sectionArray) {
      // Create a new array to avoid modifying the original
      var newArray = sectionArray.slice()
      newArray.push(widgetName)
      //Logger.log("BarTab", "Widget added. New array:", JSON.stringify(newArray))

      // Assign the new array
      Settings.data.bar.widgets[section] = newArray
    }
  }

  function removeWidgetFromSection(section, index) {
   // Logger.log("BarTab", "Removing widget from section", section, "at index", index)
    var sectionArray = Settings.data.bar.widgets[section]
    //Logger.log("BarTab", "Current section array:", JSON.stringify(sectionArray))

    if (sectionArray && index >= 0 && index < sectionArray.length) {
      // Create a new array to avoid modifying the original
      var newArray = sectionArray.slice()
      newArray.splice(index, 1)
      //Logger.log("BarTab", "Widget removed. New array:", JSON.stringify(newArray))

      // Assign the new array
      Settings.data.bar.widgets[section] = newArray

      // Force a settings save
      //Logger.log("BarTab", "Settings updated, triggering save...")

      // Verify the change was applied
      Qt.setTimeout(function () {
        var updatedArray = Settings.data.bar.widgets[section]
        //Logger.log("BarTab", "Verification - updated section array:", JSON.stringify(updatedArray))
      }, 100)
    } else {
      //Logger.log("BarTab", "Invalid section or index:", section, index, "array length:",
      //            sectionArray ? sectionArray.length : "null")
    }
  }

  function reorderWidgetInSection(section, fromIndex, toIndex) {
    //Logger.log("BarTab", "Reordering widget in section", section, "from", fromIndex, "to", toIndex)
    var sectionArray = Settings.data.bar.widgets[section]
    if (sectionArray && fromIndex >= 0 && fromIndex < sectionArray.length && toIndex >= 0
        && toIndex < sectionArray.length) {

      // Create a new array to avoid modifying the original
      var newArray = sectionArray.slice()
      var item = newArray[fromIndex]
      newArray.splice(fromIndex, 1)
      newArray.splice(toIndex, 0, item)
      Logger.log("BarTab", "Widget reordered. New array:", JSON.stringify(newArray))

      // Assign the new array
      Settings.data.bar.widgets[section] = newArray
    }
  }

  // Widget loader for discovering available widgets
  WidgetLoader {
    id: widgetLoader
  }

  ListModel {
    id: availableWidgets
  }

  Component.onCompleted: {
    discoverWidgets()
  }

  // Automatically discover available widgets using WidgetLoader
  function discoverWidgets() {
    availableWidgets.clear()

    // Use WidgetLoader to discover available widgets
    const discoveredWidgets = widgetLoader.discoverAvailableWidgets()

    // Add discovered widgets to the ListModel
    discoveredWidgets.forEach(widget => {
                                availableWidgets.append(widget)
                              })
  }
}