import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Quickshell.Io
import qs.Commons
import qs.Ui
import "Model.js" as Model

// Bar widget and popout panel for streamdeck-go.
//
// Every colour and metric resolves through qs.Commons (Color/Style), so the
// widget repaints itself to match whatever Omarchy theme is active rather than
// carrying a palette of its own.
Panel {
  id: root
  moduleName: "dev.woodard.streamdeck"
  ipcTarget: "dev.woodard.streamdeck"
  manageIpc: false

  // ── theme-derived palette ──────────────────────────────────────────────────
  readonly property color foreground: bar ? bar.foreground : Color.foreground
  readonly property color accent: Color.accent
  readonly property color urgent: bar ? bar.urgent : Color.urgent
  readonly property color dim: Qt.darker(foreground, 1.55)
  readonly property string fontFamily: bar ? bar.fontFamily : Style.font.family

  // The bar icon dims when the deck is unreachable, the same convention the
  // built-in network and bluetooth widgets use.
  readonly property bool live: deck.connected && deck.daemonActive
  readonly property color barIconColor: live ? barForeground : Qt.darker(barForeground, 1.55)

  readonly property var slots: Model.keySlots(deck.status)
  readonly property int cols: Number(deck.status.device.cols) || 8
  readonly property int rows: Number(deck.status.device.rows) || 4

  // ── panel navigation state ─────────────────────────────────────────────────
  property int cursorIndex: 0
  property bool cursorActive: false
  property int editingIndex: -1
  readonly property bool editing: editingIndex >= 0

  // A device-shape change (XL -> MK.2, or the first real poll shrinking the
  // fallback grid) can strand the cursor or the editor beyond the last slot.
  onSlotsChanged: {
    if (cursorIndex >= slots.length) cursorIndex = Math.max(0, slots.length - 1)
    if (editing && editingIndex >= slots.length) closeEditor()
  }

  function moveCursor(dx, dy) {
    cursorActive = true
    if (editing) return
    var next = cursorIndex + dx + dy * cols
    if (next < 0 || next >= slots.length) return
    cursorIndex = next
  }

  function activateCursor() {
    if (editing) return
    editKey(cursorIndex)
  }

  function focusKey(index) {
    cursorActive = true
    cursorIndex = index
  }

  function editKey(index) {
    cursorIndex = index
    editingIndex = index
    // Focus lands inside the editor via its own onVisibleChanged handler —
    // the key catcher is blocked while editing.
  }

  function closeEditor() {
    editingIndex = -1
    Qt.callLater(function() { keyCatcher.forceActiveFocus() })
  }

  readonly property var focusedKey: {
    for (var i = 0; i < slots.length; i++) {
      if (Number(slots[i].index) === cursorIndex) return slots[i]
    }
    return null
  }

  implicitWidth: button.implicitWidth
  implicitHeight: button.implicitHeight
  visible: !(deck.setting("hideWhenDisconnected", false) === true && deck.loaded && !deck.connected)

  onOpenedChanged: if (opened) {
    cursorActive = false
    editingIndex = -1
    if (panelFlick) panelFlick.contentY = 0
    deck.refresh()
    Qt.callLater(function() { keyCatcher.forceActiveFocus() })
  }

  Service {
    id: deck
    settings: root.settings
    panelOpen: root.opened
  }

  IpcHandler {
    target: root.ipcTarget
    function open(): void { root.open() }
    function close(): void { root.close() }
    function show(): void { root.open() }
    function hide(): void { root.close() }
    function toggle(): void { root.toggle() }
    function refresh(): string { deck.refresh(); return "ok" }
    function status(): string { return Model.statusLine(deck.status) }
    function brightness(level: string): string {
      var value = parseInt(level, 10)
      if (!isFinite(value)) return "expected a number 0-100"
      deck.setBrightness(value)
      return "ok"
    }
    function press(index: string): string {
      var value = parseInt(index, 10)
      if (!isFinite(value)) return "expected a key index"
      deck.pressKey(value)
      return "ok"
    }
  }

  // ── bar icon ───────────────────────────────────────────────────────────────

  BarIconButton {
    id: button
    anchors.fill: parent
    bar: root.bar
    iconComponent: Component {
      Item {
        StreamDeckIcon {
          anchors.centerIn: parent
          iconSize: Style.space(13)
          color: root.barIconColor
          // The icon fills in proportionally to how much of the deck is mapped,
          // so a glance at the bar says whether the deck is live and loaded.
          litKeys: {
            if (!deck.connected) return 0
            var total = Number(deck.status.device.keyCount) || 0
            if (total === 0) return 6
            var used = Model.countConfigured(deck.status)
            return Math.max(1, Math.round((used / total) * 6))
          }
          opacity: root.live ? 1.0 : 0.6
        }
      }
    }
    onPressed: function(buttonCode) {
      if (buttonCode === Qt.RightButton) deck.refresh()
      else if (buttonCode === Qt.MiddleButton) deck.toggleDaemon()
      else root.toggle()
    }
  }

  // ── panel ──────────────────────────────────────────────────────────────────

  KeyboardPanel {
    id: panel
    anchorItem: button
    owner: root
    bar: root.bar
    open: root.opened
    focusTarget: keyCatcher
    // Wide enough that an 8-column grid still gives each key a legible face.
    contentWidth: panel.fittedContentWidth(Style.space(520))
    contentHeight: panel.fittedContentHeight(column.implicitHeight, Style.space(640))

    PanelKeyCatcher {
      id: keyCatcher
      anchors.fill: parent
      // While the editor is up its fields own the keyboard — the shipped-panel
      // idiom for inline editors. Escape then bubbles to the editor's own
      // handler instead of tearing down the whole panel mid-edit.
      blocked: root.editing
      onMoveRequested: function(dx, dy) {
        if (!root.cursorActive) { root.cursorActive = true; return }
        root.moveCursor(dx, dy)
      }
      onActivateRequested: if (root.cursorActive) root.activateCursor()
      onCloseRequested: root.close()
      onTabRequested: function(direction) { root.switchPanel(direction) }
      onTextKey: function(t) {
        if (t === "r" || t === "R") deck.refresh()
        else if (t === "p" || t === "P") deck.toggleDaemon()
        else if (t === "e" || t === "E") root.editKey(root.cursorIndex)
        else if (t === " ") deck.pressKey(root.cursorIndex)
      }

      Flickable {
        id: panelFlick
        anchors.fill: parent
        contentWidth: width
        contentHeight: column.implicitHeight
        clip: true
        boundsBehavior: Flickable.StopAtBounds
        flickableDirection: Flickable.VerticalFlick
        interactive: contentHeight > height
        ScrollBar.vertical: ScrollBar { policy: ScrollBar.AsNeeded }

        ColumnLayout {
          id: column
          width: panelFlick.width
          spacing: Style.space(12)

          // ── hero: title, status line, daemon switch ────────────────────────
          Item {
            id: header
            Layout.fillWidth: true
            implicitHeight: hero.implicitHeight

            // Exposed for the hero's trailingControl, whose `root` resolves to
            // PanelHero rather than this Panel.
            readonly property bool ringVisible: false

            PanelHero {
              id: hero
              width: parent.width
              title: "Stream Deck"
              meta: Model.statusLine(deck.status)
              foreground: root.foreground
              fontFamily: root.fontFamily
              iconOpacity: root.live ? 1.0 : 0.5
              iconComponent: Component {
                StreamDeckIcon {
                  iconSize: Style.font.display
                  color: root.live ? root.foreground : root.dim
                  litKeys: deck.connected ? 6 : 0
                }
              }

              trailingControl: Component {
                ToggleSwitch {
                  id: powerSwitch
                  visible: !deck.ctlMissing && deck.status.daemon.state !== "unknown"
                  checked: deck.daemonActive
                  busy: deck.busy
                  foreground: hero.foreground
                  onToggled: deck.toggleDaemon()

                  PanelToolTip {
                    visible: powerSwitch.containsMouse
                    text: deck.daemonActive ? "Stop the daemon" : "Start the daemon"
                    fontFamily: hero.fontFamily
                  }
                }
              }
            }
          }

          // ── messages ───────────────────────────────────────────────────────
          Text {
            Layout.fillWidth: true
            visible: deck.actionStatus !== "" || deck.lastError !== ""
            text: deck.actionStatus !== "" ? deck.actionStatus : deck.lastError
            color: deck.lastError !== "" && deck.actionStatus === "" ? root.urgent : root.dim
            font.family: root.fontFamily
            font.pixelSize: Style.font.bodySmall
            wrapMode: Text.WordWrap
          }

          // streamdeck-ctl is what makes this widget work at all; if it isn't
          // installed, say so plainly instead of showing dead controls.
          ColumnLayout {
            Layout.fillWidth: true
            visible: deck.ctlMissing
            spacing: Style.spacing.labelGap

            Text {
              Layout.fillWidth: true
              text: "streamdeck-ctl was not found"
              color: root.foreground
              font.family: root.fontFamily
              font.pixelSize: Style.font.body
            }

            Text {
              Layout.fillWidth: true
              text: "Build and install it from the streamdeck-go repo:\nmake build-ctl && make install-ctl"
              color: root.dim
              font.family: root.fontFamily
              font.pixelSize: Style.font.caption
              wrapMode: Text.WordWrap
            }
          }

          // ── brightness ─────────────────────────────────────────────────────
          ColumnLayout {
            Layout.fillWidth: true
            visible: !deck.ctlMissing && !root.editing
            spacing: Style.spacing.labelGap

            RowLayout {
              Layout.fillWidth: true
              spacing: Style.space(8)

              PanelSectionHeader {
                Layout.fillWidth: true
                text: "BRIGHTNESS"
                foreground: root.foreground
                fontFamily: root.fontFamily
              }

              Text {
                text: deck.brightness + "%"
                color: root.dim
                font.family: root.fontFamily
                font.pixelSize: Style.font.bodySmall
              }
            }

            PanelSlider {
              Layout.fillWidth: true
              bar: root.bar
              minimum: 0
              maximum: 100
              step: 5
              integer: true
              value: deck.brightness
              enabled: deck.connected
              opacity: deck.connected ? 1.0 : 0.45
              onMoved: function(v) { deck.setBrightness(v) }
            }
          }

          // ── device / daemon facts ──────────────────────────────────────────
          ColumnLayout {
            Layout.fillWidth: true
            visible: !deck.ctlMissing && !root.editing
            spacing: Style.spacing.labelGap

            InfoPair { label: "Device"; value: Model.deviceLine(deck.status) }
            InfoPair {
              label: "Connection"
              value: deck.connected ? "Connected" : "Disconnected"
              emphasised: !deck.connected
            }
            InfoPair { label: "Daemon"; value: Model.daemonLine(deck.status) }
          }

          PanelSeparator {
            Layout.fillWidth: true
            visible: !deck.ctlMissing
            foreground: root.foreground
          }

          // ── key grid ───────────────────────────────────────────────────────
          ColumnLayout {
            Layout.fillWidth: true
            visible: !deck.ctlMissing && !root.editing
            spacing: Style.space(8)

            PanelSectionHeader {
              Layout.fillWidth: true
              text: "KEYS"
              foreground: root.foreground
              fontFamily: root.fontFamily
            }

            KeyGrid {
              Layout.fillWidth: true
              slots: root.slots
              cols: root.cols
              rows: root.rows
              cursorIndex: root.cursorIndex
              cursorActive: root.cursorActive
              foreground: root.foreground
              accent: root.accent
              fontFamily: root.fontFamily
              onKeyFocused: function(index) { root.focusKey(index) }
              // Left-click mirrors a physical press; editing is the secondary action.
              onKeyActivated: function(index) { deck.pressKey(index) }
              // Right-click fires the key, mirroring a physical press.
              onKeySecondary: function(index) { root.editKey(index) }
            }

            Text {
              Layout.fillWidth: true
              text: root.focusedKey
                ? "Key " + root.cursorIndex + " — " + Model.describeKey(root.focusedKey)
                : ""
              color: root.dim
              font.family: root.fontFamily
              font.pixelSize: Style.font.caption
              wrapMode: Text.WordWrap
              maximumLineCount: 2
              elide: Text.ElideRight
            }

            Text {
              Layout.fillWidth: true
              text: "Click a key to run it · right-click to edit"
              color: root.dim
              opacity: 0.7
              font.family: root.fontFamily
              font.pixelSize: Style.font.caption
            }
          }

          // ── editor ─────────────────────────────────────────────────────────
          KeyEditor {
            id: editorPane
            Layout.fillWidth: true
            visible: root.editing
            service: deck
            status: deck.status
            keyIndex: root.editingIndex
            foreground: root.foreground
            accent: root.accent
            fontFamily: root.fontFamily
            onClosed: root.closeEditor()
            onSaved: root.closeEditor()
          }

          PanelSeparator {
            Layout.fillWidth: true
            visible: !deck.ctlMissing && !root.editing
            foreground: root.foreground
          }

          // ── actions ────────────────────────────────────────────────────────
          RowLayout {
            Layout.fillWidth: true
            visible: !deck.ctlMissing && !root.editing
            spacing: Style.space(6)

            Button {
              text: "Restart"
              iconText: "󰑓"
              foreground: root.foreground
              accent: root.accent
              fontFamily: root.fontFamily
              onClicked: deck.restartDaemon()
            }

            Button {
              text: "Config"
              iconText: "󰈔"
              foreground: root.foreground
              accent: root.accent
              fontFamily: root.fontFamily
              onClicked: deck.openConfig()
            }

            Button {
              text: "Icons"
              iconText: "󰉋"
              foreground: root.foreground
              accent: root.accent
              fontFamily: root.fontFamily
              onClicked: deck.openIcons()
            }

            Item { Layout.fillWidth: true }

            PanelActionButton {
              iconText: "󰌱"
              tooltipText: "Follow the daemon log"
              foreground: root.foreground
              fontFamily: root.fontFamily
              onClicked: deck.openLogs()
            }
          }
        }
      }
    }
  }

  // InfoPair is a label on the left, value on the right, with the gap between
  // them absorbing the leftover width.
  component InfoPair: RowLayout {
    id: pair
    property string label: ""
    property string value: ""
    property bool emphasised: false

    Layout.fillWidth: true
    spacing: Style.space(8)

    Text {
      text: pair.label
      color: root.foreground
      opacity: 0.6
      font.family: root.fontFamily
      font.pixelSize: Style.font.bodySmall
    }

    Item { Layout.fillWidth: true }

    Text {
      text: pair.value
      color: pair.emphasised ? root.urgent : root.foreground
      font.family: root.fontFamily
      font.pixelSize: Style.font.bodySmall
      elide: Text.ElideRight
    }
  }
}