import QtQuick
import qs.Commons
import qs.Services
import Quickshell

Item {
  id: clockRoot

  property var now

  // Default colors
  property color backgroundColor: Color.mPrimary
  property color clockColor: Color.mOnPrimary
  readonly property real markAlpha: 0.7 // alpha value of hour markers in AnalogClock
  property color secondHandColor: {
    var defaultColor = Color.mError
    var backgroundL = backgroundColor.hslLightness
    var hourMarkL

    if (Settings.data.location.analogClockInCalendar) {
      hourMarkL = (clockColor.hslLightness * markAlpha) + (backgroundL * (1.0 - markAlpha))
    } else {
      hourMarkL = backgroundL
    }

    var bestWorstContrast = -1
    var bestColor = defaultColor

    var candidates = [Color.mSecondary, Color.mTertiary, Color.mError]

    for (var i = 0; i < candidates.length; i++) {
      var candidateColor = candidates[i]
      var candidateL = candidateColor.hslLightness

      var diffBackground = Math.abs(backgroundL - candidateL)
      var diffHourMark = Math.abs(hourMarkL - candidateL)

      var currentWorstContrast = Math.min(diffBackground, diffHourMark)

      if (currentWorstContrast > bestWorstContrast) {
        bestWorstContrast = currentWorstContrast
        bestColor = candidateColor
      }
    }

    return bestColor
  }
  property color progressColor: clockRoot.secondHandColor

  height: Math.round((Style.fontSizeXXXL * 1.9) / 2 * Style.uiScaleRatio) * 2
  width: clockRoot.height

  Loader {
    id: clockLoader
    anchors.fill: parent

    source: Settings.data.location.analogClockInCalendar ? "AnalogClock.qml" : "DigitalClock.qml"

    onLoaded: {
      item.now = Qt.binding(function () {
        return clockRoot.now
      })
      item.backgroundColor = Qt.binding(function () {
        return clockRoot.backgroundColor
      })
      item.clockColor = Qt.binding(function () {
        return clockRoot.clockColor
      })
      if (item.hasOwnProperty("secondHandColor")) {
        item.secondHandColor = Qt.binding(function () {
          return clockRoot.secondHandColor
        })
      }
      if (item.hasOwnProperty("progressColor")) {
        item.progressColor = Qt.binding(function () {
          return clockRoot.progressColor
        })
      }
      if (item.hasOwnProperty("markAlpha")) {
        item.markAlpha = Qt.binding(function () {
          return clockRoot.markAlpha
        })
      }
    }
  }
}