package ai.openclaw.app.ui

import androidx.compose.animation.core.LinearEasing
import androidx.compose.animation.core.RepeatMode
import androidx.compose.animation.core.animateFloat
import androidx.compose.animation.core.infiniteRepeatable
import androidx.compose.animation.core.rememberInfiniteTransition
import androidx.compose.animation.core.tween
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Brush
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.drawscope.Stroke
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp

/**
 * Full-screen talk-mode presence indicator with pulsing rings and status fallback text.
 */
@Composable
fun TalkOrbOverlay(
  seamColor: Color,
  statusText: String,
  isListening: Boolean,
  isSpeaking: Boolean,
  modifier: Modifier = Modifier,
) {
  val transition = rememberInfiniteTransition(label = "talk-orb")
  val t by
    transition.animateFloat(
      initialValue = 0f,
      targetValue = 1f,
      animationSpec =
        infiniteRepeatable(
          animation = tween(durationMillis = 1500, easing = LinearEasing),
          repeatMode = RepeatMode.Restart,
        ),
      label = "pulse",
    )

  val trimmed = statusText.trim()
  val showStatus = trimmed.isNotEmpty() && trimmed != "Off"
  val phase =
    when {
      isSpeaking -> "Speaking"
      isListening -> "Listening"
      else -> "Thinking"
    }

  Column(
    modifier = modifier.padding(24.dp),
    horizontalAlignment = Alignment.CenterHorizontally,
    verticalArrangement = Arrangement.spacedBy(12.dp),
  ) {
    Box(contentAlignment = Alignment.Center) {
      Canvas(modifier = Modifier.size(360.dp)) {
        val center = this.center
        val baseRadius = size.minDimension * 0.30f

        val ring1 = 1.05f + (t * 0.25f)
        val ring2 = 1.20f + (t * 0.55f)
        val ringAlpha1 = (1f - t) * 0.34f
        val ringAlpha2 = (1f - t) * 0.22f

        drawCircle(
          color = seamColor.copy(alpha = ringAlpha1),
          radius = baseRadius * ring1,
          center = center,
          style = Stroke(width = 3.dp.toPx()),
        )
        drawCircle(
          color = seamColor.copy(alpha = ringAlpha2),
          radius = baseRadius * ring2,
          center = center,
          style = Stroke(width = 3.dp.toPx()),
        )

        drawCircle(
          brush =
            Brush.radialGradient(
              colors =
                listOf(
                  seamColor.copy(alpha = 0.92f),
                  seamColor.copy(alpha = 0.40f),
                  Color.Black.copy(alpha = 0.56f),
                ),
              center = center,
              radius = baseRadius * 1.35f,
            ),
          radius = baseRadius,
          center = center,
        )

        drawCircle(
          color = seamColor.copy(alpha = 0.34f),
          radius = baseRadius,
          center = center,
          style = Stroke(width = 1.dp.toPx()),
        )
      }
    }

    if (showStatus) {
      Surface(
        color = Color.Black.copy(alpha = 0.40f),
        shape = CircleShape,
      ) {
        Text(
          text = trimmed,
          modifier = Modifier.padding(horizontal = 14.dp, vertical = 8.dp),
          color = Color.White.copy(alpha = 0.92f),
          style = MaterialTheme.typography.labelLarge,
          fontWeight = FontWeight.SemiBold,
        )
      }
    } else {
      Text(
        text = phase,
        color = Color.White.copy(alpha = 0.80f),
        style = MaterialTheme.typography.labelLarge,
        fontWeight = FontWeight.SemiBold,
      )
    }
  }
}
