package core.presentation.components

import androidx.compose.animation.*
import androidx.compose.foundation.background
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.*
import androidx.compose.material.icons.rounded.*
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.compose.ui.viewinterop.AndroidView
import androidx.media3.common.MediaItem
import androidx.media3.common.Player
import androidx.media3.exoplayer.ExoPlayer
import androidx.media3.ui.PlayerView
import androidx.media3.ui.AspectRatioFrameLayout
import kotlinx.coroutines.delay
import androidx.annotation.OptIn
import androidx.media3.common.util.UnstableApi
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.ui.draw.clip

@OptIn(UnstableApi::class)
@Composable
fun AppVideoPlayer(
    url: String,
    modifier: Modifier = Modifier,
    useController: Boolean = true,
    autoPlay: Boolean = true,
    isMuted: Boolean = false,
    onVideoFinished: () -> Unit = {}
) {
    val context = LocalContext.current
    val exoPlayer = remember {
        ExoPlayer.Builder(context).build().apply {
            val mediaItem = MediaItem.fromUri(url)
            setMediaItem(mediaItem)
            volume = if (isMuted) 0f else 1f
            prepare()
            playWhenReady = autoPlay
        }
    }

    var isPlaying by remember { mutableStateOf(autoPlay) }
    var currentPosition by remember { mutableLongStateOf(0L) }
    var duration by remember { mutableLongStateOf(0L) }
    var isControlsVisible by remember { mutableStateOf(true) }
    var isDragging by remember { mutableStateOf(false) }

    DisposableEffect(Unit) {
        val listener = object : Player.Listener {
            override fun onIsPlayingChanged(playing: Boolean) {
                isPlaying = playing
            }
            override fun onPlaybackStateChanged(state: Int) {
                if (state == Player.STATE_READY) {
                    duration = exoPlayer.duration
                } else if (state == Player.STATE_ENDED) {
                    onVideoFinished()
                }
            }
        }
        exoPlayer.addListener(listener)
        onDispose {
            exoPlayer.removeListener(listener)
            exoPlayer.release()
        }
    }

    LaunchedEffect(isPlaying, isDragging) {
        if (isPlaying && !isDragging) {
            while (isPlaying) {
                currentPosition = exoPlayer.currentPosition
                delay(500)
            }
        }
    }

    Box(modifier = modifier.background(Color.Black)) {
        AndroidView(
            factory = {
                PlayerView(it).apply {
                    player = exoPlayer
                    this.useController = false // We use our own UI if needed
                    resizeMode = AspectRatioFrameLayout.RESIZE_MODE_FIT
                    setBackgroundColor(android.graphics.Color.BLACK)
                }
            },
            modifier = Modifier.fillMaxSize().clickable(
                interactionSource = remember { MutableInteractionSource() },
                indication = null,
                enabled = useController // Only clickable if we have controls
            ) {
                isControlsVisible = !isControlsVisible
            }
        )

        AnimatedVisibility(
            visible = isControlsVisible && useController,
            enter = fadeIn(),
            exit = fadeOut()
        ) {
            Box(
                modifier = Modifier
                    .fillMaxSize()
                    .background(Color.Black.copy(alpha = 0.3f))
            ) {
                // Center Controls
                Row(
                    modifier = Modifier.align(Alignment.Center),
                    verticalAlignment = Alignment.CenterVertically,
                    horizontalArrangement = Arrangement.spacedBy(24.dp)
                ) {
                    IconButton(
                        onClick = { exoPlayer.seekTo((exoPlayer.currentPosition - 10000).coerceAtLeast(0)) },
                        modifier = Modifier.size(48.dp)
                    ) {
                        Icon(Icons.Rounded.Replay10, contentDescription = null, tint = Color.White, modifier = Modifier.size(36.dp))
                    }

                    Box(
                        modifier = Modifier
                            .size(64.dp)
                            .clip(CircleShape)
                            .background(Color.White.copy(alpha = 0.2f))
                            .clickable { if (isPlaying) exoPlayer.pause() else exoPlayer.play() },
                        contentAlignment = Alignment.Center
                    ) {
                        Icon(
                            imageVector = if (isPlaying) Icons.Rounded.Pause else Icons.Rounded.PlayArrow,
                            contentDescription = null,
                            tint = Color.White,
                            modifier = Modifier.size(44.dp)
                        )
                    }

                    IconButton(
                        onClick = { exoPlayer.seekTo((exoPlayer.currentPosition + 10000).coerceAtMost(duration)) },
                        modifier = Modifier.size(48.dp)
                    ) {
                        Icon(Icons.Rounded.Forward10, contentDescription = null, tint = Color.White, modifier = Modifier.size(36.dp))
                    }
                }

                // Bottom Controls
                Column(
                    modifier = Modifier
                        .align(Alignment.BottomCenter)
                        .padding(bottom = 16.dp, start = 16.dp, end = 16.dp)
                ) {
                    Slider(
                        value = currentPosition.toFloat(),
                        onValueChange = {
                            isDragging = true
                            currentPosition = it.toLong()
                        },
                        onValueChangeFinished = {
                            exoPlayer.seekTo(currentPosition)
                            isDragging = false
                        },
                        valueRange = 0f..(duration.toFloat().coerceAtLeast(1f)),
                        colors = SliderDefaults.colors(
                            thumbColor = Color.White,
                            activeTrackColor = Color.White,
                            inactiveTrackColor = Color.White.copy(alpha = 0.3f)
                        ),
                        modifier = Modifier.height(24.dp)
                    )

                    Row(
                        modifier = Modifier.fillMaxWidth(),
                        horizontalArrangement = Arrangement.SpaceBetween,
                        verticalAlignment = Alignment.CenterVertically
                    ) {
                        Text(
                            text = "${formatTime(currentPosition)} · ${formatTime(duration)}",
                            color = Color.White,
                            fontSize = 12.sp
                        )
                        
                        IconButton(onClick = { /* Settings */ }) {
                            Icon(Icons.Rounded.Settings, contentDescription = null, tint = Color.White, modifier = Modifier.size(20.dp))
                        }
                    }
                }
            }
        }
    }
}

private fun formatTime(ms: Long): String {
    val totalSeconds = ms / 1000
    val minutes = totalSeconds / 60
    val seconds = totalSeconds % 60
    return String.format("%02d:%02d", minutes, seconds)
}