package core.presentation.components

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.size
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Bookmark
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import coil.compose.AsyncImage
import androidx.compose.foundation.shape.RoundedCornerShape
import core.presentation.theme.SoftSquareShape

@Composable
fun AppAvatar(
    url: String?,
    name: String,
    size: Dp = 48.dp,
    modifier: Modifier = Modifier
) {
    val isSavedMessages = remember(name) { 
        name.equals("Избранное", ignoreCase = true) || name.equals("Saved Messages", ignoreCase = true) 
    }
    
    val initials = remember(name) {
        if (isSavedMessages) "" else {
            val words = name.trim().split("\\s+".toRegex())
            if (words.size >= 2) {
                (words[0].take(1) + words[1].take(1)).uppercase()
            } else if (name.length >= 2) {
                name.take(2).uppercase()
            } else {
                name.take(1).uppercase()
            }
        }
    }

    val avatarColor = Color(0xFF4AA6F3) // Premium Telegram Blue (Web)

    val cornerRadius = remember(size) {
        if (size <= 32.dp) (size.value * 0.25).dp else 12.dp
    }

    Box(
        modifier = modifier
            .size(size)
            .clip(RoundedCornerShape(cornerRadius))
            .background(avatarColor),
        contentAlignment = Alignment.Center
    ) {
        if (!url.isNullOrBlank()) {
            AsyncImage(
                model = url,
                contentDescription = name,
                modifier = Modifier.size(size),
                contentScale = ContentScale.Crop
            )
        } else if (isSavedMessages) {
            Icon(
                imageVector = Icons.Default.Bookmark,
                contentDescription = null,
                tint = Color.White,
                modifier = Modifier.size((size.value * 0.5).dp)
            )
        } else {
            Text(
                text = initials,
                color = Color.White,
                fontSize = (size.value * 0.4).sp,
                fontWeight = androidx.compose.ui.text.font.FontWeight.Bold,
                style = MaterialTheme.typography.titleMedium
            )
        }
    }
}