package com.aistudio.bonjuteri.jwlry.ui.screens

import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.automirrored.filled.ArrowBack
import androidx.compose.material.icons.filled.LocalShipping
import androidx.compose.material.icons.filled.ShoppingBag
import androidx.compose.material.icons.outlined.Diamond
import androidx.compose.material3.Card
import androidx.compose.material3.CardDefaults
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.HorizontalDivider
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.material3.TopAppBarDefaults
import androidx.compose.runtime.Composable
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.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import coil.compose.AsyncImage
import coil.request.ImageRequest
import com.aistudio.bonjuteri.jwlry.model.Order
import com.aistudio.bonjuteri.jwlry.ui.components.EmptyStateView
import com.aistudio.bonjuteri.jwlry.ui.theme.GoldPrimary
import com.aistudio.bonjuteri.jwlry.ui.theme.GoldSubtle
import com.aistudio.bonjuteri.jwlry.ui.theme.LightSurface
import com.aistudio.bonjuteri.jwlry.ui.theme.MutedGrey
import com.aistudio.bonjuteri.jwlry.ui.theme.OffWhite
import com.aistudio.bonjuteri.jwlry.ui.theme.PrimaryBlack
import com.aistudio.bonjuteri.jwlry.ui.theme.PureWhite
import com.aistudio.bonjuteri.jwlry.ui.theme.SurfaceBorder

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun OrdersScreen(
    orders: List<Order>,
    onBackClick: () -> Unit,
    modifier: Modifier = Modifier
) {
    Scaffold(
        topBar = {
            TopAppBar(
                title = { Text("Siparişlerim", fontWeight = FontWeight.Bold) },
                navigationIcon = {
                    IconButton(onClick = onBackClick) {
                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Geri")
                    }
                },
                colors = TopAppBarDefaults.topAppBarColors(containerColor = PureWhite)
            )
        }
    ) { padding ->
        if (orders.isEmpty()) {
            EmptyStateView(
                icon = Icons.Filled.ShoppingBag,
                title = "Henüz Siparişiniz Bulunmuyor",
                description = "Verdiğiniz tüm siparişleri ve kargo takip durumlarını bu ekrandan takip edebilirsiniz.",
                modifier = Modifier.padding(padding).fillMaxSize()
            )
        } else {
            LazyColumn(
                modifier = modifier
                    .fillMaxSize()
                    .padding(padding)
                    .background(OffWhite)
                    .padding(14.dp),
                verticalArrangement = Arrangement.spacedBy(14.dp)
            ) {
                items(orders, key = { it.id }) { order ->
                    Card(
                        modifier = Modifier.fillMaxWidth(),
                        colors = CardDefaults.cardColors(containerColor = PureWhite),
                        shape = RoundedCornerShape(14.dp),
                        elevation = CardDefaults.cardElevation(defaultElevation = 2.dp)
                    ) {
                        Column(modifier = Modifier.padding(16.dp)) {
                            // Order Header
                            Row(
                                modifier = Modifier.fillMaxWidth(),
                                horizontalArrangement = Arrangement.SpaceBetween,
                                verticalAlignment = Alignment.CenterVertically
                            ) {
                                Column {
                                    Text(
                                        text = order.orderNumber,
                                        style = MaterialTheme.typography.titleMedium.copy(
                                            fontWeight = FontWeight.Bold,
                                            color = PrimaryBlack
                                        )
                                    )
                                    Text(
                                        text = order.formattedDate,
                                        style = MaterialTheme.typography.bodySmall.copy(color = MutedGrey)
                                    )
                                }

                                // Status badge
                                val status = order.statusEnum
                                Box(
                                    modifier = Modifier
                                        .background(Color(status.colorHex).copy(alpha = 0.15f), RoundedCornerShape(12.dp))
                                        .padding(horizontal = 10.dp, vertical = 4.dp)
                                ) {
                                    Text(
                                        text = status.displayName,
                                        color = Color(status.colorHex),
                                        fontWeight = FontWeight.Bold,
                                        fontSize = 11.sp
                                    )
                                }
                            }

                            HorizontalDivider(modifier = Modifier.padding(vertical = 10.dp), color = SurfaceBorder)

                            // Items in Order
                            Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
                                order.items.forEach { item ->
                                    Row(
                                        modifier = Modifier.fillMaxWidth(),
                                        verticalAlignment = Alignment.CenterVertically
                                    ) {
                                        Box(
                                            modifier = Modifier
                                                .size(44.dp)
                                                .clip(RoundedCornerShape(6.dp))
                                                .background(LightSurface),
                                            contentAlignment = Alignment.Center
                                        ) {
                                            if (item.imageUrl.isNotBlank()) {
                                                AsyncImage(
                                                    model = ImageRequest.Builder(LocalContext.current)
                                                        .data(item.imageUrl)
                                                        .crossfade(true)
                                                        .build(),
                                                    contentDescription = item.title,
                                                    modifier = Modifier.fillMaxSize(),
                                                    contentScale = ContentScale.Crop
                                                )
                                            } else {
                                                Icon(Icons.Outlined.Diamond, contentDescription = null, tint = GoldPrimary, modifier = Modifier.size(20.dp))
                                            }
                                        }

                                        Spacer(modifier = Modifier.width(10.dp))

                                        Column(modifier = Modifier.weight(1f)) {
                                            Text(text = item.title, style = MaterialTheme.typography.bodyMedium.copy(fontWeight = FontWeight.Medium), maxLines = 1)
                                            Text(text = "${item.quantity} adet × ${com.aistudio.bonjuteri.jwlry.model.Product.formatCurrency(item.price)}", style = MaterialTheme.typography.bodySmall.copy(color = MutedGrey))
                                        }

                                        Text(text = com.aistudio.bonjuteri.jwlry.model.Product.formatCurrency(item.totalPrice), style = MaterialTheme.typography.titleSmall.copy(fontWeight = FontWeight.Bold))
                                    }
                                }
                            }

                            HorizontalDivider(modifier = Modifier.padding(vertical = 10.dp), color = SurfaceBorder)

                            // Cargo & tracking info if available
                            if (order.trackingNumber.isNotBlank()) {
                                Card(
                                    modifier = Modifier.fillMaxWidth(),
                                    colors = CardDefaults.cardColors(containerColor = GoldSubtle),
                                    shape = RoundedCornerShape(8.dp)
                                ) {
                                    Row(modifier = Modifier.padding(10.dp), verticalAlignment = Alignment.CenterVertically) {
                                        Icon(Icons.Filled.LocalShipping, contentDescription = null, tint = GoldPrimary, modifier = Modifier.size(18.dp))
                                        Spacer(modifier = Modifier.width(8.dp))
                                        Text(
                                            text = "Kargo: ${order.cargoCompany} - Takip No: ${order.trackingNumber}",
                                            fontSize = 12.sp,
                                            fontWeight = FontWeight.SemiBold,
                                            color = PrimaryBlack
                                        )
                                    }
                                }
                                Spacer(modifier = Modifier.height(10.dp))
                            }

                            // Payment status & Total
                            Row(
                                modifier = Modifier.fillMaxWidth(),
                                horizontalArrangement = Arrangement.SpaceBetween,
                                verticalAlignment = Alignment.CenterVertically
                            ) {
                                Text(
                                    text = "Ödeme: ${order.paymentStatusEnum.displayName}",
                                    fontSize = 12.sp,
                                    color = MutedGrey
                                )

                                Text(
                                    text = "Toplam: ${order.formattedTotal}",
                                    style = MaterialTheme.typography.titleLarge.copy(
                                        fontWeight = FontWeight.Black,
                                        color = PrimaryBlack,
                                        fontSize = 16.sp
                                    )
                                )
                            }
                        }
                    }
                }
            }
        }
    }
}