UnoGame/app/src/main/java/com/unogame/ui/screens/MainMenuScreen.kt

package com.unogame.ui.screens

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.*
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.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.unogame.ui.theme.*

@Composable
fun MainMenuScreen(
    onLocalGame: () -> Unit,
    onOnlineGame: () -> Unit,
    onScoreboard: () -> Unit,
    onRules: () -> Unit,
    onSettings: () -> Unit
) {
    Box(
        modifier = Modifier
            .fillMaxSize()
            .background(LocalTableBg.current.color),
        contentAlignment = Alignment.Center
    ) {
        Column(
            modifier = Modifier
                .fillMaxSize()
                .verticalScroll(rememberScrollState())
                .padding(32.dp),
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            // Title
            Text(
                text = "UNO",
                fontSize = 72.sp,
                fontWeight = FontWeight.Black,
                color = GoldAccent,
                textAlign = TextAlign.Center
            )
            Text(
                text = "卡牌游戏",
                fontSize = 18.sp,
                color = Color.White.copy(alpha = 0.6f),
                textAlign = TextAlign.Center
            )

            Spacer(modifier = Modifier.height(48.dp))

            // 1. 本地模式
            Button(
                onClick = onLocalGame,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(56.dp),
                shape = RoundedCornerShape(16.dp),
                colors = ButtonDefaults.buttonColors(
                    containerColor = DarkSurface,
                    contentColor = UnoGreen
                )
            ) {
                Icon(Icons.Default.PhoneAndroid, contentDescription = null)
                Spacer(modifier = Modifier.width(12.dp))
                Text("本地模式", fontSize = 18.sp, fontWeight = FontWeight.Bold)
            }

            Spacer(modifier = Modifier.height(16.dp))

            // 2. 联机模式
            Button(
                onClick = onOnlineGame,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(56.dp),
                shape = RoundedCornerShape(16.dp),
                colors = ButtonDefaults.buttonColors(
                    containerColor = DarkSurface,
                    contentColor = GoldAccent
                )
            ) {
                Icon(Icons.Default.Wifi, contentDescription = null)
                Spacer(modifier = Modifier.width(12.dp))
                Text("联机模式", fontSize = 18.sp, fontWeight = FontWeight.Bold)
            }

            Spacer(modifier = Modifier.height(16.dp))

            // 3. 排行榜
            Button(
                onClick = onScoreboard,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(56.dp),
                shape = RoundedCornerShape(16.dp),
                colors = ButtonDefaults.buttonColors(
                    containerColor = DarkSurface,
                    contentColor = UnoPurple.copy(alpha = 0.8f)
                )
            ) {
                Icon(Icons.Default.EmojiEvents, contentDescription = null)
                Spacer(modifier = Modifier.width(12.dp))
                Text("排行榜", fontSize = 18.sp, fontWeight = FontWeight.Bold)
            }

            Spacer(modifier = Modifier.height(16.dp))

            // 4. 规则说明
            Button(
                onClick = onRules,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(56.dp),
                shape = RoundedCornerShape(16.dp),
                colors = ButtonDefaults.buttonColors(
                    containerColor = DarkSurface,
                    contentColor = Color.White.copy(alpha = 0.7f)
                )
            ) {
                Icon(Icons.Default.MenuBook, contentDescription = null)
                Spacer(modifier = Modifier.width(12.dp))
                Text("规则说明", fontSize = 18.sp, fontWeight = FontWeight.Bold)
            }

            Spacer(modifier = Modifier.height(16.dp))

            // 5. 游戏设置
            Button(
                onClick = onSettings,
                modifier = Modifier
                    .fillMaxWidth()
                    .height(56.dp),
                shape = RoundedCornerShape(16.dp),
                colors = ButtonDefaults.buttonColors(
                    containerColor = DarkSurface,
                    contentColor = Color.White.copy(alpha = 0.5f)
                )
            ) {
                Icon(Icons.Default.Settings, contentDescription = null)
                Spacer(modifier = Modifier.width(12.dp))
                Text("游戏设置", fontSize = 18.sp, fontWeight = FontWeight.Bold)
            }
        }
    }
}