---

package ru.notesapp.ui

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Notes
import androidx.compose.material.icons.filled.Settings
import androidx.compose.material3.Icon
import androidx.compose.material3.NavigationBar
import androidx.compose.material3.NavigationBarItem
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.fragment.compose.AndroidFragment
import androidx.navigation.NavType
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.currentBackStackEntryAsState
import androidx.navigation.compose.rememberNavController
import androidx.navigation.navArgument
import ru.notesapp.ui.navigation.Routes
import ru.notesapp.ui.theme.ThemeVariant

@Composable
fun RootScreen(
    currentTheme: ThemeVariant,
    onThemeChange: (ThemeVariant) -> Unit,
    modifier: Modifier = Modifier,
) {
    val navController = rememberNavController()
    val backStackEntry by navController.currentBackStackEntryAsState()
    val currentRoute = backStackEntry?.destination?.route

    val showBottomBar = currentRoute == Routes.NOTES || currentRoute == Routes.SETTINGS

    Scaffold(
        modifier = modifier.fillMaxSize(),
        bottomBar = {
            if (showBottomBar) {
                NavigationBar {
                    NavigationBarItem(
                        selected = currentRoute == Routes.NOTES,
                        onClick = {
                            navController.navigate(Routes.NOTES) {
                                popUpTo(Routes.NOTES) { inclusive = false }
                                launchSingleTop = true
                            }
                        },
                        icon = { Icon(Icons.Filled.Notes, contentDescription = "Заметки") },
                        label = { Text("Заметки") }
                    )
                    NavigationBarItem(
                        selected = currentRoute == Routes.SETTINGS,
                        onClick = {
                            navController.navigate(Routes.SETTINGS) {
                                popUpTo(Routes.NOTES) { inclusive = false }
                                launchSingleTop = true
                            }
                        },
                        icon = { Icon(Icons.Filled.Settings, contentDescription = "Настройки") },
                        label = { Text("Настройки") }
                    )
                }
            }
        }
    ) { innerPadding ->
        NavHost(
            navController = navController,
            startDestination = Routes.NOTES,
            modifier = Modifier.padding(innerPadding)
        ) {
            composable(Routes.NOTES) {
                NotesListScreen(
                    onNoteClick = { note ->
                        navController.navigate(Routes.note(note.id))
                    }
                )
            }

            composable(
                route = Routes.NOTE,
                arguments = listOf(navArgument("id") { type = NavType.LongType })
            ) { entry ->
                val id = entry.arguments?.getLong("id") ?: 0L
                NoteDetailScreen(
                    noteId = id,
                    onBack = { navController.popBackStack() }
                )
            }

            composable(Routes.SETTINGS) {
                AndroidFragment<SettingsFragment>()
            }
        }
    }
}