package com.example.architecture

import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.fragment.app.FragmentActivity
import androidx.fragment.compose.AndroidFragment
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.rememberNavController
import com.example.architecture.core.design.system.theme.AppTheme
import com.example.architecture.feature.about.presentation.AboutRoute
import com.example.architecture.feature.about.presentation.aboutGraph
import com.example.architecture.feature.characters.presentation.compose.CharacterDetailRoute
import com.example.architecture.feature.characters.presentation.compose.CharacterListRoute
import com.example.architecture.feature.characters.presentation.compose.charactersGraph
import com.example.architecture.feature.characters.presentation.views.CharacterListFragment

/**
 * Hosts the single Compose NavHost and owns every cross-feature / cross-toolkit wiring:
 * - the characters graph (Compose list + detail),
 * - the About graph (MVVM contrast),
 * - the Views renderer embedded via [AndroidFragment] (Compose↔View interop).
 *
 * Extends [FragmentActivity] (not plain ComponentActivity) so [AndroidFragment] has a FragmentManager.
 */
class MainActivity : FragmentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            AppTheme {
                val navController = rememberNavController()
                NavHost(
                    navController = navController,
                    startDestination = CharacterListRoute,
                ) {
                    charactersGraph(
                        navController = navController,
                        onOpenAbout = { navController.navigate(AboutRoute) },
                        onOpenViewsList = { navController.navigate(CharactersViewsRoute) },
                    )
                    aboutGraph(
                        onNavigateBack = { navController.popBackStack() },
                    )
                    // Compose↔View interop: the same characters list, rendered by a Fragment. :app
                    // injects the navigation callbacks so the Views module stays nav-agnostic.
                    composable<CharactersViewsRoute> {
                        AndroidFragment<CharacterListFragment> { fragment ->
                            fragment.onCharacterClick = { id ->
                                navController.navigate(CharacterDetailRoute(id))
                            }
                            fragment.onNavigateBack = { navController.popBackStack() }
                        }
                    }
                }
            }
        }
    }
}