package space.darkest.nova.android

import android.Manifest
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.animation.slideInHorizontally
import androidx.compose.animation.slideOutHorizontally
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.rememberNavController
import space.darkest.nova.android.data.AgendaDay
import space.darkest.nova.android.data.CalendarRepository
import space.darkest.nova.android.ui.AgendaScreen
import space.darkest.nova.android.ui.SettingsScreen
import space.darkest.nova.android.ui.theme.NovaTheme

class MainActivity : ComponentActivity() {

    private var agenda by mutableStateOf(emptyList<AgendaDay>())

    private val calendarPermission = registerForActivityResult(
        ActivityResultContracts.RequestPermission()
    ) { granted ->
        if (granted) refreshAgenda()
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()

        calendarPermission.launch(Manifest.permission.READ_CALENDAR)

        setContent {
            NovaTheme {
                val navController = rememberNavController()
                NavHost(
                    navController = navController,
                    startDestination = "agenda",
                    enterTransition = { slideInHorizontally { it } },
                    exitTransition = { slideOutHorizontally { -it } },
                    popEnterTransition = { slideInHorizontally { -it } },
                    popExitTransition = { slideOutHorizontally { it } },
                ) {
                    composable("agenda") {
                        AgendaScreen(
                            agenda = agenda,
                            onSettingsClick = { navController.navigate("settings") },
                        )
                    }
                    composable("settings") {
                        SettingsScreen(onBack = { navController.popBackStack() })
                    }
                }
            }
        }
    }

    override fun onResume() {
        super.onResume()
        refreshAgenda()
    }

    private fun refreshAgenda() {
        agenda = CalendarRepository.getAgenda(this, 14)
    }
}