package dev.adriankuta.flights

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.SystemBarStyle
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
import androidx.lifecycle.lifecycleScope
import dagger.hilt.android.AndroidEntryPoint
import dev.adriankuta.flights.ui.FlightsApp
import dev.adriankuta.flights.ui.designsystem.theme.FlightsTheme
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

@AndroidEntryPoint
class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        val splashScreen = installSplashScreen()
        super.onCreate(savedInstanceState)

        var isLoading: Boolean by mutableStateOf(true)

        lifecycleScope.launch {
            @Suppress("MagicNumber")
            delay(500)
            isLoading = false
        }

        splashScreen.setKeepOnScreenCondition {
            isLoading
        }

        enableEdgeToEdge()

        setContent {
            val darkTheme = shouldUseDarkTheme()
            // Update the edge to edge configuration to match the theme
            // This is the same parameters as the default enableEdgeToEdge call, but we manually
            // resolve whether or not to show dark theme using uiState, since it can be different
            // than the configuration's dark theme value based on the user preference.
            DisposableEffect(darkTheme) {
                enableEdgeToEdge(
                    statusBarStyle = SystemBarStyle.auto(
                        android.graphics.Color.TRANSPARENT,
                        android.graphics.Color.TRANSPARENT,
                    ) { darkTheme },
                    navigationBarStyle = SystemBarStyle.auto(
                        lightScrim,
                        darkScrim,
                    ) { darkTheme },
                )
                onDispose {}
            }
            FlightsTheme {
                FlightsApp()
            }
        }
    }
}

/**
 * Returns `true` if dark theme should be used, as a function of the [uiState] and the
 * current system context.
 */
@Composable
private fun shouldUseDarkTheme(): Boolean = isSystemInDarkTheme()

/**
 * The default light scrim, as defined by androidx and the platform:
 * https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:activity/activity/src/main/java/androidx/activity/EdgeToEdge.kt;l=35-38;drc=27e7d52e8604a080133e8b842db10c89b4482598
 */
private val lightScrim = android.graphics.Color.argb(0xe6, 0xFF, 0xFF, 0xFF)

/**
 * The default dark scrim, as defined by androidx and the platform:
 * https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:activity/activity/src/main/java/androidx/activity/EdgeToEdge.kt;l=40-44;drc=27e7d52e8604a080133e8b842db10c89b4482598
 */
private val darkScrim = android.graphics.Color.argb(0x80, 0x1b, 0x1b, 0x1b)