package at.lockstep.player

import android.app.Application
import android.app.NotificationChannel
import android.app.NotificationManager
import android.os.Build
import at.lockstep.jukebox.Jukebox
import at.lockstep.jukebox.PlaylistRepository
import at.lockstep.player.data.db.AppDatabase
import okhttp3.Interceptor
import java.util.concurrent.atomic.AtomicReference

class LockstepApplication : Application() {
    private val spotifyAccessTokenRef = AtomicReference<String?>(null)

    val database: AppDatabase by lazy { AppDatabase.getInstance(this) }

    val playlistRepository: PlaylistRepository by lazy {
        Jukebox.playlistRepository(
            this,
            Interceptor { chain ->
                val token = spotifyAccessTokenRef.get()
                val req =
                    if (!token.isNullOrBlank()) {
                        chain.request().newBuilder()
                            .header("Authorization", "Bearer $token")
                            .build()
                    } else {
                        chain.request()
                    }
                chain.proceed(req)
            },
            "${BuildConfig.LOCKSTEP_API_BASE_URL.trimEnd('/')}/",
        )
    }

    fun setSpotifyAccessTokenForApi(token: String?) {
        spotifyAccessTokenRef.set(token)
    }

    override fun onCreate() {
        super.onCreate()
        ensurePlaybackChannel()
    }

    private fun ensurePlaybackChannel() {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) return
        val manager = getSystemService(NotificationManager::class.java) ?: return
        val channel =
            NotificationChannel(
                PLAYBACK_NOTIFICATION_CHANNEL_ID,
                getString(R.string.notification_channel_playback_name),
                NotificationManager.IMPORTANCE_LOW,
            ).apply { description = getString(R.string.notification_channel_playback_description) }
        manager.createNotificationChannel(channel)
    }

    companion object {
        const val PLAYBACK_NOTIFICATION_CHANNEL_ID = "lockstep_playback"
        const val PLAYBACK_NOTIFICATION_ID = 1001
    }
}