FidoActivity.kt

FidoActivity.kt

import android.app.Activity
import android.content.Context
import android.content.Intent
import android.media.RingtoneManager
import android.net.Uri
import android.os.Bundle
import android.util.Log
import androidx.activity.result.contract.ActivityResultContract
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import kotlin.coroutines.suspendCoroutine

class FidoActivity : AppCompatActivity() {
    private val controller:FidoResultController by lazy { FidoResultController() }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_fido)

        lifecycleScope.launch {
            val result = controller.launch(this@FidoActivity)
            Log.d("TAG", "onCreate: $result")
        }
    }

    class FidoResultController {
        private val delegator: FidoDelegator = FidoDelegator()

        suspend fun launch(componentActivity: androidx.activity.ComponentActivity) {
            val intent = delegator.resister()

            suspendCoroutine<Uri> {
                val content = componentActivity.registerForActivityResult(FidoContract(intent)) { uri: Uri? ->
                    uri ?: return@registerForActivityResult it.resumeWith(Result.failure(Error("empty uri")))
                    it.resumeWith(Result.success(uri))
                }
                content.launch(0)
            }
        }

        class FidoContract(private val intent: Intent) : ActivityResultContract<Int, Uri?>() { // TODO Fix input, output types
            override fun createIntent(context: Context, ringtoneType: Int) = intent

            override fun parseResult(resultCode: Int, result: Intent?): Uri? {
                if (resultCode != Activity.RESULT_OK) {
                    return null
                }
                return result?.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI)
            }
        }

        class FidoDelegator {
            suspend fun resister(): Intent = withContext(Dispatchers.IO) {
                // ...
                return@withContext Intent()
            }
        }
    }
}