/*
 * Copyright © 2014-2021 The Android Password Store Authors. All Rights Reserved.
 * SPDX-License-Identifier: GPL-3.0-only
 */

package dev.msfjarvis.aps.ui.crypto

import android.content.Intent
import android.os.Bundle
import androidx.activity.result.IntentSenderRequest
import androidx.activity.result.contract.ActivityResultContracts.StartIntentSenderForResult
import androidx.lifecycle.lifecycleScope
import com.github.ajalt.timberkt.e
import com.github.michaelbull.result.onFailure
import com.github.michaelbull.result.runCatching
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import me.msfjarvis.openpgpktx.util.OpenPgpApi
import me.msfjarvis.openpgpktx.util.OpenPgpUtils
import org.openintents.openpgp.IOpenPgpService2

class GetKeyIdsActivity : BasePgpActivity() {

  private val userInteractionRequiredResult =
    registerForActivityResult(StartIntentSenderForResult()) { result ->
      if (result.data == null || result.resultCode == RESULT_CANCELED) {
        setResult(RESULT_CANCELED, result.data)
        finish()
        return@registerForActivityResult
      }
      getKeyIds(result.data!!)
    }

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    bindToOpenKeychain(this)
  }

  override fun onBound(service: IOpenPgpService2) {
    super.onBound(service)
    getKeyIds()
  }

  override fun onError(e: Exception) {
    e(e)
  }

  /** Get the Key ids from OpenKeychain */
  private fun getKeyIds(data: Intent = Intent()) {
    data.action = OpenPgpApi.ACTION_GET_KEY_IDS
    lifecycleScope.launch(Dispatchers.Main) {
      val result = withContext(Dispatchers.IO) { checkNotNull(api).executeApi(data, null, null) }
      when (result.getIntExtra(OpenPgpApi.RESULT_CODE, OpenPgpApi.RESULT_CODE_ERROR)) {
        OpenPgpApi.RESULT_CODE_SUCCESS -> {
          runCatching {
            val ids =
              result.getLongArrayExtra(OpenPgpApi.RESULT_KEY_IDS)?.map { OpenPgpUtils.convertKeyIdToHex(it) }
                ?: emptyList()
            val keyResult = Intent().putExtra(OpenPgpApi.EXTRA_KEY_IDS, ids.toTypedArray())
            setResult(RESULT_OK, keyResult)
            finish()
          }
            .onFailure { e -> e(e) }
        }
        OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED -> {
          val sender = getUserInteractionRequestIntent(result)
          userInteractionRequiredResult.launch(IntentSenderRequest.Builder(sender).build())
        }
        OpenPgpApi.RESULT_CODE_ERROR -> handleError(result)
      }
    }
  }
}