Bimba.git

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package ml.adamsprogs.bimba.settings

import android.content.Context
import android.content.Intent
import android.content.SharedPreferences
import android.net.ConnectivityManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.content.res.AppCompatResources
import androidx.core.content.edit
import androidx.core.widget.addTextChangedListener
import com.google.android.material.dialog.MaterialAlertDialogBuilder
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.MainScope
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import ml.adamsprogs.bimba.R
import ml.adamsprogs.bimba.api.FeedsResponse
import ml.adamsprogs.bimba.api.FeedsSuccess
import ml.adamsprogs.bimba.api.Server
import ml.adamsprogs.bimba.api.getFeeds
import ml.adamsprogs.bimba.databinding.ActivityServerChooserBinding
import ml.adamsprogs.bimba.settings.feeds.FeedChooserActivity

class ServerChooserActivity : AppCompatActivity() {
	private var _binding: ActivityServerChooserBinding? = null
	private val binding get() = _binding!!

	private val activityLauncher =
		registerForActivityResult(ActivityResultContracts.StartActivityForResult()) {
			if (!preferences.getBoolean("inFeedsTransaction", true)) {
				finish()
			}
		}

	private lateinit var preferences: SharedPreferences

	override fun onCreate(savedInstanceState: Bundle?) {
		super.onCreate(savedInstanceState)
		preferences = getSharedPreferences("shp", MODE_PRIVATE)

		if (intent.getBooleanExtra("simple", false)) {
			setServer("bimba.apiote.xyz", "")
			runFeedsActivity()
			finish()
		}

		_binding = ActivityServerChooserBinding.inflate(layoutInflater)
		setContentView(binding.root)

		preferences.edit(true) {
			putBoolean("inFeedsTransaction", true)
		}

		binding.button.isEnabled = false
		binding.serverField.editText!!.addTextChangedListener { editable ->
			binding.button.isEnabled = !editable.isNullOrBlank()
		}

		if (!preferences.getBoolean("firstRun", true)) {
			Server.get(this).let { server ->
				binding.serverField.editText!!.setText(server.host)
				binding.tokenField.editText!!.setText(server.token)
			}
		}

		binding.button.setOnClickListener {
			setServer(
				binding.serverField.editText!!.text.toString(),
				binding.tokenField.editText!!.text.toString()
			)
			checkServer()
		}
	}

	private fun showDialog(
		title: Int,
		description: Int,
		icon: Int,
		onPositive: (() -> Unit)?
	) {
		MaterialAlertDialogBuilder(this)
			.setIcon(AppCompatResources.getDrawable(this, icon))
			.setTitle(getString(title))
			.setMessage(getString(description))
			.setNegativeButton(resources.getString(R.string.cancel)) { _, _ -> }.apply {
				if (onPositive != null) {
					setPositiveButton(resources.getString(R.string.cont)) { _, _ ->
						onPositive()
					}
				}
			}
			.show()
	}

	private fun checkServer() {
		// todo [api-freeze] check is really bimba (/.well-known/bimba)
		MainScope().launch {
			val result = getFeeds(
				getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager,
				Server.get(this@ServerChooserActivity)
			)
			if (result.error != null) {
				Log.w("ServerChooser", "$result")
				showDialog(R.string.error, result.error.stringResource, result.error.imageResource, null)
				return@launch
			}

			val response = withContext(Dispatchers.IO) {
				FeedsResponse.unmarshal(result.stream!!)
			}
			if (response is FeedsSuccess) {
				val token = preferences.getString("token", "")
				if (response.rateLimited && token == "") {
					showDialog(
						R.string.rate_limit,
						R.string.server_rate_limited_question,
						R.drawable.error_limit
					) {
						runFeedsActivity()
					}
					return@launch
				}
				if (response.private && token == "") {
					showDialog(R.string.error, R.string.server_private_question, R.drawable.error_sec, null)
					return@launch
				}
				runFeedsActivity()
			} else {
				// todo error handling
				// todo [api-freeze] check api version
			}
		}
	}

	private fun setServer(hostname: String, token: String) {
		preferences.edit(true) {
			putString("host", hostname)
			putString("token", token)
		}
	}

	private fun runFeedsActivity() {
		activityLauncher.launch(Intent(this, FeedChooserActivity::class.java))
	}
}