ntfy-android/app/src/main/java/io/heckel/ntfy/ui/AddFragment.kt
2022-02-09 16:20:24 -05:00

499 lines
22 KiB
Kotlin

package io.heckel.ntfy.ui
import android.app.Activity
import android.app.AlertDialog
import android.app.Dialog
import android.content.Context
import android.os.Bundle
import android.text.Editable
import android.text.TextWatcher
import android.util.TypedValue
import android.view.View
import android.view.WindowManager
import android.view.inputmethod.InputMethodManager
import android.widget.*
import androidx.fragment.app.DialogFragment
import androidx.lifecycle.lifecycleScope
import com.google.android.material.textfield.TextInputEditText
import com.google.android.material.textfield.TextInputLayout
import io.heckel.ntfy.BuildConfig
import io.heckel.ntfy.R
import io.heckel.ntfy.db.Repository
import io.heckel.ntfy.db.User
import io.heckel.ntfy.util.Log
import io.heckel.ntfy.msg.ApiService
import io.heckel.ntfy.util.topicUrl
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
class AddFragment : DialogFragment() {
private val api = ApiService()
private lateinit var repository: Repository
private lateinit var subscribeListener: SubscribeListener
private lateinit var subscribeView: View
private lateinit var loginView: View
private lateinit var positiveButton: Button
private lateinit var negativeButton: Button
// Subscribe page
private lateinit var subscribeTopicText: TextInputEditText
private lateinit var subscribeBaseUrlLayout: TextInputLayout
private lateinit var subscribeBaseUrlText: AutoCompleteTextView
private lateinit var subscribeUseAnotherServerCheckbox: CheckBox
private lateinit var subscribeUseAnotherServerDescription: TextView
private lateinit var subscribeInstantDeliveryBox: View
private lateinit var subscribeInstantDeliveryCheckbox: CheckBox
private lateinit var subscribeInstantDeliveryDescription: View
private lateinit var subscribeProgress: ProgressBar
private lateinit var subscribeErrorText: TextView
private lateinit var subscribeErrorTextImage: View
// Login page
private lateinit var users: List<User>
private lateinit var loginUsernameText: TextInputEditText
private lateinit var loginPasswordText: TextInputEditText
private lateinit var loginProgress: ProgressBar
private lateinit var loginErrorText: TextView
private lateinit var loginErrorTextImage: View
private lateinit var baseUrls: List<String> // List of base URLs already used, excluding app_base_url
interface SubscribeListener {
fun onSubscribe(topic: String, baseUrl: String, instant: Boolean)
}
override fun onAttach(context: Context) {
super.onAttach(context)
subscribeListener = activity as SubscribeListener
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
if (activity == null) {
throw IllegalStateException("Activity cannot be null")
}
// Dependencies (Fragments need a default constructor)
repository = Repository.getInstance(requireActivity())
// Build root view
val view = requireActivity().layoutInflater.inflate(R.layout.fragment_add_dialog, null)
// Main "pages"
subscribeView = view.findViewById(R.id.add_dialog_subscribe_view)
subscribeView.visibility = View.VISIBLE
loginView = view.findViewById(R.id.add_dialog_login_view)
loginView.visibility = View.GONE
// Fields for "subscribe page"
subscribeTopicText = view.findViewById(R.id.add_dialog_subscribe_topic_text)
subscribeBaseUrlLayout = view.findViewById(R.id.add_dialog_subscribe_base_url_layout)
subscribeBaseUrlLayout.background = view.background
subscribeBaseUrlText = view.findViewById(R.id.add_dialog_subscribe_base_url_text)
subscribeBaseUrlText.background = view.background
subscribeInstantDeliveryBox = view.findViewById(R.id.add_dialog_subscribe_instant_delivery_box)
subscribeInstantDeliveryCheckbox = view.findViewById(R.id.add_dialog_subscribe_instant_delivery_checkbox)
subscribeInstantDeliveryDescription = view.findViewById(R.id.add_dialog_subscribe_instant_delivery_description)
subscribeUseAnotherServerCheckbox = view.findViewById(R.id.add_dialog_subscribe_use_another_server_checkbox)
subscribeUseAnotherServerDescription = view.findViewById(R.id.add_dialog_subscribe_use_another_server_description)
subscribeProgress = view.findViewById(R.id.add_dialog_subscribe_progress)
subscribeErrorText = view.findViewById(R.id.add_dialog_subscribe_error_text)
subscribeErrorText.visibility = View.GONE
subscribeErrorTextImage = view.findViewById(R.id.add_dialog_subscribe_error_text_image)
subscribeErrorTextImage.visibility = View.GONE
// Hack: Make end icon smaller, see https://stackoverflow.com/a/57098715/1440785
val dimension = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 30f, resources.displayMetrics)
val endIconImageView = subscribeBaseUrlLayout.findViewById<ImageView>(R.id.text_input_end_icon)
endIconImageView.minimumHeight = dimension.toInt()
endIconImageView.minimumWidth = dimension.toInt()
subscribeBaseUrlLayout.requestLayout()
// Fields for "login page"
loginUsernameText = view.findViewById(R.id.add_dialog_login_username)
loginPasswordText = view.findViewById(R.id.add_dialog_login_password)
loginProgress = view.findViewById(R.id.add_dialog_login_progress)
loginErrorText = view.findViewById(R.id.add_dialog_login_error_text)
loginErrorTextImage = view.findViewById(R.id.add_dialog_login_error_text_image)
// Set "Use another server" description based on flavor
subscribeUseAnotherServerDescription.text = if (BuildConfig.FIREBASE_AVAILABLE) {
getString(R.string.add_dialog_use_another_server_description)
} else {
getString(R.string.add_dialog_use_another_server_description_noinstant)
}
// Base URL dropdown behavior; Oh my, why is this so complicated?!
val toggleEndIcon = {
if (subscribeBaseUrlText.text.isNotEmpty()) {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_cancel_gray_24dp)
} else if (baseUrls.isEmpty()) {
subscribeBaseUrlLayout.setEndIconDrawable(0)
} else {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_drop_down_gray_24dp)
}
}
subscribeBaseUrlLayout.setEndIconOnClickListener {
if (subscribeBaseUrlText.text.isNotEmpty()) {
subscribeBaseUrlText.text.clear()
if (baseUrls.isEmpty()) {
subscribeBaseUrlLayout.setEndIconDrawable(0)
} else {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_drop_down_gray_24dp)
}
} else if (subscribeBaseUrlText.text.isEmpty() && baseUrls.isNotEmpty()) {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_drop_up_gray_24dp)
subscribeBaseUrlText.showDropDown()
}
}
subscribeBaseUrlText.setOnDismissListener { toggleEndIcon() }
subscribeBaseUrlText.addTextChangedListener(object : TextWatcher {
override fun afterTextChanged(s: Editable?) {
toggleEndIcon()
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
// Nothing
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
// Nothing
}
})
// Fill autocomplete for base URL & users drop-down
lifecycleScope.launch(Dispatchers.IO) {
// Auto-complete
val appBaseUrl = getString(R.string.app_base_url)
baseUrls = repository.getSubscriptions()
.groupBy { it.baseUrl }
.map { it.key }
.filterNot { it == appBaseUrl }
.sorted()
val activity = activity ?: return@launch // We may have pressed "Cancel"
val adapter = ArrayAdapter(activity, R.layout.fragment_add_dialog_dropdown_item, baseUrls)
activity.runOnUiThread {
subscribeBaseUrlText.threshold = 1
subscribeBaseUrlText.setAdapter(adapter)
if (baseUrls.count() == 1) {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_cancel_gray_24dp)
subscribeBaseUrlText.setText(baseUrls.first())
} else if (baseUrls.count() > 1) {
subscribeBaseUrlLayout.setEndIconDrawable(R.drawable.ic_drop_down_gray_24dp)
} else {
subscribeBaseUrlLayout.setEndIconDrawable(0)
}
}
// Users dropdown
users = repository.getUsers()
}
// Show/hide based on flavor
subscribeInstantDeliveryBox.visibility = if (BuildConfig.FIREBASE_AVAILABLE) View.VISIBLE else View.GONE
// Username/password validation on type
val textWatcher = object : TextWatcher {
override fun afterTextChanged(s: Editable?) {
validateInputLoginView()
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
// Nothing
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
// Nothing
}
}
loginUsernameText.addTextChangedListener(textWatcher)
loginPasswordText.addTextChangedListener(textWatcher)
// Build dialog
val dialog = AlertDialog.Builder(activity)
.setView(view)
.setPositiveButton(R.string.add_dialog_button_subscribe) { _, _ ->
// This will be overridden below to avoid closing the dialog immediately
}
.setNegativeButton(R.string.add_dialog_button_cancel) { _, _ ->
// This will be overridden below
}
.create()
// Show keyboard when the dialog is shown (see https://stackoverflow.com/a/19573049/1440785)
dialog.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
// Add logic to disable "Subscribe" button on invalid input
dialog.setOnShowListener {
positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE)
positiveButton.isEnabled = false
positiveButton.setOnClickListener {
positiveButtonClick()
}
negativeButton = dialog.getButton(AlertDialog.BUTTON_NEGATIVE)
negativeButton.setOnClickListener {
negativeButtonClick()
}
val textWatcher = object : TextWatcher {
override fun afterTextChanged(s: Editable?) {
validateInputSubscribeView()
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
// Nothing
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
// Nothing
}
}
subscribeTopicText.addTextChangedListener(textWatcher)
subscribeBaseUrlText.addTextChangedListener(textWatcher)
subscribeInstantDeliveryCheckbox.setOnCheckedChangeListener { _, isChecked ->
if (isChecked) subscribeInstantDeliveryDescription.visibility = View.VISIBLE
else subscribeInstantDeliveryDescription.visibility = View.GONE
}
subscribeUseAnotherServerCheckbox.setOnCheckedChangeListener { _, isChecked ->
if (isChecked) {
subscribeUseAnotherServerDescription.visibility = View.VISIBLE
subscribeBaseUrlLayout.visibility = View.VISIBLE
subscribeInstantDeliveryBox.visibility = View.GONE
subscribeInstantDeliveryDescription.visibility = View.GONE
} else {
subscribeUseAnotherServerDescription.visibility = View.GONE
subscribeBaseUrlLayout.visibility = View.GONE
subscribeInstantDeliveryBox.visibility = if (BuildConfig.FIREBASE_AVAILABLE) View.VISIBLE else View.GONE
if (subscribeInstantDeliveryCheckbox.isChecked) subscribeInstantDeliveryDescription.visibility = View.VISIBLE
else subscribeInstantDeliveryDescription.visibility = View.GONE
}
validateInputSubscribeView()
}
subscribeUseAnotherServerCheckbox.isChecked = this::baseUrls.isInitialized && baseUrls.count() == 1
// Focus topic text (keyboard is shown too, see above)
subscribeTopicText.requestFocus()
}
return dialog
}
private fun positiveButtonClick() {
val topic = subscribeTopicText.text.toString()
val baseUrl = getBaseUrl()
if (subscribeView.visibility == View.VISIBLE) {
checkReadAndMaybeShowLogin(baseUrl, topic)
} else if (loginView.visibility == View.VISIBLE) {
loginAndMaybeDismiss(baseUrl, topic)
}
}
private fun checkReadAndMaybeShowLogin(baseUrl: String, topic: String) {
subscribeProgress.visibility = View.VISIBLE
subscribeErrorText.visibility = View.GONE
subscribeErrorTextImage.visibility = View.GONE
enableSubscribeView(false)
lifecycleScope.launch(Dispatchers.IO) {
try {
val user = repository.getUser(baseUrl) // May be null
val authorized = api.checkAuth(baseUrl, topic, user)
if (authorized) {
Log.d(TAG, "Access granted to topic ${topicUrl(baseUrl, topic)}")
dismissDialog()
} else {
if (user != null) {
Log.w(TAG, "Access not allowed to topic ${topicUrl(baseUrl, topic)}, but user already exists")
showErrorAndReenableSubscribeView(getString(R.string.add_dialog_login_error_not_authorized, user.username))
} else {
Log.w(TAG, "Access not allowed to topic ${topicUrl(baseUrl, topic)}, showing login dialog")
val activity = activity ?: return@launch // We may have pressed "Cancel"
activity.runOnUiThread {
showLoginView(activity, baseUrl)
}
}
}
} catch (e: Exception) {
Log.w(TAG, "Connection to topic failed: ${e.message}", e)
showErrorAndReenableSubscribeView(e.message)
}
}
}
private fun showErrorAndReenableSubscribeView(message: String?) {
val activity = activity ?: return // We may have pressed "Cancel"
activity.runOnUiThread {
subscribeProgress.visibility = View.GONE
subscribeErrorText.visibility = View.VISIBLE
subscribeErrorText.text = message
subscribeErrorTextImage.visibility = View.VISIBLE
enableSubscribeView(true)
}
}
private fun loginAndMaybeDismiss(baseUrl: String, topic: String) {
loginProgress.visibility = View.VISIBLE
loginErrorText.visibility = View.GONE
loginErrorTextImage.visibility = View.GONE
enableLoginView(false)
val user = User(
baseUrl = baseUrl,
username = loginUsernameText.text.toString(),
password = loginPasswordText.text.toString()
)
lifecycleScope.launch(Dispatchers.IO) {
Log.d(TAG, "Checking read access for user ${user.username} to topic ${topicUrl(baseUrl, topic)}")
try {
val authorized = api.checkAuth(baseUrl, topic, user)
if (authorized) {
Log.d(TAG, "Access granted for user ${user.username} to topic ${topicUrl(baseUrl, topic)}, adding to database")
repository.addUser(user)
dismissDialog()
} else {
Log.w(TAG, "Access not allowed for user ${user.username} to topic ${topicUrl(baseUrl, topic)}")
showErrorAndReenableLoginView(getString(R.string.add_dialog_login_error_not_authorized, user.username))
}
} catch (e: Exception) {
Log.w(TAG, "Connection to topic failed during login: ${e.message}", e)
showErrorAndReenableLoginView(e.message)
}
}
}
private fun showErrorAndReenableLoginView(message: String?) {
val activity = activity ?: return // We may have pressed "Cancel"
activity.runOnUiThread {
loginProgress.visibility = View.GONE
loginErrorText.visibility = View.VISIBLE
loginErrorText.text = message
loginErrorTextImage.visibility = View.VISIBLE
enableLoginView(true)
}
}
private fun negativeButtonClick() {
if (subscribeView.visibility == View.VISIBLE) {
dialog?.cancel()
} else if (loginView.visibility == View.VISIBLE) {
showSubscribeView()
}
}
private fun validateInputSubscribeView() {
lifecycleScope.launch(Dispatchers.IO) {
val baseUrl = getBaseUrl()
val topic = subscribeTopicText.text.toString()
val subscription = repository.getSubscription(baseUrl, topic)
activity?.let {
it.runOnUiThread {
if (subscription != null || DISALLOWED_TOPICS.contains(topic)) {
positiveButton.isEnabled = false
} else if (subscribeUseAnotherServerCheckbox.isChecked) {
positiveButton.isEnabled = topic.isNotBlank()
&& "[-_A-Za-z0-9]{1,64}".toRegex().matches(topic)
&& baseUrl.isNotBlank()
&& "^https?://.+".toRegex().matches(baseUrl)
} else {
positiveButton.isEnabled = topic.isNotBlank()
&& "[-_A-Za-z0-9]{1,64}".toRegex().matches(topic)
}
}
}
}
}
private fun validateInputLoginView() {
if (loginUsernameText.visibility == View.GONE) {
positiveButton.isEnabled = true
} else {
positiveButton.isEnabled = (loginUsernameText.text?.isNotEmpty() ?: false)
&& (loginPasswordText.text?.isNotEmpty() ?: false)
}
}
private fun dismissDialog() {
Log.d(TAG, "Closing dialog and calling onSubscribe handler")
val activity = activity?: return // We may have pressed "Cancel"
activity.runOnUiThread {
val topic = subscribeTopicText.text.toString()
val baseUrl = getBaseUrl()
val instant = if (!BuildConfig.FIREBASE_AVAILABLE || subscribeUseAnotherServerCheckbox.isChecked) {
true
} else {
subscribeInstantDeliveryCheckbox.isChecked
}
subscribeListener.onSubscribe(topic, baseUrl, instant)
dialog?.dismiss()
}
}
private fun getBaseUrl(): String {
return if (subscribeUseAnotherServerCheckbox.isChecked) {
subscribeBaseUrlText.text.toString()
} else {
getString(R.string.app_base_url)
}
}
private fun showSubscribeView() {
resetSubscribeView()
positiveButton.text = getString(R.string.add_dialog_button_subscribe)
negativeButton.text = getString(R.string.add_dialog_button_cancel)
loginView.visibility = View.GONE
subscribeView.visibility = View.VISIBLE
if (subscribeTopicText.requestFocus()) {
val imm = activity?.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
imm?.showSoftInput(subscribeTopicText, InputMethodManager.SHOW_IMPLICIT)
}
}
private fun showLoginView(activity: Activity, baseUrl: String) {
resetLoginView()
loginProgress.visibility = View.INVISIBLE
positiveButton.text = getString(R.string.add_dialog_button_login)
negativeButton.text = getString(R.string.add_dialog_button_back)
subscribeView.visibility = View.GONE
loginView.visibility = View.VISIBLE
if (loginUsernameText.requestFocus()) {
val imm = activity.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
imm?.showSoftInput(loginUsernameText, InputMethodManager.SHOW_IMPLICIT)
}
}
private fun enableSubscribeView(enable: Boolean) {
subscribeTopicText.isEnabled = enable
subscribeBaseUrlText.isEnabled = enable
subscribeInstantDeliveryCheckbox.isEnabled = enable
subscribeUseAnotherServerCheckbox.isEnabled = enable
positiveButton.isEnabled = enable
}
private fun resetSubscribeView() {
subscribeProgress.visibility = View.GONE
subscribeErrorText.visibility = View.GONE
subscribeErrorTextImage.visibility = View.GONE
enableSubscribeView(true)
}
private fun enableLoginView(enable: Boolean) {
loginUsernameText.isEnabled = enable
loginPasswordText.isEnabled = enable
positiveButton.isEnabled = enable
if (enable && loginUsernameText.requestFocus()) {
val imm = activity?.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
imm?.showSoftInput(loginUsernameText, InputMethodManager.SHOW_IMPLICIT)
}
}
private fun resetLoginView() {
loginProgress.visibility = View.GONE
loginErrorText.visibility = View.GONE
loginErrorTextImage.visibility = View.GONE
loginUsernameText.visibility = View.VISIBLE
loginUsernameText.text?.clear()
loginPasswordText.visibility = View.VISIBLE
loginPasswordText.text?.clear()
enableLoginView(true)
}
companion object {
const val TAG = "NtfyAddFragment"
private val DISALLOWED_TOPICS = listOf("docs", "static", "file") // If updated, also update in server
}
}