1 files changed, 139 insertions, 0 deletions
diff --git a/cashier/src/main/java/net/taler/cashier/ConfigFragment.kt b/cashier/src/main/java/net/taler/cashier/ConfigFragment.kt
new file mode 100644
index 0000000..b9a97e5
--- /dev/null
+++ b/cashier/src/main/java/net/taler/cashier/ConfigFragment.kt
@@ -0,0 +1,139 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 Taler Systems S.A.
+ *
+ * GNU Taler is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3, or (at your option) any later version.
+ *
+ * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+package net.taler.cashier
+
+import android.os.Bundle
+import android.text.method.LinkMovementMethod
+import android.view.LayoutInflater
+import android.view.View
+import android.view.View.INVISIBLE
+import android.view.View.VISIBLE
+import android.view.ViewGroup
+import android.view.inputmethod.InputMethodManager
+import androidx.core.content.ContextCompat.getSystemService
+import androidx.core.text.HtmlCompat
+import androidx.core.text.HtmlCompat.FROM_HTML_MODE_LEGACY
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Observer
+import androidx.navigation.fragment.findNavController
+import com.google.android.material.snackbar.Snackbar
+import com.google.android.material.snackbar.Snackbar.LENGTH_LONG
+import kotlinx.android.synthetic.main.fragment_config.*
+
+private const val URL_BANK_TEST = "https://bank.test.taler.net"
+private const val URL_BANK_TEST_REGISTER = "$URL_BANK_TEST/accounts/register"
+
+class ConfigFragment : Fragment() {
+
+    private val viewModel: MainViewModel by activityViewModels()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_config, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        if (savedInstanceState == null) {
+            if (viewModel.config.bankUrl.isBlank()) {
+                urlView.editText!!.setText(URL_BANK_TEST)
+            } else {
+                urlView.editText!!.setText(viewModel.config.bankUrl)
+            }
+            usernameView.editText!!.setText(viewModel.config.username)
+            passwordView.editText!!.setText(viewModel.config.password)
+        } else {
+            urlView.editText!!.setText(savedInstanceState.getCharSequence("urlView"))
+            usernameView.editText!!.setText(savedInstanceState.getCharSequence("usernameView"))
+            passwordView.editText!!.setText(savedInstanceState.getCharSequence("passwordView"))
+        }
+        saveButton.setOnClickListener {
+            val config = Config(
+                bankUrl = urlView.editText!!.text.toString(),
+                username = usernameView.editText!!.text.toString(),
+                password = passwordView.editText!!.text.toString()
+            )
+            if (checkConfig(config)) {
+                // show progress
+                saveButton.visibility = INVISIBLE
+                progressBar.visibility = VISIBLE
+                // kick off check and observe result
+                viewModel.checkAndSaveConfig(config)
+                viewModel.configResult.observe(viewLifecycleOwner, onConfigResult)
+                // hide keyboard
+                val inputMethodManager =
+                    getSystemService(requireContext(), InputMethodManager::class.java)!!
+                inputMethodManager.hideSoftInputFromWindow(view.windowToken, 0)
+            }
+        }
+        demoView.text = HtmlCompat.fromHtml(
+            getString(R.string.config_demo_hint, URL_BANK_TEST_REGISTER), FROM_HTML_MODE_LEGACY
+        )
+        demoView.movementMethod = LinkMovementMethod.getInstance()
+    }
+
+    override fun onStart() {
+        super.onStart()
+        // focus on password if it is the only missing value (like after locking)
+        if (urlView.editText!!.text.isNotBlank()
+            && usernameView.editText!!.text.isNotBlank()
+            && passwordView.editText!!.text.isBlank()) {
+            passwordView.editText!!.requestFocus()
+        }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        // for some reason automatic restore isn't working at the moment!?
+        outState.putCharSequence("urlView", urlView.editText?.text)
+        outState.putCharSequence("usernameView", usernameView.editText?.text)
+        outState.putCharSequence("passwordView", passwordView.editText?.text)
+    }
+
+    private fun checkConfig(config: Config): Boolean {
+        if (!config.bankUrl.startsWith("https://")) {
+            urlView.error = getString(R.string.config_bank_url_error)
+            urlView.requestFocus()
+            return false
+        }
+        if (config.username.isBlank()) {
+            usernameView.error = getString(R.string.config_username_error)
+            usernameView.requestFocus()
+            return false
+        }
+        urlView.isErrorEnabled = false
+        return true
+    }
+
+    private val onConfigResult = Observer<ConfigResult> { result ->
+        if (result == null) return@Observer
+        if (result.success) {
+            val action = ConfigFragmentDirections.actionConfigFragmentToBalanceFragment()
+            findNavController().navigate(action)
+        } else {
+            val res = if (result.authError) R.string.config_error_auth else R.string.config_error
+            Snackbar.make(view!!, res, LENGTH_LONG).show()
+        }
+        saveButton.visibility = VISIBLE
+        progressBar.visibility = INVISIBLE
+        viewModel.configResult.removeObservers(viewLifecycleOwner)
+    }
+
+}