From 2a5b91a92b4c25dd53e04d322251867921a8a21c Mon Sep 17 00:00:00 2001
From: kindOfCurly <marie.sautmann@gmx.de>
Date: Fri, 5 May 2023 15:27:20 +0200
Subject: [PATCH] #4: remember IP addresses

- every valid input for IP address is saved
- saved IP addresses are shown in an AutoCompleteTextView
---
 .../java/com/android/dippid/DebugFragment.kt  | 52 ++++++++++++++-----
 app/src/main/res/layout/fragment_debug.xml    | 13 ++++-
 2 files changed, 50 insertions(+), 15 deletions(-)

diff --git a/app/src/main/java/com/android/dippid/DebugFragment.kt b/app/src/main/java/com/android/dippid/DebugFragment.kt
index 57f5be5..5e82f85 100644
--- a/app/src/main/java/com/android/dippid/DebugFragment.kt
+++ b/app/src/main/java/com/android/dippid/DebugFragment.kt
@@ -10,22 +10,21 @@ import android.hardware.SensorManager
 import android.os.Bundle
 import android.view.MotionEvent
 import android.view.View
-import android.widget.Button
-import android.widget.EditText
-import android.widget.TextView
-import android.widget.Toast
+import android.widget.*
 import androidx.appcompat.widget.SwitchCompat
 import androidx.core.widget.doOnTextChanged
 import androidx.fragment.app.Fragment
 import java.net.InetAddress
 import java.util.*
 
+
 class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
 
     private var listener: DataListener? = null
 
     var ipAddress: String = ""
     private var port: Int = 0
+    private var ipAddressSet: MutableSet<String> = mutableSetOf()
 
     private var stateButton1 = 0
     private var stateButton2 = 0
@@ -76,7 +75,7 @@ class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
         )
 
         // init UI
-        val ipInput = view.findViewById<EditText>(R.id.input_ip)
+        val ipInput = view.findViewById<AutoCompleteTextView>(R.id.input_ip)
         val portInput = view.findViewById<EditText>(R.id.input_port)
         val button1 = view.findViewById<Button>(R.id.button_1)
         val button2 = view.findViewById<Button>(R.id.button_2)
@@ -86,9 +85,21 @@ class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
         sendingSwitch.isChecked = (activity as MainActivity).isSendingActive()
 
         val sharedPref = activity?.getPreferences(Context.MODE_PRIVATE)
-        val savedIP = sharedPref?.getString("IP_address", ipAddress)
+        val savedIpAddresses = sharedPref?.getStringSet(
+            "IP_addresses",
+            ipAddressSet
+        )
+        val savedIP = sharedPref?.getString("last_IP", ipAddress)
         val savedPort = sharedPref?.getInt("PORT", port)
 
+        val adapter: ArrayAdapter<String> = ArrayAdapter(
+            activity as MainActivity,
+            android.R.layout.simple_dropdown_item_1line,
+            savedIpAddresses!!.toTypedArray()
+        )
+        ipInput.setAdapter(adapter)
+
+
         if (!savedIP.equals(ipAddress) && (savedIP != null) && (savedPort != port) && (savedPort != null)) {
             ipAddress = savedIP
             port = savedPort
@@ -105,13 +116,20 @@ class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
                 ipInput.error = "Should not be empty."
             }
 
-            if (sharedPref != null) {
-                with(sharedPref.edit()) {
-                    putString("IP_address", ipAddress)
-                    apply()
+            if (isValidIP(ipAddress)) {
+
+                ipAddressSet.add(ipAddress)
+
+                if (sharedPref != null) {
+                    with(sharedPref.edit()) {
+                        putString("last_IP", ipAddress)
+                        putStringSet("IP_addresses", ipAddressSet)
+                        apply()
+                    }
                 }
             }
 
+
         }
         portInput.doOnTextChanged { text, _, _, _ ->
             if (text != null) {
@@ -277,10 +295,7 @@ class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
     }
 
     private fun activateSending() {
-        if (ipAddress.matches(("^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}" + "(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\$").toRegex()) &&
-            port.toString()
-                .matches(("^([0-9]{1,4}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])\$").toRegex())
-        ) {
+        if (isValidIP(ipAddress) && isValidPort(port)) {
             listener?.onSendingActivated(port, InetAddress.getByName(ipAddress))
         } else {
             view?.findViewById<SwitchCompat>(R.id.switch_send)?.isChecked = false
@@ -292,4 +307,13 @@ class DebugFragment : Fragment(R.layout.fragment_debug), SensorEventListener {
         listener?.onSendingDeactivated()
     }
 
+    private fun isValidIP(ip: String): Boolean {
+        return ip.matches(("^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}" + "(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\$").toRegex())
+    }
+
+    private fun isValidPort(port: Int): Boolean {
+        return port.toString()
+            .matches(("^([0-9]{1,4}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])\$").toRegex())
+    }
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_debug.xml b/app/src/main/res/layout/fragment_debug.xml
index 5e02df9..512ff6f 100644
--- a/app/src/main/res/layout/fragment_debug.xml
+++ b/app/src/main/res/layout/fragment_debug.xml
@@ -10,10 +10,21 @@
         android:layout_height="wrap_content"
         android:padding="12dp">
 
-        <EditText
+        <!--<EditText
+            android:id="@+id/input_ip"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="IP address"
+            android:inputType="text"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />-->
+
+        <AutoCompleteTextView
             android:id="@+id/input_ip"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:completionThreshold="0"
             android:hint="IP address"
             android:inputType="text"
             app:layout_constraintEnd_toEndOf="parent"