added functionality to group rename & leave buttons, added ability to transfer ownership of a group

app/src/main/java/org/foxarmy/barcodescannerforemployees/Net.kt

@@ -653,4 +653,69 @@ class Net {
 
         return response
     }
+
+    fun renameGroup(groupId: Int, newName: String): Response {
+        lateinit var response: Response
+
+        thread {
+            val client = OkHttpClient()
+
+            val body = FormBody.Builder()
+                .add("name", newName)
+                .build()
+
+            val request = Request.Builder()
+                .url("https://$server/api/group/rename/$groupId")
+                .post(body)
+                .addHeader("Authorization", "Bearer $token")
+                .addHeader("accept-language", language)
+                .build()
+
+            response = client.newCall(request).execute()
+        }.join()
+
+        return response
+    }
+
+    fun transfer_ownership(groupId: Int, userId: Int): Response {
+        lateinit var response: Response
+
+        thread {
+            val client = OkHttpClient()
+
+            val body = FormBody.Builder()
+                .add("userId", userId.toString())
+                .build()
+
+            val request = Request.Builder()
+                .url("https://$server/api/group/transferOwnership/$groupId")
+                .post(body)
+                .addHeader("Authorization", "Bearer $token")
+                .addHeader("accept-language", language)
+                .build()
+
+            response = client.newCall(request).execute()
+        }.join()
+
+        return response
+    }
+
+    fun leaveGroup(groupId: Int): Response {
+        lateinit var response: Response
+
+        thread {
+            val client = OkHttpClient()
+
+            val request = Request.Builder()
+                .url("https://$server/api/group/leave/$groupId")
+                .get()
+                .addHeader("Authorization", "Bearer $token")
+                .addHeader("accept-language", language)
+                .build()
+
+            response = client.newCall(request).execute()
+        }.join()
+
+        return response
+    }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/Utils.kt

@@ -3,6 +3,7 @@ package org.foxarmy.barcodescannerforemployees
 import android.app.Activity
 import android.content.Context
 import android.content.ContextWrapper
+import android.content.Intent
 import android.content.SharedPreferences
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
@@ -18,6 +19,7 @@ import androidx.core.content.FileProvider
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKeys
 import com.google.firebase.components.BuildConfig
+import org.foxarmy.barcodescannerforemployees.activities.LoginActivity
 import java.io.File
 import java.io.FileInputStream
 import java.io.FileOutputStream
@@ -141,10 +143,14 @@ fun getUnitNameById(context: Context, id: Int): String {
     }
 }
 
-fun parseArray(input: String): IntArray {
+fun parseIntArray(input: String): IntArray {
     return input.trim('[', ']').split(",").map { it.trim().toInt() }.toIntArray()
 }
 
+fun parseStringList(input: String): List<String> {
+    return input.trim('[', ']').split(",").map { it.trim() }.toList()
+}
+
 fun calculateMd5Hash(file: File): String {
     val digest = MessageDigest.getInstance("MD5")
     val fis = FileInputStream(file)
@@ -204,7 +210,9 @@ fun noInternetConnectionAvailableNotification(context: Context) {
                 sharedPreferences.edit().putString("server", "").apply()
                 sharedPreferences.edit().putStringSet("groups", emptySet()).apply()
                 sharedPreferences.edit().putString("currentGroup", "").apply()
-                exitProcess(0)
+                val intent = Intent(context, LoginActivity::class.java)
+                context.startActivity(intent)
+                context.finish()
             }.show()
     }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/LoginActivity.kt

@@ -9,7 +9,7 @@ import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityLoginBinding
 import org.foxarmy.barcodescannerforemployees.noInternetConnectionAvailableNotification
-import org.foxarmy.barcodescannerforemployees.parseArray
+import org.foxarmy.barcodescannerforemployees.parseIntArray
 import org.json.JSONObject
 
 class LoginActivity : AppCompatActivity() {
@@ -53,7 +53,12 @@ class LoginActivity : AppCompatActivity() {
 
 
                     val r = net.getMyGroups().body!!.string()
-                    val myGroups = parseArray(r).map { a -> a.toString()}
+                    if (r == "" || r == "[]") {
+                        val intent = Intent(this, GroupActivity::class.java)
+                        startActivity(intent)
+                        finish()
+                    }
+                    val myGroups = parseIntArray(r).map { a -> a.toString()}
 
                     sharedPreferences.edit().putStringSet("groups", myGroups.toSet()).apply()
                     sharedPreferences.edit().putString("currentGroup", myGroups[0]).apply()

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ManageGroupActivity.kt

@@ -1,19 +1,28 @@
 package org.foxarmy.barcodescannerforemployees.activities
 
 import android.content.Context
+import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
+import android.widget.EditText
+import android.widget.PopupMenu
+import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
+import okhttp3.Response
 import org.foxarmy.barcodescannerforemployees.Net
+import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityManageGroupBinding
-import org.foxarmy.barcodescannerforemployees.parseArray
+import org.foxarmy.barcodescannerforemployees.parseIntArray
 import org.foxarmy.barcodescannerforemployees.views.GroupMemberView
 
 class ManageGroupActivity : AppCompatActivity(){
     private lateinit var binding: ActivityManageGroupBinding
-    private var isAdmin: Boolean = true
+    private var isAdmin: Boolean = false
     private lateinit var sharedPreferences: SharedPreferences
+    private lateinit var net: Net
+    private var groupId: Int = 0
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -21,30 +30,94 @@ class ManageGroupActivity : AppCompatActivity(){
         binding = ActivityManageGroupBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
-        val groupId = intent.extras!!.getInt("groupId")
+        groupId = intent.extras!!.getInt("groupId")
 
         sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
 
-        val net = Net()
+        net = Net()
 
         net.token = sharedPreferences.getString("token", "")!!
         net.server = sharedPreferences.getString("server", "")!!
         net.language = sharedPreferences.getString("language", "en-US")!!
 
 
-        val users = parseArray(net.getUsersInGroup(groupId).body!!.string())
+        setUpMembers()
+
+        binding.renameButton.setOnClickListener {
+            val input = EditText(this)
+            AlertDialog.Builder(this)
+                .setTitle(getString(R.string.new_group_name))
+                .setView(input)
+                .setPositiveButton(getString(R.string.ok)) { _, _, ->
+                    val newName = input.text.toString()
+                    val response = net.renameGroup(groupId, newName)
+                    Toast.makeText(this, response.body!!.string(), Toast.LENGTH_LONG).show()
+                }
+                .setNegativeButton(getString(R.string.cancel)) {_, _, ->
+
+                }.show()
+        }
+
+        binding.leaveButton.setOnClickListener {
+            val response: Response = net.leaveGroup(groupId)
+            Toast.makeText(this, response.body!!.string(), Toast.LENGTH_SHORT).show()
+            if (response.code == 200) {
+                val groups = sharedPreferences.getStringSet("groups", emptySet())!!
+                groups.remove(groupId.toString())
+                if (groups.isEmpty()) {
+                    sharedPreferences.edit().putStringSet("groups", groups).apply()
+                    val intent = Intent(this, GroupActivity::class.java)
+                    startActivity(intent)
+                    finish()
+                }
+                sharedPreferences.edit().putString("currentGroup", groups.toList()[0]).apply()
+                finish()
+            }
+        }
+
+        setUpAdminRelatedButtons()
+    }
+
+    private fun setUpMembers() {
+        val users = parseIntArray(net.getUsersInGroup(groupId).body!!.string())
 
         for (user in users) {
             val groupMemberView = GroupMemberView(this, this as Context, net.getUsernameById(user).body!!.string(), user)
 
+            groupMemberView.setOnLongClickListener { view ->
+                if (!amIAnAdminIn(groupId)) return@setOnLongClickListener false
+                val popupMenu = PopupMenu(this, groupMemberView)
+                popupMenu.inflate(R.menu.user_pop_menu)
+                popupMenu.setOnMenuItemClickListener { item ->
+                    when(item.itemId) {
+                        R.id.kick -> {
+
+
+
+                            setUpMembers()
+                            false
+                        }
+                        R.id.transfer_ownership -> {
+                            AlertDialog.Builder(this)
+                                .setMessage(getString(R.string.transfer_ownership_confirmation))
+                                .setPositiveButton(R.string.yes) { _, _, ->
+                                    val response: Response = net.transfer_ownership(groupId, (view as GroupMemberView).userId)
+                                    Toast.makeText(this, response.body!!.string(), Toast.LENGTH_SHORT).show()
+                                    setUpAdminRelatedButtons()
+                                }
+                                .setNegativeButton(R.string.no) { _, _, -> }
+                                .show()
+                            true
+                        }
+                        else -> false
+                    }
+                }
+                popupMenu.show()
+                true
+            }
+
             binding.groupsContent.addView(groupMemberView)
         }
-
-        isAdmin = amIAnAdminIn(groupId)
-
-        if (!isAdmin) {
-            binding.renameButton.visibility = View.GONE
-        }
     }
 
     fun amIAnAdminIn(groupId: Int): Boolean {
@@ -57,4 +130,12 @@ class ManageGroupActivity : AppCompatActivity(){
         val result = sharedPreferences.getInt("userId", 0) == net.getGroupAdminId(groupId).body!!.string().toInt()
         return result
     }
+
+    fun setUpAdminRelatedButtons() {
+        isAdmin = amIAnAdminIn(groupId)
+
+        if (!isAdmin) {
+            binding.renameButton.visibility = View.GONE
+        }
+    }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MyGroupsActivity.kt

@@ -8,7 +8,7 @@ import androidx.appcompat.app.AppCompatActivity
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityMyGroupsBinding
-import org.foxarmy.barcodescannerforemployees.parseArray
+import org.foxarmy.barcodescannerforemployees.parseIntArray
 import org.foxarmy.barcodescannerforemployees.views.GroupView
 
 class MyGroupsActivity : AppCompatActivity(){
@@ -28,7 +28,7 @@ class MyGroupsActivity : AppCompatActivity(){
         net.server = sharedPreferences.getString("server", "")!!
         net.language = sharedPreferences.getString("language", "en-US")!!
 
-        val groups = parseArray(net.getMyGroups().body!!.string())
+        val groups = parseIntArray(net.getMyGroups().body!!.string())
 
         val container = findViewById<LinearLayout>(R.id.groupsLayout)
 

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/NavigatorActivity.kt

@@ -4,6 +4,8 @@ import android.app.Activity
 import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
+import org.foxarmy.barcodescannerforemployees.Net
+import org.foxarmy.barcodescannerforemployees.parseStringList
 
 class NavigatorActivity : Activity() {
 
@@ -37,6 +39,25 @@ class NavigatorActivity : Activity() {
     }
 
     private fun isInGroup(): Boolean {
-        return sharedPreferences.getStringSet("groups", emptySet())!!.isNotEmpty()
+        val groups = sharedPreferences.getStringSet("groups", emptySet())!!
+        if (groups.isEmpty()) {
+            if(sharedPreferences.getString("token", "")!! == "") return false
+            val net = Net()
+            net.language = sharedPreferences.getString("language", "")!!
+            net.server = sharedPreferences.getString("server", "")!!
+            net.token = sharedPreferences.getString("token", "")!!
+
+            val response = net.getMyGroups().body!!.string()
+            if (response == "" || response == "[]") return false
+            val groupsFromServer = parseStringList(response)
+            if (groupsFromServer.isNotEmpty()) {
+                sharedPreferences.edit().putStringSet("groups", groupsFromServer.toSet()).apply()
+                sharedPreferences.edit().putString("currentGroup", groupsFromServer[0]).apply()
+                return true
+            } else {
+                return false
+            }
+        }
+        return true
     }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/views/GroupMemberView.kt

@@ -10,7 +10,7 @@ import org.foxarmy.barcodescannerforemployees.R
 class GroupMemberView : LinearLayout {
 
     private var username: String
-    private var userId: Int
+    var userId: Int
 
     constructor(activity: Activity, context: Context, username: String, userId: Int) : super(context) {
 

app/src/main/res/menu/user_pop_menu.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:title="@string/kick" android:id="@+id/kick"/>
+    <item android:title="@string/transfer_ownership" android:id="@+id/transfer_ownership"/>
+</menu>

app/src/main/res/values-ru/strings.xml

@@ -120,6 +120,12 @@
     <string name="online_only_feature">Эта возможность доступна только с онлайн аккаунтом</string>
     <string name="username_changed">Имя пользователя изменено. Пожалуйста, перезайдите</string>
     <string name="password_changed">Пароль изменён. Пожалуйста, перезайдите</string>
+    <string name="new_group_name">Enter new group name</string>
+    <string name="kick">Kick</string>
+    <string name="transfer_ownership">Transfer ownership</string>
+    <string name="transfer_ownership_confirmation">Are you sure you want to transfer ownership on current group to that
+        user?
+    </string>
     <string-array name="languages">
         <item>en-US</item>
         <item>ru-RU</item>

app/src/main/res/values/strings.xml

@@ -118,6 +118,12 @@
     <string name="online_only_feature">This feature is online only</string>
     <string name="username_changed">Your username has been changed. Please, relogin</string>
     <string name="password_changed">You password was changed. Please, relogin</string>
+    <string name="new_group_name">Enter new group name</string>
+    <string name="kick">Kick</string>
+    <string name="transfer_ownership">Transfer ownership</string>
+    <string name="transfer_ownership_confirmation">Are you sure you want to transfer ownership on current group to that
+        user?
+    </string>
     <string-array name="languages">
         <item>en-US</item>
         <item>ru-RU</item>