Hinzufügen anderer Techniker zu einem Eintrag ermöglicht (als Admin)

app/src/main/java/com/cyb3rko/techniklogger/ProjectActivity.kt

@@ -9,29 +9,29 @@ import android.view.MenuItem
 import android.view.View
 import android.widget.TextView
 import android.widget.Toast
-
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.LinearLayoutManager
-
 import com.afollestad.materialdialogs.MaterialDialog
 import com.afollestad.materialdialogs.input.getInputField
 import com.afollestad.materialdialogs.input.input
+import com.afollestad.materialdialogs.list.isItemChecked
+import com.afollestad.materialdialogs.list.listItemsMultiChoice
+import com.afollestad.materialdialogs.list.uncheckItems
 import com.cyb3rko.techniklogger.recycler.ProjectTechnikerViewHolder
 import com.cyb3rko.techniklogger.recycler.ProjectTechnikerViewState
 import com.google.firebase.database.*
-
 import es.dmoral.toasty.Toasty
-
 import java.lang.IndexOutOfBoundsException
-
 import me.ibrahimyilmaz.kiel.adapter.RecyclerViewAdapter.Companion.adapterOf
-
 import kotlinx.android.synthetic.main.activity_project.*
 import kotlinx.android.synthetic.main.activity_project.recycler_view
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 
 @SuppressLint("SetTextI18n")
 class ProjectActivity : AppCompatActivity() {
 
+    private var addTechniker = mutableListOf<String>()
     private var adminMode = false
     private var childKey = ""
     private lateinit var databaseReference: DatabaseReference
@@ -63,11 +63,11 @@ class ProjectActivity : AppCompatActivity() {
                         vh.itemView.setOnClickListener {
                             MaterialDialog(this@ProjectActivity)
                                 .show {
-                                    message(0, "Möchtest du \'${text.name}\' entfernen?")
+                                    message(text = "Möchtest du \'${text.name}\' entfernen?")
-                                    positiveButton(0, "Ja") {
+                                    positiveButton(text = "Ja") {
                                         databaseReference.child("techniker").child(text.key).removeValue()
                                     }
-                                    negativeButton(0, "Abbrechen")
+                                    negativeButton(text = "Abbrechen")
                                 }
                         }
                     }
@@ -116,36 +116,118 @@ class ProjectActivity : AppCompatActivity() {
         setDurationEventListener()
 
         add_button.setOnClickListener {
-            val name = getSharedPreferences("Safe", 0).getString("name", "invalid")
+            val name = getSharedPreferences("Safe", 0).getString("name", "invalid")!!
-            var existing = false
+            if (!adminMode) selfAdd(name) else bothAdd(name)
-
-            for (techniker in techniker) {
-                if (name == techniker.name) {
-                    existing = true
-                }
-            }
-
-            if (!existing) {
-                MaterialDialog(this)
-                    .show {
-                        message(0, "Möchtest du dich als involvierter Techniker eintragen?")
-                        positiveButton(0, "Ja") {
-                            databaseReference.child("techniker").push().setValue(name)
-                        }
-                        negativeButton(0, "Abbrechen")
-                    }
-            } else {
-                MaterialDialog(this)
-                    .show {
-                        message(0, "Du bist bereits eingetragen.")
-                        positiveButton(0, "Ok")
-                    }
-            }
         }
 
         emptyCheck()
     }
 
+    private fun technikerExists(name: String): Boolean {
+        for (techniker in techniker) {
+            if (name == techniker.name) {
+                return true
+            }
+        }
+        return false
+    }
+
+    private fun bothAdd(name: String) {
+        MaterialDialog(this)
+            .show {
+                message(text = "Möchtest du dich oder andere eintragen?")
+                positiveButton(text = "Mich") {
+                    selfAdd(name, true)
+                }
+                negativeButton(text = "Andere") {
+                    otherAdd()
+                }
+            }
+    }
+
+    private fun selfAdd(name: String, skip: Boolean = false) {
+        if (!technikerExists(name)) {
+            if (!skip) {
+                MaterialDialog(this).show {
+                    message(text = "Möchtest du dich als involvierter Techniker eintragen?")
+                    positiveButton(text = "Ja") {
+                        databaseReference.child("techniker").push().setValue(name)
+                    }
+                    negativeButton(text = "Abbrechen")
+                }
+            } else {
+                databaseReference.child("techniker").push().setValue(name)
+            }
+        } else {
+            MaterialDialog(this)
+                .show {
+                    message(text = "Du bist bereits eingetragen.")
+                    positiveButton(text = "Ok")
+                }
+        }
+    }
+
+    private fun otherAdd() {
+        val technikerReference = FirebaseDatabase.getInstance().reference.child("techniker")
+        val childReadListener = getReadListener(technikerReference)
+
+        technikerReference.addChildEventListener(childReadListener)
+
+        technikerReference.addListenerForSingleValueEvent(object : ValueEventListener {
+            override fun onDataChange(snapshot: DataSnapshot) {
+                if (snapshot.exists()) {
+                    technikerReference.removeEventListener(childReadListener)
+                    technikerReference.removeEventListener(this)
+                    addTechniker.sort()
+                    val currentSelection = mutableListOf<Int>()
+                    addTechniker.forEachIndexed { index, s ->
+                        techniker.forEach {
+                            if (s == it.name) currentSelection.add(index)
+                        }
+                    }
+                    val intArray = currentSelection.toIntArray()
+                    MaterialDialog(this@ProjectActivity).show {
+                        listItemsMultiChoice(items = addTechniker, initialSelection = intArray, disabledIndices = intArray)
+                        positiveButton(text = "Hinzufügen") {
+                            it.uncheckItems(intArray)
+                            GlobalScope.launch {
+                                addTechniker.forEachIndexed { index, s ->
+                                    if (it.isItemChecked(index)) {
+                                        databaseReference.child("techniker").push().setValue(s)
+                                    }
+                                }
+                                addTechniker.clear()
+                            }
+                        }
+                        negativeButton(text = "Abbrechen") {
+                            addTechniker.clear()
+                        }
+                    }
+                }
+            }
+
+            override fun onCancelled(error: DatabaseError) {
+                technikerReference.removeEventListener(childReadListener)
+                technikerReference.removeEventListener(this)
+            }
+        })
+    }
+
+    private fun getReadListener(databaseRef: DatabaseReference): ChildEventListener {
+        return object : ChildEventListener {
+            override fun onChildAdded(snapshot: DataSnapshot, previousChildName: String?) {
+                addTechniker.add(snapshot.value.toString())
+            }
+
+            override fun onChildChanged(snapshot: DataSnapshot, previousChildName: String?) {}
+            override fun onChildRemoved(snapshot: DataSnapshot) {}
+            override fun onChildMoved(snapshot: DataSnapshot, previousChildName: String?) {}
+            override fun onCancelled(error: DatabaseError) {
+                databaseRef.removeEventListener(this)
+            }
+        }
+    }
+
     private fun setValueEventListener(childName: String, textView: TextView) {
         val valueEventListener = object: ValueEventListener {
             override fun onDataChange(snapshot: DataSnapshot) {
@@ -225,7 +307,7 @@ class ProjectActivity : AppCompatActivity() {
             FirebaseDatabase.getInstance().reference.addChildEventListener(listener)
 
             MaterialDialog(this)
-                .title(0, "Bitte gebe den Admin-Key ein")
+                .title(text = "Bitte gebe den Admin-Key ein")
                 .show {
                     input(hint = "Admin-Key", waitForPositiveButton = false) { _, inputKey ->
                         positiveButton {
@@ -239,7 +321,7 @@ class ProjectActivity : AppCompatActivity() {
                             }
                         }
                     }
-                    positiveButton(0, "Speichern")
+                    positiveButton(text = "Speichern")
                 }
         } else {
             sharedPref.edit().putBoolean("admin", false).apply()