Finish NotenActivity and FachActivity

app/src/main/java/com/schoolapp/cleverclass/NotenActivity.kt

@@ -3,9 +3,11 @@ package com.schoolapp.cleverclass
 import android.content.Context
 import android.content.Intent
 import android.content.SharedPreferences
+import android.content.SharedPreferences.Editor
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
@@ -20,9 +22,12 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.outlined.Delete
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.BottomAppBar
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.Divider
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
@@ -44,17 +49,46 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.unit.dp
 import com.schoolapp.cleverclass.ui.theme.CleverClassTheme
 import com.schoolapp.cleverclass.ui.theme.TextOnColouredButton
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
-val subjects = listOf("Biologie","Chemie","Deutsch","Englisch","Ethik","Evangelisch","Französisch",
-    "Geographie","Geschichte","Informatik","Katolisch","Kunst","Latein","Mathe","Musik","Physik",
-    "Pulitik und Gesellschaft","Sport","Wirtschaft")
+private val subjects = listOf(
+    "Mathe", "Deutsch", "Englisch", "Französisch", "Latein",
+    "Physik", "Chemie", "Biologie", "Informatik",
+    "Geographie", "Wirtschaft", "Geschichte", "Politik und Gesellschaft",
+    "Ethik", "Evangelisch", "Katholisch",
+    "Kunst", "Musik", "Sport"
+)
 
-val colors = listOf(
-    Color(0xFF69F0AE),
-    Color(0xFFEEFF41),
-    Color(0xFFFFAB40),
+private val saWeights = listOf(
+    2, 2, 2, 2, 2,
+    1, 1, 0, 0,
+    0, 0, 0, 0,
+    0, 0, 0,
+    0, 0, 0
+)
+
+private val colorsA = listOf(
+    Color(0xFF536DFE),
     Color(0xFF18FFFF),
-    Color(0xFFB2FF59))
+    Color(0xFF448AFF),
+    Color(0xFF64FFDA),
+    Color(0xFF40C4FF)
+)
+private val colorsB = listOf(
+    Color(0xFFFFFF00),
+    Color(0xFFFFAB40),
+    Color(0xFFFFD740),
+    Color(0xFFEEFF41)
+)
+private val colorsC = listOf(
+    Color(0xFFFF5252),
+    Color(0xFFFF4081),
+    Color(0xFFFF6052),
+    Color(0xFFFF6E40)
+)
+
 
 class NotenActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -77,10 +111,14 @@ class NotenActivity : ComponentActivity() {
 @Composable
 fun NotenContent(activity: ComponentActivity){
     val sharedPreferences = activity.getSharedPreferences("gradeAverages", Context.MODE_PRIVATE)
+    val editor = sharedPreferences.edit()
 
     var allAverage by remember {
         mutableStateOf(calculateAllAverage(loadAllAverages(sharedPreferences)))
     }
+    var showDeleteConfirmation by remember {
+        mutableStateOf(false)
+    }
 
     Scaffold(
         topBar = {
@@ -101,6 +139,16 @@ fun NotenContent(activity: ComponentActivity){
                         )
                     }
                 },
+                actions = {
+                    IconButton(onClick = { showDeleteConfirmation = true }) {
+                        Icon(
+                            imageVector = Icons.Outlined.Delete,
+                            contentDescription = null,
+                            modifier = Modifier.size(28.dp),
+                            tint = MaterialTheme.colorScheme.onPrimaryContainer
+                        )
+                    }
+                },
                 modifier = Modifier.fillMaxWidth()
             )
         },
@@ -126,31 +174,114 @@ fun NotenContent(activity: ComponentActivity){
             }
         }
     ) {innerPadding ->
-        Column(modifier = Modifier
-            .verticalScroll(rememberScrollState())
-            .padding(innerPadding))
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            modifier = Modifier
+                .verticalScroll(rememberScrollState())
+                .padding(innerPadding)
+        )
         {
-            subjects.forEach { name ->
+            GroopTitle("Hauptfächer", true)
+            for (i in 0..4){
                 FachButton(
-                    color = colors.random(),
-                    subject = name,
-                    saWeight = 2,
+                    color = colorsA[i],
+                    subject = subjects[i],
+                    saWeight = saWeights[i],
                     activity = activity,
                     sharedPreferences = sharedPreferences,
                     onAvgChange = { allAverage = calculateAllAverage(loadAllAverages(sharedPreferences)) }
                 )
             }
+
+            GroopTitle("Naturwissenschaften", false)
+            for (i in 5..8){
+                FachButton(
+                    color = colorsB[i - 5],
+                    subject = subjects[i],
+                    saWeight = saWeights[i],
+                    activity = activity,
+                    sharedPreferences = sharedPreferences,
+                    onAvgChange = { allAverage = calculateAllAverage(loadAllAverages(sharedPreferences)) }
+                )
+            }
+
+            GroopTitle("Gesellschaftswissenschaften", false)
+            for (i in 9..12){
+                FachButton(
+                    color = colorsC[i - 9],
+                    subject = subjects[i],
+                    saWeight = saWeights[i],
+                    activity = activity,
+                    sharedPreferences = sharedPreferences,
+                    onAvgChange = { allAverage = calculateAllAverage(loadAllAverages(sharedPreferences)) }
+                )
+            }
+
+            GroopTitle("Religionen", false)
+            for (i in 13..15){
+                FachButton(
+                    color = colorsA[i - 13],
+                    subject = subjects[i],
+                    saWeight = saWeights[i],
+                    activity = activity,
+                    sharedPreferences = sharedPreferences,
+                    onAvgChange = { allAverage = calculateAllAverage(loadAllAverages(sharedPreferences)) }
+                )
+            }
+
+            GroopTitle("Sonstiges", false)
+            for (i in 16..18){
+                FachButton(
+                    color = colorsB[i - 16],
+                    subject = subjects[i],
+                    saWeight = saWeights[i],
+                    activity = activity,
+                    sharedPreferences = sharedPreferences,
+                    onAvgChange = { allAverage = calculateAllAverage(loadAllAverages(sharedPreferences)) }
+                )
+            }
+
             Spacer(modifier = Modifier.height(16.dp))
         }
     }
+
+    if (showDeleteConfirmation){
+        AlertDialog(
+            onDismissRequest = { showDeleteConfirmation = false },
+            text = { Text(text = "Möchten Sie wirklich alle Noten aus Allen Fächern löschen?", color = MaterialTheme.colorScheme.onPrimaryContainer, style = MaterialTheme.typography.labelMedium) },
+            confirmButton = {
+                Row(modifier = Modifier.fillMaxWidth()){
+                    Text(
+                        text = "Bestätigen",
+                        color = MaterialTheme.colorScheme.secondary,
+                        style = MaterialTheme.typography.labelMedium,
+                        modifier = Modifier.clickable {
+                            deleteAll(editor, activity)
+                            showDeleteConfirmation = false
+                        }
+                    )
+
+                    Spacer(modifier = Modifier.weight(1f))
+
+                    Text(
+                        text = "Abbrechen",
+                        color = MaterialTheme.colorScheme.secondary,
+                        style = MaterialTheme.typography.labelMedium,
+                        modifier = Modifier.clickable { showDeleteConfirmation = false }
+                    )
+                }
+            },
+            containerColor = MaterialTheme.colorScheme.primaryContainer
+        )
+    }
 }
 
 @Composable
 fun FachButton(
     color : Color,
     subject : String,
-    saWeight: Int, activity :
-    ComponentActivity,
+    saWeight: Int,
+    activity: ComponentActivity,
     sharedPreferences: SharedPreferences,
     onAvgChange: () -> Unit){
     var avg by remember {
@@ -176,7 +307,7 @@ fun FachButton(
                 color = TextOnColouredButton,
                 style = MaterialTheme.typography.labelMedium)
             Spacer(modifier = Modifier.weight(1f))
-            Text(text = "Ø${formatFloat(avg)}",
+            Text(text = if (avg != 0.0f) "Ø${formatFloat(avg)}" else "---",
                 color = TextOnColouredButton,
                 style = MaterialTheme.typography.labelMedium)
         }
@@ -201,6 +332,17 @@ fun FachButton(
     }
 }
 
+@Composable
+fun GroopTitle(name: String, top: Boolean){
+    if(!top) {
+        Spacer(modifier = Modifier.height(32.dp))
+        Divider()
+    }
+    Spacer(modifier = Modifier.height(32.dp))
+    Text(text = name, style = MaterialTheme.typography.headlineSmall, color = MaterialTheme.colorScheme.onBackground)
+    Spacer(modifier = Modifier.height(12.dp))
+}
+
 fun calculateAllAverage(avgs: List<Float>): Float{
     var total = 0.0f
     var number = 0
@@ -223,3 +365,12 @@ fun loadAllAverages(sharedPreferences: SharedPreferences): List<Float>{
 
     return avgs
 }
+
+fun deleteAll(editor: Editor, context: Context){
+    subjects.forEach{name ->
+        editor.putFloat(name, 0.0f).apply()
+        CoroutineScope(Dispatchers.IO).launch {
+            GradeStoreManager.saveGrades(context, emptyList(), name)
+        }
+    }
+}