Merge branch '64-delete-cateogry-button-on-edit-screen' into 'main'

Resolve "delete-cateogry-button-on-edit-screen"

Closes #64

See merge request thschleicher/interaktive-systeme!55

app/(tabs)/(budget)/editCategory.tsx

@@ -2,7 +2,8 @@ import { router, useLocalSearchParams } from "expo-router";
 import { useState } from "react";
 import { SafeAreaView, StyleSheet, Text, TextInput, View } from "react-native";
 import { AutoDecimalInput, CustomColorPicker, NavigationButton, TypeSelectorSwitch } from "../../../components";
-import { updateCategory } from "../../../services/database";
+import useFetch from "../../../hooks/useFetch";
+import { deleteCategory, deleteExpense, updateCategory } from "../../../services/database";
 import { useTheme } from "../../contexts/ThemeContext";
 
 const addCategory = () => {
@@ -14,6 +15,8 @@ const addCategory = () => {
     const [selectedType, setSelectedType] = useState(category_type.toString());
     const [amount, setAmount] = useState(Number.parseFloat(category_amount.toString()));
 
+    const {data} = useFetch({sql: "SELECT * FROM expense WHERE category_guid = ?", args: [category_guid.toString()]});
+
     return (
         <SafeAreaView style={[styles.safeAreaViewStyle, {backgroundColor: colors.backgroundColor}]}>
             <Text style={[styles.headingTextStyle, {color: colors.primaryText}]}>Edit Category</Text>
@@ -44,13 +47,27 @@ const addCategory = () => {
                     }}/> 
                 </View>
 
+                <View style={styles.deleteButtonView}>
+                    <NavigationButton text={"Delete Cateogry"} onPress={() => {
+                        for (let i = 0; i < data.length;) {
+                            deleteExpense(data[i].guid).then(() => {
+                                i++
+                            });
+                        } 
+                        deleteCategory(category_guid.toString()).then(() => {
+                           router.push("/(tabs)/(budget)"); 
+                        }); 
+                    }}/>
+                </View>
+
                 <View style={styles.navigationButtonViewStyle}>
                     <NavigationButton text="Back" onPress={() => {
                         router.back();
                     }}/>
                     <NavigationButton text="Save" onPress={() => {
-                        updateCategory(category_guid.toString(), categoryName, categoryColor, selectedType, amount);
+                        updateCategory(category_guid.toString(), categoryName, categoryColor, selectedType, amount).then(() => {
                             router.back();
+                        });
                     }}/> 
                 </View>
             </View>
@@ -61,6 +78,9 @@ const addCategory = () => {
 export default addCategory;
 
 const styles = StyleSheet.create({
+    deleteButtonView: {
+
+    },
     containerStyle: {
         flex: 1,
         margin: 10,