Resolve "datenbank schmiert ab wenn schnell 20~ einträge eingetragen werden"

hooks/useFetch.ts

@@ -0,0 +1,29 @@
+import { useEffect, useState } from "react";
+import { executeQuery } from "../services/database";
+
+const useFetch = () => {
+
+    const [isLoading, setIsLoading] = useState(false);
+    const [data, setData] = useState<{[column: string]: any;}[]>([]);
+
+    const reFetch = () => {
+        setIsLoading(true);
+        executeQuery("SELECT e.guid AS expense_guid, c.guid AS category_guid, e.name AS expense_name, c.name AS category_name, e.datetime AS expense_datetime, e.amount AS expense_amount, c.color AS category_color, c.type AS category_type FROM expense e JOIN category c ON e.category_guid = c.guid;").then((result) => {
+            if("rows" in result[0]) {
+                setData(result[0]["rows"]);
+            }
+        }).catch((error: any) => {
+            console.error("Fetching data from database has failed: ", error);
+        }).finally(() => {
+            setIsLoading(false);
+        });
+    }
+
+    useEffect(() => {
+        reFetch();
+    }, [])
+
+    return {data, isLoading, reFetch};
+}
+
+export default useFetch;

hooks/useThemeColor.ts

@@ -1,7 +1,11 @@
 import { useColorScheme } from "react-native";
-import colors from "../constants/colors"
+import colors from "../constants/colors";
 
 export function useThemeColor(colorName: keyof typeof colors.light & keyof typeof colors.dark): string {
     const theme = useColorScheme() ?? "light";
     return colors[theme][colorName];
+}
+
+export function useUpdateData() {
+    
 }