Add Docstring/Implement error handling/Safer query

Essential/FoodSearch.py

@@ -1,21 +1,50 @@
 import sqlite3
 import os.path
 
+# Static path
 current_dir = os.path.dirname(os.path.abspath(__file__))
 db_path = (current_dir + r"\data\food_data.db")
 
 class FoodSearch:
+    """
+    A class for searching food data in a SQLite database.
+
+    Methods:
+        search(user_input): Search for food data based on user input.
+
+    Usage:
+        food_search = FoodSearch()
+        results = food_search.search("apple")
+    """
+
     def __init__(self):
-        self.status = os.path.exists(db_path)
-        if self.status:
-            self.conn = sqlite3.connect(db_path)
-        else:
-            raise FileNotFoundError
-        self.cursor = self.conn.cursor()
+        if not os.path.exists(db_path):
+            raise FileNotFoundError("Database file not found.")
+
+        self.db_path = db_path
         
     def search(self, user_input) -> list:
-        query = f"SELECT * FROM food_data WHERE product_name LIKE '%{user_input}%'"
-        self.cursor.execute(query)
-        results = self.cursor.fetchall()
+        """
+        Search for food data based on the user's input.
 
-        return results
+        Parameters:
+            user_input (str): The input provided by the user to search for food data.
+
+        Returns:
+            list: A list of tuples representing the search results from the database.
+
+        Raises:
+            sqlite3.Error: If there is an error in executing the database query.
+        """
+
+        try:
+            with sqlite3.connect(self.db_path) as conn:
+                cursor = conn.cursor()
+                query = "SELECT * FROM food_data WHERE product_name LIKE ?"
+                cursor.execute(query, (f"%{user_input}%",))
+                results = cursor.fetchall()
+                return results
+        except sqlite3.Error as e:
+
+            print(f"Database error: {e}")
+            return []