a

Backend/utils/queries/guestbook.py

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+class GuestBookQueries:
+    CREATE_TABLE = """
+        CREATE TABLE IF NOT EXISTS guest_books (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            target_user_id INTEGER NOT NULL,
+            user_id INTEGER NOT NULL,
+            content TEXT NOT NULL,
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+            FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE
+        )
+    """
+
+    INSERT_GUEST_BOOK = """
+        INSERT INTO guest_books (target_user_id, user_id, content, created_at)
+        VALUES (?, ?, ?, ?)
+    """
+
+    SELECT_TARGET_USER_GUEST_BOOKS = """
+        SELECT * FROM guest_books 
+        WHERE target_user_id = ?
+        ORDER BY created_at DESC 
+        LIMIT ? OFFSET ?
+    """
+
+    SELECT_GUEST_BOOK_BY_ID = """
+        SELECT * FROM guest_books WHERE id = ?
+    """
+
+    SELECT_GUEST_BOOK_BY_USER_ID = """
+        SELECT * FROM guest_books WHERE user_id = ? ORDER BY created_at DESC LIMIT 1
+    """
+
+    UPDATE_GUEST_BOOK_BY_ID = """
+        UPDATE guest_books SET content = ?, updated_at=CURRENT_TIMESTAMP WHERE id = ?
+    """
+
+    DELETE_GUEST_BOOK = """
+        DELETE FROM guest_books WHERE id = ? AND user_id = ?
+    """