import sqlite3
conn = sqlite3.connect('it_smart_desk.db')
cursor = conn.cursor()

# Employee 表新增字段
alterations = [
    ("it_level", "VARCHAR(20)", "'silver'"),
    ("it_level_source", "VARCHAR(20)", "'system'"),
    ("notes", "JSON", "'{}'"),
]

for col_name, col_type, default_val in alterations:
    try:
        cursor.execute(f"ALTER TABLE employees ADD COLUMN {col_name} {col_type} NOT NULL DEFAULT {default_val}")
        print(f"ADDED: employees.{col_name}")
    except sqlite3.OperationalError as e:
        if "duplicate column" in str(e).lower():
            print(f"SKIP: employees.{col_name} already exists")
        else:
            print(f"ERROR: employees.{col_name} — {e}")

conn.commit()
conn.close()
print("Done.")