feat: add script to seed employee data from CSV into database

scripts/insert_data.py

@@ -0,0 +1,47 @@
+import sys
+import os
+
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from dotenv import load_dotenv
+load_dotenv()
+
+import pandas as pd
+from app.db.session import SessionLocal
+from app.db.models import Employee
+from typing import cast, Any
+
+
+CSV_PATH = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "data", "dataset.csv")
+
+BOOL_MAP = {"Oui": True, "Non": False}
+
+
+def insert_employees():
+    session = SessionLocal()
+    try:
+        existing = session.query(Employee).count()
+        if existing > 0:
+            print(f"Table déjà peuplée ({existing} lignes). Abandon.")
+            return
+
+        df = pd.read_csv(CSV_PATH)
+        df["a_quitte_l_entreprise"] = df["a_quitte_l_entreprise"].map(BOOL_MAP)
+
+        records = cast(list[dict[str, Any]], df.to_dict(orient="records"))
+        session.bulk_insert_mappings(Employee.__mapper__, records)
+        session.commit()
+
+        count = session.query(Employee).count()
+        print(f"Insertion terminée : {count} employés en base.")
+
+    except Exception as e:
+        session.rollback()
+        print(f"Erreur : {e}")
+        raise
+    finally:
+        session.close()
+
+
+if __name__ == "__main__":
+    insert_employees()