update requierements.txt, add of db connection function and root

.env

@@ -0,0 +1,4 @@
+DB_USER="portfolio_user"
+DB_PASS="USER@gio53"
+DB_HOST="localhost"
+DB_NAME="portfolio"

main.py

@@ -1,21 +1,42 @@
-from fastapi import FastAPI 
-import mariadb 
+import os
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+import MySQLdb
+from dotenv import load_dotenv
+
+load_dotenv()
+
 app = FastAPI()
 
-@app.get("/api/portfolio") 
-def read_portfolio(): 
+origins = [
+    "http://localhost",
+    "http://localhost:5173",
+]
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+def get_db_connection():
     try:
-        conn = mariadb.connect( 
-            user="root", 
-            password="motdepasse", 
-            host="localhost", 
-            port=3306, 
-            database="portfolio"
+        conn = MySQLdb.connect(
+            user=os.getenv("DB_USER"),
+            passwd=os.getenv("DB_PASS"),
+            host=os.getenv("DB_HOST"),
+            db=os.getenv("DB_NAME"),
+            charset='utf8mb4',
+            cursorclass=MySQLdb.cursors.DictCursor 
         )
-        cursor = conn.cursor() 
-        cursor.execute("SELECT * FROM portfolio;") 
-        result = cursor.fetchall() 
-        conn.close() 
-        return {"data": result} 
-    except mariadb.Error as e: 
-        return {"error": str(e)}
+        return conn
+    except MySQLdb.Error as e:
+        print(f"Erreur de connexion à la base de données : {e}")
+        raise HTTPException(status_code=500, detail="Erreur interne du serveur lors de la connexion à la base de données.")
+
+
+@app.get("/")
+def read_root():
+    return {"status": "API Portfolio fonctionnelle"}

requirements.txt

@@ -1,3 +1,4 @@
 fastapi 
 uvicorn 
-mariadb
+mysqlclient
+python-dotenv