add fastapi init

chat/config.py

@@ -0,0 +1,12 @@
+import os
+
+# 数据库配置
+MYSQL_USER = os.getenv('DB_USER', 'root')
+MYSQL_PASSWORD = os.getenv('DB_PASSWORD', 'my-secret-pw')
+MYSQL_HOST = os.getenv('DB_HOST', 'localhost')
+MYSQL_PORT = os.getenv('DB_PORT', '3306')
+MYSQL_DB = os.getenv('DB_NAME', 'django_vue')
+
+SQLALCHEMY_DATABASE_URL = (
+    f"mysql+pymysql://{MYSQL_USER}:{MYSQL_PASSWORD}@{MYSQL_HOST}:{MYSQL_PORT}/{MYSQL_DB}?charset=utf8mb4"
+)