feat: support dify in rag module (#550)

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

src/config/configuration.py

@@ -8,9 +8,9 @@ from typing import Any, Optional
 
 from langchain_core.runnables import RunnableConfig
 
+from src.config.loader import get_bool_env, get_int_env, get_str_env
 from src.config.report_style import ReportStyle
 from src.rag.retriever import Resource
-from src.config.loader import get_str_env, get_int_env, get_bool_env
 
 logger = logging.getLogger(__name__)
 

src/config/tools.py

@@ -22,6 +22,7 @@ SELECTED_SEARCH_ENGINE = os.getenv("SEARCH_API", SearchEngine.TAVILY.value)
 
 
 class RAGProvider(enum.Enum):
+    DIFY = "dify"
     RAGFLOW = "ragflow"
     VIKINGDB_KNOWLEDGE_BASE = "vikingdb_knowledge_base"
     MOI = "moi"