add .gitignore and aet env for HF

.env

@@ -1,4 +1,4 @@
 LLM_PROVIDER=groq
-SUPABASE_URL=https://YOUR.supabase.co
-SUPABASE_SERVICE_KEY=your-supabase-service-key
+SUPABASE_URL=https://omwpqmtzmybojocamzvn.supabase.co
+SUPABASE_SERVICE_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Im9td3BxbXR6bXlib2pvY2FtenZuIiwicm9sZSI6InNlcnZpY2Vfcm9sZSIsImlhdCI6MTc0NzU2MjMwOSwiZXhwIjoyMDYzMTM4MzA5fQ.OuvoIHTPW0PR1TWLDvSdSjGrIGM-cbyRZi1uJSH-T6A
 SYSTEM_PROMPT_PATH=system_prompt.txt

.gitignore

@@ -0,0 +1,115 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual environments
+venv/
+ENV/
+env/
+.env
+.venv
+env.bak/
+venv.bak/
+.python-version
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+pytest-*.xml
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# Logs
+*.log
+logs/
+log/
+
+# IDE specific files
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.DS_Store
+.project
+.pydevproject
+.settings/
+.vs/
+*.sublime-project
+*.sublime-workspace
+
+# Database
+*.db
+*.rdb
+*.sqlite
+*.sqlite3
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# macOS specific
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+._*
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# AI/model files
+*.h5
+*.pb
+*.onnx
+*.tflite
+*.pt
+*.pth
+*.weights
+
+# Temporary files
+tmp/
+temp/
+.tmp
+*.tmp

retrievers/custom_retriever.py

@@ -1,21 +1,35 @@
+# retrievers/custom_retriever.py
+
 import os
 from langchain_huggingface import HuggingFaceEmbeddings
 from langchain_community.vectorstores import SupabaseVectorStore
 from supabase.client import create_client
 from config import settings
 
-embeddings = HuggingFaceEmbeddings(model_name="sentence-transformers/all-mpnet-base-v2")
-supabase = create_client(settings.supabase_url, settings.supabase_key)
-vector_store = SupabaseVectorStore(
-    client=supabase,
-    embedding=embeddings,
-    table_name="documents",
-    query_name="match_documents_langchain",
-)
+def get_vector_store():
+    # Read env variables only when needed
+    supabase_url = settings.supabase_url
+    supabase_key = settings.supabase_key
+
+    if not supabase_url or not supabase_key:
+        raise ValueError("SUPABASE_URL and SUPABASE_SERVICE_KEY must be set in your environment or .env file.")
+    
+    embeddings = HuggingFaceEmbeddings(model_name="sentence-transformers/all-mpnet-base-v2")
+    supabase = create_client(supabase_url, supabase_key)
+    return SupabaseVectorStore(
+        client=supabase,
+        embedding=embeddings,
+        table_name="documents",
+        query_name="match_documents_langchain",
+    )
 
 def retrieve(query: str) -> str:
-    results = vector_store.similarity_search(query)
-    if results:
-        return results[0].page_content
-    else:
-        return "No similar questions found."
+    try:
+        vector_store = get_vector_store()
+        results = vector_store.similarity_search(query)
+        if results:
+            return results[0].page_content
+    except Exception as e:
+        return f"Retriever is not available (reason: {e})"
+    return "No similar questions found."
+