Update app.py

app.py

@@ -1,8 +1,48 @@
+import json
+from pathlib import Path
+
+import pandas as pd
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
+
 
 app = FastAPI()
 
+origins = [
+    "https://pro.openbb.dev",
+    "https://pro.openbb.co",
+    "https://excel.openbb.co",
+    "https://excel.openbb.dev",
+]
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+ROOT_PATH = Path(__file__).parent.resolve()
+
 @app.get("/")
-def greet_json():
-    return {"Hello": "World!"}
+def read_root():
+    return {"Info": "Full example for OpenBB Custom Backend"}
+
+
+@app.get("/csv-data")
+def csv_data():
+    """Read mock csv data and return it as a table to your widget"""
+    # Specify the path to your CSV file
+    csv_file_path = "mock_data.csv"
+
+    try:
+        # Convert the DataFrame to a dictionary and return the data
+        return pd.read_csv((ROOT_PATH / csv_file_path).open()).to_dict(orient="records")
+    except Exception as e:
+        # Handle error cases here
+        error_message = f"Error reading the CSV file: {str(e)}"
+        return JSONResponse(content={"error": error_message}, status_code=500)