sample extract code

Author: brown9804

src/function_app.py

@@ -0,0 +1,125 @@
+import azure.functions as func
+import logging
+import json
+import os
+import uuid
+import io
+from pdfminer.high_level import extract_text
+from azure.cosmos import CosmosClient, PartitionKey
+
+app = func.FunctionApp(http_auth_level=func.AuthLevel.FUNCTION)
+
+def read_pdf_content(myblob):
+    # Read the blob content into a BytesIO stream
+    blob_bytes = myblob.read()
+    pdf_stream = io.BytesIO(blob_bytes)
+    
+    # Extract text from the PDF stream
+    text = extract_text(pdf_stream)
+    return text
+
+def extract_invoice_data(text):
+    lines = text.split('\n')
+    invoice_data = {
+        "id": generate_id(),
+        "customer_name": "",
+        "customer_email": "",
+        "customer_address": "",
+        "company_name": "",
+        "company_phone": "",
+        "company_address": "",
+        "rentals": []
+    }
+
+    for i, line in enumerate(lines):
+        if "BILL TO:" in line:
+            invoice_data["customer_name"] = lines[i + 1].strip()
+            invoice_data["customer_email"] = lines[i + 2].strip()
+            invoice_data["customer_address"] = lines[i + 3].strip()
+        elif "Company Information:" in line:
+            invoice_data["company_name"] = lines[i + 1].strip()
+            invoice_data["company_phone"] = lines[i + 2].strip()
+            invoice_data["company_address"] = lines[i + 3].strip()
+        elif "Rental Date" in line:
+            for j in range(i + 1, len(lines)):
+                if lines[j].strip() == "":
+                    break
+                rental_details = lines[j].split()
+                rental_date = rental_details[0]
+                title = " ".join(rental_details[1:-3])
+                description = rental_details[-3]
+                quantity = rental_details[-2]
+                total_price = rental_details[-1]
+                invoice_data["rentals"].append({
+                    "rental_date": rental_date,
+                    "title": title,
+                    "description": description,
+                    "quantity": quantity,
+                    "total_price": total_price
+                })
+
+    logging.info("Successfully extracted invoice data.")
+    return invoice_data
+
+def save_invoice_data_to_cosmos(invoice_data, blob_name):
+    try:
+        endpoint = os.getenv("COSMOS_DB_ENDPOINT")
+        key = os.getenv("COSMOS_DB_KEY")
+        client = CosmosClient(endpoint, key)
+        logging.info("Successfully connected to Cosmos DB.")
+    except Exception as e:
+        logging.error(f"Error connecting to Cosmos DB: {e}")
+        return
+    
+    database_name = 'ContosoDBAIDemo'
+    container_name = 'Invoices'
+    
+    try:
+        database = client.create_database_if_not_exists(id=database_name)
+        container = database.create_container_if_not_exists(
+            id=container_name,
+            partition_key=PartitionKey(path="/invoice_number"),
+            offer_throughput=400
+        )
+        logging.info("Successfully ensured database and container exist.")
+    except Exception as e:
+        logging.error(f"Error creating database or container: {e}")
+        return
+    
+    try:
+        response = container.upsert_item(invoice_data)
+        logging.info(f"Saved processed invoice data to Cosmos DB: {response}")
+    except Exception as e:
+        logging.error(f"Error inserting item into Cosmos DB: {e}")
+
+def generate_id():
+    return str(uuid.uuid4())
+
+@app.blob_trigger(arg_name="myblob", path="pdfinvoices/{name}",
+                  connection="contosostorageaidemo_STORAGE")
+def BlobTriggerContosoPDFInvoicesRaw(myblob: func.InputStream):
+    logging.info(f"Python blob trigger function processed blob\n"
+                 f"Name: {myblob.name}\n"
+                 f"Blob Size: {myblob.length} bytes")
+
+    try:
+        text = read_pdf_content(myblob)
+        logging.info("Successfully read and extracted text from PDF.")
+    except Exception as e:
+        logging.error(f"Error reading PDF: {e}")
+        return
+
+    logging.info(f"Extracted text from PDF: {text}")
+
+    try:
+        invoice_data = extract_invoice_data(text)
+        logging.info(f"Extracted invoice data: {invoice_data}")
+    except Exception as e:
+        logging.error(f"Error extracting invoice data: {e}")
+        return
+
+    try:
+        save_invoice_data_to_cosmos(invoice_data, myblob.name)
+        logging.info("Successfully saved invoice data to Cosmos DB.")
+    except Exception as e:
+        logging.error(f"Error saving invoice data to Cosmos DB: {e}")