Implemented logging configuration

app/main.py

@@ -1,20 +1,29 @@
 from fastapi import FastAPI, HTTPException
 from fastapi.responses import RedirectResponse
+from contextlib import asynccontextmanager
 from pydantic import BaseModel
 from app.utils import generate_short_code
 from dotenv import load_dotenv
 import os
 import sqlite3
-from contextlib import asynccontextmanager
+import logging
 
+# Set up logging configuration
+logging.basicConfig(level=logging.INFO,
+                    format="%(asctime)s - %(levelname)s - %(message)s")
+logger = logging.getLogger(__name__)
+
+# Database connection setup
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     conn = sqlite3.connect('urls.db')
     conn.execute('''CREATE TABLE IF NOT EXISTS urls
                     (id INTEGER PRIMARY KEY, short_code TEXT, original_url TEXT, clicks INTEGER)''')
     conn.commit()
+    logger.info("Database initialized or already exists.")
     yield
     conn.close()
+    logger.info("Database connection closed.")
 
 app = FastAPI(lifespan=lifespan)
 
@@ -27,10 +36,12 @@ class URLRequest(BaseModel):
 
 @app.get("/")
 def home():
+    logger.info("Home endpoint accessed.")
     return {"message": "URL Shortener API"}
 
 @app.post("/shorten")
 def shorten_url(request: URLRequest):
+    logger.info(f"Request received to shorten URL: {request.url}")
     short_code = generate_short_code()
     conn = get_db_connection()
 
@@ -42,14 +53,18 @@ def shorten_url(request: URLRequest):
     conn.commit()
     conn.close()
 
-    return {"short_url": f"{os.getenv('BASE_URL', 'http://localhost:8000')}/{short_code}"}
+    short_url = f"{os.getenv('BASE_URL', 'http://localhost:8000')}/{short_code}"
+    logger.info(f"Shortened URL created: {short_url}")
+    return {"short_url": short_url}
 
 @app.get("/{short_code}")
 def redirect_to_url(short_code: str):
+    logger.info(f"Redirect request received for short_code: {short_code}")
     conn = get_db_connection()
     url_data = conn.execute("SELECT original_url, clicks FROM urls WHERE short_code = ?", (short_code,)).fetchone()
 
     if url_data is None:
+        logger.warning(f"Shortened URL for {short_code} not found.")
         raise HTTPException(status_code=404, detail="Shortened URL not found")
 
     original_url, clicks = url_data
@@ -57,4 +72,5 @@ def redirect_to_url(short_code: str):
     conn.commit()
     conn.close()
 
+    logger.info(f"Redirecting to {original_url}. Total clicks: {clicks + 1}")
     return RedirectResponse(url=original_url)