Improve error handling in ModrinthTracker API requests by adding session management and detailed logging for connection issues. Enhance user feedback for network errors and timeouts in the add command.

modrinthtracker/modrinthtracker.py

@@ -57,12 +57,29 @@ class ModrinthTracker(commands.Cog):
     async def _make_request(self, url, params=None):
         """Make a rate-limited request to the Modrinth API"""
         await self._rate_limit()
-        async with self.session.get(url, params=params) as response:
-            if response.status == 429:  # Too Many Requests
-                retry_after = int(response.headers.get('Retry-After', 60))
-                await asyncio.sleep(retry_after)
-                return await self._make_request(url, params)
-            return response
+        
+        # Ensure session is available
+        if self.session is None or self.session.closed:
+            self.session = aiohttp.ClientSession()
+            
+        try:
+            async with self.session.get(url, params=params) as response:
+                if response.status == 429:  # Too Many Requests
+                    retry_after = int(response.headers.get('Retry-After', 60))
+                    await asyncio.sleep(retry_after)
+                    return await self._make_request(url, params)
+                return response
+        except aiohttp.ClientConnectorError:
+            # Connection error, try to recreate session and retry once
+            if self.session and not self.session.closed:
+                await self.session.close()
+            self.session = aiohttp.ClientSession()
+            async with self.session.get(url, params=params) as response:
+                return response
+        except Exception as e:
+            # Log the error for debugging
+            self.bot.logger.error(f"Error in _make_request: {str(e)}", exc_info=True)
+            raise
 
     @commands.group()
     @checks.admin()
@@ -150,8 +167,15 @@ class ModrinthTracker(commands.Cog):
             else:
                 await channel.send("No version information is currently available for this project.")
 
+        except aiohttp.ClientConnectorError:
+            await ctx.send("Error: Failed to connect to Modrinth API. Please try again in a few moments.")
+        except aiohttp.ClientError as e:
+            await ctx.send(f"Error: Network error occurred while contacting Modrinth API: {str(e)}")
+        except asyncio.TimeoutError:
+            await ctx.send("Error: Request to Modrinth API timed out. Please try again.")
         except Exception as e:
-            await ctx.send(f"An error occurred while adding the project: {str(e)}")
+            self.bot.logger.error(f"Error in modrinth add command: {str(e)}", exc_info=True)
+            await ctx.send(f"An unexpected error occurred. Please try again later or contact the bot owner if the issue persists.")
 
     @modrinth.command()
     async def remove(self, ctx, project_id: str):