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{ Hono } from \"https://esm.sh/hono@3.11.7\";\nimport { authMiddleware } from \"./auth.ts\";\nimport { getChatMessages, createChatMessage } from \"../database/queries.ts\";\nimport { getUserById } from \"../database/queries.ts\";\nimport type { ApiResponse, ChatMessage } from \"../../shared/types.ts\";\n\nconst chat = new Hono();\n\n// Store active SSE connections\nconst connections = new Set();\n\n// Get chat messages\nchat.get(\"/messages\", async (c) => {\n try {\n const limit = parseInt(c.req.query(\"limit\") || \"50\");\n const messages = await getChatMessages(limit);\n\n return c.json>({\n success: true,\n data: messages\n });\n\n } catch (error) {\n console.error(\"Get chat messages error:\", error);\n return c.json({ \n success: false, \n error: \"Failed to fetch messages\" \n }, 500);\n }\n});\n\n// Send chat message (requires authentication)\nchat.post(\"/messages\", authMiddleware, async (c) => {\n try {\n const currentUser = c.get(\"user\");\n const { message } = await c.req.json();\n\n if (!message || message.trim().length === 0) {\n return c.json({ \n success: false, \n error: \"Message cannot be empty\" \n }, 400);\n }\n\n if (message.length > 1000) {\n return c.json({ \n success: false, \n error: \"Message too long (max 1000 characters)\" \n }, 400);\n }\n\n // Get user details for the message\n const user = await getUserById(currentUser.userId);\n if (!user) {\n return c.json({ \n success: false, \n error: \"User not found\" \n }, 404);\n }\n\n const chatMessage = await createChatMessage({\n user_id: currentUser.userId,\n user_name: user.name,\n message: message.trim()\n });\n\n // Broadcast to all connected clients\n broadcastMessage(chatMessage);\n\n return c.json>({\n success: true,\n data: chatMessage\n });\n\n } catch (error) {\n console.error(\"Send chat message error:\", error);\n return c.json({ \n success: false, \n error: \"Failed to send message\" \n }, 500);\n }\n});\n\n// Server-Sent Events stream for real-time chat\nchat.get(\"/stream\", (c) => {\n return new Response(\n new ReadableStream({\n start(controller) {\n // Add connection to active connections\n connections.add(controller);\n\n // Send initial connection message\n controller.enqueue(`data: ${JSON.stringify({ type: 'connected' })}\\n\\n`);\n\n // Handle client disconnect\n c.req.raw.signal?.addEventListener('abort', () => {\n connections.delete(controller);\n try {\n controller.close();\n } catch (e) {\n // Connection already closed\n }\n });\n },\n cancel() {\n connections.delete(controller);\n }\n }),\n {\n headers: {\n 'Content-Type': 'text/event-stream',\n 'Cache-Control': 'no-cache',\n 'Connection': 'keep-alive',\n 'Access-Control-Allow-Origin': '*',\n 'Access-Control-Allow-Headers': 'Cache-Control'\n }\n }\n );\n});\n\n// Broadcast message to all connected clients\nfunction broadcastMessage(message: ChatMessage) {\n const data = JSON.stringify({ type: 'message', data: message });\n const chunk = `data: ${data}\\n\\n`;\n\n // Send to all active connections\n for (const controller of connections) {\n try {\n controller.enqueue(chunk);\n } catch (error) {\n // Remove broken connections\n connections.delete(controller);\n }\n }\n}\n\n// Periodic cleanup of dead connections\nsetInterval(() => {\n const deadConnections = [];\n for (const controller of connections) {\n try {\n // Try to enqueue a heartbeat\n controller.enqueue(`data: ${JSON.stringify({ type: 'heartbeat' })}\\n\\n`);\n } catch (error) {\n deadConnections.push(controller);\n }\n }\n \n // Remove dead connections\n for (const controller of deadConnections) {\n connections.delete(controller);\n }\n}, 30000); // Every 30 seconds\n\nexport default chat;","deleted","label",[167,168,149],"backend","routes","permalink","https://www.val.town/x/Sandra_Ozumba/Freelancing/code/backend/routes/chat.ts","extension","actionData","errors"]