Val Town Basic Chat

Val Town Chat Room

\n \n

\n\n \n

Welcome to the Chat!

Please enter your desired User ID (Name):

\n \n \n

\n\n \n\n\n`;\n return new Response(html, {\n headers: {\n \"Content-Type\": \"text/html; charset=utf-8\",\n },\n });\n}\n\n// --- Main HTTP Handler ---\n\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n\n // Standard CORS headers for API use (required for POST requests from the client JS)\n const headers = {\n \"Content-Type\": \"application/json\",\n \"Access-Control-Allow-Origin\": \"*\",\n \"Access-Control-Allow-Methods\": \"GET, POST, OPTIONS\",\n \"Access-Control-Allow-Headers\": \"Content-Type\",\n };\n\n // Handle CORS preflight requests\n if (req.method === \"OPTIONS\") {\n return new Response(null, { status: 204, headers });\n }\n\n // 1. Handle UI Request (GET without the 'since' query parameter)\n if (req.method === \"GET\" && !url.searchParams.has(\"since\")) {\n return generateUI();\n }\n\n // If we reach here, it's an API call (POST or GET with 'since')\n let state: ChatState;\n\n try {\n state = await getChatState();\n } catch (e) {\n console.error(\"Error retrieving state:\", e);\n return Response.json({ error: \"Failed to load chat state\" }, {\n status: 500,\n headers,\n });\n }\n\n // 2. Handle Sending Messages (POST)\n if (req.method === \"POST\") {\n try {\n const body = await req.json();\n let { user_id, message } = body;\n\n // Basic validation and sanitization\n if (\n !user_id || typeof user_id !== \"string\" || user_id.trim().length === 0\n ) {\n return Response.json({ error: \"Missing or invalid user_id\" }, {\n status: 400,\n headers,\n });\n }\n if (\n !message || typeof message !== \"string\" || message.trim().length === 0\n ) {\n return Response.json({ error: \"Missing or invalid message content\" }, {\n status: 400,\n headers,\n });\n }\n\n const content = message.trim().substring(0, 500);\n const user = user_id.trim().substring(0, 50);\n\n const newMessage: ChatMessage = {\n id: state.nextId,\n user: user,\n content: content,\n timestamp: Date.now(),\n };\n\n // Update state\n state.messages.push(newMessage);\n state.nextId += 1;\n\n // Save state\n await setChatState(state);\n\n return Response.json({\n ok: true,\n id: newMessage.id,\n }, { headers });\n } catch (e) {\n console.error(\"Error processing POST request:\", e);\n return Response.json({ error: \"Failed to send message: \" + e.message }, {\n status: 500,\n headers,\n });\n }\n }\n\n // 3. Handle Receiving Messages (GET with 'since')\n if (req.method === \"GET\") {\n try {\n const sinceIdParam = url.searchParams.get(\"since\");\n let sinceId = 0;\n\n if (sinceIdParam) {\n sinceId = parseInt(sinceIdParam, 10);\n if (isNaN(sinceId) || sinceId < 0) {\n return Response.json({\n error: \"Invalid 'since' parameter. Must be a non-negative integer.\",\n }, { status: 400, headers });\n }\n }\n\n // Filter messages based on the 'since' parameter\n const messages = state.messages.filter((msg) => msg.id > sinceId);\n\n // The current max ID is always the previous ID (nextId - 1)\n const currentMaxId = state.nextId - 1;\n\n return Response.json({\n ok: true,\n messages: messages,\n current_max_id: currentMaxId,\n }, { headers });\n } catch (e) {\n console.error(\"Error processing GET request:\", e);\n return Response.json({ error: \"Internal server error\" }, {\n status: 500,\n headers,\n });\n }\n }\n\n // 4. Default / Error\n return Response.json({ error: \"Method not supported.\" }, {\n status: 405,\n headers,\n });\n}","deleted","label","children",[],[154],"files",[152],"counts",{"_175":32,"_176":177,"_178":32,"_179":180},"pulls","branches",1,"forks","envVars",{"_181":32,"_182":32},"count","emptyCount","contents",[185],{"_103":153,"_96":154,"_155":115,"_156":-5,"_157":140,"_158":139,"_159":117,"_105":186,"_100":161,"_162":163,"_164":165,"_166":22,"_167":-5,"_99":187},["D",1759938008783],[154],"file","upstreamProject","upstreamBranch","emptyEnvVars","isNew","flags",[],"routes/_app.x.$handle.$name._index",{"_94":95,"_96":97,"_98":-7,"_100":-7,"_101":197,"_183":202,"_205":-7,"_206":-5,"_207":-5,"_171":208,"_212":209,"_213":-5,"_214":-5,"_215":22,"_216":22},{"_103":104,"_96":97,"_105":198,"_107":-5,"_108":22,"_109":110,"_111":-5,"_112":-5,"_14":113,"_114":115,"_116":117,"_118":117,"_119":-5,"_120":32,"_16":121,"_122":123,"_124":123,"_125":126,"_127":126,"_128":126,"_129":123,"_130":123,"_23":199,"_134":200,"_137":201,"_149":22},["D",1759937822156],{"_94":95,"_132":133},{"_94":95,"_136":133,"_14":113},{"_100":139,"_96":44,"_103":140,"_141":104,"_142":-5,"_143":-5,"_144":-5,"_145":-5,"_146":-5,"_147":97,"_148":95},[203],{"_103":153,"_96":154,"_155":115,"_156":-5,"_157":140,"_158":139,"_159":117,"_105":186,"_100":161,"_162":163,"_164":165,"_166":22,"_167":-5,"_99":204},[154],"readme","upstream","pull",[209],{"_103":153,"_96":154,"_155":115,"_156":-5,"_157":140,"_158":139,"_159":117,"_105":160,"_100":161,"_162":163,"_164":165,"_166":22,"_167":-5,"_168":210,"_99":211},[],[154],"preview","ahead","behind","showHomeCustomizationHint","showHTTPPreviewSettingsHint","actionData","errors"]

want

untitled-423