Nexus AI

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_269":270,"_271":272},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_199":-5,"_20":200,"_22":201,"_202":203,"_204":205,"_26":206,"_24":207,"_208":209,"_210":211,"_212":50,"_213":214,"_215":66,"_216":-5,"_217":-5,"_218":219},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27,"_28":29,"_30":-5,"_31":32,"_33":34,"_35":-5},"handle","Shinnzicco","name","nexus-ai-chat-v2","branchName","main","version","path","index.ts","project",{"_36":155,"_13":14,"_38":156,"_48":-5,"_157":50,"_51":52,"_158":52,"_159":160,"_161":-5,"_162":163,"_164":60,"_165":66,"_166":-5,"_167":-5,"_168":34,"_54":55,"_169":-5,"_170":-5,"_171":-5,"_172":-5,"_173":174,"_175":174,"_176":177,"_178":177,"_179":177,"_180":174,"_181":174,"_182":183,"_184":185,"_186":187,"_49":50},"tree",[76,77,78,79],"file",{"_36":58,"_13":19,"_59":60,"_61":-5,"_62":63,"_64":32,"_65":66,"_38":67,"_17":68,"_69":70,"_71":72,"_73":50,"_74":-5,"_18":75},"contents",[],"upstream",{"_36":37,"_38":39,"_40":41,"_13":16,"_42":43,"_17":32,"_44":-5,"_45":-5,"_46":47,"_48":-5,"_49":50,"_51":52,"_53":12,"_54":55,"_56":57},"pull","ahead",3,"behind",0,"envVars","id","e79f0355-9471-4050-ab62-766b8a59a46b","createdAt",["D",1788499439663],"updatedAt",["D",1788499456555],"projectId","c32632df-a90a-4dc1-8300-eefbf9177893","forkedBranchId","forkedBranchVersion","lockfileKey","1788499456621-esm.town_v_Shinnzicco_nexus-ai-chat@3-main","deletedAt","isOwned",false,"privacy","public","userHandle","orgId","01a06aba-e253-7656-932f-ae0ebf784a8c","projectName","nexus-ai-chat","5b2f88ea-4baf-4df3-9528-5578791d3ae6","fileId","01a06ae2-7f87-7027-8a5e-10b147f90474","parentId","branchId","0907ac60-516d-4316-b248-129ff01bacc4","branchVersion","latest",true,["D",1788500255461],2,"fileType","http","content","import { Hono } from \"npm:hono\";\nimport Stripe from \"npm:stripe\";\nimport { serveFile, immutableFileUrl, serveImmutableFile, parseVal } from \"https://esm.town/v/std/utils/index.ts\";\n\nconst app = new Hono();\n\napp.get(\"/\", (c) => c.html(`Nexus AI

`));\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\napp.get(\"/frontend/*\", (c) => serveFile(c.req.path));\n\napp.post(\"/api/chat\", async (c) => {\n const body = await c.req.json().catch(() => ({}));\n const message = String(body.message ?? \"\").trim();\n if (!message) return c.json({ error: \"Message required\" }, 400);\n const key = Deno.env.get(\"OPENAI_API_KEY\");\n if (!key) return c.json({ reply: \"Nexus AI is ready, but OPENAI_API_KEY has not been configured yet.\" });\n const r = await fetch(\"https://api.openai.com/v1/responses\", { method: \"POST\", headers: { \"Content-Type\": \"application/json\", Authorization: `Bearer ${key}` }, body: JSON.stringify({ model: \"gpt-5-mini\", input: message }) });\n if (!r.ok) return c.json({ error: \"AI provider error\" }, 502);\n const data = await r.json();\n const reply = data.output_text ?? data.output?.flatMap((x:any)=>x.content??[]).map((x:any)=>x.text??\"\").join(\"\") ?? \"No response.\";\n return c.json({ reply });\n});\n\napp.get(\"/api/plans\", (c) => c.json({ plans: [\n { id: \"monthly\", name: \"Monthly Membership\", price: \"RM 19.90/month\", priceIdConfigured: Boolean(Deno.env.get(\"STRIPE_MONTHLY_PRICE_ID\")) },\n { id: \"annual\", name: \"Annual Membership\", price: \"RM 199/year\", priceIdConfigured: Boolean(Deno.env.get(\"STRIPE_ANNUAL_PRICE_ID\")) }\n] }));\n\napp.post(\"/api/create-checkout-session\", async (c) => {\n const secret = Deno.env.get(\"STRIPE_SECRET_KEY\");\n if (!secret) return c.json({ error: \"Stripe is not configured. Add STRIPE_SECRET_KEY and the Stripe Price IDs to this Val.\" }, 503);\n const body = await c.req.json().catch(() => ({}));\n const plan = body.plan === \"annual\" ? \"annual\" : \"monthly\";\n const priceId = plan === \"annual\" ? Deno.env.get(\"STRIPE_ANNUAL_PRICE_ID\") : Deno.env.get(\"STRIPE_MONTHLY_PRICE_ID\");\n if (!priceId) return c.json({ error: `Stripe ${plan} Price ID is not configured.` }, 503);\n const stripe = new Stripe(secret);\n const origin = new URL(c.req.url).origin;\n const session = await stripe.checkout.sessions.create({\n mode: \"subscription\",\n line_items: [{ price: priceId, quantity: 1 }],\n success_url: `${origin}/?subscription=success`,\n cancel_url: `${origin}/?subscription=cancelled`,\n allow_promotion_codes: true,\n });\n return c.json({ url: session.url });\n});\n\nexport default app.fetch;\n","deleted","label",[19],{"_36":99,"_13":100,"_59":101,"_61":-5,"_62":63,"_64":87,"_65":66,"_38":102,"_17":34,"_69":103,"_71":-5,"_73":50,"_74":-5,"_81":104,"_18":105},{"_36":92,"_13":93,"_59":94,"_61":-5,"_62":63,"_64":87,"_65":66,"_38":95,"_17":34,"_69":24,"_71":96,"_73":50,"_74":-5,"_81":97,"_18":98},{"_36":84,"_13":85,"_59":86,"_61":-5,"_62":63,"_64":87,"_65":66,"_38":88,"_17":34,"_69":24,"_71":89,"_73":50,"_74":-5,"_81":90,"_18":91},{"_36":58,"_13":19,"_59":60,"_61":-5,"_62":63,"_64":32,"_65":66,"_38":80,"_17":68,"_69":70,"_71":72,"_73":50,"_74":-5,"_81":82,"_18":83},["D",1788500255461],"children",[],[19],"4cc6d88d-aa92-448e-b7a5-4ae8f4c0f146","README.md","01a06ae2-7f87-7027-8a5e-0f8b21b8ae3c",1,["D",1788499623693],"# React + Hono Starter\n\nA minimal starter template for building client-side React apps with a Hono\nbackend on Val Town. Click **Remix** to get your own copy.\n\n## Picking a starter\n\n| Starter | When to pick it |\n| --- | --- |\n| [`basic-html-starter`](https://www.val.town/x/templates/basic-html-starter) | Static HTML pages. Sprinkle of vanilla JS. No server-side rendering. |\n| [`hono-jsx-starter`](https://www.val.town/x/templates/hono-jsx-starter) | Dynamic server-rendered HTML with JSX. API routes. No React, no SPA. |\n| **[`react-hono-starter`](https://www.val.town/x/templates/react-hono-starter)** *(you're here)* | Client-side React SPA with a Hono API backend. |\n\n**Want to build UI?** Start writing React components in\n[`frontend/components/`](/frontend/components/). Import them into `App.tsx` and\nyou're good to go. Styling is [Twind](https://twind.style/) — just use Tailwind\nutility classes, zero config.\n\n**Want to add an API?** Add routes in [`index.ts`](/index.ts) (there's a\ncommented-out example). Fetch them from your React components.\n\n## Architecture\n\n```mermaid\ngraph LR\n Browser -->|\"GET /\"| Hono[\"index.ts
(Hono server)\"]\n Hono -->|serves| HTML[\"root.tsx\"]\n HTML -->|loads| Entry[\"index.tsx\"]\n Entry -->|renders| App[\"App.tsx\"]\n App -->|renders| Counter[\"Counter.tsx\"]\n```\n\n## File structure\n\n```\nindex.ts ← Hono backend (serves frontend + API routes)\nfrontend/\n root.tsx ← HTML shell (stamps immutable asset URLs)\n index.tsx ← React entrypoint (mounts )\n favicon.svg ← App icon\n components/\n App.tsx ← Root component (layout + view source link)\n Counter.tsx ← Example component with state\n```\n\n## How it works\n\n1. **`index.ts`** is the HTTP entrypoint — a Hono server that serves the\n frontend and any API routes you add.\n2. **`frontend/root.tsx`** is the HTML shell — it loads Twind and stamps\n immutable asset URLs for the favicon and React entrypoint.\n3. **`frontend/index.tsx`** mounts the React app.\n4. **`frontend/components/App.tsx`** is the root layout — add new components\n alongside it.\n5. **`frontend/components/Counter.tsx`** is an example stateful component —\n replace it with your own!\n\n## Next steps\n\n- Add API routes in `index.ts`\n- Add new components in `frontend/components/`\n- Add a SQLite database — see the\n [React Hono Example](https://www.val.town/x/stevekrouse/reactHonoExample) for\n a full-stack example with database, queries, and shared types\n\nTemplate updates and upgrade paths for existing remixes: [CHANGELOG.md](/CHANGELOG.md)\n",[],[85],"07fb37d3-eb74-4adc-90a7-d25b49ca3df3","CHANGELOG.md","01a06ae2-7f87-7027-8a5e-082d3961a727",["D",1788499623693],"# Changelog\n\n## 2026-07-30 — Immutable asset caching\n\nFrontend files are now served at version-addressed URLs\n(`/__immutable/45/frontend/index.tsx`) with\n`Cache-Control: public, max-age=31536000, immutable`, so repeat visits load the\nwhole client graph from the browser cache — roughly 3× faster (~665ms → ~157ms\nmeasured). Publishing your val bumps its version, which changes every URL, so\ncaches invalidate automatically. Old-version URLs return 404 after a publish\n(like Next.js build assets); a reload picks up the new version.\n\nWhat changed in the template:\n\n- `frontend/index.html` → [`frontend/root.tsx`](/frontend/root.tsx): the HTML\n shell is now JSX and stamps asset URLs with `immutableFileUrl()`\n- [`index.ts`](/index.ts): serves `Root()` at `/`, and one\n `app.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path))` route\n serves all frontend files\n\n### Upgrading an existing remix\n\nYour copy of this template doesn't update automatically. Two options:\n\n**Minimal (most of the benefit):** point both routes at `serveImmutableFile` —\nyour existing bare URLs redirect into versioned space, the new route serves\nthem, and the whole module graph gets cached (costs one redirect per page view):\n\n```ts\nimport { serveImmutableFile } from \"https://esm.town/v/std/utils/index.ts\";\n\napp.get(\"/__immutable/*\", (c) => serveImmutableFile(c.req.path));\napp.get(\"/frontend/**/*\", (c) => serveImmutableFile(c.req.path)); // was serveFile\n```\n\n**Full upgrade (also removes the redirect):** three self-contained steps —\nno other files needed. Adjust the ``, favicon, and body of `Root()` to\nmatch your app's existing `index.html`, and stamp anything else your shell\nreferences directly (images, css) with `immutableFileUrl()`.\n\n1. Create `frontend/root.tsx`:\n\n```tsx\n/** @jsxImportSource npm:hono@4/jsx */\nimport { raw } from \"npm:hono@4/html\";\nimport { immutableFileUrl } from \"https://esm.town/v/std/utils/index.ts\";\n\n// The HTML shell for the app. It is never cached, so immutableFileUrl can stamp\n// the current val version into each asset URL — the browser caches those\n// immutably, and publishing the val changes the URLs, refetching exactly once.\nexport function Root() {\n return (\n <>\n {raw(\"<!DOCTYPE html>\")}\n <html lang=\"en\">\n <head>\n <meta charSet=\"UTF-8\" />\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <title>React Hono Val Town Starter\n