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Add web frontend

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This commit is contained in:
James Magahern
2026-02-13 23:15:12 -08:00
parent 5faa57a741
commit 16a668b6ee
37 changed files with 4149 additions and 69 deletions
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2
server/.gitignore vendored
View File

@@ -3,7 +3,7 @@ node_modules
.env.*
dev.db
*.db
*.db-journal
prisma/migrations
.DS_Store
dist

13
server/README.md
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@@ -13,12 +13,20 @@ Backend API for:
```bash
cp .env.example .env
npm run db:migrate
npm run dev
```
Migrations are applied automatically on server startup (`prisma migrate deploy`).
Open docs: `http://localhost:8787/docs`
## Run Modes
- `npm run dev`: runs `src/index.ts` with `tsx` in watch mode (auto-restart on file changes). Use for local development.
- `npm run start`: runs compiled `dist/index.js` with Node.js (no watch mode). Use for production-like runs.
Both modes run startup checks (`predev` / `prestart`) and apply migrations at app boot.
## Auth
Set `ADMIN_TOKEN` and send:
@@ -34,6 +42,7 @@ If `ADMIN_TOKEN` is not set, the server runs in open mode (dev).
## API
- `GET /health`
- `GET /v1/auth/session`
- `GET /v1/chats`
- `POST /v1/chats`
- `GET /v1/chats/:chatId`
@@ -41,6 +50,8 @@ If `ADMIN_TOKEN` is not set, the server runs in open mode (dev).
- `POST /v1/chat-completions`
- `POST /v1/chat-completions/stream` (SSE)
When `chatId` is provided to completion endpoints, you can send full conversation context. The server now stores only new non-assistant messages to avoid duplicate history rows.
`POST /v1/chat-completions` body example:
```json

38
server/package-lock.json generated
View File

@@ -19,11 +19,11 @@
"fastify": "^5.7.2",
"openai": "^6.16.0",
"pino-pretty": "^13.1.3",
"prisma": "^6.6.0",
"zod": "^4.3.6"
},
"devDependencies": {
"@types/node": "^25.0.10",
"prisma": "^6.6.0",
"tsx": "^4.21.0",
"typescript": "^5.9.3"
}
@@ -64,7 +64,6 @@
"cpu": [
"ppc64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -81,7 +80,6 @@
"cpu": [
"arm"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -98,7 +96,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -115,7 +112,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -132,7 +128,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -149,7 +144,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -166,7 +160,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -183,7 +176,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -200,7 +192,6 @@
"cpu": [
"arm"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -217,7 +208,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -234,7 +224,6 @@
"cpu": [
"ia32"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -251,7 +240,6 @@
"cpu": [
"loong64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -268,7 +256,6 @@
"cpu": [
"mips64el"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -285,7 +272,6 @@
"cpu": [
"ppc64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -302,7 +288,6 @@
"cpu": [
"riscv64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -319,7 +304,6 @@
"cpu": [
"s390x"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -336,7 +320,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -353,7 +336,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -370,7 +352,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -387,7 +368,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -404,7 +384,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -421,7 +400,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -438,7 +416,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -455,7 +432,6 @@
"cpu": [
"arm64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -472,7 +448,6 @@
"cpu": [
"ia32"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -489,7 +464,6 @@
"cpu": [
"x64"
],
"dev": true,
"license": "MIT",
"optional": true,
"os": [
@@ -826,7 +800,6 @@
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/@prisma/config/-/config-6.6.0.tgz",
"integrity": "sha512-d8FlXRHsx72RbN8nA2QCRORNv5AcUnPXgtPvwhXmYkQSMF/j9cKaJg+9VcUzBRXGy9QBckNzEQDEJZdEOZ+ubA==",
"devOptional": true,
"license": "Apache-2.0",
"dependencies": {
"esbuild": ">=0.12 <1",
@@ -837,14 +810,12 @@
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/@prisma/debug/-/debug-6.6.0.tgz",
"integrity": "sha512-DL6n4IKlW5k2LEXzpN60SQ1kP/F6fqaCgU/McgaYsxSf43GZ8lwtmXLke9efS+L1uGmrhtBUP4npV/QKF8s2ZQ==",
"devOptional": true,
"license": "Apache-2.0"
},
"node_modules/@prisma/engines": {
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/@prisma/engines/-/engines-6.6.0.tgz",
"integrity": "sha512-nC0IV4NHh7500cozD1fBoTwTD1ydJERndreIjpZr/S3mno3P6tm8qnXmIND5SwUkibNeSJMpgl4gAnlqJ/gVlg==",
"devOptional": true,
"hasInstallScript": true,
"license": "Apache-2.0",
"dependencies": {
@@ -858,14 +829,12 @@
"version": "6.6.0-53.f676762280b54cd07c770017ed3711ddde35f37a",
"resolved": "https://registry.npmjs.org/@prisma/engines-version/-/engines-version-6.6.0-53.f676762280b54cd07c770017ed3711ddde35f37a.tgz",
"integrity": "sha512-JzRaQ5Em1fuEcbR3nUsMNYaIYrOT1iMheenjCvzZblJcjv/3JIuxXN7RCNT5i6lRkLodW5ojCGhR7n5yvnNKrw==",
"devOptional": true,
"license": "Apache-2.0"
},
"node_modules/@prisma/fetch-engine": {
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/@prisma/fetch-engine/-/fetch-engine-6.6.0.tgz",
"integrity": "sha512-Ohfo8gKp05LFLZaBlPUApM0M7k43a0jmo86YY35u1/4t+vuQH9mRGU7jGwVzGFY3v+9edeb/cowb1oG4buM1yw==",
"devOptional": true,
"license": "Apache-2.0",
"dependencies": {
"@prisma/debug": "6.6.0",
@@ -877,7 +846,6 @@
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/@prisma/get-platform/-/get-platform-6.6.0.tgz",
"integrity": "sha512-3qCwmnT4Jh5WCGUrkWcc6VZaw0JY7eWN175/pcb5Z6FiLZZ3ygY93UX0WuV41bG51a6JN/oBH0uywJ90Y+V5eA==",
"devOptional": true,
"license": "Apache-2.0",
"dependencies": {
"@prisma/debug": "6.6.0"
@@ -1061,7 +1029,6 @@
"version": "0.27.2",
"resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.27.2.tgz",
"integrity": "sha512-HyNQImnsOC7X9PMNaCIeAm4ISCQXs5a5YasTXVliKv4uuBo1dKrG0A+uQS8M5eXjVMnLg3WgXaKvprHlFJQffw==",
"devOptional": true,
"hasInstallScript": true,
"license": "MIT",
"bin": {
@@ -1103,7 +1070,6 @@
"version": "3.6.0",
"resolved": "https://registry.npmjs.org/esbuild-register/-/esbuild-register-3.6.0.tgz",
"integrity": "sha512-H2/S7Pm8a9CL1uhp9OvjwrBh5Pvx0H8qVOxNu8Wed9Y7qv56MPtq+GGM8RJpq6glYJn9Wspr8uw7l55uyinNeg==",
"devOptional": true,
"license": "MIT",
"dependencies": {
"debug": "^4.3.4"
@@ -1276,7 +1242,6 @@
"version": "2.3.3",
"resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
"integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
"dev": true,
"hasInstallScript": true,
"license": "MIT",
"optional": true,
@@ -1679,7 +1644,6 @@
"version": "6.6.0",
"resolved": "https://registry.npmjs.org/prisma/-/prisma-6.6.0.tgz",
"integrity": "sha512-SYCUykz+1cnl6Ugd8VUvtTQq5+j1Q7C0CtzKPjQ8JyA2ALh0EEJkMCS+KgdnvKW1lrxjtjCyJSHOOT236mENYg==",
"devOptional": true,
"hasInstallScript": true,
"license": "Apache-2.0",
"dependencies": {

12
server/package.json
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@@ -9,12 +9,12 @@
"predev": "node scripts/ensure-prisma-client.mjs",
"prestart": "node scripts/ensure-prisma-client.mjs",
"prebuild": "node scripts/ensure-prisma-client.mjs",
"dev": "tsx watch src/index.ts",
"dev": "node ./node_modules/tsx/dist/cli.mjs watch src/index.ts",
"start": "node dist/index.js",
"build": "tsc -p tsconfig.json",
"prisma:generate": "prisma generate",
"db:migrate": "prisma migrate dev",
"db:studio": "prisma studio"
"build": "node ./node_modules/typescript/bin/tsc -p tsconfig.json",
"prisma:generate": "node ./node_modules/prisma/build/index.js generate",
"db:migrate": "node ./node_modules/prisma/build/index.js migrate dev",
"db:studio": "node ./node_modules/prisma/build/index.js studio"
},
"dependencies": {
"@anthropic-ai/sdk": "^0.71.2",
@@ -26,12 +26,12 @@
"dotenv": "^17.2.3",
"fastify": "^5.7.2",
"openai": "^6.16.0",
"prisma": "^6.6.0",
"pino-pretty": "^13.1.3",
"zod": "^4.3.6"
},
"devDependencies": {
"@types/node": "^25.0.10",
"prisma": "^6.6.0",
"tsx": "^4.21.0",
"typescript": "^5.9.3"
}

22
server/scripts/ensure-prisma-client.mjs
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@@ -7,7 +7,7 @@ const scriptDir = dirname(fileURLToPath(import.meta.url));
const rootDir = resolve(scriptDir, "..");
const clientDir = join(rootDir, "node_modules", ".prisma", "client");
const clientIndex = join(clientDir, "index.js");
const prismaBin = join(rootDir, "node_modules", ".bin", "prisma");
const prismaJs = join(rootDir, "node_modules", "prisma", "build", "index.js");
const genericEngine = join(clientDir, "libquery_engine.node");
function parseExpectedEngineFiles() {
@@ -22,15 +22,18 @@ function missingEngineFiles(expectedFiles) {
}
function runPrismaGenerate() {
if (!existsSync(prismaBin)) {
throw new Error(
"Prisma CLI not found. Install dev dependencies and run `npm run prisma:generate`."
);
if (existsSync(prismaJs)) {
execFileSync(process.execPath, [prismaJs, "generate"], {
cwd: rootDir,
stdio: "inherit",
env: { ...process.env, PRISMA_HIDE_UPDATE_MESSAGE: "1" },
});
return;
}
execFileSync(prismaBin, ["generate"], {
cwd: rootDir,
stdio: "inherit",
});
throw new Error(
"Prisma CLI not found at node_modules/prisma/build/index.js. Install dependencies and run `npm run prisma:generate`."
);
}
let expectedFiles = parseExpectedEngineFiles();
@@ -54,4 +57,3 @@ if (missingFiles.length) {
)}. Ensure deployment copies node_modules/.prisma (including dot-directories).`
);
}

27
server/src/db-init.ts Normal file
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@@ -0,0 +1,27 @@
import { execFileSync } from "node:child_process";
import { existsSync } from "node:fs";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import type { FastifyBaseLogger } from "fastify";
function runPrismaCli(rootDir: string, args: string[]) {
const prismaJs = join(rootDir, "node_modules", "prisma", "build", "index.js");
if (existsSync(prismaJs)) {
execFileSync(process.execPath, [prismaJs, ...args], {
cwd: rootDir,
stdio: "inherit",
env: { ...process.env, PRISMA_HIDE_UPDATE_MESSAGE: "1" },
});
return;
}
throw new Error("Prisma CLI not found at node_modules/prisma/build/index.js. Run `npm install` in /server.");
}
export async function ensureDatabaseReady(logger: FastifyBaseLogger) {
const rootDir = resolve(dirname(fileURLToPath(import.meta.url)), "..");
const startedAt = Date.now();
logger.info("Applying Prisma migrations...");
runPrismaCli(rootDir, ["migrate", "deploy"]);
logger.info({ durationMs: Date.now() - startedAt }, "Prisma migrations applied");
}

3
server/src/index.ts
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@@ -4,6 +4,7 @@ import swagger from "@fastify/swagger";
import swaggerUI from "@fastify/swagger-ui";
import sensible from "@fastify/sensible";
import { env } from "./env.js";
import { ensureDatabaseReady } from "./db-init.js";
import { registerRoutes } from "./routes.js";
const app = Fastify({
@@ -15,6 +16,8 @@ const app = Fastify({
},
});
await ensureDatabaseReady(app.log);
await app.register(cors, { origin: true, credentials: true });
await app.register(swagger, {

65
server/src/routes.ts
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@@ -2,12 +2,59 @@ import { z } from "zod";
import type { FastifyInstance } from "fastify";
import { prisma } from "./db.js";
import { requireAdmin } from "./auth.js";
import { env } from "./env.js";
import { runMultiplex } from "./llm/multiplexer.js";
import { runMultiplexStream } from "./llm/streaming.js";
type IncomingChatMessage = {
role: "system" | "user" | "assistant" | "tool";
content: string;
name?: string;
};
function sameMessage(a: IncomingChatMessage, b: IncomingChatMessage) {
return a.role === b.role && a.content === b.content && (a.name ?? null) === (b.name ?? null);
}
async function storeNonAssistantMessages(chatId: string, messages: IncomingChatMessage[]) {
const incoming = messages.filter((m) => m.role !== "assistant");
if (!incoming.length) return;
const existing = await prisma.message.findMany({
where: { chatId },
orderBy: { createdAt: "asc" },
select: { role: true, content: true, name: true },
});
const existingNonAssistant = existing.filter((m) => m.role !== "assistant");
let sharedPrefix = 0;
const max = Math.min(existingNonAssistant.length, incoming.length);
while (sharedPrefix < max && sameMessage(existingNonAssistant[sharedPrefix] as IncomingChatMessage, incoming[sharedPrefix])) {
sharedPrefix += 1;
}
if (sharedPrefix === incoming.length) return;
const toInsert = sharedPrefix === existingNonAssistant.length ? incoming.slice(existingNonAssistant.length) : incoming;
if (!toInsert.length) return;
await prisma.message.createMany({
data: toInsert.map((m) => ({
chatId,
role: m.role as any,
content: m.content,
name: m.name,
})),
});
}
export async function registerRoutes(app: FastifyInstance) {
app.get("/health", async () => ({ ok: true }));
app.get("/v1/auth/session", async (req) => {
requireAdmin(req);
return { authenticated: true, mode: env.ADMIN_TOKEN ? "token" : "open" };
});
app.get("/v1/chats", async (req) => {
requireAdmin(req);
const chats = await prisma.chat.findMany({
@@ -92,14 +139,9 @@ export async function registerRoutes(app: FastifyInstance) {
if (!exists) return app.httpErrors.notFound("chat not found");
}
// store user messages (anything not assistant) for DB fidelity
// Store only new non-assistant messages to avoid duplicate history entries.
if (body.chatId) {
const toInsert = body.messages.filter((m) => m.role !== "assistant");
if (toInsert.length) {
await prisma.message.createMany({
data: toInsert.map((m) => ({ chatId: body.chatId!, role: m.role as any, content: m.content, name: m.name })),
});
}
await storeNonAssistantMessages(body.chatId, body.messages);
}
const result = await runMultiplex(body);
@@ -137,14 +179,9 @@ export async function registerRoutes(app: FastifyInstance) {
if (!exists) return app.httpErrors.notFound("chat not found");
}
// store user messages (anything not assistant) for DB fidelity
// Store only new non-assistant messages to avoid duplicate history entries.
if (body.chatId) {
const toInsert = body.messages.filter((m) => m.role !== "assistant");
if (toInsert.length) {
await prisma.message.createMany({
data: toInsert.map((m) => ({ chatId: body.chatId!, role: m.role as any, content: m.content, name: m.name })),
});
}
await storeNonAssistantMessages(body.chatId, body.messages);
}
reply.raw.writeHead(200, {