init(app): Setup client package for web api specific logic

app/worker/index.ts

@@ -0,0 +1,88 @@
+import { Hono } from "hono";
+import type { ChatMessage, JobExtract, MatchResult, ResumePlan } from "../shared/types";
+import { buildPlan, chatReply } from "./ai";
+import { loadCorpus } from "./db";
+import { extractJob } from "./extract";
+import { renderLatex } from "./latex";
+import { matchCorpus } from "./match";
+
+const app = new Hono<{ Bindings: Env }>();
+
+app.onError((err, c) => {
+  console.error(JSON.stringify({ level: "error", path: c.req.path, message: err.message }));
+  return c.json({ error: err.message }, 500);
+});
+
+app.post("/api/extract", async (c) => {
+  const { url } = await c.req.json<{ url?: string }>();
+  const trimmed = url?.trim() ?? "";
+  if (!/^https?:\/\//i.test(trimmed)) {
+    return c.json({ error: "Enter a full http(s) URL to a job posting." }, 400);
+  }
+  let jd: JobExtract;
+  try {
+    jd = await extractJob(trimmed);
+  } catch (err) {
+    const message = err instanceof Error ? err.message : String(err);
+    return c.json({ error: `Could not fetch the posting: ${message}` }, 502);
+  }
+  if (jd.text.length < 120) {
+    return c.json(
+      { error: "The page yielded almost no text (likely rendered by JavaScript). Try the direct job-board URL (Greenhouse/Lever/Workable)." },
+      422,
+    );
+  }
+  return c.json(jd);
+});
+
+app.post("/api/match", async (c) => {
+  const { text } = await c.req.json<{ text?: string }>();
+  if (!text) return c.json({ error: "Missing job text." }, 400);
+  const corpus = await loadCorpus(c.env.DB);
+  return c.json(matchCorpus(corpus, text));
+});
+
+app.post("/api/chat", async (c) => {
+  const body = await c.req.json<{ jd: JobExtract; match: MatchResult; messages: ChatMessage[] }>();
+  const corpus = await loadCorpus(c.env.DB);
+  try {
+    const reply = await chatReply(c.env, corpus, body.jd, body.match, body.messages ?? []);
+    return c.json({ reply });
+  } catch (err) {
+    const message = err instanceof Error ? err.message : String(err);
+    return c.json({ error: `Workers AI is unavailable (${message}). Check \`wrangler login\` / network.` }, 502);
+  }
+});
+
+app.post("/api/plan", async (c) => {
+  const body = await c.req.json<{ jd: JobExtract; match?: MatchResult; chat?: ChatMessage[] }>();
+  if (!body.jd?.text) return c.json({ error: "Missing job extract." }, 400);
+  const corpus = await loadCorpus(c.env.DB);
+  const match = body.match ?? matchCorpus(corpus, body.jd.text);
+  return c.json(await buildPlan(c.env, corpus, body.jd, match, body.chat ?? []));
+});
+
+app.post("/api/latex", async (c) => {
+  const { plan } = await c.req.json<{ plan?: ResumePlan }>();
+  if (!plan) return c.json({ error: "Missing plan." }, 400);
+  const corpus = await loadCorpus(c.env.DB);
+  return c.json({ latex: renderLatex(corpus, plan) });
+});
+
+/** Production fallback compiler; local dev uses the Vite /local/compile middleware (real pdflatex). */
+app.post("/api/pdf", async (c) => {
+  const { latex } = await c.req.json<{ latex?: string }>();
+  if (!latex) return c.json({ error: "Missing latex source." }, 400);
+  const res = await fetch("https://latex.ytotech.com/builds/sync", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ compiler: "pdflatex", resources: [{ main: true, content: latex }] }),
+  });
+  if (res.ok && res.body) {
+    return new Response(res.body, { headers: { "Content-Type": "application/pdf" } });
+  }
+  const log = (await res.text()).slice(0, 4000);
+  return c.json({ error: `Remote LaTeX service responded ${res.status}`, log }, 502);
+});
+
+export default app;