import { Hono } from "hono";
import { serveStatic } from "@hono/node-server/serve-static";
import { readFile } from "node:fs/promises";
import path from "node:path";
import { LIMITS } from "../shared/types";
import { createCatalogRepo } from "./catalog-repo";
import { openDatabase } from "./db";
import type { Env } from "./env";
import { HttpError } from "./errors";
import { createRateLimiter } from "./rate-limit";
import { catalogRoutes } from "./routes/catalogs";

export async function createApp(env: Env, options?: { now?: () => number }) {
  const db = await openDatabase(env.databasePath);
  const repo = createCatalogRepo(db);
  const limiter = createRateLimiter(
    LIMITS.maxCreatesPerHour,
    LIMITS.rateWindowMs,
    options?.now,
  );

  const app = new Hono();

  app.onError((err, c) => {
    if (err instanceof HttpError) {
      return c.json({ error: err.message }, err.status as 400);
    }
    console.error(err);
    return c.json({ error: "خطای داخلی سرور" }, 500);
  });

  app.route("/api", catalogRoutes({ env, repo, limiter }));

  if (env.isProduction) {
    const dist = "./dist";
    app.use("/*", serveStatic({ root: dist }));
    app.get("*", async (c) => {
      const html = await readFile(path.join("dist", "index.html"), "utf8");
      return c.html(html);
    });
  }

  return app;
}