// gitea's events. The tool runtime imports this once the broker is bound. It watches the forge and
// emits what appeared.
//
// Emits (novox/hq ADR 0046/0047):
//   module.gitea.repo.created   — a repository appeared, however it was made (push, web UI, or tool)
//
// issue.opened and pull.merged are emitted from the tools (tools/index.ts), at the instant the mesh
// takes that action — the natural point, and one process only. repo.created belongs here instead:
// a repository is usually born from a `git push` or the web UI, which no tool sees, so polling the
// repo list is the only way to catch every path — and keeping it out of the create-repo tool means
// the fact is never announced twice from two processes.
//
// The polling is deliberately unhurried: an event a minute late is still an event, whereas hammering
// the forge for an immediacy nobody asked for is not.

import { emit } from "@novox/mesh-sdk/events";
import { GiteaClient } from "./client.js";

// Without a token there is nothing to watch; log and stay quiet rather than crash the runtime.
let gitea: GiteaClient | null = null;
try {
  gitea = GiteaClient.fromEnv();
} catch (err) {
  console.log(`[gitea] not watching — ${err instanceof Error ? err.message : String(err)}`);
}

// New repositories, by diffing the repo list. Primed silently on the first look, or a restart would
// re-announce every existing repository as freshly created.
const seen = new Set<string>();
let primed = false;
async function pollRepos(client: GiteaClient): Promise<void> {
  const repos = await client.listRepos(1, 50);
  for (const repo of repos) {
    if (!seen.has(repo.full_name)) {
      if (primed) {
        await emit("module.gitea.repo.created", {
          full_name: repo.full_name,
          owner: repo.owner,
          name: repo.name,
          private: repo.private,
          html_url: repo.html_url,
        });
      }
      seen.add(repo.full_name);
    }
  }
  primed = true;
}

if (gitea) {
  const client = gitea;
  const tick = (fn: () => Promise<void>, everyMs: number): void => {
    const run = (): void => void fn().catch((err) => console.error(`[gitea] ${err}`));
    setInterval(run, everyMs);
    run();
  };
  tick(() => pollRepos(client), 60_000);
  console.log("[gitea] watching for new repositories");
}