// The read-only, unauthenticated projection of published incidents —
// consumed by goonk's /failures page at build and runtime. Never touches
// an incident until it has been explicitly published (see
// routes/incidents.mjs's publish/unpublish action); an unpublished
// incident is invisible here regardless of how much of it is filled in.
import { publicIncident, publicDetail, publicMarkdown } from '../views.mjs';

const jsonHeaders = {
  'content-type': 'application/json; charset=utf-8',
  'access-control-allow-origin': '*',
  'cache-control': 'public, max-age=60',
};

export function createPublicFailuresRoutes(db) {
  async function handle(req, res, path) {
    if (req.method !== 'GET') return false;

    if (path === '/api/v1/public/failures') {
      const rows = db
        .prepare("SELECT * FROM incidents WHERE published_at<>'' ORDER BY detected_at DESC")
        .all();
      res.writeHead(200, jsonHeaders).end(
        JSON.stringify({
          schemaVersion: 1,
          generatedAt: new Date().toISOString(),
          failures: rows.map(publicIncident),
        }),
      );
      return true;
    }

    const md = path.match(/^\/api\/v1\/public\/failures\/([^/]+)\.md$/);
    if (md) {
      const x = db
        .prepare("SELECT * FROM incidents WHERE public_slug=? AND published_at<>''")
        .get(decodeURIComponent(md[1]));
      if (!x) {
        res.writeHead(404).end('Not found');
        return true;
      }
      res
        .writeHead(200, { ...jsonHeaders, 'content-type': 'text/markdown; charset=utf-8' })
        .end(publicMarkdown(x));
      return true;
    }

    const detail = path.match(/^\/api\/v1\/public\/failures\/([^/]+)$/);
    if (detail) {
      const x = db
        .prepare("SELECT * FROM incidents WHERE public_slug=? AND published_at<>''")
        .get(decodeURIComponent(detail[1]));
      if (!x) {
        res
          .writeHead(404, {
            'content-type': 'application/json; charset=utf-8',
            'access-control-allow-origin': '*',
          })
          .end('{"error":"not_found"}');
        return true;
      }
      res
        .writeHead(200, jsonHeaders)
        .end(JSON.stringify({ schemaVersion: 1, failure: publicDetail(x) }));
      return true;
    }

    return false;
  }

  return { handle };
}