update: add calendar to app

src/routes/calendar.js

@@ -0,0 +1,96 @@
+const express = require('express');
+const calendarRepo = require('../repositories/calendarRepo');
+const workflowState = require('../lib/calendarWorkflowState');
+const config = require('../config');
+const asyncHandler = require('../lib/asyncHandler');
+
+const router = express.Router();
+
+router.get(
+  '/people',
+  asyncHandler(async (req, res) => {
+    res.json(await calendarRepo.getPeople());
+  })
+);
+
+router.get(
+  '/slots',
+  asyncHandler(async (req, res) => {
+    const minPeople = req.query.min_people !== undefined ? parseInt(req.query.min_people, 10) : 1;
+    const weeks = req.query.weeks !== undefined ? parseInt(req.query.weeks, 10) : 3;
+    const personIds = req.query.person_ids
+      ? req.query.person_ids.split(',').map(Number).filter((n) => !Number.isNaN(n))
+      : null;
+
+    const slots = await calendarRepo.getSlots({ minPeople, personIds, weeks });
+    res.json(slots);
+  })
+);
+
+router.get(
+  '/last-checked',
+  asyncHandler(async (req, res) => {
+    res.json({ last_checked: await calendarRepo.getLastChecked() });
+  })
+);
+
+router.get('/workflow-status', (req, res) => {
+  res.json(workflowState.getState());
+});
+
+function webhookHeaders() {
+  const headers = { 'Content-Type': 'application/json' };
+  if (config.n8nWebhookUser && config.n8nWebhookPass) {
+    const token = Buffer.from(`${config.n8nWebhookUser}:${config.n8nWebhookPass}`).toString('base64');
+    headers.Authorization = `Basic ${token}`;
+  }
+  return headers;
+}
+
+router.post('/refresh', (req, res) => {
+  if (!config.n8nWebhookUrl) {
+    return res.status(400).json({ error: 'n8n_not_configured' });
+  }
+  if (workflowState.getState().status === 'running') {
+    return res.status(409).json({ ok: false, error: 'A refresh is already in progress' });
+  }
+
+  workflowState.setRunning();
+  res.json({ ok: true });
+
+  // Fire-and-forget: the browser polls GET /workflow-status for the result.
+  (async () => {
+    const controller = new AbortController();
+    const watchdog = setTimeout(() => controller.abort(), 5 * 60 * 1000);
+    try {
+      const response = await fetch(config.n8nWebhookUrl, {
+        method: 'GET',
+        headers: webhookHeaders(),
+        signal: controller.signal,
+      });
+      clearTimeout(watchdog);
+
+      if (!response.ok) {
+        const text = await response.text();
+        workflowState.setError(`n8n returned ${response.status}: ${text}`);
+        return;
+      }
+
+      const data = await response.json();
+      if (!Array.isArray(data.slots)) {
+        workflowState.setError('Unexpected response format from n8n');
+        return;
+      }
+
+      await calendarRepo.ingestSlots(data.slots);
+      workflowState.setSuccess();
+    } catch (err) {
+      clearTimeout(watchdog);
+      const message = err.name === 'AbortError' ? 'n8n did not respond within 5 minutes' : err.message;
+      console.error('[calendar] n8n refresh failed:', message);
+      workflowState.setError(message);
+    }
+  })();
+});
+
+module.exports = router;