Checkpoint peering identity and opt-in discovery

discovery/cli.js

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+'use strict';
+// Read-only CLI. Never writes the reader's discovery.json or scraper queue.
+const fs = require('node:fs');
+const path = require('node:path');
+const { loadCatalog } = require('../greatest');
+const { generate } = require('./engine');
+
+if (!process.argv.includes('--dry-run')) {
+  console.error('Usage: node discovery/cli.js run --dry-run [--data DIR] [--catalog FILE] [--show]');
+  process.exit(2);
+}
+const arg = (name, fallback) => { const i = process.argv.indexOf(name); return i < 0 ? fallback : process.argv[i + 1]; };
+const data = path.resolve(arg('--data', process.env.DATA || 'data'));
+const db = JSON.parse(fs.readFileSync(path.join(data, 'db.json'), 'utf8'));
+let library = [];
+try { library = JSON.parse(fs.readFileSync(path.join(data, 'library-index.json'), 'utf8')).mangas || []; }
+catch (error) { if (error.code !== 'ENOENT') throw error; }
+const greatest = loadCatalog(arg('--catalog', path.join(__dirname, '..', 'greatest', 'catalog.json')));
+const result = generate({ db, library, greatest, cacheDir: path.join(data, 'scraper', 'metadata', 'anilist') });
+const summary = { examined: result.examined, candidates: Object.keys(result.candidates).length,
+  optedInUsers: Object.values(db.users || {}).filter(u => u.settings?.discoveryEnabled).length,
+  feedSizes: Object.values(result.feeds).filter(f => !f.disabled).map(f => f.items.length) };
+if (process.argv.includes('--show')) summary.titles = Object.values(result.feeds).find(f => !f.disabled)?.items
+  .map(item => result.candidates[item.candidateId]?.title) || [];
+console.log(JSON.stringify(summary, null, 2));