const test = require('node:test');
const assert = require('node:assert/strict');
const { collectContentReferences, replaceContentReferences } = require('../src/data/content-references');

test('content reference extraction indexes typed sources, media paths, and fonts by owner region', () => {
  const references = collectContentReferences('template', 42, {
    brand: {
      type: 'html',
      value: '<img src="https://signage.example/media/uploads/brand.png"><span style="font-family: \'Acme Display\', sans-serif">Brand</span>',
      font_family: 'Acme Display'
    },
    agenda: { type: 'timetable', timetable_group_id: 7 },
    feed: { type: 'rss', feed_id: '8' },
    forecast: { type: 'weather', weather_location_id: 9, weather_icon_set_id: 'night' },
    api: { type: 'api', source_id: 10 }
  });
  const values = references.map(reference => [reference.owner_key, reference.reference_type, reference.reference_value]);

  assert.deepEqual(values, [
    ['brand', 'media', '/media/uploads/brand.png'],
    ['brand', 'font-family', 'acme display'],
    ['agenda', 'timetable-group', '7'],
    ['feed', 'rss-feed', '8'],
    ['forecast', 'weather-location', '9'],
    ['forecast', 'weather-icon-set', 'night'],
    ['api', 'api-request', '10']
  ]);
  assert.ok(references.every(reference => reference.owner_type === 'template' && reference.owner_id === 42 && Buffer.isBuffer(reference.reference_hash)));
});

test('content reference extraction deduplicates repeated references within a region', () => {
  const references = collectContentReferences('slide', 12, {
    hero: { value: '/media/uploads/a.png', secondary: '/media/uploads/a.png', source_id: 4, copy: { source_id: 4 } }
  });
  assert.deepEqual(references.map(reference => [reference.reference_type, reference.reference_value]), [
    ['media', '/media/uploads/a.png'],
    ['api-request', '4']
  ]);
});

test('content reference replacement preserves unchanged rows and only deletes or inserts the delta', async () => {
  const calls = [];
  const connection = {
    async query(sql, params) {
      calls.push([sql, params]);
      if (sql.startsWith('SELECT id, owner_key')) {
        return [[
          { id: 101, owner_key: 'hero', reference_type: 'media', reference_value: '/media/uploads/keep.png' },
          { id: 102, owner_key: 'api', reference_type: 'api-request', reference_value: '4' },
          { id: 103, owner_key: 'old', reference_type: 'font-family', reference_value: 'arial' }
        ]];
      }
      return [{}];
    }
  };

  await replaceContentReferences(connection, 'slide', 22, {
    hero: { value: '/media/uploads/keep.png' },
    api: { source_id: 5 },
    feed: { feed_id: 8 }
  });

  const deletion = calls.find(([sql]) => sql.startsWith('DELETE FROM c_content_references'));
  assert.deepEqual(deletion[1], ['slide', 22, [102, 103]]);
  const insertion = calls.find(([sql]) => sql.startsWith('INSERT IGNORE INTO c_content_references'));
  assert.equal(insertion[1][0].length, 2);
  assert.deepEqual(insertion[1][0].map(row => [row[3], row[4]]), [['api-request', '5'], ['rss-feed', '8']]);
  assert.ok(!calls.some(([sql]) => sql === 'DELETE FROM c_content_references WHERE owner_type = ? AND owner_id = ?'));
});