afe91089e5
Add persistent EPG priority ordering, source reorder validation, and priority-aware EPG matching for live channels. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
62 lines
3.0 KiB
JavaScript
62 lines
3.0 KiB
JavaScript
const { numericPriority, sortEpgSources } = require('./epgSourceOrdering');
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function normalize(value) {
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return String(value || '').normalize('NFKD').replace(/[\u0300-\u036f]/g, '')
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.toLowerCase().replace(/[^a-z0-9]+/g, ' ').trim();
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}
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function candidateScore(channel, epgChannel) {
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const variantIds = new Set((channel.variants || []).flatMap(variant => [variant.tvgId, variant.epg_channel_id]).filter(Boolean).map(String));
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if (variantIds.has(String(epgChannel.id))) return 100;
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const wantedNames = new Set([channel.standardName, channel.displayName, ...(channel.variants || []).map(variant => variant.name)].map(normalize).filter(Boolean));
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const candidateName = normalize(epgChannel.name);
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if (wantedNames.has(candidateName)) return 90;
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if (candidateName && [...wantedNames].some(name => name.includes(candidateName) || candidateName.includes(name))) return 50;
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return 0;
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}
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function chooseBestMatch(channel, candidates, epgSources) {
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const language = channel.language?.code;
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const eligible = sortEpgSources(epgSources, { enabledOnly: true }).filter(source =>
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!source.language || !language || language === 'und' || source.language === language
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);
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const priorities = new Map(eligible.map(source => [source.id, numericPriority(source)]));
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return candidates
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.filter(candidate => priorities.has(candidate.sourceId))
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.map(candidate => ({ ...candidate, matchConfidence: candidateScore(channel, candidate) }))
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.filter(candidate => candidate.matchConfidence > 0)
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.sort((left, right) => right.matchConfidence - left.matchConfidence ||
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priorities.get(left.sourceId) - priorities.get(right.sourceId) || left.sourceId - right.sourceId)[0] || null;
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}
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function findBestMatch(database, channel, epgSources, now = Date.now()) {
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const language = channel.language?.code;
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const enabled = sortEpgSources(epgSources, { enabledOnly: true }).filter(source =>
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!source.language || !language || language === 'und' || source.language === language
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);
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if (!enabled.length) return null;
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const ids = enabled.map(source => source.id);
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const placeholders = ids.map(() => '?').join(',');
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const epgChannels = database.prepare(`
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SELECT source_id AS sourceId, item_id AS id, name
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FROM playlist_items
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WHERE type = 'epg_channel' AND source_id IN (${placeholders})
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`).all(...ids);
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const best = chooseBestMatch(channel, epgChannels, enabled);
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if (!best) return null;
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const current = database.prepare(`
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SELECT title, description, start_time AS startTime, end_time AS endTime
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FROM epg_programs
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WHERE source_id = ? AND channel_id = ? AND start_time <= ? AND end_time > ?
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ORDER BY start_time DESC LIMIT 1
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`).get(best.sourceId, best.id, now, now);
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return {
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sourceId: best.sourceId,
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channelId: best.id,
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matchConfidence: best.matchConfidence,
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currentProgram: current || undefined
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};
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}
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module.exports = { candidateScore, chooseBestMatch, findBestMatch, normalize };
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