Function scoreMatch

Source

export function scoreMatch(
  kenmeiManga: KenmeiManga,
  anilistManga: AniListManga,
  config: Partial<MatchEngineConfig> = {},
): { confidence: number; isExactMatch: boolean; matchedField: string } {
  const matchConfig = { ...DEFAULT_MATCH_CONFIG, ...config };
  const {
    caseSensitive,
    preferEnglishTitles,
    preferRomajiTitles,
    useAlternativeTitles,
  } = matchConfig;

  // Normalize the Kenmei title
  const kenmeiTitle = normalizeString(kenmeiManga.title, caseSensitive);

  // Skip extremely short titles (likely errors)
  if (kenmeiTitle.length < matchConfig.minTitleLength) {
    return { confidence: 0, isExactMatch: false, matchedField: "none" };
  }

  // Array to store all similarity scores with their sources
  const scores: Array<{ field: string; score: number }> = [];

  // Check primary titles - early return if exact match found
  const primaryMatch = scorePrimaryTitles(kenmeiTitle, anilistManga, scores);
  if (primaryMatch) return primaryMatch;

  // Check alternative titles if enabled - early return if exact match found
  if (useAlternativeTitles) {
    const synonymMatch = scoreSynonyms(kenmeiTitle, anilistManga, scores);
    if (synonymMatch) return synonymMatch;

    const altTitleMatch = scoreAlternativeTitles(
      kenmeiManga,
      anilistManga,
      caseSensitive,
      matchConfig.minTitleLength,
      scores,
    );
    if (altTitleMatch) return altTitleMatch;
  }

  // Calculate final score with preferences
  return calculateFinalScore(scores, preferEnglishTitles, preferRomajiTitles);
}
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