Function findBestMatches

Source

export function findBestMatches(
  kenmeiManga: KenmeiManga,
  anilistMangaList: AniListManga[],
  config: Partial<MatchEngineConfig> = {},
): MangaMatchResult {
  const matchConfig = { ...DEFAULT_MATCH_CONFIG, ...config };

  // Calculate match scores for each AniList manga
  const matchResults = anilistMangaList.map((manga) => {
    const matchScore = scoreMatch(kenmeiManga, manga, matchConfig);
    return {
      manga,
      confidence: matchScore.confidence,
      isExactMatch: matchScore.isExactMatch,
      matchedField: matchScore.matchedField,
    };
  });

  // Sort by confidence score (descending)
  matchResults.sort((a, b) => b.confidence - a.confidence);

  // Take only the top matches
  const topMatches = matchResults
    .slice(0, matchConfig.maxMatches)
    .filter((match) => match.confidence > 0);

  // Determine the match status
  let status: MangaMatchResult["status"] = "pending";

  if (topMatches.length === 0) {
    status = "pending"; // No matches found
  } else if (topMatches[0].isExactMatch) {
    status = "matched"; // Found an exact match
  } else if (
    topMatches[0].confidence >= matchConfig.confidenceThreshold &&
    (topMatches.length === 1 ||
      topMatches[0].confidence - topMatches[1].confidence > 20)
  ) {
    status = "matched"; // High confidence and significant gap to next match
  } else {
    status = "pending"; // Multiple potential matches or low confidence
  }

  // Format as MangaMatchResult
  return {
    kenmeiManga,
    anilistMatches: topMatches.map(({ manga, confidence }) => ({
      manga,
      confidence,
    })),
    status,
    selectedMatch: status === "matched" ? topMatches[0].manga : undefined,
    matchDate: new Date(),
  };
}
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