Function parseQuerySyntax

Source

export function parseQuerySyntax(query: string): QuerySyntaxToken[] {
  const tokens: QuerySyntaxToken[] = [];
  const parts = query.match(/(?:[^\s"]+|"[^"]*")+/g) || [];

  for (const part of parts) {
    // Remove quotes if present
    const cleaned = part.replaceAll(/(?:^")|(?:"$)/g, "");

    // Check for field:value pattern
    const fieldPattern = /^(genre|format|year|tag):(.+)$/i;
    const fieldMatch = fieldPattern.exec(cleaned);
    if (fieldMatch) {
      const [, field, value] = fieldMatch;

      // Handle year range (e.g., 2020-2023)
      if (field.toLowerCase() === "year" && value.includes("-")) {
        const [min, max] = value.split("-").map((v) => v.trim());
        tokens.push({
          type: "field",
          field: "year",
          value: `${min}-${max}`,
        });
      } else {
        tokens.push({
          type: "field",
          field: field.toLowerCase(),
          value,
        });
      }
    } else {
      // Plain text for fuzzy search
      tokens.push({
        type: "text",
        value: cleaned,
      });
    }
  }

  return tokens;
}
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