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Changelog

All notable changes to Vali-Holiday are documented here. Follows Keep a Changelog and Semantic Versioning.

[1.0.0] — 2025-07-01​

Added​

  • HolidayInfo model with multilingual support: Spanish (es), English (en), Portuguese (pt), French (fr), German (de).
  • IHolidayProvider interface and BaseHolidayProvider abstract base class.
  • EasterCalculator using the Gaussian algorithm, supporting 9 Easter-based movable holidays.
  • Country providers for 35+ countries across Latin America and Europe.
  • HolidayProviderFactory with CreateAll(), CreateLatinAmerica(), and CreateEurope() factory methods.
  • ValiHoliday with provider management: Register, Supports, SupportedCountries.
  • Holiday queries: IsHoliday, GetHolidays, For.
  • Navigation helpers: GetNextHolidayWithYear, GetPreviousHolidayWithYear.
  • Weekend helpers: IsLongWeekend, HolidaysThisMonth.
  • AddValiHoliday() extension method for IServiceCollection DI registration.

Performance​

  • BaseHolidayProvider.IsHoliday uses an O(1) HashSet cache per year to avoid repeated linear scans when checking the same year multiple times.