package holidayspl_test

import (
	"testing"
	"time"

	"git.ma-al.com/goc_marek/holidayspl"
)

func TestGetEasterDate(t *testing.T) {
	holidays := holidayspl.New()

	tests := []struct {
		year     int
		expected time.Time
	}{
		{2024, time.Date(2024, time.March, 31, 0, 0, 0, 0, time.UTC)},
		{2025, time.Date(2025, time.April, 20, 0, 0, 0, 0, time.UTC)},
		{2026, time.Date(2026, time.April, 5, 0, 0, 0, 0, time.UTC)},
	}

	for _, test := range tests {
		result := holidays.GetEasterDate(test.year)
		if !result.Equal(test.expected) {
			t.Errorf("GetEasterDate(%d) = %v; want %v", test.year, result, test.expected)
		}
	}
}

func TestGetByDate(t *testing.T) {
	holidays := holidayspl.New()

	tests := []struct {
		date     time.Time
		expected string
		found    bool
	}{
		{time.Date(2024, time.January, 1, 0, 0, 0, 0, time.UTC), "New Year", true},
		{time.Date(2024, time.March, 31, 0, 0, 0, 0, time.UTC), "Easter Sunday", true},
		{time.Date(2024, time.December, 25, 0, 0, 0, 0, time.UTC), "Christmas", true},
		{time.Date(2024, time.August, 15, 0, 0, 0, 0, time.UTC), "Assumption of Mary", true},
		{time.Date(2024, time.July, 4, 0, 0, 0, 0, time.UTC), "", false}, // No holiday on this date
	}

	for _, test := range tests {
		result, found := holidays.GetByDate(test.date)
		if found != test.found {
			t.Errorf("GetByDate(%v) = %v; want %v", test.date, found, test.found)
		}
		if found && result.Name != test.expected {
			t.Errorf("GetByDate(%v) = %v; want %v", test.date, result.Name, test.expected)
		}
	}
}

func TestCaching(t *testing.T) {
	holidays := holidayspl.New()

	year := 2024
	// First call should calculate and cache holidays for the year
	holidays.GetHolidaysList(year)
	// Modify the cache and see if the function returns the cached value
	holidays.GetCache()[year][0].Name = "Modified New Year"

	result := holidays.GetHolidaysList(year)
	if result[0].Name != "Modified New Year" {
		t.Errorf("Caching not working properly. Got %v, expected %v", result[0].Name, "Modified New Year")
	}
}