package eventcatalog

import (
	"testing"
	"time"
)

func TestResolveBlackFridayUsesRecurrenceRule(t *testing.T) {
	t.Parallel()

	got, err := ResolveRecurrence(RecurrenceBlackFriday, 2026, time.UTC)
	if err != nil {
		t.Fatal(err)
	}
	if want := "2026-11-27"; got.Format(time.DateOnly) != want {
		t.Fatalf("Black Friday = %s, want %s", got.Format(time.DateOnly), want)
	}
}

func TestValidateEventsDistinguishesCelebrationAndMourning(t *testing.T) {
	t.Parallel()

	events := []Event{
		{ID: "nowruz-1405", TitleFA: "نوروز", StartDate: "2026-03-21", EndDate: "2026-03-24", Type: TypeCultural, Tone: ToneCelebratory, CommercialPosture: PosturePromote, SourceURI: "https://calendar.ut.ac.ir/", SourceVersion: "1405", InclusionRationale: "تقویم رسمی", GeographicScope: "IR", RelevanceBPS: 10000, ConfidenceBPS: 10000},
		{ID: "ashura-1405", TitleFA: "عاشورای حسینی", StartDate: "2026-06-25", EndDate: "2026-06-25", Type: TypeReligious, Tone: ToneMourning, CommercialPosture: PostureNoPromotion, SourceURI: "https://calendar.ut.ac.ir/", SourceVersion: "1405", InclusionRationale: "تقویم رسمی", GeographicScope: "IR", RelevanceBPS: 10000, ConfidenceBPS: 10000},
	}
	if err := ValidateEvents(events); err != nil {
		t.Fatal(err)
	}
}

func TestValidateEventsRejectsPromotionalMourningEvent(t *testing.T) {
	t.Parallel()

	event := Event{ID: "mourning", TitleFA: "یادبود", StartDate: "2026-01-01", EndDate: "2026-01-01", Type: TypeCultural, Tone: ToneMourning, CommercialPosture: PosturePromote, SourceURI: "https://example.test", SourceVersion: "v1", InclusionRationale: "reviewed", GeographicScope: "IR", RelevanceBPS: 10000, ConfidenceBPS: 10000}
	if err := ValidateEvents([]Event{event}); err == nil {
		t.Fatal("expected mourning promotion validation error")
	}
}