package eventcatalog

import (
	"fmt"
	"testing"
)

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

	input := validCoveredImport()
	if err := ValidateImport(input, 1405); err != nil {
		t.Fatal(err)
	}

	input.CoverageStartJalaliYear = 1403
	if err := ValidateImport(input, 1405); err == nil {
		t.Fatal("expected insufficient past coverage")
	}
}

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

	input := validCoveredImport()
	input.Events = input.Events[:len(input.Events)-1]
	if err := ValidateImport(input, 1405); err == nil {
		t.Fatal("expected missing declared coverage year error")
	}
}

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

	input := validCoveredImport()
	input.Events[0].OccasionKey = ""
	if err := ValidateImport(input, 1405); err == nil {
		t.Fatal("expected missing occasion key error")
	}
}

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

	for _, checksum := range []string{"review-required-before-activation-1405-v2", "pending-review", "placeholder"} {
		if err := ValidateReviewableChecksum(checksum); err == nil {
			t.Errorf("expected placeholder checksum %q to be rejected", checksum)
		}
	}
	if err := ValidateReviewableChecksum("sha256:5f70bf18a086007016e948b04aed3b82103a36be3a0ab2aeeabe46d778b8bdc0"); err != nil {
		t.Fatal(err)
	}
}

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

	if err := ValidateApproval("operator-a", "operator-a"); err == nil {
		t.Fatal("expected independent reviewer error")
	}
	if err := ValidateApproval("operator-a", "operator-b"); err != nil {
		t.Fatal(err)
	}
}

func validCoveredImport() Import {
	events := make([]Event, 0, 6)
	for year := 1402; year <= 1407; year++ {
		gregorianYear := year + 621
		event := validCatalogEvent(fmt.Sprintf("education-enrollment-%d", year), fmt.Sprintf("%d-09-01", gregorianYear), year)
		event.OccasionKey = "education-enrollment"
		event.Variant = "CAMPAIGN_WINDOW"
		events = append(events, event)
	}
	return Import{Version: "1402-1407-v2", CoverageStartJalaliYear: 1402, CoverageEndJalaliYear: 1407, SourceURI: "https://calendar.ut.ac.ir/", SourceVersion: "reviewed", SourceChecksum: "abc", ImportedBy: "operator-a", Events: events}
}