package subscribe

import (
	"testing"
	"time"

	"github.com/perfect-panel/server/internal/model/user"
)

func TestPromoEligibilityEvaluatorMatch(t *testing.T) {
	now := time.Unix(1710000000, 0)
	campaignEnd := now.Add(2 * time.Hour)

	campaign := subscribePromoCandidate{
		RuleName:   "限时活动",
		RuleType:   promoRuleTypeCampaign,
		PromoPrice: 99,
		EndTime:    &campaignEnd,
	}
	ok, expiresAt, err := (&promoEligibilityEvaluator{}).match(campaign, now)
	if err != nil {
		t.Fatalf("campaign match error: %v", err)
	}
	if !ok {
		t.Fatal("campaign promo should match without login")
	}
	if got, want := unixSeconds(expiresAt), campaignEnd.Unix(); got != want {
		t.Fatalf("campaign expires_at = %d, want %d", got, want)
	}

	newUser := subscribePromoCandidate{
		RuleName:   "新客7天优惠",
		RuleType:   promoRuleTypeNewUser,
		PromoPrice: 279,
		Params:     `{"window_hours":168}`,
	}
	ok, _, err = (&promoEligibilityEvaluator{}).match(newUser, now)
	if err != nil {
		t.Fatalf("anonymous new_user match error: %v", err)
	}
	if ok {
		t.Fatal("new_user promo should not match without login")
	}

	userInfo := &user.User{Id: 1, CreatedAt: now.Add(-24 * time.Hour)}
	ok, expiresAt, err = (&promoEligibilityEvaluator{userInfo: userInfo}).match(newUser, now)
	if err != nil {
		t.Fatalf("logged-in new_user match error: %v", err)
	}
	if !ok {
		t.Fatal("new_user promo should match inside window")
	}
	if got, want := unixSeconds(expiresAt), userInfo.CreatedAt.Add(168*time.Hour).Unix(); got != want {
		t.Fatalf("new_user expires_at = %d, want %d", got, want)
	}
}

func TestSubscribePromoCandidateActiveWindow(t *testing.T) {
	now := time.Unix(1710000000, 0)
	start := now.Add(-time.Hour)
	end := now.Add(time.Hour)

	if !(subscribePromoCandidate{PromoPrice: 1, StartTime: &start, EndTime: &end}).isActive(now) {
		t.Fatal("candidate inside active window should be active")
	}
	if (subscribePromoCandidate{PromoPrice: 0, StartTime: &start, EndTime: &end}).isActive(now) {
		t.Fatal("candidate with zero promo price should not be active")
	}
	if (subscribePromoCandidate{PromoPrice: 1, StartTime: &end}).isActive(now) {
		t.Fatal("candidate before start time should not be active")
	}
	if (subscribePromoCandidate{PromoPrice: 1, EndTime: &start}).isActive(now) {
		t.Fatal("candidate after end time should not be active")
	}
}