package knowledge

import (
	"strings"
	"testing"
)

func TestPatrolTagFromQuestionPreservesSearchPhrase(t *testing.T) {
	got := PatrolTagFromQuestion("化療後皮膚敏感要換什麼沐浴乳")
	if got != "化療後皮膚敏感要換什麼沐浴乳" {
		t.Fatalf("expected preserved question, got %q", got)
	}
}

func TestAnchorPatrolTagToProductInjectsCategory(t *testing.T) {
	in := PatrolTagInput{
		ProductName: "天然洗衣精",
		MatchTags:   []string{"洗衣精", "衣物清潔"},
	}
	got := AnchorPatrolTagToProduct("敏感肌 推薦", in)
	if got == "敏感肌 推薦" {
		t.Fatal("expected product category to be injected into generic tag")
	}
	if !strings.Contains(got, "洗衣") {
		t.Fatalf("expected laundry anchor in %q", got)
	}
}

func TestAnchorPatrolTagToProductPrefersValueAnchor(t *testing.T) {
	in := PatrolTagInput{
		ProductName:     "抗敏無香洗衣精",
		ProductFeatures: "完全無香、抗敏、適合化療族群",
		MatchTags:       []string{"無香", "洗衣精"},
	}
	got := AnchorPatrolTagToProduct("皮膚癢 推薦", in)
	if !strings.Contains(got, "無香") {
		t.Fatalf("expected value anchor in %q", got)
	}
	if !strings.Contains(got, "洗衣精") {
		t.Fatalf("expected product form in %q", got)
	}
}

func TestPatrolTagFromQuestionCompressesGenericLabel(t *testing.T) {
	got := PatrolTagFromQuestion("敏感肌保養")
	if got == "敏感肌保養" {
		t.Fatal("expected compression for generic short label")
	}
	if got == "" {
		t.Fatal("expected non-empty tag")
	}
}