package knowledge

import "testing"

func TestParseContentAcceptsLegacyStandardCopy(t *testing.T) {
	content, err := ParseContent([]byte(`{"standard_copy":"请说明情况","risk_note":"必要时转诊"}`))
	if err != nil {
		t.Fatal(err)
	}
	if len(content.CopyTemplates) != 1 || content.CopyTemplates[0].ID != "default" || content.StandardCopy != "请说明情况" {
		t.Fatalf("unexpected legacy content: %#v", content)
	}
}

func TestValidateReferencesRejectsUnknownScenarioField(t *testing.T) {
	content, err := ParseContent([]byte(`{"fields":[{"key":"symptom","name":"症状","source_field":"pet_symptom"}],"copy_templates":[{"id":"copy","title":"说明","content":"{{card.symptom}}"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	if err := ValidateReferences(content, map[string]bool{"pet_name": true}); err == nil {
		t.Fatal("ValidateReferences() error = nil, want unknown source field error")
	}
}

func TestValidateReferencesRejectsUnknownTemplateField(t *testing.T) {
	content, err := ParseContent([]byte(`{"fields":[{"key":"symptom","name":"症状"}],"copy_templates":[{"id":"copy","title":"说明","content":"{{input.pet_name}} {{card.disease}}"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	if err := ValidateReferences(content, map[string]bool{"pet_name": true}); err == nil {
		t.Fatal("ValidateReferences() error = nil, want unknown knowledge field error")
	}
}

func TestRenderResolvesInputAndCardFields(t *testing.T) {
	content, err := ParseContent([]byte(`{"fields":[{"key":"symptom","name":"症状","value":"未明确","source_field":"symptom"},{"key":"disease","name":"可能疾病","value":"需要医生评估"}],"copy_templates":[{"id":"copy","title":"说明","content":"{{input.pet_name}}出现{{card.symptom}}，{{card.disease}}。{{input.pet_age}}岁。"}]}`))
	if err != nil {
		t.Fatal(err)
	}
	copies := Render(content, map[string]interface{}{"pet_name": "团子", "symptom": "呕吐", "pet_age": 3})
	if len(copies) != 1 || copies[0].Content != "团子出现呕吐，需要医生评估。3岁。" {
		t.Fatalf("rendered copies = %#v", copies)
	}
}