package tender

import (
	"context"
	"io"
	"testing"

	"tm/pkg/ai_summarizer"
	"tm/pkg/logger"
)

type noopTenderTestLogger struct{}

func (noopTenderTestLogger) Debug(string, map[string]interface{}) {}
func (noopTenderTestLogger) Info(string, map[string]interface{})  {}
func (noopTenderTestLogger) Warn(string, map[string]interface{})  {}
func (noopTenderTestLogger) Error(string, map[string]interface{}) {}
func (noopTenderTestLogger) Fatal(string, map[string]interface{}) {}
func (l noopTenderTestLogger) WithFields(map[string]interface{}) logger.Logger {
	return l
}
func (noopTenderTestLogger) Sync() error { return nil }

type stubRecommendationTranslationStorage struct {
	translations map[string]ai_summarizer.StoredTranslation
}

func (s stubRecommendationTranslationStorage) GetSummaryFromStorage(context.Context, string, string) (string, error) {
	return "", ai_summarizer.ErrSummaryNotReady
}

func (s stubRecommendationTranslationStorage) GetDocumentSummariesFromStorage(context.Context, string, string) ([]ai_summarizer.DocumentSummary, error) {
	return nil, nil
}

func (s stubRecommendationTranslationStorage) GetTranslationFromStorage(_ context.Context, contractFolderID, noticePublicationID, language string) (ai_summarizer.StoredTranslation, error) {
	key := contractFolderID + "|" + noticePublicationID + "|" + language
	if translation, ok := s.translations[key]; ok {
		return translation, nil
	}
	return ai_summarizer.StoredTranslation{}, ai_summarizer.ErrTranslationNotReady
}

func (s stubRecommendationTranslationStorage) ListDocuments(context.Context, string, string) ([]ai_summarizer.StoredDocument, error) {
	return nil, nil
}

func (s stubRecommendationTranslationStorage) DownloadDocument(context.Context, string) (io.ReadCloser, error) {
	return nil, ai_summarizer.ErrObjectNotFound
}

func TestBuildRecommendedTenderResponseAppliesStoredTranslation(t *testing.T) {
	service := &tenderService{
		aiSummarizerStorage: stubRecommendationTranslationStorage{
			translations: map[string]ai_summarizer.StoredTranslation{
				"folder-1|00123456-2026|fr": {
					Title:       "Titre traduit",
					Description: "Description traduite",
				},
			},
		},
		defaultLanguage: "en",
		logger:          noopTenderTestLogger{},
	}

	tender := Tender{
		ContractFolderID:    "folder-1",
		NoticePublicationID: "00123456-2026",
		Title:               "Original title",
		Description:         "Original description",
	}

	resp := service.buildRecommendedTenderResponse(
		context.Background(),
		tender,
		3,
		"Strong fit",
		"PROC_folder-1/00123456-2026",
		"fr",
		nil,
	)

	if resp.Title != "Titre traduit" {
		t.Fatalf("expected translated title, got %q", resp.Title)
	}
	if resp.Description != "Description traduite" {
		t.Fatalf("expected translated description, got %q", resp.Description)
	}
	if resp.Language != "fr" {
		t.Fatalf("expected response language fr, got %q", resp.Language)
	}
	if resp.Rank != 3 {
		t.Fatalf("expected rank 3, got %d", resp.Rank)
	}
	if resp.Analysis != "Strong fit" {
		t.Fatalf("expected analysis to be preserved, got %q", resp.Analysis)
	}
	if resp.ProcedureRef != "PROC_folder-1/00123456-2026" {
		t.Fatalf("expected procedure ref to be preserved, got %q", resp.ProcedureRef)
	}
}

func TestBuildRecommendedTenderResponseKeepsOriginalTextWithoutStoredTranslation(t *testing.T) {
	service := &tenderService{
		aiSummarizerStorage: stubRecommendationTranslationStorage{},
		defaultLanguage:     "en",
		logger:              noopTenderTestLogger{},
	}

	tender := Tender{
		ContractFolderID:    "folder-1",
		NoticePublicationID: "00123456-2026",
		Title:               "Original title",
		Description:         "Original description",
	}

	resp := service.buildRecommendedTenderResponse(
		context.Background(),
		tender,
		1,
		"Fallback",
		"PROC_folder-1/00123456-2026",
		"fr",
		nil,
	)

	if resp.Title != "Original title" {
		t.Fatalf("expected original title, got %q", resp.Title)
	}
	if resp.Description != "Original description" {
		t.Fatalf("expected original description, got %q", resp.Description)
	}
	if resp.Language != "" {
		t.Fatalf("expected empty language when no translation exists, got %q", resp.Language)
	}
}