highlevel.go

Documentation: google.golang.org/api/internal/examples/mock

     1  // Copyright 2021 Google LLC.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package mock demonstrates how to use interfaces to mock interactions with
     6  // service in tests.
     7  package mock
     8  
     9  import (
    10  	"context"
    11  	"fmt"
    12  	"log"
    13  	"os"
    14  
    15  	"google.golang.org/api/option"
    16  	"google.golang.org/api/translate/v3"
    17  )
    18  
    19  // TranslateService is a facade of a `translate.Service`, specifically used to
    20  // for translating text.
    21  type TranslateService interface {
    22  	TranslateText(text, language string) (string, error)
    23  }
    24  
    25  // TranslateTextHighLevel translates text to the given language using the
    26  // provided service.
    27  func TranslateTextHighLevel(service TranslateService, text, language string) (string, error) {
    28  	return service.TranslateText(text, language)
    29  }
    30  
    31  type translateService struct {
    32  	svc *translate.Service
    33  }
    34  
    35  // NewTranslateService creates a TranslateService.
    36  func NewTranslateService(ctx context.Context, opts ...option.ClientOption) TranslateService {
    37  	svc, err := translate.NewService(ctx, opts...)
    38  	if err != nil {
    39  		log.Fatalf("unable to create translate service, shutting down: %v", err)
    40  	}
    41  	return &translateService{svc}
    42  }
    43  
    44  func (t *translateService) TranslateText(text, language string) (string, error) {
    45  	parent := fmt.Sprintf("projects/%s/locations/global", os.Getenv("GOOGLE_CLOUD_PROJECT"))
    46  	resp, err := t.svc.Projects.Locations.TranslateText(parent, &translate.TranslateTextRequest{
    47  		TargetLanguageCode: language,
    48  		Contents:           []string{text},
    49  	}).Do()
    50  	if err != nil {
    51  		return "", fmt.Errorf("unable to translate text: %v", err)
    52  	}
    53  	return resp.Translations[0].TranslatedText, nil
    54  }
    55
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