package gcv_test

import (
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"

	"google.golang.org/api/googleapi/transport"
	vision "google.golang.org/api/vision/v1"
)

// https://github.com/google/google-api-go-client/blob/master/GettingStarted.md

const developerKey = `Your ServerKey`

func ExampleGoogleCloudVisionAPI() {

	data, err := ioutil.ReadFile("fiveyears.jpg")

	enc := base64.StdEncoding.EncodeToString(data)
	img := &vision.Image{Content: enc}

	feature := &vision.Feature{
		Type:       "LABEL_DETECTION",
		MaxResults: 10,
	}

	req := &vision.AnnotateImageRequest{
		Image:    img,
		Features: []*vision.Feature{feature},
	}

	batch := &vision.BatchAnnotateImagesRequest{
		Requests: []*vision.AnnotateImageRequest{req},
	}

	client := &http.Client{
		Transport: &transport.APIKey{Key: developerKey},
	}
	svc, err := vision.New(client)
	if err != nil {
		log.Fatal(err)
	}
	res, err := svc.Images.Annotate(batch).Do()
	if err != nil {
		log.Fatal(err)
	}

	body, err := json.Marshal(res.Responses[0].LabelAnnotations)
	fmt.Println(string(body))
}