Improve several parts.

- use go modele
- dont use attachments
- refactor fat main.go
- refactor fat main.go
- add Blocks at slack-go/slack/webhooks.go

article.go

@@ -0,0 +1,14 @@
+package main
+
+// Ranking structure
+type Ranking struct {
+	Entries []Article `json:"entries"`
+}
+
+// Article structure
+type Article struct {
+	Title      string `json:"title"`
+	URL        string `json:"url"`
+	Categories string `json:"categories"`
+	Image      string `json:"image"`
+}

article_repository.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+)
+
+// ArticleRepository class
+type ArticleRepository struct {
+}
+
+// FindRanking func
+func (a ArticleRepository) FindRanking() ([]Article, error) {
+	resp, err := http.Get(endpoint)
+
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	var ranking Ranking
+	if err := json.Unmarshal(body, &ranking); err != nil {
+		return nil, err
+	}
+
+	return ranking.Entries, nil
+}

go.mod

@@ -0,0 +1,5 @@
+module article_slack
+
+go 1.13
+
+require github.com/slack-go/slack v0.6.3

go.sum

@@ -0,0 +1,16 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-test/deep v1.0.4 h1:u2CU3YKy9I2pmu9pX0eq50wCgjfGIt539SqR7FbHiho=
+github.com/go-test/deep v1.0.4/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
+github.com/gorilla/websocket v1.2.0 h1:VJtLvh6VQym50czpZzx07z/kw9EgAxI3x1ZB8taTMQQ=
+github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/nlopes/slack v0.6.0 h1:jt0jxVQGhssx1Ib7naAOZEZcGdtIhTzkP0nopK0AsRA=
+github.com/nlopes/slack v0.6.0/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/slack-go/slack v0.6.3 h1:qU037g8gQ71EuH6S9zYKnvYrEUj0fLFH4HFekFqBoRU=
+github.com/slack-go/slack v0.6.3/go.mod h1:HE4RwNe7YpOg/F0vqo5PwXH3Hki31TplTvKRW9dGGaw=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=

main.go

@@ -1,12 +1,10 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
-	"github.com/nlopes/slack"
-	"io/ioutil"
-	"net/http"
 	"strconv"
+
+	"github.com/slack-go/slack"
 )
 
 const (
@@ -15,21 +13,9 @@ const (
 	rankCount  = 10
 )
 
-// Ranking structure
-type Ranking struct {
-	Entries []Article `json:"entries"`
-}
-
-// Article structure
-type Article struct {
-	Title      string `json:"title"`
-	URL        string `json:"url"`
-	Categories string `json:"categories"`
-	Image      string `json:"image"`
-}
-
 func main() {
-	articles, err := getArticles()
+	repo := ArticleRepository{}
+	articles, err := repo.FindRanking()
 	if err != nil {
 		fmt.Println(err)
 		return
@@ -54,11 +40,9 @@ func postArticle(articles []Article, count int) error {
 // postSlack function
 func postSlack(article Article, rank int) error {
 	payload := &slack.WebhookMessage{
-		Attachments: []slack.Attachment{
-			{
-				Blocks: []slack.Block{
-					getArticleSectionBlock(article, rank),
-				},
+		Blocks: slack.Blocks{
+			BlockSet: []slack.Block{
+				getArticleSectionBlock(article, rank),
 			},
 		},
 	}
@@ -74,9 +58,11 @@ func postSlack(article Article, rank int) error {
 // getArticleSectionBlock function
 func getArticleSectionBlock(article Article, rank int) slack.Block {
 	rankText := "rank: " + strconv.Itoa(rank)
-	titleText := "*" + article.Title + "*"
+	title := fmt.Sprintf(
+		"<%s|%s>", article.URL, article.Title,
+	)
 	categoryText := "category: " + article.Categories
-	text := rankText + "\n" + titleText + "\n" + categoryText + "\n" + article.URL
+	text := rankText + "\n" + title + "\n" + categoryText
 	textBlockObject := slack.NewTextBlockObject(
 		"mrkdwn",
 		text,
@@ -91,26 +77,3 @@ func getArticleSectionBlock(article Article, rank int) slack.Block {
 	)
 	return section
 }
-
-// get article data from api
-func getArticles() ([]Article, error) {
-	resp, err := http.Get(endpoint)
-
-	if err != nil {
-		return nil, err
-	}
-
-	defer resp.Body.Close()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return nil, err
-	}
-
-	var ranking Ranking
-	if err := json.Unmarshal(body, &ranking); err != nil {
-		return nil, err
-	}
-
-	return ranking.Entries, nil
-}