Add a way to get info about clicks

cmd/calls/articles.go

@@ -10,6 +10,27 @@ import (
 	b "streifling.com/jason/cpolis/cmd/backend"
 )
 
+func incrementClicks(db *b.DB, a *b.Article) error {
+	a.Clicks++
+	if err := db.UpdateAttributes(&b.Attribute{Table: "articles", ID: a.ID, AttName: "clicks", Value: a.Clicks}); err != nil {
+		return fmt.Errorf("error updating click attribute of article %v: %v", a.ID, err)
+	}
+
+	if a.IsInIssue {
+		issue, err := db.GetArticle(a.IssueID)
+		if err != nil {
+			return fmt.Errorf("error getting issue %v: %v", a.IssueID, err)
+		}
+
+		issue.Clicks++
+		if err := db.UpdateAttributes(&b.Attribute{Table: "articles", ID: issue.ID, AttName: "clicks", Value: issue.Clicks}); err != nil {
+			return fmt.Errorf("error updating click attribute of issue %v: %v", issue.ID, err)
+		}
+	}
+
+	return nil
+}
+
 func ServeArticle(c *b.Config, db *b.DB) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		if !tokenIsVerified(w, r, c) {
@@ -50,8 +71,7 @@ func ServeArticle(c *b.Config, db *b.DB) http.HandlerFunc {
 			return
 		}
 
-		article.Clicks++
+		if err = incrementClicks(db, article); err != nil {
-		if err = db.UpdateAttributes(&b.Attribute{Table: "articles", ID: article.ID, AttName: "clicks", Value: article.Clicks}); err != nil {
 			log.Println(err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
@@ -64,3 +84,28 @@ func ServeArticle(c *b.Config, db *b.DB) http.HandlerFunc {
 		}
 	}
 }
+
+func ServeClicks(db *b.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		idString := r.PathValue("id")
+		id, err := strconv.ParseInt(idString, 10, 64)
+		if err != nil {
+			log.Println(err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		article, err := db.GetArticle(id)
+		if err != nil {
+			log.Println(err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		if _, err = fmt.Fprint(w, article.Clicks); err != nil {
+			log.Println(err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+}

cmd/main.go

@@ -65,6 +65,7 @@ func main() {
 	mux.HandleFunc("GET /article/review-rejected/{id}", f.ReviewRejectedArticle(config, db, store))
 	mux.HandleFunc("GET /article/review-unpublished/{id}", f.ReviewArticle(config, db, store, "publish", "Artikel veröffentlichen", "Veröffentlichen"))
 	mux.HandleFunc("GET /article/serve/{id}", c.ServeArticle(config, db))
+	mux.HandleFunc("GET /article/serve/{id}/clicks", c.ServeClicks(db))
 	mux.HandleFunc("GET /article/write", f.WriteArticle(config, db, store))
 	mux.HandleFunc("GET /atom/serve", c.ServeAtomFeed(config))
 	mux.HandleFunc("GET /hub", f.ShowHub(config, db, store))