Add get posts by tag

packages/blog/blog.go

@@ -313,6 +313,53 @@ func getBlogPostById(w http.ResponseWriter, r *http.Request) {
 }
 
 func getBlogPostsByTag(w http.ResponseWriter, r *http.Request) {
+	returnError := ReturnError{}
+	referenceID := &ReferenceID{}
+	err := json.NewDecoder(r.Body).Decode(referenceID)
+	// hardcode 9001 for cool kid points
+	if err != nil {
+		referenceID.LastID = 9001
+	}
+	search_id := referenceID.LastID
+	// if someone is lame and sends up a negative number...
+	if search_id < 1 {
+		search_id = 9001
+	}
+	tag := chi.URLParam(r, "tag")
+	search := `
+    SELECT posts.id, posts.title, posts.slug, posts.author, posts.content, posts.time_published, posts.modified, posts.last_modified
+    FROM posts
+    INNER JOIN tags on posts .id = tags.article_id
+    WHERE posts.id < $1
+    AND tags.tag = $2
+    ORDER BY id DESC
+    FETCH FIRST 10 ROWS ONLY
+    `
+	rows, err := DB.Query(search, search_id, tag)
+	if err != nil {
+		returnError.Message = "something is super broken..."
+		w.WriteHeader(http.StatusInternalServerError)
+		render.JSON(w, r, returnError)
+		fmt.Println(err)
+		return
+	}
+	defer rows.Close()
+	post := BlogPost{}
+	posts := make(BlogPosts, 0)
+	for rows.Next() {
+		if err := rows.Scan(&post.ID, &post.Title, &post.Slug, &post.Author, &post.Content, &post.TimePublished, &post.Modified, &post.TimeModified); err != nil {
+		}
+		posts = append(posts, post)
+	}
+	if err := rows.Err(); err != nil {
+		returnError.Message = "something is super broken..."
+		w.WriteHeader(http.StatusInternalServerError)
+		render.JSON(w, r, returnError)
+		fmt.Println(err)
+		return
+	}
+	w.WriteHeader(http.StatusOK)
+	render.JSON(w, r, posts)
 	return
 }