Added: downloading and returning wikipedia articles

api/article/request.go

@@ -0,0 +1,16 @@
+package article
+
+import "scrap/api/httpio"
+
+type ArticleQueryRequest struct {
+	Title string `json:"title"`
+}
+
+func (a ArticleQueryRequest) Validate() *httpio.HTTPError {
+	titleLength := len(a.Title)
+	if titleLength < 1 || titleLength > 255 {
+		return &ErrHttpArticleTitleInvalidLength
+	}
+
+	return nil
+}