optimized error status code responses

render.go

@@ -31,12 +31,6 @@ var (
 	errorBadRequest  = errors.New("password is empty")
 )
 
-func statusNote(code int) *Note {
-	n := &Note{Text: "# " + statuses[code]}
-	n.prepare()
-	return n
-}
-
 func (n *Note) prepare() {
 	fstLine := rexpNewLine.Split(n.Text, -1)[0]
 	maxLength := 25
@@ -60,7 +54,7 @@ func md2html(c echo.Context, name string) (*Note, int) {
 	if err != nil {
 		c.Logger().Errorf("couldn't open markdown page %s: %v", path, err)
 		code := http.StatusServiceUnavailable
-		return statusNote(code), code
+		return nil, code
 	}
 	c.Logger().Debugf("rendering markdown page %s", name)
 	return &Note{Title: name, Content: mdTmplHTML(mdContent)}, http.StatusOK

server.go

@@ -64,32 +64,39 @@ func main() {
 
 	e.GET("/TOS.md", func(c echo.Context) error {
 		n, code := md2html(c, "TOS")
+		if code != http.StatusOK {
+			c.String(code, statuses[code])
+		}
 		return c.Render(code, "Page", n)
 	})
 
 	e.GET("/:id", func(c echo.Context) error {
+		id := c.Param("id")
 		n, code := load(c, db)
+		c.Logger().Debugf("/%s requested; response code: %d", id, code)
+		if code != http.StatusOK {
+			return c.String(code, statuses[code])
+		}
 		defer incViews(n)
 		if fraudelent(n) {
 			n.Ads = mdTmplHTML(ads)
 		}
-		c.Logger().Debugf("/%s requested; response code: %d", n.ID, code)
 		return c.Render(code, "Note", n)
 	})
 
 	e.GET("/:id/export", func(c echo.Context) error {
 		id := c.Param("id")
 		n, code := load(c, db)
+		content := statuses[code]
+		if code == http.StatusOK {
 			defer incViews(n)
 			if fraudelent(n) {
 				code = http.StatusForbidden
-			n = statusNote(code)
+			}
+			content = n.Text
 		}
 		c.Logger().Debugf("/%s/export requested; response code: %d", id, code)
-		if code == http.StatusOK {
-			return c.String(code, n.Text)
-		}
-		return c.Render(code, "Note", n)
+		return c.String(code, content)
 	})
 
 	e.GET("/:id/stats", func(c echo.Context) error {
@@ -171,9 +178,9 @@ func main() {
 			return c.JSON(http.StatusCreated, postResp{true, n.ID})
 		} else if text == "" {
 			c.Logger().Infof("note %s deleted", n.ID)
-			return c.JSON(http.StatusOK, postResp{true, n.ID})
-		}
+		} else {
 			c.Logger().Infof("note %s updated", n.ID)
+		}
 		return c.JSON(http.StatusOK, postResp{true, n.ID})
 	})
 

storage.go

@@ -123,7 +123,7 @@ func load(c echo.Context, db *sql.DB) (*Note, int) {
 	q := c.Param("id")
 	if !rexpNoteID.Match([]byte(q)) {
 		code := http.StatusNotFound
-		return statusNote(code), code
+		return nil, code
 	}
 	c.Logger().Debugf("loading note %s", q)
 	stmt, _ := db.Prepare("select * from notes where id = ?")
@@ -135,7 +135,7 @@ func load(c echo.Context, db *sql.DB) (*Note, int) {
 	var views int
 	if err := row.Scan(&id, &text, &published, &editedVal, &password, &views); err != nil {
 		code := http.StatusNotFound
-		return statusNote(code), code
+		return nil, code
 	}
 	n := &Note{
 		ID:        id,