add comment preview

README.md

@@ -150,6 +150,8 @@ type Locator struct {
 }
 ```
 
+- `POST /api/v1/preview` - preview comment in html. Body is `Comment` to render
+
 - `GET /api/v1/find?site=site-id&url=post-url&sort=fld&format=tree` - find all comments for given post
 
 This is the primary call used by UI to show comments for given post. It can return comments in two formats - `plain` and `tree`.

app/rest/api/rest.go

@@ -84,6 +84,7 @@ func (s *Rest) Run(port int) {
 		rapi.Get("/count", s.countCtrl)
 		rapi.Get("/list", s.listCtrl)
 		rapi.Get("/config", s.configCtrl)
+		rapi.Post("/preview", s.previewCommentCtrl)
 
 		// protected routes, require auth
 		rapi.With(s.Authenticator.Auth(true)).Group(func(rauth chi.Router) {
@@ -169,6 +170,16 @@ func (s *Rest) createCommentCtrl(w http.ResponseWriter, r *http.Request) {
 	render.JSON(w, r, JSON{"id": id, "locator": comment.Locator})
 }
 
+func (s *Rest) previewCommentCtrl(w http.ResponseWriter, r *http.Request) {
+	comment := store.Comment{}
+	if err := render.DecodeJSON(r.Body, &comment); err != nil {
+		rest.SendErrorJSON(w, r, http.StatusBadRequest, err, "can't bind comment")
+		return
+	}
+	comment.Text = string(blackfriday.Run([]byte(comment.Text), blackfriday.WithNoExtensions()))
+	render.HTML(w, r, comment.Text)
+}
+
 // PUT /comment/{id}?site=siteID&url=post-url - update comment
 func (s *Rest) updateCommentCtrl(w http.ResponseWriter, r *http.Request) {
 

remark.rest

@@ -20,6 +20,18 @@ Content-Type: application/json
 	}
 }
 
+### preview comment
+POST {{host}}/api/v1/preview
+Content-Type: application/json
+
+{
+	"text": "comment *blah* http://radio-t.com",
+	"locator": {
+		"url": "https://radio-t.com/blah1",
+		"site": "remark"
+	}
+}
+
 ### update comment
 PUT {{host}}/api/v1/comment/7b88d7a91353ab206cb63cdca18fb26bcb30205b?site=remark&url=https://radio-t.com/blah1
 Content-Type: application/json