Add clickable Markdown checkboxes (#182)

internal/web/gist.go

@@ -787,3 +787,39 @@ func forks(ctx echo.Context) error {
 	setData(ctx, "revision", "HEAD")
 	return html(ctx, "forks.html")
 }
+
+func checkbox(ctx echo.Context) error {
+	filename := ctx.FormValue("file")
+	checkboxNb := ctx.FormValue("checkbox")
+
+	i, err := strconv.Atoi(checkboxNb)
+	if err != nil {
+		return errorRes(400, "Invalid number", nil)
+	}
+
+	gist := getData(ctx, "gist").(*db.Gist)
+	file, err := gist.File("HEAD", filename, false)
+	if err != nil {
+		return errorRes(500, "Error getting file content", err)
+	} else if file == nil {
+		return notFound("File not found")
+	}
+
+	markdown, err := render.Checkbox(file.Content, i)
+	if err != nil {
+		return errorRes(500, "Error checking checkbox", err)
+	}
+
+	if err = gist.AddAndCommitFile(&db.FileDTO{
+		Filename: filename,
+		Content:  markdown,
+	}); err != nil {
+		return errorRes(500, "Error adding and committing files", err)
+	}
+
+	if err = gist.UpdatePreviewAndCount(); err != nil {
+		return errorRes(500, "Error updating the gist", err)
+	}
+
+	return plainText(ctx, 200, "ok")
+}

internal/web/server.go

@@ -265,6 +265,7 @@ func NewServer(isDev bool) *Server {
 			g3.GET("/likes", likes)
 			g3.POST("/fork", fork, logged)
 			g3.GET("/forks", forks)
+			g3.PUT("/checkbox", checkbox, logged, writePermission)
 		}
 	}