feat: parse markdown to html format in rss (#1683)

go.mod

@@ -17,6 +17,7 @@ require (
 	github.com/spf13/cobra v1.6.1
 	github.com/spf13/viper v1.15.0
 	github.com/stretchr/testify v1.8.1
+	github.com/yuin/goldmark v1.5.4
 	go.uber.org/zap v1.24.0
 	golang.org/x/crypto v0.1.0
 	golang.org/x/exp v0.0.0-20230111222715-75897c7a292a

go.sum

@@ -262,6 +262,8 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+github.com/yuin/goldmark v1.5.4 h1:2uY/xC0roWy8IBEGLgB1ywIoEJFGmRrX21YQcvGZzjU=
+github.com/yuin/goldmark v1.5.4/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=

server/rss.go

 package server
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"net/http"
@@ -12,6 +13,7 @@ import (
 	"github.com/labstack/echo/v4"
 	"github.com/usememos/memos/api"
 	"github.com/usememos/memos/common"
+	"github.com/yuin/goldmark"
 )
 
 func (s *Server) registerRSSRoutes(g *echo.Group) {
@@ -169,7 +171,13 @@ func getRSSItemDescription(content string) string {
 	} else {
 		description = content
 	}
-	return description
+
+	// TODO: use our `./plugin/gomark` parser to handle markdown-like content.
+	var buf bytes.Buffer
+	if err := goldmark.Convert([]byte(description), &buf); err != nil {
+		panic(err)
+	}
+	return buf.String()
 }
 
 func isTitleDefined(content string) bool {