feat: rss support (#343)

* feat: rss support

* chore: go mod tidy

* chore: change route group prefix

* Update server/server.go
Co-authored-by: boojack <stevenlgtm@gmail.com>

* Update server/rss.go
Co-authored-by: boojack <stevenlgtm@gmail.com>
Co-authored-by: boojack <stevenlgtm@gmail.com>

go.mod

@@ -27,6 +27,7 @@ require (
 
 require (
 	github.com/VictoriaMetrics/fastcache v1.10.0
+	github.com/gorilla/feeds v1.1.1
 	github.com/gorilla/securecookie v1.1.1
 	github.com/gorilla/sessions v1.2.1
 	github.com/labstack/echo-contrib v0.13.0
@@ -35,4 +36,5 @@ require (
 require (
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 )

go.sum

@@ -166,6 +166,8 @@ github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
 github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
+github.com/gorilla/feeds v1.1.1 h1:HwKXxqzcRNg9to+BbvJog4+f3s/xzvtZXICcQGutYfY=
+github.com/gorilla/feeds v1.1.1/go.mod h1:Nk0jZrvPFZX1OBe5NPiddPw7CfwF6Q9eqzaBbaightA=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
@@ -200,8 +202,11 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxv
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/labstack/echo-contrib v0.13.0 h1:bzSG0SpuZZd7BmJLvsWtPfU23W0Enh3K0tok3aENVKA=
 github.com/labstack/echo-contrib v0.13.0/go.mod h1:IF9+MJu22ADOZEHD+bAV67XMIO3vNXUy7Naz/ABPHEs=
@@ -238,6 +243,7 @@ github.com/onsi/gomega v1.16.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAl
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/openzipkin/zipkin-go v0.4.0/go.mod h1:4c3sLeE8xjNqehmF5RpAFLPLJxXscc0R4l6Zg0P1tTQ=
 github.com/pierrec/lz4 v2.6.1+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -268,6 +274,8 @@ github.com/rabbitmq/amqp091-go v1.1.0/go.mod h1:ogQDLSOACsLPsIq0NpbtiifNZi2YOz0V
 github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=

server/rss.go

+package server
+
+import (
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gorilla/feeds"
+	"github.com/labstack/echo/v4"
+	"github.com/usememos/memos/api"
+)
+
+func (s *Server) registerRSSRoutes(g *echo.Group) {
+	g.GET("/u/:id/rss.xml", func(c echo.Context) error {
+		ctx := c.Request().Context()
+
+		id, err := strconv.Atoi(c.Param("id"))
+		if err != nil {
+			return echo.NewHTTPError(http.StatusBadRequest, "User id is not a number").SetInternal(err)
+		}
+
+		normalStatus := api.Normal
+		memoFind := api.MemoFind{
+			CreatorID: &id,
+			RowStatus: &normalStatus,
+			VisibilityList: []api.Visibility{
+				api.Public,
+			},
+		}
+		memoList, err := s.Store.FindMemoList(ctx, &memoFind)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find memo list").SetInternal(err)
+		}
+
+		userFind := api.UserFind{
+			ID: &id,
+		}
+		user, err := s.Store.FindUser(ctx, &userFind)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find user").SetInternal(err)
+		}
+
+		baseURL := c.Scheme() + "://" + c.Request().Host
+
+		feed := &feeds.Feed{
+			Title:       "Memos",
+			Link:        &feeds.Link{Href: baseURL},
+			Description: "Memos",
+			Author:      &feeds.Author{Name: user.Name},
+			Created:     time.Now(),
+		}
+
+		feed.Items = make([]*feeds.Item, len(memoList))
+		for i, memo := range memoList {
+			feed.Items[i] = &feeds.Item{
+				Title:       memo.Content,
+				Link:        &feeds.Link{Href: baseURL + "/m/" + strconv.Itoa(memo.ID)},
+				Description: memo.Content,
+				Created:     time.Unix(memo.CreatedTs, 0),
+			}
+		}
+
+		rss, err := feed.ToRss()
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "Failed to generate rss").SetInternal(err)
+		}
+
+		rssPrefix := `<?xml version="1.0" encoding="UTF-8"?>`
+
+		return c.XMLBlob(http.StatusOK, []byte(rss[len(rssPrefix):]))
+	})
+}

server/server.go

@@ -56,6 +56,9 @@ func NewServer(profile *profile.Profile) *Server {
 		Profile: profile,
 	}
 
+	rootGroup := e.Group("")
+	s.registerRSSRoutes(rootGroup)
+
 	webhookGroup := e.Group("/h")
 	s.registerResourcePublicRoutes(webhookGroup)
 

web/vite.config.ts

@@ -20,6 +20,10 @@ export default defineConfig({
         target: "http://localhost:8080/",
         changeOrigin: true,
       },
+      "^/u/\\d*/rss.xml": {
+        target: "http://localhost:8080/",
+        changeOrigin: true,
+      },
     },
   },
 });