Rename Riot to Element (#1874)

* s/riot/element/g

Signed-off-by: Till Faelligen <tfaelligen@gmail.com>

* fix formatting

Co-authored-by: kegsay <kegan@matrix.org>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>

cmd/dendrite-demo-pinecone/embed/embed_elementweb.go

@@ -0,0 +1,83 @@
+// +build elementweb
+
+package embed
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+
+	"github.com/gorilla/mux"
+	"github.com/tidwall/sjson"
+)
+
+// From within the Element Web directory:
+// go run github.com/mjibson/esc -o /path/to/dendrite/internal/embed/fs_elementweb.go -private -pkg embed .
+
+var cssFile = regexp.MustCompile("\\.css$")
+var jsFile = regexp.MustCompile("\\.js$")
+
+type mimeFixingHandler struct {
+	fs http.Handler
+}
+
+func (h mimeFixingHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ruri := r.RequestURI
+	fmt.Println(ruri)
+	switch {
+	case cssFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "text/css")
+	case jsFile.MatchString(ruri):
+		w.Header().Set("Content-Type", "application/javascript")
+	default:
+	}
+	h.fs.ServeHTTP(w, r)
+}
+
+func Embed(rootMux *mux.Router, listenPort int, serverName string) {
+	embeddedFS := _escFS(false)
+	embeddedServ := mimeFixingHandler{http.FileServer(embeddedFS)}
+
+	rootMux.NotFoundHandler = embeddedServ
+	rootMux.HandleFunc("/config.json", func(w http.ResponseWriter, r *http.Request) {
+		url := fmt.Sprintf("http://%s:%d", r.Header("Host"), listenPort)
+		configFile, err := embeddedFS.Open("/config.sample.json")
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't open the file: "+err.Error())
+			return
+		}
+		configFileInfo, err := configFile.Stat()
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't stat the file: "+err.Error())
+			return
+		}
+		buf := make([]byte, configFileInfo.Size())
+		n, err := configFile.Read(buf)
+		if err != nil {
+			w.WriteHeader(500)
+			io.WriteString(w, "Couldn't read the file: "+err.Error())
+			return
+		}
+		if int64(n) != configFileInfo.Size() {
+			w.WriteHeader(500)
+			io.WriteString(w, "The returned file size didn't match what we expected")
+			return
+		}
+		js, _ := sjson.SetBytes(buf, "default_server_config.m\\.homeserver.base_url", url)
+		js, _ = sjson.SetBytes(js, "default_server_config.m\\.homeserver.server_name", serverName)
+		js, _ = sjson.SetBytes(js, "brand", fmt.Sprintf("Element %s", serverName))
+		js, _ = sjson.SetBytes(js, "disable_guests", true)
+		js, _ = sjson.SetBytes(js, "disable_3pid_login", true)
+		js, _ = sjson.DeleteBytes(js, "welcomeUserId")
+		_, _ = w.Write(js)
+	})
+
+	fmt.Println("*-------------------------------*")
+	fmt.Println("| This build includes Element Web! |")
+	fmt.Println("*-------------------------------*")
+	fmt.Println("Point your browser to:", url)
+	fmt.Println()
+}