chore: signout example

adhocore · adhocore · commit c7ee1727b58b · 2021-10-15T14:59:09.000+07:00
diff --git a/README.md b/README.md
@@ -149,6 +149,7 @@ when GOIC has new features.
 ### Signing out
 
 For signing out you need to manually invoke `g.SignOut()` from within http context. See the [API](#signout) below.
+There is also a working [example](./examples/all.go). Note that not all Providers support signing out.
 
 ---
 ## GOIC API
diff --git a/examples/all.go b/examples/all.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"net/http"
 	"os"
@@ -16,7 +17,10 @@ func main() {
 
 	g.UserCallback(func(t *goic.Token, u *goic.User, w http.ResponseWriter, r *http.Request) {
 		log.Printf("token: %v\nuser: %v\n", t, u)
-		_, _ = w.Write([]byte("All good, check backend console"))
+		uri := "https://localhost/auth/signout?p=" + t.Provider + "&t=" + t.AccessToken
+		uri = fmt.Sprintf(`, click <a href="%s">here</a> to signout (some provider may not support it)`, uri)
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		_, _ = w.Write([]byte("All good, check backend console" + uri))
 	})
 
 	addr := "localhost:443"
@@ -29,5 +33,15 @@ func main() {
 		log.Printf("  https://localhost/auth/o8/%s\n", v)
 	}
 	http.HandleFunc("/", g.MiddlewareFunc(handler))
+
+	// SignOut handler
+	http.HandleFunc("/auth/signout/", func(w http.ResponseWriter, r *http.Request) {
+		q := r.URL.Query()
+		tok := &goic.Token{Provider: q.Get("p"), AccessToken: q.Get("t")}
+		if err := g.SignOut(tok, "", w, r); err != nil {
+			http.Error(w, "can't signout: "+err.Error(), http.StatusInternalServerError)
+		}
+	})
+
 	log.Fatal(http.ListenAndServeTLS(addr, "server.crt", "server.key", nil))
 }
