func bySession(router *wcg.Router, configure func()) {
fbconfig := facebook.NewAuthConfig("dummy", "dumyy", "")
fbconfig.RedirectURL = "/login/facebook/callback"
fbconfig.ContextFactory = func(res *wcg.Response, req *wcg.Request) context.Context {
return gae.NewContext(req)
}
fbconfig.UnauthorizedHandler = wcg.AnonymousHandler(func(res *wcg.Response, req *wcg.Request) {
res.TemplatesWithStatus(401, nil, "permrejected.html", "header.html", "footer.html")
})
fbconfig.AuthorizedHandler = wcg.AnonymousHandler(func(res *wcg.Response, req *wcg.Request) {
ref, _ := req.Session.Get("LoginRef")
if ref != "" && strings.HasPrefix(ref, "/") {
res.Redirect(wcg.AbsoluteURL(req, ref), http.StatusFound)
} else {
res.Redirect("/", http.StatusFound)
}
})
fbconfig.InvalidatedHandler = wcg.AnonymousHandler(func(res *wcg.Response, req *wcg.Request) {
req.Logger.Debugf("Guest user access.")
})
fbconfig.Scopes = []string{}
fbauth, fbcallback, fbvalidates, fblogout := middleware.OAuth2(fbconfig)
// set routes
router.Before(wcg.NewNamedHandler("facebook.validate", func(res *wcg.Response, req *wcg.Request) {
if !request.ByGuest(req) { // already authenticated
return
}
if req.Session == nil {
return
}
// Check the fbconfig from ServerConfig
fbapp := configs.GetMultiValues(
req,
"facebook_app_id",
"facebook_app_secret",
"facebook_page_id",
)
if fbapp[0] != "" && fbapp[1] != "" {
fbconfig.ClientID = fbapp[0]
fbconfig.ClientSecret = fbapp[1]
fbvalidates.Process(res, req)
}
}))
router.GET("/login/facebook", wcg.NewNamedHandler("facebook.login.auth", func(res *wcg.Response, req *wcg.Request) {
if !isFBConfigured(fbconfig) {
return
}
req.Session.Set("LoginRef", req.Query("ref"))
fbauth.Process(res, req)
}))
router.GET("/login/facebook/callback", wcg.NewNamedHandler("facebook.login.callback", func(res *wcg.Response, req *wcg.Request) {
if !isFBConfigured(fbconfig) {
return
}
fbcallback.Process(res, req)
}))
router.POST("/logout/facebook", wcg.NewNamedHandler("facebook.logout", func(res *wcg.Response, req *wcg.Request) {
if !isFBConfigured(fbconfig) {
return
}
fblogout.Process(res, req)
res.Redirect("/", http.StatusFound)
}))
configure()
}
