let admins and users change usernames

server/ctrladmin/ctrl.go

@@ -267,7 +267,7 @@ func sessLogSave(s *sessions.Session, w http.ResponseWriter, r *http.Request) {
 // ## begin validation
 
 var (
-	errValiNoUsername        = errors.New("please enter the password twice")
+	errValiNoUsername        = errors.New("please enter a username")
 	errValiPasswordAllFields = errors.New("please enter the password twice")
 	errValiPasswordsNotSame  = errors.New("passwords entered were not the same")
 	errValiKeysAllFields     = errors.New("please enter the api key and secret")

server/ctrladmin/handlers.go

@@ -92,6 +92,24 @@ func (c *Controller) ServeHome(r *http.Request) *Response {
 	}
 }
 
+func (c *Controller) ServeChangeOwnUsername(r *http.Request) *Response {
+	return &Response{template: "change_own_username.tmpl"}
+}
+
+func (c *Controller) ServeChangeOwnUsernameDo(r *http.Request) *Response {
+	username := r.FormValue("username")
+	if err := validateUsername(username); err != nil {
+		return &Response{
+			redirect: r.Referer(),
+			flashW:   []string{err.Error()},
+		}
+	}
+	user := r.Context().Value(CtxUser).(*db.User)
+	user.Name = username
+	c.DB.Save(user)
+	return &Response{redirect: "/admin/home"}
+}
+
 func (c *Controller) ServeChangeOwnPassword(r *http.Request) *Response {
 	return &Response{template: "change_own_password.tmpl"}
 }
@@ -143,6 +161,44 @@ func (c *Controller) ServeUnlinkLastFMDo(r *http.Request) *Response {
 	return &Response{redirect: "/admin/home"}
 }
 
+func (c *Controller) ServeChangeUsername(r *http.Request) *Response {
+	username := r.URL.Query().Get("user")
+	if username == "" {
+		return &Response{
+			err:  "please provide a username",
+			code: 400,
+		}
+	}
+	user := c.DB.GetUserByName(username)
+	if user == nil {
+		return &Response{
+			err:  "couldn't find a user with that name",
+			code: 400,
+		}
+	}
+	data := &templateData{}
+	data.SelectedUser = user
+	return &Response{
+		template: "change_username.tmpl",
+		data:     data,
+	}
+}
+
+func (c *Controller) ServeChangeUsernameDo(r *http.Request) *Response {
+	username := r.URL.Query().Get("user")
+	usernameNew := r.FormValue("username")
+	if err := validateUsername(usernameNew); err != nil {
+		return &Response{
+			redirect: r.Referer(),
+			flashW:   []string{err.Error()},
+		}
+	}
+	user := c.DB.GetUserByName(username)
+	user.Name = usernameNew
+	c.DB.Save(user)
+	return &Response{redirect: "/admin/home"}
+}
+
 func (c *Controller) ServeChangePassword(r *http.Request) *Response {
 	username := r.URL.Query().Get("user")
 	if username == "" {

server/ctrladmin/middleware.go

@@ -8,11 +8,12 @@ import (
 	"github.com/gorilla/sessions"
 
 	"go.senan.xyz/gonic/server/db"
+	"go.senan.xyz/gonic/version"
 )
 
 func (c *Controller) WithSession(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		session, err := c.sessDB.Get(r, "gonic")
+		session, err := c.sessDB.Get(r, version.NAME)
 		if err != nil {
 			http.Error(w, fmt.Sprintf("error getting session: %s", err), 500)
 			return