all database switched to repository model. some other fixes and features

plugins/admin.go

@@ -13,8 +13,9 @@ func RegisterAdmin(b *laniakea.Bot) {
 	b.AddPlugins(p.Build())
 }
 
-func uploadPhoto(msgContext *laniakea.MsgContext, _ *laniakea.DatabaseContext) {
-	user, err := psql.GetOrCreateUser(msgContext.FromID, msgContext.Msg.From.FirstName)
+func uploadPhoto(msgContext *laniakea.MsgContext, db *laniakea.DatabaseContext) {
+	rep := psql.NewUserRepository(db)
+	user, err := rep.GetOrCreate(msgContext.FromID, msgContext.Msg.From.FirstName)
 	if err != nil {
 		msgContext.Error(err)
 		return