func (m *Mem) FindPluginByNameAndService(pluginName string, service account.Service) (account.Plugin, error) {
	if plugin, ok := m.Plugins[service.Subdomain][pluginName]; !ok {
		return account.Plugin{}, errors.NewNotFoundError(errors.ErrPluginNotFound)
	} else {
		return plugin, nil
	}
}

func (m *Mem) FindHookByName(name string) (account.Hook, error) {
	if hook, ok := m.Hooks[name]; !ok {
		return account.Hook{}, errors.NewNotFoundError(errors.ErrHookNotFound)
	} else {
		return hook, nil
	}
}

func (m *Mem) FindUserByEmail(email string) (account.User, error) {
	if user, ok := m.Users[email]; !ok {
		return account.User{}, errors.NewNotFoundError(errors.ErrUserNotFound)
	} else {
		return user, nil
	}
}

func (m *Mem) FindTeamByAlias(alias string) (account.Team, error) {
	if team, ok := m.Teams[alias]; !ok {
		return account.Team{}, errors.NewNotFoundError(errors.ErrTeamNotFound)
	} else {
		return team, nil
	}
}

func (m *Mem) FindAppByClientId(id string) (account.App, error) {
	if app, ok := m.Apps[id]; !ok {
		return account.App{}, errors.NewNotFoundError(errors.ErrAppNotFound)
	} else {
		return app, nil
	}
}

func (m *Mem) FindServiceBySubdomain(subdomain string) (account.Service, error) {
	if service, ok := m.Services[subdomain]; !ok {
		return account.Service{}, errors.NewNotFoundError(errors.ErrServiceNotFound)
	} else {
		return service, nil
	}
}

// Updates the password for an existing account.
func (user *User) ChangePassword() error {
	if !user.Exists() {
		return errors.NewNotFoundError(errors.ErrUserNotFound)
	}

	user.hashPassword()
	return store.UpsertUser(*user)
}

func (m *Mem) DeleteService(s account.Service) error {
	if _, ok := m.Services[s.Subdomain]; !ok {
		return errors.NewNotFoundError(errors.ErrServiceNotFound)
	}

	delete(m.Services, s.Subdomain)
	return nil
}

func (m *Mem) DeletePluginsByService(service account.Service) error {
	if _, ok := m.Plugins[service.Subdomain]; !ok {
		return errors.NewNotFoundError(errors.ErrPluginNotFound)
	}

	delete(m.Plugins, service.Subdomain)
	return nil
}

func (m *Mem) DeleteUser(u account.User) error {
	if _, ok := m.Users[u.Email]; !ok {
		return errors.NewNotFoundError(errors.ErrUserNotFound)
	}

	delete(m.Users, u.Email)
	return nil
}

func (m *Mem) DeleteHook(w account.Hook) error {
	if _, ok := m.Hooks[w.Name]; !ok {
		return errors.NewNotFoundError(errors.ErrHookNotFound)
	}

	delete(m.Hooks, w.Name)
	return nil
}

func (m *Mem) DeleteTeam(t account.Team) error {
	if _, ok := m.Teams[t.Alias]; !ok {
		return errors.NewNotFoundError(errors.ErrTeamNotFound)
	}

	delete(m.Teams, t.Alias)
	return nil
}

func (m *Mem) DeleteApp(a account.App) error {
	if _, ok := m.Apps[a.ClientId]; !ok {
		return errors.NewNotFoundError(errors.ErrAppNotFound)
	}

	delete(m.Apps, a.ClientId)
	return nil
}

func (m *Mem) DeletePlugin(pc account.Plugin) error {
	if _, ok := m.Plugins[pc.Service][pc.Name]; !ok {
		return errors.NewNotFoundError(errors.ErrPluginNotFound)
	}

	delete(m.Plugins, pc.Name)
	return nil
}

func (m *Mem) DeleteHooksByTeam(team account.Team) error {
	found := false
	for _, wh := range m.Hooks {
		if wh.Team == team.Alias {
			delete(m.Hooks, wh.Name)
			found = true
		}
	}
	if !found {
		return errors.NewNotFoundError(errors.ErrTeamNotFound)
	}
	return nil
}

func handleError(err error) error {
	switch erro := err.(type) {
	case *etcd.EtcdError:
		if erro.ErrorCode == 100 {
			return errors.NewNotFoundError(erro)
		}

		if erro.ErrorCode == 105 {
			return errors.NewDuplicateEntryError(erro)
		}
	}

	return err
}

func (app *App) Update() error {
	if err := app.valid(); err != nil {
		Logger.Info("Failed to create an app with invalid data: %+v.", app)
		return err
	}

	if !app.Exists() {
		Logger.Info("Failed to update a not-found app: %+v.", app)
		return errors.NewNotFoundError(errors.ErrAppNotFound)
	}

	err := store.UpsertApp(*app)
	Logger.Info("app.Update: %+v. Err: %s.", app, err)
	return err
}

func (m *Mongore) DeleteHooksByTeam(team account.Team) error {
	var strg Storage
	strg.Storage = m.openSession()
	defer strg.Close()

	err := strg.Hooks().Remove(bson.M{"team": team.Alias})

	if err == mgo.ErrNotFound {
		return errors.NewNotFoundError(errors.ErrHookNotFound)
	}
	if err != nil {
		Logger.Warn(err.Error())
	}

	return err
}

func (m *Mongore) DeleteTeam(t account.Team) error {
	var strg Storage
	strg.Storage = m.openSession()
	defer strg.Close()

	err := strg.Teams().Remove(t)

	if err == mgo.ErrNotFound {
		return errors.NewNotFoundError(errors.ErrTeamNotFound)
	}
	if err != nil {
		Logger.Warn(err.Error())
	}

	return err
}

func (m *Mongore) DeleteService(s account.Service) error {
	var strg Storage
	strg.Storage = m.openSession()
	defer strg.Close()

	err := strg.Services().Remove(s)

	if err == mgo.ErrNotFound {
		return errors.NewNotFoundError(errors.ErrServiceNotFound)
	}
	if err != nil {
		Logger.Warn(err.Error())
	}

	return err
}