/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
** See the GNU Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/

package memcached

import (
	"fmt"

	"golang.zabbix.com/sdk/conf"
	"golang.zabbix.com/sdk/plugin"
)

type PluginOptions struct {
	// Timeout is the maximum time for waiting when a request has to be done. Default value equals the global timeout.
	Timeout int `conf:"optional,range=1:30"`

	// KeepAlive is a time to wait before unused connections will be closed.
	KeepAlive int `conf:"optional,range=60:900,default=300"`

	// Sessions stores pre-defined named sets of connections settings.
	Sessions map[string]conf.Session `conf:"optional"`

	// Default stores default connection parameter values from configuration file
	Default conf.Session `conf:"optional"`
}

// Configure implements the Configurator interface.
// Initializes configuration structures.
func (p *Plugin) Configure(global *plugin.GlobalOptions, options interface{}) {
	if err := conf.UnmarshalStrict(options, &p.options); err != nil {
		p.Errf("cannot unmarshal configuration options: %s", err)
	}

	if p.options.Timeout == 0 {
		p.options.Timeout = global.Timeout
	}
}

// Validate implements the Configurator interface.
// Returns an error if validation of a plugin's configuration is failed.
func (p *Plugin) Validate(options interface{}) error {
	var (
		opts PluginOptions
		err  error
	)

	err = conf.UnmarshalStrict(options, &opts)
	if err != nil {
		return err
	}

	for name, session := range opts.Sessions {
		if len(session.Password+session.User) > maxEntryLen {
			return fmt.Errorf("invalid parameters for session '%s': credentials cannot be longer "+
				"than %d characters", name, maxEntryLen)
		}
	}

	return err
}