//
//  rhctl
//
//  Copyright (C) 2009-2016 Christian Pointner <equinox@helsinki.at>
//
//  This file is part of rhctl.
//
//  rhctl is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  any later version.
//
//  rhctl 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 General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with rhctl. If not, see <http://www.gnu.org/licenses/>.
//

package main

import (
	"os"
	"strings"
	"time"

	"github.com/naoina/toml"
)

type Config struct {
	Audioswitch struct {
		Device   string       `toml:"dev"`
		Baudrate Baudrate     `toml:"baud"`
		Timeout  Duration     `toml:"timeout"`
		Unit     SwitchUnitID `toml:"unit"`
		Ports    []struct {
			Name   string `toml:"name"`
			Number uint   `toml:"number"`
		}
	}

	Servers map[string]struct {
		ControlDevice      string   `toml:"ctrl_dev"`
		ControlBaudrate    Baudrate `toml:"ctrl_baud"`
		HeartbeatDevice    string   `toml:"heartbeat_dev"`
		HeartbeatBaudrate  Baudrate `toml:"heartbeat_baud"`
		HeartbeatTimeout   Duration `toml:"heartbeat_timeout"`
		HeartbeatThreshold uint     `toml:"heartbeat_threshold"`
	}

	Clients struct {
		Web struct {
			Address string `toml:"addr"`
		}
		Telnet struct {
			Address string `toml:"addr"`
		}
	}
}

type Duration struct {
	time.Duration
}

func (d *Duration) UnmarshalTOML(data []byte) (err error) {
	ds := strings.Trim(string(data), "\"")
	d.Duration, err = time.ParseDuration(ds)
	return
}

func ReadConfig(configfile string) (conf *Config, err error) {
	conf = &Config{}

	var f *os.File
	if f, err = os.Open(configfile); err != nil {
		return
	}
	defer f.Close()

	decoder := toml.NewDecoder(f)
	if err = decoder.Decode(conf); err != nil {
		return
	}
	return
}