package syslog

import (
	"fmt"
	"net"
	"time"
)

// Message defines an RFC 3164 syslog message.
type Message struct {
	Time      time.Time // time the message was logged
	Source    net.Addr  // source address of the log message
	Facility            // facility tag (see type Facility)
	Severity            // severity tag (see type Severity)
	Timestamp time.Time // optional
	Hostname  string    // optional
	Tag       string    // message tag as defined in RFC 3164
	Content   string    // message content as defined in RFC 3164
	Tag1      string    // alternate message tag (white rune as separator)
	Content1  string    // alternate message content (white rune as separator)
}

// NetSrc only network part of Source as string (IP for UDP or Name for UDS)
func (m *Message) NetSrc() string {
	switch a := m.Source.(type) {
	case *net.UDPAddr:
		return a.IP.String()
	case *net.UnixAddr:
		return a.Name
	case *net.TCPAddr:
		return a.IP.String()
	}
	// Unknown type
	return m.Source.String()
}

// String returns the Message in a string format. This satisfies the fmt.Stringer
// interface.
func (m *Message) String() string {
	timeLayout := "2006-01-02 15:04:05"
	return fmt.Sprintf(
		"%s %s %s%s",
		m.Time.Format(timeLayout),
		m.Hostname,
		m.Tag,
		m.Content,
	)
}