package ircd

import (
	"errors"
	"strings"
)

type Message struct {
	command string
	params  []string
}

func ParseIRCMessage(raw string) (*Message, error) {
	m := Message{}

	raw = strings.TrimSpace(raw)
	parts := []string{}

	for {
		if len(raw) == 0 {
			break
		} else if strings.HasPrefix(raw, ":") {
			parts = append(parts, raw[1:])
			break
		} else {
			p := strings.SplitN(raw, " ", 2)
			parts = append(parts, p[0])

			if len(p) == 1 {
				raw = ""
			} else {
				raw = strings.TrimSpace(p[1])
			}
		}
	}

	if len(parts) > 0 {
		m.command = parts[0]
		m.params = parts[1:]
		return &m, nil
	} else {
		return nil, errors.New("Invalid IRC message")
	}
}