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package main

import (
	"fmt"
	"log"
	"strconv"
	"strings"

	"dim13.org/rfc"
	irc "github.com/fluffle/goirc/client"
)

var rfcMap = make(map[int]rfc.Entry)

type RFC struct{ Command }

func (_ RFC) Timeout() bool       { return false }
func (_ RFC) WithArgs(n int) bool { return n == 2 }
func (_ RFC) Handle(conn *irc.Conn, line *irc.Line) {
	if q := strings.Fields(line.Text()); len(q) == 2 {
		if id, err := strconv.Atoi(q[1]); err != nil {
			conn.Privmsg(line.Target(), err.Error())
		} else {
			if entry, ok := rfcMap[id]; ok {
				s := fmt.Sprint(entry)
				conn.Privmsg(line.Target(), s)
			} else {
				conn.Privmsg(line.Target(), "not found")
			}
		}
	}
}

func init() {
	fd, err := rfc.Open()
	if err != nil {
		log.Fatal(err)
	}
	entries, err := rfc.Decode(fd)
	if err != nil {
		log.Fatal(err)
	}
	for _, e := range entries {
		id := e.ID()
		rfcMap[id] = e
	}
	Register("rfc", &RFC{
		Command{
			Help: "Perform RFC lookup",
		},
	})
}