#!/bin/bash

dir='/srv/arch-mirror/arch/arch/archlinux32/irc-logs/#archlinux-ports/'

declare -A colors

sed '
  s/([^()]*@[^()]*) //
' | \
sed '
  :a
    $!N
    s/\n\s\+ | / /
    ta
  P
  D
' | \
while read -r a b dummy c; do
  if [ "${dummy}" != '|' ]; then
    >&2 printf 'wrong dummy "%s"\n' "${dummy}"
    exit 42
  fi
  time=$(
    date -d@$(($(date -d"${a}" +%s)+3600*6)) +%T
  )
  if [ "${b}" = '-->' ]; then
    name="${c%% *}"
    channel="${c##* }"
    printf '<a href="#%s" name="%s" class="time">[%s]</a> -!- <span class="join">%s</span> has joined %s\n<br />\n' \
      "${time}"  "${time}" "${time}" "${name}" "${channel}"
    continue
  fi
  if [ "${b}" = '<--' ]; then
    name="${c%% *}"
    reason="${c##* (}"
    reason="${reason%)*}"
    printf '<a href="#%s" name="%s" class="time">[%s]</a> -!- <span class="quit">%s</span> has quit [%s]\n<br />\n' \
      "${time}"  "${time}" "${time}" "${name}" "${reason}"
    continue
  fi
  if [ -z "${colors["${b}"]}" ]; then
    colors["${b}"]=$(
      find "${dir}" -type f -name '*-*-*.html' -exec \
        grep -h "style=\"color:#[0-9a-f]\{6\}\">&lt;${b}&gt;" {} \; | \
        sed 's@.* style="color:#\([0-9a-f]\{6\}\)">&lt;.*@\1@' | \
        sort -u
    )
  fi
  if [ -z "${colors["${b}"]}" ]; then
    >&2 printf 'unkown user "%s"\n' "${b}"
    exit 42
  fi
  if [ $(echo "${colors["${b}"]}" | wc -l) -ne 1 ]; then
    >&2 printf 'user "%s" has multiple colors\n' "${b}"
    exit 42
  fi
  printf '<a href="#%s" name="%s" class="time">[%s]</a> <span class="person" style="color:#%s">&lt;%s&gt;</span> %s\n<br />\n' \
    "${time}" "${time}" "${time}" "${colors["${b}"]}" "${b}" "${c}"
done