#!/bin/bash
# Copyright (C) 2016 Ian Kelling

# This program 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 2 of the License, or
# (at your option) any later version.

# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

# my projects all have README or --help with a short single line
# description which I parse and put into the gitweb description.

# If it's a repo with just a single bash script or *-function script,
# then call it with --help, grap the 2nd line.
# else, parse the readme, find the first non blank, not starting with [#*],
# and use that line.

set -e; . /usr/local/lib/bash-bear; set +e

if [[ ! $1 ]]; then
  echo "need gitroot arg"
  exit 1
fi

gitroot=$1
cd $gitroot

shopt -s extglob
shopt -s nullglob

_git_desc_readme() {
  x=(README*)
  if [[ ! $x ]]; then
    echo "$1: error: no README at $PWD"
    exit 1
  fi
  while read -r line; do
    [[ $line ]] || continue
    if echo "$line" | grep "^ *[#*]" &>/dev/null; then
      continue
    fi
    echo "$line" > .git/description
    break
  done < README*
}

gitweb-descriptions() {
  for d in ${dirs[@]}; do
    echo $d
    cd $(readlink -f $d)/..
    [[ -e .git ]] || echo $d
    if [[ ${personalized[${d##*/}]} ]]; then
      echo "$pcategory" >.git/category
    fi
    if [[ ${unmaintained[${d##*/}]} ]]; then
      echo "$ucategory" >.git/category
    fi
    if [[ ${historicalarchive[${d##*/}]} ]]; then
      echo "$hcategory" >.git/category
    fi
    f=(!(LICENSE|COPYING|README|.git))
    if [[ ${#f[@]} == 1 && ! -d $f ]]; then
      if [[ ! -x $f ]]; then
        if [[ $f == *-function ]]; then
          ${f%-function} --help | sed -n '2p' > .git/description
        else
          _git_desc_readme
        fi
      else
        ./$f --help | sed -n '2p' > .git/description
      fi
    else
      _git_desc_readme
    fi
  done
}

tmp=(
  bashrc
  automated-distro-installer
  buildscripts
  distro-setup
  dot-emacs
  fai-basefiles
  ian-misc-bash
  iankelling.org
  keyboard.io-layout
)
declare -A personalized
for p in ${tmp[@]}; do personalized[$p]=true; done
pcategory="Personalized for my use. Useful as examples or to copy specific parts"

tmp=(
  bbdb-csv-import
  evhz
  )
ucategory="I don't use these anymore, they may or may not work, patches welcome"
declare -A unmaintained
for p in ${tmp[@]}; do unmaintained[$p]=true; done

tmp=(
  bash-template
  debian-auto-update
  fdroidcl-up
  mediawiki-setup
  mediawiki-librejs-patch
  mediawiki-sidebar-patch
)
hcategory="Historical archive. They don't work or have been superseded."
declare -A historicalarchive
for p in ${tmp[@]}; do historicalarchive[$p]=true; done

dirs=()
for d in $gitroot/*; do
  if [[ ! -L $d ]]; then
    continue
  fi
  dirs+=($d)
done

gitweb-descriptions "$@"