#!/bin/zsh
#
# func/vcsh
#
# set the context for vcs-home operations
#
# Copyright © 1994–2008 martin f. krafft <madduck@madduck.net>
# Released under the terms of the Artistic Licence 2.0
#
# Source repository: git://git.madduck.net/etc/zsh.git
#

local FGIT_BASE="$HOME/.fgits"

if [[ "$1" == '-l' ]]
then
   for i in $FGIT_BASE/*.git
   do
      i="${i#$FGIT_BASE/}"
      echo "${i%.git}"
   done
   return 0
elif [[ "$1" == '-c' ]]
then
   shift

   if [[ -z "$1" ]]
   then
      echo "E: no repository name given" >&2
      return 2
   fi
   if [[ -e "$FGIT_BASE/${1}.git" ]]
   then
      echo "E: repository '$1' still exists" >&2
      return 2
   fi

   git init --bare "$FGIT_BASE/${1}.git"
   cd "$FGIT_BASE/${1}.git"
   git config core.bare false
   git config core.worktree ../../
   git config core.excludesfile "$FGIT_BASE/${1}.ignore"
   cd -

   [[ -e "$FGIT_BASE/${1}.ignore" ]] || echo "/*" > "$FGIT_BASE/${1}.ignore"
fi
if [[ "${1:---help}" == '--help' ]] || [[ $# -gt 1 ]]
then
   echo "usage: ${0##*/} reponame" >&2
   echo "usage: ${0##*/} -l" >&2
   echo "usage: ${0##*/} -c reponame" >&2
   [ "$1" = '--help' ]
   return $?
fi

if [ ! -d "$FGIT_BASE/${1}.git" ]; then
  echo E: no repository found for "$1" >&2
  return 2
fi

old_GIT_DIR="${GIT_DIR:-}"
old_GIT_WORK_TREE="${GIT_WORK_TREE:-}"

export GIT_DIR="$FGIT_BASE/${1}.git"
export GIT_WORK_TREE="$GIT_DIR/$(git config --get core.worktree)"

PS1="%S{${0##*/}:$1}%s$PS1" $SHELL -i || :

GIT_DIR="$old_GIT_DIR"
[ -z "$GIT_DIR" ] && unset GIT_DIR
GIT_WORK_TREE="$old_GIT_WORK_TREE"
[ -z "$GIT_WORK_TREE" ] && unset GIT_WORK_TREE