#!/bin/sh


# This file is part of scripts.

# scripts 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, version 3.

# scripts 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 scripts.  If not, see <https://www.gnu.org/licenses/>.

# Original author: Maciej Barć <xgqt@riseup.net>
# Copyright (c) 2021, src_prepare group
# Licensed under the GNU GPL v3 License


# Exit if script is not sourced

case ${-}
in
    *i* )
        :
        ;;
    * )
        printf "%s\n" "Run: source ${0}"  \
               ">>> Exiting the shell"  \
               >> /dev/stderr
        exit 1
        ;;
esac


# Internal

_timest="$(date +%Y-%m-%d_%H:%M:%S || echo 'null')"
_tmpdir='/tmp/edev'
_toplevel="$(git rev-parse --show-toplevel || echo '/dev/null')"


# Mark time when user entered environment for given repository

if mkdir -p "${_tmpdir}"
then
    if cd "${_tmpdir}"
    then
        ln -fs "${_toplevel}" "${_timest}"
        cd - ||
            echo 'Bug?'
    fi
fi


# Set variables for ebuild development

ACCEPT_LICENSE='*'
export ACCEPT_LICENSE

if type lz4 >/dev/null
then
    BINPKG_COMPRESS='lz4'
    export BINPKG_COMPRESS
fi

if mkdir -p "${_tmpdir}/dist"
then
    DISTDIR="${_tmpdir}/dist"
    export DISTDIR
fi

GENTOO_MIRRORS=''
export GENTOO_MIRRORS

INSTALL_MASK=''
export INSTALL_MASK

if mkdir -p "${_tmpdir}/elog"
then
    PORTAGE_ELOG_CLASSES='warn error log'
    export PORTAGE_ELOG_CLASSES
    PORTAGE_ELOG_SYSTEM='save'
    export PORTAGE_ELOG_SYSTEM
    PORTAGE_LOGDIR="${_tmpdir}/elog"
    export PORTAGE_LOGDIR
fi

if [ -e "${_toplevel}/profiles/repo_name" ]
then
    PORTDIR="${_toplevel}"
    export PORTDIR
fi

PS1="(ebuild) ${PS1}"


# Some helpful aliases

alias cd-edev='cd ${_tmpdir}'
alias cd-repo='cd ${_toplevel}'
alias cd-dist='cd ${DISTDIR}'
alias cd-elog='cd ${PORTAGE_LOGDIR}'

alias clean-edev='rm -r ${_tmpdir}'
alias clean-dist='rm -r ${DISTDIR}'
alias clean-elog='rm -r ${PORTAGE_LOGDIR}'

alias ls-edev='ls -ahl ${_tmpdir}'
alias ls-repo='ls -ahl ${_toplevel}'
alias ls-dist='ls -ahl ${DISTDIR}'
alias ls-elog='ls -ahl ${PORTAGE_LOGDIR}'


clear
echo ">>> Entering Ebuild development environment"