#!/bin/bash
#   This file is part of nexdatas - Tango Server for NeXus data writer
#
#    Copyright (C) 2017-2017 DESY, Jan Kotanski <jkotan@mail.desy.de>
#
#    nexdatas 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 3 of the License, or
#    (at your option) any later version.
#
#    nexdatas 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 nexdatas.  If not, see <http://www.gnu.org/licenses/>.
#
set -e
PIDPVERSION="1.5.2"
for i in "${@:1}"
do
    if [[ $i == -* ]] ; then
	case $i in
	    -h*|--help*)
		HELP=YES
		;;
	    -e=*|--email=*)
		EMAIL="${i#*=}"
		;;
	    -f=*|--fullname=*)
		FULLNAME="${i#*=}"
		;;
	    -v=*|--srcversion=*)
		export SRCVERSION="${i#*=}"
		;;
	    -ne|--nodebenv)
		export NODEBENV=YES
		;;
	    -nb|--nonewbash)
		export NONEWBASH=YES
		;;
	    -nd|--nodhmake)
		export NODHMAKE=YES
		;;
	    -ns|--nosignature)
		export NOSIGNATURE=YES
		;;
	    -c|--continue)
		export CONTINUE=YES
		;;
	    -r=*|--release=*)
		export RELEASE="${i#*=}"
		;;
	    *)
		# unknown option
		;;
	esac
    else
	if [[ -z $PACKAGE ]] || [[ ! -z $TARBALL ]] ; then
	    export PACKAGE=$i
	else    
	    export TARBALL=$i
	fi
    fi
done

DEFRELEASE=jessie

if [[ ! -z $HELP ]] && [[ -z $PACKAGE ]] ; then
    echo "Error: PACKAGE variable is not defined"
fi
if [[ ! -z $HELP ]] && [[ -z $TARBALL ]] ; then
    echo "Error: TARBALL variable is not defined"
fi
if [[ ! -z $HELP ]] || [[ -z $PACKAGE ]] || [[ -z $TARBALL ]] ; then
    echo "pidpbuild version $PIDPVERSION"
    echo ""
    echo "usage: pidpcreate <DEB-PACKAGE-NAME> <TARBALL> [-v=<SRCVERSION>] [-ns|--no-signature]"
    echo "                 [-e=<DEBEMAIL>] [-f=<DEBFULLNAME>] [-ne|--nodebenv]"
    echo "                 [-c|--continue] [-h|--help]"
    echo ""
    echo "create a new gbp package repository"
    echo ""
    echo "possible arguments:"
    echo "  DEB-PACKAGE-NAME      debian package name (mandatory)"
    echo "  TARBALL               source tarball, i.e. *.tar.gz (optional)"
    echo ""
    echo "optional arguments:"
    echo "  -h, --help            show this help message and exit"
    echo "  -v=, --srcversion=    the tarball source version, i.e. 1.1.2"
    echo "  -ns, --nosiganture    don't sign the package"
    echo "  -ne, --nodebenv       don't set default DEBFULLNAME and DEBEMAIL"
    echo "  -nb, --nonewbash      don't open a new bash in the package directory"
    echo "  -nd, --nodhmake       don't use dhmake"
    echo "  -f=, --fullname=      debian fullname of the gpg signature,"
    echo "                          i.e. DEBFULLNAME"
    echo "  -e=, --email=         debian email of the gpg signature,"
    echo "                          i.e.  DEBEMAIL"
    echo "  -r=, --release=       debian release flavour, e.g. stretch, jessie, wheezy"
    echo ""
    echo "examples:"
    echo "  pidpcreate python-nxstools-extras-p09 ../nexdatas.extrasp09-1.2.4.tar.gz"
    echo "  pidpcreate python-nxstools-extras-p09 ../nexdatas.extrasp09.tar.gz -v=1.3.2"
    echo "  pidpcreate --continue"
    echo ""
else
    if [ -z $NODEBENV ] ; then
	if [[ -z $DEBEMAIL ]] ; then
	    export DEBEMAIL="fsec-devel@desy.de"
	fi
	if [[ -z $DEBFULLNAME ]] ; then
	    export DEBFULLNAME="FS-EC DESY Group"
	fi
    fi
    if [[ ! -z $FULLNAME ]] ; then
	export DEBFULLNAME=$FULLNAME
    fi
    if [[ ! -z $EMAIL ]] ; then
	export DEBEMAIL=$EMAIL
    fi
    if [[ -z $RELEASE ]] ; then
	export RELEASE=$DEFRELEASE
    fi
    echo ""
    echo "  PACKAGE=\"$PACKAGE\""
    echo "  TARBALL=\"$TARBALL\""
    echo ""
    echo "  DEBFULLNAME=\"$DEBFULLNAME\""
    echo "  DEBEMAIL=\"$DEBEMAIL\""
    echo ""

    mkdir $PACKAGE
    cd $PACKAGE
    git init .
    git config core.autocrlf false
    git checkout --orphan upstream/$RELEASE
    git commit --allow-empty -m "Initial upstream branch."
    git branch debian/$RELEASE
    git checkout -f debian/$RELEASE

    if [[ -z $SRCVERSION ]] ; then
	TB=${TARBALL::-7}
	VER=${TB##*-}
	SRCVERSION=${VER##*_}
    fi
    echo ""
    echo "  SRCVERSION=\"$SRCVERSION\""
    echo ""
    if ! [[ $TARBALL == /* ]] ; then
	TARBALL=../$TARBALL
    fi

    gbp import-orig --pristine-tar --debian-branch=debian/$RELEASE \
	--upstream-branch=upstream/$RELEASE -u $SRCVERSION \
	--upstream-tag=upstream/$RELEASE/$SRCVERSION $TARBALL <<< $"$PACKAGE"
    if [[ -z $NODHMAKE ]] ; then
	dh_make -p ${PACKAGE}_${SRCVERSION}
    fi	

    echo "[DEFAULT]" > debian/gbp.conf
    echo "debian-branch = debian/$RELEASE" >> debian/gbp.conf
    echo "upstream-branch = upstream/$RELEASE" >> debian/gbp.conf
    echo "debian-tag = debian/$RELEASE/%(version)s" >> debian/gbp.conf
    echo "upstream-tag = upstream/$RELEASE/%(version)s" >> debian/gbp.conf
    echo "" >> debian/gbp.conf
    echo "[buildpackage]" >> debian/gbp.conf
    echo "git-debian-branch = debian/$RELEASE" >> debian/gbp.conf
    echo "git-debian-tag = debian/$RELEASE/%(version)s" >> debian/gbp.conf
    echo "git-upstream-tag = upstream/$RELEASE/%(version)s" >> debian/gbp.conf
    echo "" >> debian/gbp.conf
    echo "[import-orig]" >> debian/gbp.conf
    echo "pristine-tar = True" >> debian/gbp.conf

    git add debian/gbp.conf
    git commit debian/gbp.conf -m "add configuration of gbp"
    export PIDTOKILL=$$
    echo ""
    echo "To continue:"
    echo "1) Edit the debian/ configuration"
    echo "2) Commit your changes"
    echo "3) Execute \"pidpbuild --continue\""
    echo ""
    echo ""
    echo "To push changes into STASH repository:"
    echo "4) Create a new stash repository with its name: \"${PACKAGE}\""
    echo "     at https://stash.desy.de/projects/PIDP"
    echo "5) Execute \"pidppush ${PACKAGE}\""
    echo "4) Set debian/$RELEASE as a default branch"
    echo "     at https://stash.desy.de/projects/PIDP/${PACKAGE}/settings"
    echo ""

    if [[ -z $NONEWBASH ]] ; then
	exec bash
    fi
fi