#!/bin/sh
#
# Copyright 2010 Vincent Driessen. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#    1. Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#
#    2. Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY VINCENT DRIESSEN ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL VINCENT DRIESSEN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# The views and conclusions contained in the software and documentation are
# those of the authors and should not be interpreted as representing official
# policies, either expressed or implied, of Vincent Driessen.
#

# enable debug mode
if [ "$DEBUG" = "yes" ]; then
	set -x
fi

export GITFLOW_DIR="$HOME/.gityaflow"
export GITFLOW_REPO=${GITFLOW_REPO:-"git://github.com/innsand/git-yaflow.git"}

_git_wrapper() {
	cd $GITFLOW_DIR
	git $*
	cd $OLDPWD
	return $?
}

_install() {
	echo "Initing home in $GITFLOW_DIR"
	git clone --recursive -q "$GITFLOW_REPO" "$GITFLOW_DIR"
	_git_wrapper config --local --int gityaflow.updateInterval 86400
	_git_wrapper config --global alias.fl "yaflow"
	. $GITFLOW_DIR/gityaflow-bootstrap
	_make_update
	echo "Mkay"
}

usage() {
	echo "usage: git yaflow <subcommand>"
	echo
	echo "Available subcommands are:"
	bootstrap_usage_subcommands
	echo
	echo "Try 'git yaflow <subcommand> help' for details."
}

main() {
	# installing or update check
	if [ ! -d "$GITFLOW_DIR" ] ; then
		_install
	else
		. $GITFLOW_DIR/gityaflow-bootstrap
		_check_update
	fi

	# args check
	if [ $# -lt 1 ]; then
		usage
		exit 1
	fi

	# before loading parsers and main code.
	bootstrap_preinit

	# load common functionality
	. "$GITFLOW_DIR/gitflow-common"

	# This environmental variable fixes non-POSIX getopt style argument
	# parsing, effectively breaking git-flow subcommand parsing on several
	# Linux platforms.
	export POSIXLY_CORRECT=1

	# use the shFlags project to parse the command line arguments
	. "$GITFLOW_DIR/shFlags/src/shflags"
	FLAGS_PARENT="git yaflow"
	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	# sanity checks
	SUBCOMMAND="$1"; shift

	if [ ! -e "$GITFLOW_DIR/git-flow-$SUBCOMMAND" ]; then
		usage
		exit 1
	fi

	# run command
	. "$GITFLOW_DIR/git-flow-$SUBCOMMAND"
	FLAGS_PARENT="git yaflow $SUBCOMMAND"

	# test if the first argument is a flag (i.e. starts with '-')
	# in that case, we interpret this arg as a flag for the default
	# command
	SUBACTION="default"
	if [ "$1" != "" ] && ! echo "$1" | grep -q "^-"; then
		SUBACTION="$1"; shift
	fi
	if ! type "cmd_$SUBACTION" >/dev/null 2>&1; then
		warn "Unknown subcommand: '$SUBACTION'"
		usage
		exit 1
	fi

	bootstrap_preaction
	# run the specified action
	cmd_$SUBACTION "$@"
	bootstrap_postaction
}

main "$@"