#
# git-flow -- A collection of Git extensions to provide high-level
# repository operations for Vincent Driessen's branching model.
#
# A blog post presenting this model is found at:
#    http://blog.avirtualhome.com/development-workflow-using-git/
#
# Feel free to contribute to this project at:
#    http://github.com/petervanderdoes/gitflow
#
# Authors:
# Copyright 2012,2013 Peter van der Does. 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
#


initialize() {
	require_git_repo
	require_gitflow_initialized
	gitflow_load_settings
}

usage() {
	OPTIONS_SPEC="\
git flow config [list]
git flow config set
git flow config base

Manage the git-flow configuration.

For more specific help type the command followed by --help
--
"
	flags_help
}

parse_args() {
	# Parse options
	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	OPTION=$(echo $1|tr '[:upper:]' '[:lower:]')

	if [ "$FLAGS_file" != "" ]; then
		gitflow_config_option="--file '$FLAGS_file'"
	elif flag local; then
		gitflow_config_option="--local"
	elif flag global; then
		gitflow_config_option="--global"
	elif flag system; then
		gitflow_config_option="--system"
	else
		gitflow_config_option=""
	fi

}

# Default entry when no SUBACTION is given
cmd_default() {
	cmd_list "$@"
}

cmd_list() {
	OPTIONS_SPEC="\
git flow config [list]

Show the git-flow configurations
--
h,help!           Show this help

Use config file location
local!    Use repository config file
global!   Use global config file
system!   Use system config file
file=     Use given config file
"
	local output

	# Define flags
	DEFINE_boolean 'local' false 'use repository config file'
	DEFINE_boolean 'global' false 'use global config file'
	DEFINE_boolean 'system' false 'use system config file'
	DEFINE_string 'file' "" 'use given config file'

	# Parse arguments
	parse_args "$@"

	output=$(git config $gitflow_config_option --get gitflow.branch.master)
	echo "Branch name for production releases: $output "

	output=$(git config $gitflow_config_option --get gitflow.branch.develop)
	echo "Branch name for \"next release\" development: $output "

	output=$(git config $gitflow_config_option --get gitflow.prefix.feature)
	echo "Feature branch prefix: $output "

	output=$(git config $gitflow_config_option --get gitflow.prefix.release)
	echo "Release branch prefix: $output "

	output=$(git config $gitflow_config_option --get gitflow.prefix.hotfix)
	echo "Hotfix branch prefix: $output "

	output=$(git config $gitflow_config_option --get gitflow.prefix.support)
	echo "Support branch prefix: $output "

	output=$(git config $gitflow_config_option --get gitflow.prefix.versiontag)
	echo "Version tag prefix: $output "
}

cmd_set() {
	OPTIONS_SPEC="\
git flow config set <option> <value>

Set the git-flow configuration option to the given value
--
h,help!           Show this help

Use config file location
local!    Use repository config file
global!   Use global config file
system!   Use system config file
file=     Use given config file
"
	local value cfg_option txt

	# Define flags
	DEFINE_boolean 'local' false 'use repository config file'
	DEFINE_boolean 'global' false 'use global config file'
	DEFINE_boolean 'system' false 'use system config file'
	DEFINE_string 'file' "" 'use given config file'

	# Parse arguments
	parse_args "$@"
	eval set -- "${FLAGS_ARGV}"
	value=$2

	case $OPTION in
	master)
		cfg_option="gitflow.branch.master"
		txt="Branch name for production releases"
		;;
	develop)
		cfg_option="gitflow.branch.develop"
		txt="Branch name for \"next release\" development"
		;;
	feature)
		cfg_option="gitflow.prefix.feature"
		txt="Feature branch prefix"
		;;
	hotfix)
		cfg_option="gitflow.prefix.hotfix"
		txt="Hotfix branch prefix"
		;;
	release)
		cfg_option="gitflow.prefix.release"
		txt="Release branch prefix"
		;;
	support)
		cfg_option="gitflow.prefix.support"
		txt="Support branch prefix"
		;;
	versiontagprefix)
		cfg_option="gitflow.prefix.versiontag"
		txt="Version tag prefix"
		;;
	*)
		die_help "Invalid option given."
		;;
	esac

	[ -n "$value" ] || die_help "No value given"

	if [ $OPTION = "master" ]; then
		develop_branch=$(git config --get gitflow.branch.develop)
		if [ "$value" = $develop_branch ]; then
			die "Production and \"next release\" branch should differ."
		fi

		if ! git_local_branch_exists "$value" && git_remote_branch_exists "origin/$value"; then
			git_do branch "$value" "origin/$value" >/dev/null 2>&1
		elif ! git_local_branch_exists "$value"; then
			die "Local branch '$value' does not exist."
		fi
	fi

	if [ $OPTION = "develop" ]; then
		master_branch=$(git config --get gitflow.branch.master)
		if [ "$value" = $master_branch ]; then
			die "Production and \"next release\" branch should differ."
		fi

		if ! git_local_branch_exists "$value" && git_remote_branch_exists "origin/$value"; then
			git_do branch "$value" "origin/$value" >/dev/null 2>&1
		elif ! git_local_branch_exists "$value"; then
			die "Local branch '$value' does not exist."
		fi
	fi

	git_do config $gitflow_config_option $cfg_option "$value"

	case $? in
	0)
		;;
	3)
		die "The config file is invalid."
		;;
	4)
		die "Can not write to the config file."
		;;
	*)
		die "Unknown return code [$?]. Please file an issue about this error."
		;;
	esac

	echo
	echo "Summary of actions:"
	if [ "$FLAGS_file" != "" ]; then
		echo "- Using configuration file '$FLAGS_file'"
	elif flag local; then
		echo "- Using repository specific configuration file."
	elif flag global; then
		echo "- Using user-specific configuration file."
	elif flag system; then
		echo "- Using system-wide configuration file."
	else
		echo "- Using repository specific configuration file."
	fi
	echo "- $txt set to $value"
	echo
}

cmd_base () {
		OPTIONS_SPEC="\
git flow config base [<options>] <branch> [<base>]

Set the given <base> for the given <branch>
--
h,help!           Show this help
get               Get the base for the given branch (default behavior).
set               Set the given base for the given branch.
"

	DEFINE_boolean 'get' true 'Get the base for the given branch (default behavior).'
	DEFINE_boolean 'set' false 'Set the given base for the given branch.'

	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	if flag 'set'; then
		[ -z "$1" ] && die_help 'No branch given'
		[ -z "$2" ] && die_help 'No base given'
		__set_base "$@"
	else
		[ -z "$1" ] && die_help 'No branch given'
		__get_base "$@"
	fi
}

cmd_help() {
	usage
	exit 0
}

# Private functions
__set_base () {

	require_branch "$1"
	git_branch_exists "$2" || die_help "Given base doesn't exists or is not a branch."

	gitflow_config_set_base_branch "$2" "$1"
}

__get_base () {
	local base

	base=$(gitflow_config_get_base_branch "$1")
	echo
	if [ -z "$base" ]; then
		echo "Base branch not set for branch '"$1"'"
	else
		echo "Base branch for branch '"$1"' set to '"$base"'"
	fi
}
