#!/bin/sh
# This gitolite3 hook exports content for web publishing.

# The following gitolite3 environment variables affect its use:
# WEB_BRANCH     tree-ish (hook silently skipped if unset)
# WEB_BASEDIR    path writable by gitolite3 (default: /var/www/gitolite3)
# WEB_EXEC_INIT  command executed in exported dir after initial checkout
# WEB_EXEC       command executed in exported dir after every checkout

set -eu

WEB_BRANCH=${GL_OPTION_WEB_BRANCH:-}
WEB_EXEC=${GL_OPTION_WEB_EXEC:-}
WEB_EXEC_INIT=${GL_OPTION_WEB_EXEC_INIT:-}

[ -n "$WEB_BRANCH" ] || exit 0

# which git branch to check out
WEB_BASEDIR=${GL_OPTION_WEB_BASEDIR:-/var/www/gitolite3}

GIT_WORK_TREE="$WEB_BASEDIR/$GL_REPO"
export GIT_WORK_TREE

pwd
echo "Checking out content to $GIT_WORK_TREE ..."

if [ -e "$GIT_WORK_TREE" ]; then
	git checkout -f "$WEB_BRANCH"
	chmod -R u=rw,go=r,a+X "$GIT_WORK_TREE"
else
	git clone --quiet --branch "$WEB_BRANCH" .
	chmod -R u=rw,go=r,a+X "$GIT_WORK_TREE"
	if [ -n "$WEB_EXEC_INIT" ]; then
		( cd "$WEB_BASEDIR" && echo "$WEB_EXEC_INIT" | sh - )
	fi
fi

if [ -n "$WEB_EXEC" ]; then
	( cd "$WEB_BASEDIR" && echo "$WEB_EXEC" | sh - )
fi

echo "Checkout completed succesfully!"