#!/usr/bin/env bash

if [ $# -lt 3 ]; then
	echo "usage: $0 <db-name> <db-user> <db-pass> [db-host] [wp-version]"
	exit 1
fi

DB_NAME=$1
DB_USER=$2
DB_PASS=$3
DB_HOST=${4-localhost}
WP_VERSION=${5-latest}

WP_TESTS_DIR=${WP_TESTS_DIR-/tmp/wordpress-tests-lib/includes}
WP_CORE_DIR=${WP_CORE_DIR-/tmp/wordpress/}

set -ex

download() {
    if [ `which curl` ]; then
        curl -s "$1" > "$2";
    elif [ `which wget` ]; then
        wget -nv -O "$2" "$1"
    fi
}

install_wp() {

	if [ -d $WP_CORE_DIR ]; then
		return;
	fi

	mkdir -p $WP_CORE_DIR

	if [ $WP_VERSION == 'latest' ]; then
		local ARCHIVE_NAME='latest'
	else
		local ARCHIVE_NAME="wordpress-$WP_VERSION"
	fi

	download https://wordpress.org/${ARCHIVE_NAME}.tar.gz  /tmp/wordpress.tar.gz
	tar --strip-components=1 -zxmf /tmp/wordpress.tar.gz -C $WP_CORE_DIR

	download https://raw.github.com/markoheijnen/wp-mysqli/master/db.php $WP_CORE_DIR/wp-content/db.php
}

install_test_suite() {
	# portable in-place argument for both GNU sed and Mac OSX sed
	if [[ $(uname -s) == 'Darwin' ]]; then
		local ioption='-i .bak'
	else
		local ioption='-i'
	fi

	# set up testing suite if it doesn't yet exist
	if [ ! "$(ls -A $WP_TESTS_DIR)" ]; then
		# set up testing suite
		mkdir -p $WP_TESTS_DIR
		svn co --quiet http://develop.svn.wordpress.org/trunk/tests/phpunit/includes/ $WP_TESTS_DIR
	fi

	cd $WP_TESTS_DIR

	if [ ! -f wp-tests-config.php ]; then
		download https://develop.svn.wordpress.org/trunk/wp-tests-config-sample.php $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
		sed $ioption "s:dirname( __FILE__ ) . '/src/':'$WP_CORE_DIR':" $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
		sed $ioption "s/youremptytestdbnamehere/$DB_NAME/" $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
		sed $ioption "s/yourusernamehere/$DB_USER/" $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
		sed $ioption "s/yourpasswordhere/$DB_PASS/" $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
		sed $ioption "s|localhost|${DB_HOST}|" $(dirname ${WP_TESTS_DIR})/wp-tests-config.php
	fi

}

install_db() {
	# parse DB_HOST for port or socket references
	local PARTS=(${DB_HOST//\:/ })
	local DB_HOSTNAME=${PARTS[0]};
	local DB_SOCK_OR_PORT=${PARTS[1]};
	local EXTRA=""

	if ! [ -z $DB_HOSTNAME ] ; then
		if [ $(echo $DB_SOCK_OR_PORT | grep -e '^[0-9]\{1,\}$') ]; then
			EXTRA=" --host=$DB_HOSTNAME --port=$DB_SOCK_OR_PORT --protocol=tcp"
		elif ! [ -z $DB_SOCK_OR_PORT ] ; then
			EXTRA=" --socket=$DB_SOCK_OR_PORT"
		elif ! [ -z $DB_HOSTNAME ] ; then
			EXTRA=" --host=$DB_HOSTNAME --protocol=tcp"
		fi
	fi

	# create database
	mysqladmin create $DB_NAME --user="$DB_USER" --password="$DB_PASS"$EXTRA
}

install_wp
install_test_suite
install_db