#!/bin/bash -x
###############################################################################
# Clone MediaWiki database: one database per each parallel thread of "phpunit".
# (for parallel testing via Fastest)
###############################################################################
# The following environment variables are provided by GitHub Actions:
# $DBNAME - typically "traviswiki"
# $DBTYPE - either "mysql" or "postgres"
###############################################################################

ORIGINAL_DB_NAME="${DBNAME}"

# Suffix of cloned DB must be same as in ModerationSettings.php
CLONED_DB_NAME="${ORIGINAL_DB_NAME}_thread${ENV_TEST_CHANNEL}"

# Clone the database (including the initial data, if any).
function clone_database() {
	if [ "$DBTYPE" = "mysql" ]; then
		mysql -e "CREATE DATABASE ${CLONED_DB_NAME}" &&
			mysqldump "${ORIGINAL_DB_NAME}" | mysql -D "${CLONED_DB_NAME}"
	else if [ "$DBTYPE" = "postgres" ]; then
		echo "CREATE DATABASE ${CLONED_DB_NAME} TEMPLATE ${ORIGINAL_DB_NAME};" | psql -h 127.0.0.1 -U root "${ORIGINAL_DB_NAME}"
	fi; fi
}

( clone_database ) >"fastest.log.${ENV_TEST_CHANNEL}" 2>&1

if $? -ne 0; then
	# Fastest silently ignores any errors that happen in "before scripts" (-b fastest_init_thread.sh),
	# but we need to know them for troubleshooting purposes.
	killall -9 fastest
fi