#!/usr/bin/env bash
# Updates MySQL databases dumps with MySQL Docker container schema/data
# Make sure you have added your user to the docker group before running this script
# or use sudo to run it


set -x # echo on
set -e # exit when any command fails
set -u # exit when undefined variables are found
set -o pipefail # prevents errors in a pipeline from being masked


# constants
readonly EDXAPP_MYSQL_DB_USER="edxapp001"
readonly ECOMMERCE_MYSQL_DB_USER="ecomm001"
readonly MYSQL_DB_PASSWORD="password"
readonly EDXAPP_DBS=("edxapp" "edxapp_csmh")
DBS=("ecommerce" "${EDXAPP_DBS[@]}")


# create a docker devstack with LMS and ecommerce
make destroy
make dev.clone.ssh
make dev.provision.services.lms+ecommerce

# dump schema and data from mysql databases in the mysql docker container and copy them to current directory in docker host
MYSQL_DOCKER_COMPOSE_SERVICE="mysql"
MYSQL_DOCKER_CONTAINER="edx.devstack.${MYSQL_DOCKER_COMPOSE_SERVICE}"
for DB_NAME in "${DBS[@]}"; do
    DB_CREATION_SQL_SCRIPT="${DB_NAME}.sql"
    if [[ " ${EDXAPP_DBS[@]} " =~ " ${DB_NAME} " ]]; then
        MYSQL_DB_USER=${EDXAPP_MYSQL_DB_USER}
    else
        MYSQL_DB_USER=${ECOMMERCE_MYSQL_DB_USER}
    fi
    docker exec ${MYSQL_DOCKER_CONTAINER} /bin/bash -c "mysqldump -u ${MYSQL_DB_USER} -p${MYSQL_DB_PASSWORD} --add-drop-database --skip-add-drop-table --databases ${DB_NAME} > ${DB_CREATION_SQL_SCRIPT}"
    docker cp ${MYSQL_DOCKER_CONTAINER}:/${DB_CREATION_SQL_SCRIPT} .
done