#!/bin/bash
# https://stackoverflow.com/a/59466352
set -e
set -u

function create_user_and_database() {
    local database=$(echo $1)
    echo "  Creating user and database '$database'"
    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
        CREATE DATABASE $database;
EOSQL
    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" -d "$database"  <<-EOSQL
        CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
EOSQL
}

if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
    echo "Creating databases: $POSTGRES_MULTIPLE_DATABASES"
    for db in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
        create_user_and_database $db
    done
    echo "Databases created"
fi