#!/bin/bash
#
# Adapted from:
# https://github.com/mrts/docker-postgresql-multiple-databases/blob/master/create-multiple-postgresql-databases.sh

set -e
set -u

function create_user_and_database() {
        local database=$1
        local username=$2
        local password=$3
        echo "  Creating user '$username' and database '$database'"
        psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
            CREATE USER "$username" WITH PASSWORD '$password';
            CREATE DATABASE "$database";
            GRANT ALL PRIVILEGES ON DATABASE "$database" TO "$username";
EOSQL
}

if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
        echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
        for dbstr in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
                dbname=$(echo $dbstr | cut -d: -f1)
                username=$(echo $dbstr | cut -d: -f2)
                password=$(echo $dbstr | cut -d: -f3)
                echo "Creating: db=$dbname user=$username"
                create_user_and_database $dbname $username $password
        done
        echo "Multiple databases created"
fi