#!/usr/bin/env bash

source /scripts/env-data.sh

# test if DATADIR has content
# Do initialization if DATADIR is empty, or RECREATE_DATADIR is true
if [[ -z "$(ls -A ${DATADIR} 2> /dev/null)" || "${RECREATE_DATADIR}" == 'TRUE' ]]; then
    # Only attempt reinitializations if ${RECREATE_DATADIR} is true
    # No Replicate From settings. Assume that this is a master database.
    # Initialise db
    echo "Initializing Postgres Database at ${DATADIR}"
    create_dir ${DATADIR}
    rm -rf ${DATADIR}/*
    chown -R postgres:postgres ${DATADIR}
    echo "Initializing with command:"
    echo "postgres" > /tmp/superuser_pass.txt
    command="$INITDB -U postgres --pwfile "/tmp/superuser_pass.txt" -E ${DEFAULT_ENCODING} --lc-collate=${DEFAULT_COLLATION} --lc-ctype=${DEFAULT_CTYPE} --wal-segsize=${WAL_SEGSIZE} --auth=${PASSWORD_AUTHENTICATION} -D ${DATADIR} ${INITDB_EXTRA_ARGS}"
    su - postgres -c "$command"
    rm /tmp/superuser_pass.txt
fi;

# Set proper permissions
# needs to be done as root:
create_dir ${WAL_ARCHIVE}
chown -R postgres:postgres ${DATADIR} ${WAL_ARCHIVE}
chmod -R 750 ${DATADIR} ${WAL_ARCHIVE}

# test database existing
trap "echo \"Sending SIGTERM to postgres\"; killall -s SIGTERM postgres" SIGTERM


# Run as local only for config setup phase to avoid outside access
su - postgres -c "${POSTGRES} -D ${DATADIR} -c config_file=${CONF} ${LOCALONLY} &"

# wait for postgres to come up
until su - postgres -c "pg_isready"; do
  sleep 1
done
echo "postgres ready"

# Setup user
source /scripts/setup-user.sh

# enable extensions in template1 if env variable set to true
if [[ "$(boolean ${POSTGRES_TEMPLATE_EXTENSIONS})" == TRUE ]] ; then
    for ext in $(echo ${POSTGRES_MULTIPLE_EXTENSIONS} | tr ',' ' '); do
        echo "Enabling ${ext} in the database template1"
        su - postgres -c "psql -c 'CREATE EXTENSION IF NOT EXISTS ${ext} cascade;' template1"
    done
fi

# Create a default db called 'gis' or $POSTGRES_DBNAME that you can use to get up and running quickly
# It will be owned by the docker db user
# Since we now pass a comma separated list in database creation we need to search for all databases as a test

for db in $(echo ${POSTGRES_DBNAME} | tr ',' ' '); do
        RESULT=`su - postgres -c "psql -t -c \"SELECT count(1) from pg_database where datname='${db}';\""`
        if [[  ${RESULT} -eq 0 ]]; then
            echo "Create db ${db}"
            su - postgres -c "createdb -O ${POSTGRES_USER} ${db}"
            for ext in $(echo ${POSTGRES_MULTIPLE_EXTENSIONS} | tr ',' ' '); do
                echo "Enabling ${ext} in the database ${db}"
                if [[ ${ext} = 'pg_cron' ]]; then
                  echo " pg_cron doesn't need to be installed"
                else
                  su - postgres -c "psql -c 'CREATE EXTENSION IF NOT EXISTS ${ext} cascade;' $db"
                fi
            done
            echo "Loading legacy sql"
            su - postgres -c "psql ${db} -f ${SQLDIR}/legacy_minimal.sql" || true
            su - postgres -c "psql ${db} -f ${SQLDIR}/legacy_gist.sql" || true
            PGPASSWORD=${POSTGRES_PASS} psql ${db} -U ${POSTGRES_USER} -p 5432 -h localhost -c "ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO ${REPLICATION_USER};"
            if [[ "$WAL_LEVEL" == 'logical' ]];then
              PGPASSWORD=${POSTGRES_PASS} psql ${db} -U ${POSTGRES_USER} -p 5432 -h localhost -c "CREATE PUBLICATION logical_replication;"
            fi

        else
         echo "${db} db already exists"
        fi
done

CRON_LOCKFILE="${ROOT_CONF}/.cron_ext.lock"
if [ ! -f "${CRON_LOCKFILE}" ]; then
	su - postgres -c "psql -c 'CREATE EXTENSION IF NOT EXISTS pg_cron cascade;' ${SINGLE_DB}"
	touch ${CRON_LOCKFILE}
fi

# This should show up in docker logs afterwards
su - postgres -c "psql -l 2>&1"