#!/bin/sh

set -e

. /etc/default/postgresql

# 2nd clause is necessary to prevent symlinking the directory to itself when it
# doesn't exist yet
if [ "$PGROOT" != "/var/lib/postgresql" ]; then
    echo "Creating symlink /var/lib/postgresql -> $PGROOT"

    # Remove /var/lib/postgres if empty dir, but not if symlink
    if [ ! -L /var/lib/postgres ] && [ -d /var/lib/postgres ]; then
        rmdir /var/lib/postgres
    fi

    ln -sf "$PGROOT" /var/lib/postgresql
fi

PGDATA="$PGROOT/data"

if [ ! -d "$PGDATA" ]; then
    echo "Initializing database in $PGDATA"

    mkdir -p "$PGDATA"
    chown -R postgres:postgres "$PGDATA"

    su - postgres -m -c "/usr/bin/initdb $INITOPTS -D '$PGDATA'" >/dev/null

    if [ -f /etc/postgresql/postgresql.conf ]; then
        ln -sf /etc/postgresql/postgresql.conf "$PGDATA/postgresql.conf"
    fi
fi
