#!/bin/bash
set -e

DATA_DIR="/var/lib/postgresql/data"

if [ -f "$DATA_DIR/PG_VERSION" ]; then
  echo "Data directory already initialized, skipping base backup"
  exit 0
fi

echo "Initializing replica from primary..."

rm -rf "$DATA_DIR"/*
export PGPASSWORD="$REPLICATION_PASSWORD"

pg_basebackup \
  -h "$PRIMARY_HOST" \
  -p "$PRIMARY_PORT" \
  -U "$REPLICATION_USER" \
  -D "$DATA_DIR" \
  -Fp \
  -Xs \
  -R \
  -P

echo "Replica base backup completed."