#!/usr/bin/with-contenv bashio
# shellcheck shell=bash
set -euo pipefail

if bashio::config.true 'USE_EXTERNAL_DB'; then
    bashio::log.info "External DB requested; skipping internal Postgres service."
    exit 0
fi

# Persistent location
PGDATA="${PGDATA:-/config/postgres-data}"
export PGDATA

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

INITDB="$(command -v initdb || echo /usr/bin/initdb)"
POSTGRES="$(command -v postgres || echo /usr/bin/postgres)"

if [[ ! -x "$INITDB" || ! -x "$POSTGRES" ]]; then
    bashio::log.error "PostgreSQL binaries not found."
    exit 1
fi

if [[ ! -s "${PGDATA}/PG_VERSION" ]]; then
    bashio::log.info "Initializing Postgres data directory..."
    # Alpine’s initdb runs as the postgres user
    s6-setuidgid postgres "$INITDB" -D "${PGDATA}"
fi

bashio::log.info "Starting Postgres (127.0.0.1:5432)..."
exec s6-setuidgid postgres "$POSTGRES" -D "${PGDATA}" -c listen_addresses='127.0.0.1'