#!/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

# Create folder structure
mkdir -p /run/postgresql
chown postgres:postgres /run/postgresql
chmod 775 /run/postgresql

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

# Create and secure PGDATA
mkdir -p "$PGDATA"
chown -R postgres:postgres "$PGDATA"
chmod 0700 "$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 "${PGDATA}/PG_VERSION" ]]; then
    bashio::log.info "Initializing Postgres data directory..."
    # Alpine’s initdb runs as the postgres user
    su - postgres -c "$INITDB -D $PGDATA"
fi

exec su - postgres -c "$POSTGRES -D $PGDATA -c listen_addresses='127.0.0.1'" & \
bashio::log.info "Starting Postgres (127.0.0.1:5432)..."