#!/usr/bin/env bash

set -euo pipefail

CONTAINER_NAME="${CONTAINER_NAME:-sprint-postgres}"
POSTGRES_IMAGE="${POSTGRES_IMAGE:-postgres:16-alpine}"
POSTGRES_USER="${POSTGRES_USER:-eussi}"
POSTGRES_PASSWORD="${POSTGRES_PASSWORD:-password}"
POSTGRES_DB="${POSTGRES_DB:-issue}"
POSTGRES_PORT="${POSTGRES_PORT:-5432}"

if ! command -v docker >/dev/null 2>&1; then
  echo "docker is required but not installed."
  exit 1
fi

if docker ps -a --filter "name=^/${CONTAINER_NAME}$" --format '{{.Names}}' | grep -q "^${CONTAINER_NAME}$"; then
  docker update --restart unless-stopped "${CONTAINER_NAME}" >/dev/null
  docker start "${CONTAINER_NAME}" >/dev/null || true
  echo "container '${CONTAINER_NAME}' already exists and is running (or starting)."
else
  docker run -d \
    --name "${CONTAINER_NAME}" \
    --restart unless-stopped \
    -e "POSTGRES_USER=${POSTGRES_USER}" \
    -e "POSTGRES_PASSWORD=${POSTGRES_PASSWORD}" \
    -e "POSTGRES_DB=${POSTGRES_DB}" \
    -p "${POSTGRES_PORT}:5432" \
    "${POSTGRES_IMAGE}" >/dev/null
  echo "container '${CONTAINER_NAME}' created and started."
fi

echo "connection string: postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@localhost:${POSTGRES_PORT}/${POSTGRES_DB}"