#!/usr/bin/env bash
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

PROJECT_ID="${RAILWAY_PROJECT_ID:-a6bc4ea7-e89c-42da-819a-8879fb022a0d}"
ENVIRONMENT="${RAILWAY_ENVIRONMENT:-production}"

usage() {
  cat <<'EOF'
Deploy services to Railway from this monorepo (Dockerfile builds on Railway).

Usage:
  scripts/railway-deploy.sh [all|platform|extraction] [--project <id>] [--env <name>] [--message <msg>]

Env vars:
  RAILWAY_PROJECT_ID    Defaults to this repo's Railway project ID
  RAILWAY_ENVIRONMENT   Defaults to "production"

Examples:
  scripts/railway-deploy.sh all
  scripts/railway-deploy.sh platform --message "hotfix"
  RAILWAY_ENVIRONMENT=staging scripts/railway-deploy.sh extraction
EOF
}

SERVICE_ARG="${1:-all}"
shift || true

SERVICES=()
case "$SERVICE_ARG" in
  all) SERVICES=("platform-service" "extraction-service") ;;
  platform|platform-service) SERVICES=("platform-service") ;;
  extraction|extraction-service) SERVICES=("extraction-service") ;;
  -h|--help) usage; exit 0 ;;
  *)
    echo "Unknown service selector: $SERVICE_ARG" >&2
    usage
    exit 2
    ;;
esac

MESSAGE=""
while [[ $# -gt 0 ]]; do
  case "$1" in
    --project)
      PROJECT_ID="${2:-}"
      shift 2
      ;;
    --env)
      ENVIRONMENT="${2:-}"
      shift 2
      ;;
    --message)
      MESSAGE="${2:-}"
      shift 2
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "Unknown arg: $1" >&2
      usage
      exit 2
      ;;
  esac
done

if [[ -z "$PROJECT_ID" ]]; then
  echo "Missing --project (or RAILWAY_PROJECT_ID)." >&2
  exit 2
fi

if [[ -z "$ENVIRONMENT" ]]; then
  echo "Missing --env (or RAILWAY_ENVIRONMENT)." >&2
  exit 2
fi

if [[ -z "$MESSAGE" ]]; then
  if command -v git >/dev/null 2>&1 && git rev-parse --git-dir >/dev/null 2>&1; then
    sha="$(git rev-parse --short HEAD 2>/dev/null || true)"
    dirty=""
    if [[ -n "$(git status --porcelain 2>/dev/null || true)" ]]; then
      dirty=" (dirty)"
    fi
    MESSAGE="deploy ${sha}${dirty}"
  else
    MESSAGE="deploy $(date -u +%Y-%m-%dT%H:%M:%SZ)"
  fi
fi

if ! command -v railway >/dev/null 2>&1; then
  echo "railway CLI not found. Install: npm i -g @railway/cli" >&2
  exit 1
fi

for svc in "${SERVICES[@]}"; do
  echo "Deploying $svc (project=$PROJECT_ID env=$ENVIRONMENT)…"
  railway up -p "$PROJECT_ID" -e "$ENVIRONMENT" -s "$svc" -d -m "$MESSAGE"
done