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

# --- Wczytaj zmienne z .env ---
if [[ -f .env ]]; then
  set -a
  source .env
  set +a
fi

APP_PORT="${APP_PORT:-8080}"

REPO_DIR="${REPO_DIR:-$(pwd)}"
COMPOSE_FILE="${COMPOSE_FILE:-docker-compose.yml}"
GIT_REMOTE="${GIT_REMOTE:-origin}"
GIT_BRANCH="${GIT_BRANCH:-$(git -C "$REPO_DIR" rev-parse --abbrev-ref HEAD 2>/dev/null || echo main)}"

# Domyślny profil i usługi
DB_PROFILE="sqlite"  # domyślnie sqlite, czyli brak profilu pgsql/mysql
SERVICES=()

# Przetwarzanie argumentów
if [[ $# -gt 0 ]]; then
  case "$1" in
    pgsql|mysql|sqlite)
      DB_PROFILE="$1"
      shift
      ;;
  esac
  SERVICES=("$@")
fi

log() { printf "\n==> %s\n" "$*"; }

command -v git >/dev/null || { echo "Brak 'git' w PATH"; exit 1; }
command -v docker >/dev/null || { echo "Brak 'docker' w PATH"; exit 1; }
if ! docker compose version >/dev/null 2>&1; then
  echo "Wymagany jest 'docker compose' (plugin), nie stary 'docker-compose'."
  exit 1
fi

if [[ ! -f "$REPO_DIR/$COMPOSE_FILE" ]]; then
  if [[ -f "$REPO_DIR/compose.yaml" ]]; then
    COMPOSE_FILE="compose.yaml"
  else
    echo "Nie znaleziono pliku Compose w: $REPO_DIR/$COMPOSE_FILE"
    exit 1
  fi
fi

cd "$REPO_DIR"

log "Aktualizacja repo: git pull --ff-only ($GIT_REMOTE/$GIT_BRANCH)"
git fetch --prune "$GIT_REMOTE"
git checkout "$GIT_BRANCH" >/dev/null 2>&1 || true
git pull --ff-only "$GIT_REMOTE" "$GIT_BRANCH"

log "Zapisywanie hasha commita do version.txt"
git rev-parse --short HEAD > version.txt

log "Docker Compose DOWN (usuwanie kontenerów i osieroconych usług)"
docker compose -f "$COMPOSE_FILE" down --remove-orphans

log "Generowanie default.vcl z APP_PORT=$APP_PORT"
envsubst < deploy/varnish/default.vcl.template > deploy/varnish/default.vcl

# Budowanie i uruchamianie
log "Docker Compose UP (build bez deps) dla profilu: $DB_PROFILE i serwisów: ${SERVICES[*]:-(wszystkie)}"

if [[ "$DB_PROFILE" == "pgsql" ]]; then
  PROFILE_OPT="--profile pgsql"
elif [[ "$DB_PROFILE" == "mysql" ]]; then
  PROFILE_OPT="--profile mysql"
else
  PROFILE_OPT=""
fi

if [[ ${#SERVICES[@]} -gt 0 ]]; then
  docker compose -f "$COMPOSE_FILE" up -d --no-deps --build $PROFILE_OPT "${SERVICES[@]}"
else
  docker compose -f "$COMPOSE_FILE" up -d --no-deps --build $PROFILE_OPT
fi

log "Gotowe ✅  (wersja: $(cat version.txt))"