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

# Deployment-Script für 1Panel/Python-Runtime.
# Im Container/auf dem Server im Projektverzeichnis ausführen:
#   ./deploy.sh
#
# Optional:
#   DEPLOY_REMOTE=origin DEPLOY_BRANCH=main ./deploy.sh
#   ./deploy.sh workspace-tenancy
#   echo workspace-tenancy > .deploy-branch
#   SKIP_PIP=1 ./deploy.sh
#   SKIP_COLLECTSTATIC=1 ./deploy.sh
#   DEPLOY_RESTART_CMD="..." ./deploy.sh

cd "$(dirname "$0")"

REMOTE="${DEPLOY_REMOTE:-origin}"
BRANCH_SOURCE="current branch"
if [[ $# -gt 0 && -n "${1:-}" ]]; then
  BRANCH="$1"
  BRANCH_SOURCE="command line"
elif [[ -n "${DEPLOY_BRANCH:-}" ]]; then
  BRANCH="$DEPLOY_BRANCH"
  BRANCH_SOURCE="DEPLOY_BRANCH"
elif [[ -f ".deploy-branch" && -n "$(tr -d '[:space:]' < .deploy-branch)" ]]; then
  BRANCH="$(tr -d '[:space:]' < .deploy-branch)"
  BRANCH_SOURCE=".deploy-branch"
else
  BRANCH="$(git branch --show-current 2>/dev/null || echo main)"
fi

if [[ -x ".venv/bin/python" ]]; then
  PY=".venv/bin/python"
elif command -v python3 >/dev/null 2>&1; then
  PY="python3"
elif command -v python >/dev/null 2>&1; then
  PY="python"
else
  echo "Fehler: python/python3 wurde nicht gefunden." >&2
  exit 1
fi

echo "==> Deploy $(pwd)"
echo "==> Branch: ${BRANCH} (${BRANCH_SOURCE})"
echo "==> Python: $($PY --version)"
echo "==> Git Update: ${REMOTE}/${BRANCH}"
git fetch "$REMOTE" "$BRANCH"
CURRENT_BRANCH="$(git branch --show-current 2>/dev/null || true)"
if [[ "$CURRENT_BRANCH" != "$BRANCH" ]]; then
  if git show-ref --verify --quiet "refs/heads/$BRANCH"; then
    git checkout "$BRANCH"
  else
    git checkout -b "$BRANCH" --track "$REMOTE/$BRANCH"
  fi
fi
git pull --ff-only "$REMOTE" "$BRANCH"

if [[ "${SKIP_PIP:-0}" != "1" ]]; then
  echo "==> Dependencies installieren/aktualisieren"
  "$PY" -m pip install -r requirements.txt
fi

if [[ -d "locale" ]]; then
  if ! command -v msgfmt >/dev/null 2>&1; then
    if command -v apt-get >/dev/null 2>&1 && [[ "$(id -u)" == "0" ]]; then
      echo "==> msgfmt/gettext fehlt, installiere gettext"
      apt-get update
      DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends gettext
    else
      echo "==> msgfmt/gettext fehlt und kann nicht automatisch installiert werden"
    fi
  fi
  if command -v msgfmt >/dev/null 2>&1; then
    echo "==> Übersetzungen kompilieren"
    "$PY" manage.py compilemessages
  else
    echo "==> Übersetzungen überspringen: msgfmt/gettext ist nicht installiert"
  fi
fi

echo "==> Django Checks"
"$PY" manage.py check

echo "==> Datenbank-Migrationen"
"$PY" manage.py migrate --noinput

if [[ "${SKIP_COLLECTSTATIC:-0}" != "1" ]]; then
  echo "==> Static Files sammeln"
  "$PY" manage.py collectstatic --noinput
fi

if [[ -n "${DEPLOY_RESTART_CMD:-}" ]]; then
  echo "==> Runtime neu starten"
  bash -lc "$DEPLOY_RESTART_CMD"
else
  echo "==> Fertig. Bitte die Python Runtime in 1Panel neu starten, falls sie nicht automatisch reloadet."
fi