#!/usr/bin/env python3
"""Einmaliges PRE-Release-Backup 1.3.13."""
from __future__ import annotations

import shutil
import subprocess
from datetime import datetime
from pathlib import Path

ROOT = Path(__file__).resolve().parent
TS = datetime.now().strftime("%Y%m%d_%H%M%S")
BACKUP = ROOT / f"backup_pre_release_1_3_13_{TS}"
BACKUP.mkdir(parents=True, exist_ok=True)

FILES = [
    "aza_version.py",
    "version.json",
    "release/version.json",
    "_build_info.py",
    "web/empfang.html",
    "aza_empfang_webview.py",
    "aza_empfang_shell_surface.py",
    "basis14.py",
    "build_exe.ps1",
    "build_installer.ps1",
    "release.ps1",
    "sign_release_artifacts.ps1",
    "build_release_manifest.ps1",
    "publish_update.ps1",
    "start_doku_prompt_test.ps1",
    "aza_build_stamp.py",
    "installer/aza_installer.iss",
]

for rel in FILES:
    src = ROOT / rel
    if src.is_file():
        dst = BACKUP / rel
        dst.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(src, dst)

for name, cmd in [
    ("git_status_before.txt", ["git", "status", "--short"]),
    ("git_diff_stat_before.txt", ["git", "diff", "--stat"]),
    ("git_diff_before.patch", ["git", "diff"]),
]:
    try:
        r = subprocess.run(cmd, cwd=ROOT, capture_output=True, text=True, check=False)
        (BACKUP / name).write_text(r.stdout + r.stderr, encoding="utf-8")
    except Exception as exc:
        (BACKUP / name).write_text(f"ERROR: {exc}", encoding="utf-8")

v13 = ROOT / "dist" / "test_final_release_candidate_v13"
v13_dst = BACKUP / "dist" / "test_final_release_candidate_v13"
if v13.is_dir():
    shutil.copytree(v13, v13_dst, dirs_exist_ok=True)

readme = f"""WIEDERHERSTELLUNG backup_pre_release_1_3_13
Erstellt: {TS}
Projektroot: {ROOT}

1. Dateien aus diesem Backup ins Projektroot zurueckkopieren
2. dist/test_final_release_candidate_v13/ zurueckkopieren
3. Git-Stand: git_status_before.txt, git_diff_before.patch
4. Server-Manifest/Installer bei Bedarf aus Server-PRE-Backup wiederherstellen (1.3.12)
"""
(BACKUP / "README_RESTORE.txt").write_text(readme, encoding="utf-8")
print(f"PRE_BACKUP_DIR={BACKUP}")