From 179743461f150f7fda1f5f6672a153fa11ab18a9 Mon Sep 17 00:00:00 2001
From: Whyverum <whyverum@gmail.com>
Date: Mon, 1 Dec 2025 18:17:14 +0700
Subject: [PATCH] =?UTF-8?q?=D0=93=D0=B5=D0=BD=D0=B5=D1=80=D0=B0=D1=82?=
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---
 backend/services/license_service.py | 43 +++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 backend/services/license_service.py

diff --git a/backend/services/license_service.py b/backend/services/license_service.py
new file mode 100644
index 0000000..ff6bd4d
--- /dev/null
+++ b/backend/services/license_service.py
@@ -0,0 +1,43 @@
+import tempfile
+from zipfile import ZipFile
+from pathlib import Path
+from ..utils.encoding import variant_base64_encode
+from ..utils.crypto import encrypt_bytes
+
+class LicenseType:
+    Professional: int = 1
+    Educational: int = 3
+    Personal: int = 4
+
+def generate_license_file(
+    user_name: str,
+    version: str,
+    lic_type: int = LicenseType.Professional,
+    count: int = 1
+) -> tuple[str, tempfile.TemporaryDirectory]:
+    """
+    Генерация временного ZIP-файла с лицензией Custom.mxtpro.
+    Возвращает путь к файлу и объект временной директории для cleanup.
+    """
+    # Разбор версии
+    try:
+        major_str, minor_str = version.split(".")
+        major_version: int = int(major_str)
+        minor_version: int = int(minor_str)
+    except Exception as e:
+        raise ValueError(f"Неверный формат версии: {version}") from e
+    # Формирование строки лицензии (исправлено: убрали лишний #, интегрировали цифры в один блок)
+    license_str: str = (
+        f"{lic_type}#{user_name}|{major_version}{minor_version}"
+        f"#{count}#{major_version}3{minor_version}6{minor_version}#0#0#0#"
+    )
+    # Шифрование и кодирование
+    encrypted: bytes = encrypt_bytes(0x0787, license_str.encode("utf-8"))
+    encoded: str = variant_base64_encode(encrypted).decode("ascii")
+    
+    # Создание временной директории и файла с фиксированным именем
+    temp_dir = tempfile.TemporaryDirectory()
+    filepath = Path(temp_dir.name) / "Custom.mxtpro"
+    with ZipFile(filepath, "w") as zf:
+        zf.writestr("Pro.key", encoded)
+    return str(filepath), temp_dir
\ No newline at end of file