From 9296c28bed61e12afa213eeb91fca1e9d92236e2 Mon Sep 17 00:00:00 2001
From: Domi31tls <dbazin52@gmail.com>
Date: Thu, 25 Jun 2026 17:56:50 +0200
Subject: [PATCH] =?UTF-8?q?feat(gui):=20log=20fichier=20rotatif=20V6=20?=
 =?UTF-8?q?=C3=A0=20chemin=20connu=20(E1)?=
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---
 gui_v6/logging_setup.py                 | 67 +++++++++++++++++++++++++
 tests/unit/test_gui_v6_logging_setup.py | 16 ++++++
 2 files changed, 83 insertions(+)
 create mode 100644 gui_v6/logging_setup.py
 create mode 100644 tests/unit/test_gui_v6_logging_setup.py

diff --git a/gui_v6/logging_setup.py b/gui_v6/logging_setup.py
new file mode 100644
index 0000000..9d19ac5
--- /dev/null
+++ b/gui_v6/logging_setup.py
@@ -0,0 +1,67 @@
+"""Configuration du log fichier de la GUI V6 (E1).
+
+Sans ceci, la GUI frozen fenêtrée (sans console) perd ses logs de diagnostic.
+Le log est posé dans le même répertoire applicatif que la licence
+(``%LOCALAPPDATA%/Aivanov/Anonymisation``) pour faciliter sa récupération (E2/E3).
+"""
+
+from __future__ import annotations
+
+import logging
+import os
+from logging.handlers import RotatingFileHandler
+from pathlib import Path
+
+_CONFIGURED = False
+
+
+def _app_data_dir() -> Path:
+    base = os.environ.get("LOCALAPPDATA")
+    if base:
+        root = Path(base)
+    else:  # Linux/dev
+        root = Path.home() / ".local" / "share"
+    return root / "Aivanov" / "Anonymisation"
+
+
+def log_file_path() -> Path:
+    return _app_data_dir() / "logs" / "anonymisation.log"
+
+
+def setup_file_logging() -> Path:
+    """Configure un handler fichier rotatif sur le logger racine. Idempotent."""
+    global _CONFIGURED
+    path = log_file_path()
+    if _CONFIGURED:
+        return path
+    path.parent.mkdir(parents=True, exist_ok=True)
+    handler = RotatingFileHandler(
+        str(path), maxBytes=2_000_000, backupCount=3, encoding="utf-8"
+    )
+    handler.setFormatter(
+        logging.Formatter("%(asctime)s %(levelname)s %(name)s: %(message)s")
+    )
+    root = logging.getLogger()
+    if root.level == logging.NOTSET:
+        root.setLevel(logging.INFO)
+    root.addHandler(handler)
+    # Best-effort : si le cœur utilise loguru, on ajoute aussi un sink fichier.
+    try:
+        from loguru import logger as _loguru
+
+        _loguru.add(str(path), rotation="2 MB", retention=3, encoding="utf-8")
+    except Exception:
+        pass
+    _CONFIGURED = True
+    return path
+
+
+def _reset_for_tests() -> None:
+    """Réinitialise l'état pour l'isolation des tests (NE PAS appeler en prod)."""
+    global _CONFIGURED
+    root = logging.getLogger()
+    for h in list(root.handlers):
+        if isinstance(h, RotatingFileHandler):
+            root.removeHandler(h)
+            h.close()
+    _CONFIGURED = False
diff --git a/tests/unit/test_gui_v6_logging_setup.py b/tests/unit/test_gui_v6_logging_setup.py
new file mode 100644
index 0000000..6c2cecd
--- /dev/null
+++ b/tests/unit/test_gui_v6_logging_setup.py
@@ -0,0 +1,16 @@
+import logging
+
+
+def test_setup_file_logging_writes_to_known_path(tmp_path, monkeypatch):
+    monkeypatch.setenv("LOCALAPPDATA", str(tmp_path))
+    from gui_v6.logging_setup import setup_file_logging, _reset_for_tests
+
+    try:
+        log_path = setup_file_logging()
+        assert log_path.parent.exists()
+        logging.getLogger("test.e1").warning("ligne-temoin-42")
+        for h in logging.getLogger().handlers:
+            h.flush()
+        assert "ligne-temoin-42" in log_path.read_text(encoding="utf-8")
+    finally:
+        _reset_for_tests()