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config.py

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+import os
+from pathlib import Path
+from dotenv import load_dotenv
+
+BASE_DIR = Path(__file__).resolve().parent
+load_dotenv(BASE_DIR / '.env')
+
+
+def _normalize_sqlalchemy_db_url(raw: str | None) -> str:
+    if not raw:
+        return f"sqlite:///{(BASE_DIR / 'instance' / 'app.db').resolve()}"
+    if raw.startswith('sqlite:///') and not raw.startswith('sqlite:////'):
+        rel = raw.replace('sqlite:///', '', 1)
+        return f"sqlite:///{(BASE_DIR / rel).resolve()}"
+    return raw
+
+
+def _path_from_env(name: str, default: Path) -> Path:
+    raw = os.getenv(name)
+    if not raw:
+        return default
+    path = Path(raw)
+    return path if path.is_absolute() else (BASE_DIR / path).resolve()
+
+
+def _normalize_redis_url(raw: str | None) -> str:
+    if not raw:
+        return 'memory://'
+    raw = raw.strip()
+    if '://' not in raw:
+        raw = f'redis://{raw}'
+    return raw
+
+
+class Config:
+    SECRET_KEY = os.getenv('SECRET_KEY', 'change-me-please')
+    APP_MASTER_KEY = os.getenv('APP_MASTER_KEY', SECRET_KEY)
+    SQLALCHEMY_DATABASE_URI = _normalize_sqlalchemy_db_url(os.getenv('DATABASE_URL'))
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+    ARCHIVE_PATH = _path_from_env('ARCHIVE_PATH', BASE_DIR / 'storage' / 'archive')
+    PDF_PATH = _path_from_env('PDF_PATH', BASE_DIR / 'storage' / 'pdf')
+    BACKUP_PATH = _path_from_env('BACKUP_PATH', BASE_DIR / 'storage' / 'backups')
+    CERTS_PATH = _path_from_env('CERTS_PATH', BASE_DIR / 'storage' / 'certs')
+    APP_TIMEZONE = os.getenv('APP_TIMEZONE', 'Europe/Warsaw')
+    LOG_LEVEL = os.getenv('LOG_LEVEL', 'INFO')
+    APP_PORT = int(os.getenv('APP_PORT', '5000'))
+    REDIS_URL = _normalize_redis_url(os.getenv('REDIS_URL', ''))
+    WTF_CSRF_TIME_LIMIT = None
+    RATELIMIT_STORAGE_URI = REDIS_URL
+    APP_EXTERNAL_SCHEME = os.getenv('APP_EXTERNAL_SCHEME', 'http')
+    APP_EXTERNAL_HOST = os.getenv('APP_EXTERNAL_HOST', '')
+    PREFERRED_URL_SCHEME = APP_EXTERNAL_SCHEME
+    SESSION_COOKIE_SECURE = APP_EXTERNAL_SCHEME == 'https'
+    REMEMBER_COOKIE_SECURE = APP_EXTERNAL_SCHEME == 'https'
+    SESSION_COOKIE_HTTPONLY = True
+    REMEMBER_COOKIE_HTTPONLY = True
+    SESSION_COOKIE_SAMESITE = 'Lax'
+    #CEIDG_API_URL = os.getenv('CEIDG_API_URL', 'https://dane.biznes.gov.pl/api/ceidg/v2/firmy')
+    #CEIDG_TEST_API_URL = os.getenv('CEIDG_TEST_API_URL', 'https://test-dane.biznes.gov.pl/api/ceidg/v2/firmy')
+    APP_FOOTER_TEXT = 'KSeF Manager · linuxiarz.pl · Mateusz Gruszczyński'
+
+
+class TestConfig(Config):
+    TESTING = True
+    WTF_CSRF_ENABLED = False
+    SQLALCHEMY_DATABASE_URI = 'sqlite:///:memory:'
+    REDIS_URL = 'memory://'
+    RATELIMIT_STORAGE_URI = 'memory://'