| """Business logic services.""" |
|
|
| from __future__ import annotations |
|
|
| from typing import Any |
|
|
| from django.utils.translation import gettext_lazy as _ |
|
|
| from apps.core.exceptions import ValidationException |
| from apps.documents.storage import resolve_docx_template_path |
|
|
|
|
| class DocumentTemplateValidationService: |
| def normalize_file_path(self, file_path: str | None) -> str | None: |
| if file_path is None: |
| return None |
| return file_path.strip() |
|
|
| def validate_file_path(self, file_path: str) -> bool: |
| if not file_path: |
| return False |
| try: |
| return bool(resolve_docx_template_path(file_path).is_file()) |
| except ValueError: |
| return False |
|
|
| def _require_valid_file_path(self, file_path: str) -> None: |
| try: |
| resolved = resolve_docx_template_path(file_path) |
| except ValueError as exc: |
| raise ValidationException( |
| message=_("文件路径无效，必须位于当前模板根目录内"), |
| code="INVALID_FILE_PATH", |
| errors={"file_path": "文件路径无效，必须位于当前模板根目录内"}, |
| ) from exc |
|
|
| if not resolved.is_file(): |
| raise ValidationException( |
| message=_("文件不存在: %(p)s") % {"p": file_path}, |
| code="INVALID_FILE_PATH", |
| errors={"file_path": f"文件不存在: {file_path}"}, |
| ) |
|
|
| def require_single_source(self, file: Any, file_path: str | None) -> str | None: |
| if not file and not file_path: |
| raise ValidationException( |
| message=_("必须提供上传文件或文件路径"), |
| code="INVALID_FILE_SOURCE", |
| errors={"file": "必须提供上传文件或文件路径"}, |
| ) |
|
|
| if file and file_path: |
| raise ValidationException( |
| message=_("不能同时提供上传文件和文件路径"), |
| code="INVALID_FILE_SOURCE", |
| errors={"file": "不能同时提供上传文件和文件路径"}, |
| ) |
|
|
| normalized_file_path = self.normalize_file_path(file_path) |
| if normalized_file_path: |
| self._require_valid_file_path(normalized_file_path) |
|
|
| return normalized_file_path |
|
|
| def validate_update_file_source(self, file: Any, file_path: str | None) -> str | None: |
| if file is not None and file_path is not None: |
| raise ValidationException( |
| message=_("不能同时提供上传文件和文件路径"), |
| code="INVALID_FILE_SOURCE", |
| errors={"file": "不能同时提供上传文件和文件路径"}, |
| ) |
|
|
| normalized_file_path = self.normalize_file_path(file_path) |
| file_changed = file is not None or file_path is not None |
| if file_changed and file is None: |
| if not normalized_file_path: |
| raise ValidationException( |
| message=_("文件路径不能为空"), |
| code="INVALID_FILE_PATH", |
| errors={"file_path": "文件路径不能为空"}, |
| ) |
| self._require_valid_file_path(normalized_file_path) |
|
|
| return normalized_file_path |
|
|
