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文书模板 Admin 服务
处理Admin层的复杂业务逻辑
Requirements: 3.1, 3.2, 3.3
"""
import logging
from typing import Any
from django.utils.html import format_html, format_html_join
from django.utils.translation import gettext_lazy as _
from apps.core.exceptions import NotFoundError
from apps.core.utils.path import Path
from apps.documents.models.choices import DocumentTemplateType, LegalStatusMatchMode
logger = logging.getLogger(__name__)
class DocumentTemplateAdminService:
"""文书模板Admin服务"""
def __init__(self, template_service: Any | None = None) -> None:
self._template_service = template_service
@property
def template_service(self) -> Any:
"""延迟加载模板服务"""
if self._template_service is None:
from .template_service import DocumentTemplateService
self._template_service = DocumentTemplateService()
return self._template_service
def get_form_initial_values(self, instance: Any, existing_files: list[tuple[str, str]]) -> dict[str, Any]:
"""
获取表单初始值
Args:
instance: 模板实例
existing_files: 已有文件列表 [(path, display_name), ...]
Returns:
初始值字典
"""
initial = {
"template_type": instance.template_type,
"contract_sub_type": instance.contract_sub_type or "",
"case_sub_type": instance.case_sub_type or "",
"contract_types_field": instance.contract_types or [],
"case_types_field": instance.case_types or [],
"case_stage_field": "",
"existing_file": "",
"file_path": "",
"legal_statuses_field": instance.legal_statuses or [],
"legal_status_match_mode": instance.legal_status_match_mode or LegalStatusMatchMode.ANY,
}
case_stages = instance.case_stages or []
initial["case_stage_field"] = case_stages[0] if case_stages else ""
if instance.file_path:
current_path = instance.file_path
for path, _ in existing_files:
if path == current_path:
initial["existing_file"] = path
initial["file_path"] = ""
break
elif instance.file:
current_file_name = instance.file.name
for path, _ in existing_files:
if path == current_file_name:
initial["existing_file"] = path
break
return initial
def validate_file_sources(
self, existing_file: str, uploaded_file: Any, file_path: str, instance: Any, is_editing: bool
) -> dict[str, Any]:
"""
验证文件来源
Args:
existing_file: 从模板库选择的文件
uploaded_file: 上传的文件
file_path: 手动输入的路径
instance: 模板实例
is_editing: 是否是编辑模式
Returns:
验证结果字典,包含 is_valid, error, cleaned_data
"""
result = {
"is_valid": True,
"error": None,
"cleaned_data": {"existing_file": existing_file, "file": uploaded_file, "file_path": file_path},
}
if is_editing:
_original_file = instance.file
original_file_path = instance.file_path
file_modified = (
bool(existing_file) or bool(uploaded_file) or (file_path and file_path.strip() != original_file_path)
)
if not file_modified:
result["skip_file_validation"] = True
return result
sources = sum([bool(existing_file), bool(uploaded_file), bool(file_path and file_path.strip())])
if sources > 1:
result["is_valid"] = False
result["error"] = _("只能选择一种文件来源:从模板库选择、上传新文件、或手动输入路径")
return result
if existing_file:
result["cleaned_data"]["file_path"] = existing_file
result["cleaned_data"]["file"] = None
result["cleaned_data"]["existing_file"] = ""
has_file_source = bool(existing_file) or bool(uploaded_file) or bool(file_path and file_path.strip())
has_existing_file = is_editing and (instance.file or instance.file_path)
if not has_file_source and (not has_existing_file):
result["is_valid"] = False
result["error"] = _("必须选择一种文件来源")
return result
def validate_template_type(
self,
template_type: str,
contract_sub_type: str,
case_sub_type: str,
is_editing: bool,
original_template_type: str | None,
) -> dict[str, Any]:
"""
验证模板类型
Args:
template_type: 模板类型
contract_sub_type: 合同子类型
Returns:
验证结果字典
"""
result = {
"is_valid": True,
"errors": {},
"contract_sub_type": contract_sub_type,
"case_sub_type": case_sub_type,
}
if template_type == DocumentTemplateType.CONTRACT:
if not contract_sub_type:
result["is_valid"] = False
result["errors"]["contract_sub_type"] = _("选择合同文书模板时,必须选择合同子类型")
result["case_sub_type"] = None
elif template_type == DocumentTemplateType.CASE:
result["contract_sub_type"] = None
should_require_case_sub_type = not is_editing or (
original_template_type is not None and original_template_type != DocumentTemplateType.CASE
)
if should_require_case_sub_type and (not case_sub_type):
result["is_valid"] = False
result["errors"]["case_sub_type"] = _("选择案件文书模板时,必须选择案件文件子类型")
return result
def prepare_save_data(
self,
template_type: str,
contract_sub_type: str,
case_sub_type: str,
contract_types_field: list[str],
case_types_field: list[str],
case_stage_field: str,
file: Any,
file_path: str,
legal_statuses_field: list[str] | None = None,
legal_status_match_mode: str | None = None,
) -> dict[str, Any]:
"""
准备保存数据
Args:
template_type: 模板类型
contract_sub_type: 合同子类型
case_sub_type: 案件子类型
contract_types_field: 合同类型列表
case_types_field: 案件类型列表
case_stage_field: 案件阶段
file: 上传的文件
file_path: 文件路径
legal_statuses_field: 诉讼地位列表
legal_status_match_mode: 诉讼地位匹配模式
Returns:
准备好的数据字典
"""
data = {
"template_type": template_type,
"contract_sub_type": contract_sub_type if template_type == DocumentTemplateType.CONTRACT else None,
"case_sub_type": case_sub_type if template_type == DocumentTemplateType.CASE else None,
"contract_types": [],
"case_types": [],
"case_stages": [],
"legal_statuses": [],
"legal_status_match_mode": LegalStatusMatchMode.ANY,
"file": file,
"file_path": file_path,
}
if template_type == DocumentTemplateType.CONTRACT:
data["contract_types"] = contract_types_field or []
elif template_type == DocumentTemplateType.CASE:
data["case_types"] = case_types_field or []
data["case_stages"] = [case_stage_field] if case_stage_field else []
data["legal_statuses"] = legal_statuses_field or []
data["legal_status_match_mode"] = legal_status_match_mode or LegalStatusMatchMode.ANY
else:
data["contract_types"] = contract_types_field or []
data["case_types"] = case_types_field or []
data["case_stages"] = [case_stage_field] if case_stage_field else []
if file:
data["file_path"] = ""
elif file_path:
data["file"] = ""
return data
def render_placeholders_table(self, placeholders: list[str], undefined: set[str]) -> str:
"""渲染占位符表格HTML"""
if not placeholders:
return str(_("未找到占位符"))
rows = []
for placeholder in placeholders:
if placeholder in undefined:
status = format_html('<span style="color: #c62828; font-weight: bold;">{}</span>', "⚠️ 未定义")
row_style = "background: #ffebee;"
else:
status = format_html('<span style="color: #2e7d32;">{}</span>', "✓ 已定义")
row_style = ""
rows.append(
format_html(
'<tr style="{}"><td style="padding: 8px; border: 1px solid #ddd;'
' font-family: monospace;">{{{{ {} }}}}</td>'
'<td style="padding: 8px; border: 1px solid #ddd;">{}</td></tr>',
row_style,
placeholder,
status,
)
)
table = format_html(
'<div style="max-height: 300px; overflow-y: auto;">'
'<table style="width: 100%; border-collapse: collapse;">'
'<tr style="background: #f5f5f5;">'
'<th style="padding: 8px; text-align: left; border: 1px solid #ddd;">占位符</th>'
'<th style="padding: 8px; text-align: left; border: 1px solid #ddd;">状态</th>'
"</tr>{}</table></div>",
format_html_join("", "{}", ((r,) for r in rows)),
)
return str(table)
def render_undefined_placeholders_warning(self, undefined: list[str]) -> str:
"""渲染未定义占位符警告HTML"""
if not undefined:
return str(format_html('<span style="color: #2e7d32;">{}</span>', "✓ 所有占位符均已定义"))
items = format_html_join(
"",
'<li style="font-family: monospace; color: #bf360c;">{{{{ {} }}}}</li>',
((p,) for p in undefined),
)
result = format_html(
'<div style="background: #fff3e0; padding: 10px; border-radius: 4px; border: 1px solid #ffcc80;">'
'<p style="margin: 0 0 10px 0; color: #e65100; font-weight: bold;">'
"⚠️ 发现 {} 个未定义的占位符:</p>"
'<ul style="margin: 0; padding-left: 20px;">{}</ul>'
'<p style="margin: 10px 0 0 0; font-size: 12px; color: #666;">请在"替换词管理"中注册这些占位符.</p>'
"</div>",
len(undefined),
items,
)
return str(result)
def duplicate_template(self, template: Any) -> Any:
"""
复制文书模板
Args:
template: 要复制的模板
Returns:
新创建的模板
"""
from apps.documents.models import DocumentTemplate
new_name = f"{template.name} (副本)"
suffix = 1
while DocumentTemplate.objects.filter(name=new_name).exists():
new_name = f"{template.name} (副本 {suffix})"
suffix += 1
return DocumentTemplate.objects.create(
name=new_name,
template_type=template.template_type,
file_path=template.file_path,
contract_types=template.contract_types.copy() if template.contract_types else [],
case_types=template.case_types.copy() if template.case_types else [],
case_stages=template.case_stages.copy() if template.case_stages else [],
is_active=False,
)
def batch_duplicate_templates(self, queryset: Any) -> int:
"""
批量复制文书模板
Args:
queryset: 要复制的模板查询集
Returns:
复制的数量
"""
count = 0
for template in queryset:
self.duplicate_template(template)
count += 1
return count
def match_legal_status(
self,
template_legal_statuses: list[str],
case_legal_statuses: list[str],
match_mode: str = LegalStatusMatchMode.ANY,
) -> bool:
"""
检查案件诉讼地位是否匹配模板配置
实现三种匹配模式:
- any: 任意匹配,有交集即可
- all: 全部包含,案件诉讼地位包含模板所有配置
- exact: 完全一致,两者相等
Args:
template_legal_statuses: 模板配置的诉讼地位列表
case_legal_statuses: 案件的诉讼地位列表
match_mode: 匹配模式 ('any', 'all', 'exact')
Returns:
是否匹配
Validates: Requirements 3.2, 3.3, 3.4
"""
if not template_legal_statuses:
return True
if not case_legal_statuses:
return False
template_set = set(template_legal_statuses)
case_set = set(case_legal_statuses)
if match_mode == LegalStatusMatchMode.ANY:
return bool(template_set & case_set)
elif match_mode == LegalStatusMatchMode.ALL:
return template_set <= case_set
elif match_mode == "exact":
return template_set == case_set
else:
return bool(template_set & case_set)
def download_file(self, template: Any) -> tuple[Path, str]:
"""
检查文件存在性并返回文件路径和文件名
Args:
template: 文书模板实例
Returns:
(文件路径, 文件名) 元组
Raises:
NotFoundError: 文件不存在
"""
file_location: str = template.get_file_location()
if not file_location:
raise NotFoundError(
message=_("文件不存在"),
code="TEMPLATE_FILE_NOT_FOUND",
)
file_path = Path(file_location)
if not file_path.exists():
raise NotFoundError(
message=_("文件不存在"),
code="TEMPLATE_FILE_NOT_FOUND",
)
filename: str = file_path.name
return file_path, filename
def batch_activate(self, queryset: Any) -> int:
"""
批量启用模板
Args:
queryset: 要启用的模板查询集
Returns:
实际启用的数量
"""
return queryset.filter(is_active=False).update(is_active=True)
def batch_deactivate(self, queryset: Any) -> int:
"""
批量禁用模板
Args:
queryset: 要禁用的模板查询集
Returns:
实际禁用的数量
"""
return queryset.filter(is_active=True).update(is_active=False)
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