File size: 10,225 Bytes
b4f2238 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 | """Business logic services."""
from __future__ import annotations
import logging
from datetime import date
from decimal import Decimal
from typing import TYPE_CHECKING, Any, cast
from apps.documents.utils.formatters import format_currency, format_date, format_percentage, get_choice_display
# 当事人角色常量（对应 apps.contracts.models.PartyRole）
_ROLE_PRINCIPAL = "PRINCIPAL"
_ROLE_BENEFICIARY = "BENEFICIARY"
_ROLE_OPPOSING = "OPPOSING"
if TYPE_CHECKING:
from apps.core.interfaces import IContractService
logger = logging.getLogger(__name__)
class ContextBuilder:
"""
上下文构建器
从数据库提取数据并构建替换词上下文字典.
优先使用 EnhancedContextBuilder 进行上下文构建,
同时保留直接构建的能力以支持向后兼容.
"""
DEFAULT_DATE_FORMAT = "%Y年%m月%d日"
def __init__(
self,
date_format: str | None = None,
use_enhanced: bool = False,
contract_service: IContractService | None = None,
) -> None:
"""
初始化上下文构建器
Args:
date_format: 日期格式字符串
use_enhanced: 是否使用 EnhancedContextBuilder(默认 True)
contract_service: 合同服务(可选,用于依赖注入)
"""
self.date_format = date_format or self.DEFAULT_DATE_FORMAT
self._use_enhanced = use_enhanced
self._enhanced_builder = None
self._contract_service = contract_service
@property
def contract_service(self) -> IContractService:
"""延迟加载合同服务"""
if self._contract_service is None:
from apps.documents.services.infrastructure.wiring import get_contract_service
self._contract_service = get_contract_service()
return self._contract_service
@property
def enhanced_builder(self) -> Any:
"""延迟加载 EnhancedContextBuilder"""
if self._enhanced_builder is None:
from apps.documents.services.placeholders.context_builder import EnhancedContextBuilder
self._enhanced_builder = EnhancedContextBuilder() # type: ignore[no-untyped-call]
return self._enhanced_builder
def build_contract_context(self, contract_id: int) -> dict[str, Any]:
"""
构建合同相关的完整上下文
优先使用 EnhancedContextBuilder 通过占位符服务构建上下文,
如果失败则回退到直接构建模式.
Args:
contract_id: 合同 ID
Returns:
包含所有替换词的字典
"""
if self._use_enhanced:
try:
context = self.enhanced_builder.build_contract_context(contract_id)
if context:
logger.debug("使用 EnhancedContextBuilder 构建合同上下文成功,合同ID: %s", contract_id)
return cast(dict[str, Any], context)
except Exception as e:
logger.warning(
"EnhancedContextBuilder 构建失败,回退到直接构建模式: %s",
e,
extra={"contract_id": contract_id},
)
return self._build_contract_context_directly(contract_id)
def _build_contract_context_directly(self, contract_id: int) -> dict[str, Any]:
"""
直接从数据库构建合同上下文(向后兼容)
通过 ServiceLocator 获取合同数据,避免跨模块直接导入 Model.
Args:
contract_id: 合同 ID
Returns:
包含所有替换词的字典
"""
# 使用 ServiceLocator 获取合同服务,避免跨模块直接导入 Model
# Requirements: 1.3
contract_dto = self.contract_service.get_contract_with_details_internal(contract_id)
if contract_dto is None:
logger.warning("合同不存在: %s", contract_id)
return {}
# 从 DTO 构建上下文
context: dict[str, Any] = {
"contract_name": contract_dto.get("name") or "",
"contract_type": contract_dto.get("case_type_display") or "",
"contract_type_code": contract_dto.get("case_type") or "",
"contract_status": contract_dto.get("status_display") or "",
"contract_date": self._format_date(contract_dto.get("specified_date")),
"contract_start_date": self._format_date(contract_dto.get("start_date")),
"contract_end_date": self._format_date(contract_dto.get("end_date")),
"fee_mode": contract_dto.get("fee_mode_display") or "",
"fee_mode_code": contract_dto.get("fee_mode") or "",
"fixed_amount": self._format_currency(contract_dto.get("fixed_amount")),
"fixed_amount_raw": contract_dto.get("fixed_amount") or Decimal("0"),
"risk_rate": self._format_percentage(contract_dto.get("risk_rate")),
"risk_rate_raw": contract_dto.get("risk_rate") or Decimal("0"),
"custom_terms": contract_dto.get("custom_terms") or "",
"representation_stages": ", ".join(contract_dto.get("representation_stages") or []),
}
# 处理当事人信息
parties = contract_dto.get("contract_parties") or []
principals = [p for p in parties if p.get("role") == _ROLE_PRINCIPAL]
beneficiaries = [p for p in parties if p.get("role") == _ROLE_BENEFICIARY]
opposing = [p for p in parties if p.get("role") == _ROLE_OPPOSING]
def _get_client_field(party: dict[str, Any], field: str) -> str:
"""兼容嵌套 client 字典和扁平结构两种 DTO 格式"""
nested = party.get("client")
if isinstance(nested, dict):
return nested.get(field) or ""
# 扁平结构：client_name / id_number / phone / address 直接在 party 里
if field == "name":
return party.get("client_name") or ""
return party.get(field) or ""
if principals:
context.update(
{
"principal_name": _get_client_field(principals[0], "name"),
"principal_id_number": _get_client_field(principals[0], "id_number"),
"principal_phone": _get_client_field(principals[0], "phone"),
"principal_address": _get_client_field(principals[0], "address"),
"all_principals": [
{
"name": _get_client_field(p, "name"),
"id_number": _get_client_field(p, "id_number"),
}
for p in principals
],
}
)
else:
context.update(
{
"principal_name": "",
"principal_id_number": "",
"principal_phone": "",
"principal_address": "",
"all_principals": [],
}
)
if beneficiaries:
context.update(
{
"beneficiary_name": _get_client_field(beneficiaries[0], "name"),
"beneficiary_id_number": _get_client_field(beneficiaries[0], "id_number"),
}
)
else:
context.update({"beneficiary_name": "", "beneficiary_id_number": ""})
if opposing:
context.update(
{
"opposing_party_name": _get_client_field(opposing[0], "name"),
"all_opposing_parties": [_get_client_field(p, "name") for p in opposing],
}
)
else:
context.update({"opposing_party_name": "", "all_opposing_parties": []})
# 处理律师信息
assignments = contract_dto.get("assignments") or []
def _get_lawyer_field(assignment: dict[str, Any], field: str) -> str:
"""兼容嵌套 lawyer 字典和扁平结构两种 DTO 格式"""
nested = assignment.get("lawyer")
if isinstance(nested, dict):
return nested.get(field) or ""
# 扁平结构：lawyer_name / lawyer_phone / lawyer_license_no 直接在 assignment 里
if field in ("real_name", "username"):
return assignment.get("lawyer_name") or ""
if field == "phone":
return assignment.get("lawyer_phone") or ""
if field == "license_no":
return assignment.get("lawyer_license_no") or ""
return assignment.get(field) or ""
primary_assignment = next((a for a in assignments if a.get("is_primary")), None)
if primary_assignment:
context.update(
{
"primary_lawyer_name": _get_lawyer_field(primary_assignment, "real_name"),
"primary_lawyer_phone": _get_lawyer_field(primary_assignment, "phone"),
"primary_lawyer_license": _get_lawyer_field(primary_assignment, "license_no"),
}
)
elif assignments:
context.update(
{
"primary_lawyer_name": _get_lawyer_field(assignments[0], "real_name"),
"primary_lawyer_phone": _get_lawyer_field(assignments[0], "phone"),
"primary_lawyer_license": _get_lawyer_field(assignments[0], "license_no"),
}
)
else:
context.update({"primary_lawyer_name": "", "primary_lawyer_phone": "", "primary_lawyer_license": ""})
context["all_lawyers"] = [
{
"name": _get_lawyer_field(a, "real_name"),
"is_primary": bool(a.get("is_primary")),
}
for a in assignments
]
return context
def _format_date(self, value: date | None) -> str:
return format_date(value, self.date_format)
def _format_currency(self, value: Decimal | None) -> str:
return format_currency(value)
def _format_percentage(self, value: Decimal | None) -> str:
return format_percentage(value)
|