feat(backend): add ontology and orchestrator API endpoints
New endpoints: - server/src/app/api/v1/endpoints/ontology.py: ontology API - server/src/app/api/v1/endpoints/orchestrator.py: orchestrator API New schemas: - server/src/app/schemas/ontology.py: ontology data schemas - server/src/app/schemas/orchestrator.py: orchestrator data schemas - server/src/app/schemas/user_agent.py: user agent data schemas New services: - server/src/app/services/ontology.py: ontology business logic - server/src/app/services/orchestrator.py: orchestrator business logic - server/src/app/services/runtime_chat.py: runtime chat service - server/src/app/services/user_agent.py: user agent service New tests: - server/tests/test_ontology_service.py - server/tests/test_orchestrator_service.py - server/tests/test_user_agent_service.py
This commit is contained in:
caoxiaozhu
547
server/src/app/services/user_agent.py
Normal file
547
server/src/app/services/user_agent.py
Normal file
@@ -0,0 +1,547 @@
|
||||
from __future__ import annotations
|
||||
|
||||
import json
|
||||
import re
|
||||
|
||||
from sqlalchemy.orm import Session
|
||||
|
||||
from app.core.agent_enums import AgentAssetStatus, AgentAssetType
|
||||
from app.schemas.agent_asset import AgentAssetListItem
|
||||
from app.schemas.user_agent import (
|
||||
UserAgentCitation,
|
||||
UserAgentDraftPayload,
|
||||
UserAgentRequest,
|
||||
UserAgentResponse,
|
||||
UserAgentSuggestedAction,
|
||||
)
|
||||
from app.services.agent_assets import AgentAssetService
|
||||
from app.services.agent_foundation import AgentFoundationService
|
||||
from app.services.runtime_chat import RuntimeChatService
|
||||
|
||||
SCENARIO_LABELS = {
|
||||
"expense": "报销",
|
||||
"accounts_receivable": "应收",
|
||||
"accounts_payable": "应付",
|
||||
"knowledge": "知识",
|
||||
"unknown": "通用",
|
||||
}
|
||||
|
||||
RISK_REASON_MAP = {
|
||||
"duplicate_expense": "检测到同员工、同金额或近似单据存在重复提交迹象。",
|
||||
"amount_over_limit": "金额超过当前制度或预算阈值，需要补充例外说明。",
|
||||
"invoice_anomaly": "票据或附件完整性不满足当前规则要求，需要补件或人工复核。",
|
||||
"ar_overdue": "应收账款已出现逾期，存在回款延迟风险。",
|
||||
"ap_overdue": "应付付款已出现逾期，可能影响供应商履约或合作关系。",
|
||||
}
|
||||
|
||||
GENERIC_EXPENSE_PROMPTS = {
|
||||
"报销",
|
||||
"我要报销",
|
||||
"我想报销",
|
||||
"帮我报销",
|
||||
"我要申请报销",
|
||||
"发起报销",
|
||||
"提交报销",
|
||||
}
|
||||
|
||||
EXPLICIT_DRAFT_KEYWORDS = ("生成", "草稿", "起草", "创建", "发起", "准备")
|
||||
|
||||
EXPENSE_TYPE_LABELS = {
|
||||
"travel": "差旅",
|
||||
"hotel": "住宿",
|
||||
"transport": "交通",
|
||||
"meal": "餐费",
|
||||
"meeting": "会务",
|
||||
"entertainment": "招待",
|
||||
}
|
||||
|
||||
|
||||
class UserAgentService:
|
||||
def __init__(self, db: Session) -> None:
|
||||
self.db = db
|
||||
self.asset_service = AgentAssetService(db)
|
||||
self.runtime_chat_service = RuntimeChatService(db)
|
||||
|
||||
def respond(self, payload: UserAgentRequest) -> UserAgentResponse:
|
||||
AgentFoundationService(self.db).ensure_foundation_ready()
|
||||
citations = self._build_rule_citations(payload)
|
||||
suggested_actions = self._build_suggested_actions(payload)
|
||||
risk_flags = self._resolve_risk_flags(payload)
|
||||
draft_payload = (
|
||||
self._build_draft_payload(payload)
|
||||
if payload.ontology.intent == "draft"
|
||||
else None
|
||||
)
|
||||
|
||||
if payload.degraded and payload.tool_payload.get("message"):
|
||||
return UserAgentResponse(
|
||||
answer=str(payload.tool_payload["message"]),
|
||||
citations=citations,
|
||||
suggested_actions=suggested_actions,
|
||||
risk_flags=risk_flags,
|
||||
requires_confirmation=payload.requires_confirmation,
|
||||
)
|
||||
|
||||
guided_answer = self._build_guided_answer(payload)
|
||||
if guided_answer:
|
||||
return UserAgentResponse(
|
||||
answer=guided_answer,
|
||||
citations=citations,
|
||||
suggested_actions=suggested_actions,
|
||||
draft_payload=draft_payload,
|
||||
risk_flags=risk_flags,
|
||||
requires_confirmation=payload.requires_confirmation,
|
||||
)
|
||||
|
||||
fallback_answer = self._build_fallback_answer(
|
||||
payload,
|
||||
citations=citations,
|
||||
draft_payload=draft_payload,
|
||||
)
|
||||
answer = self._generate_answer_with_model(
|
||||
payload,
|
||||
citations=citations,
|
||||
suggested_actions=suggested_actions,
|
||||
risk_flags=risk_flags,
|
||||
draft_payload=draft_payload,
|
||||
fallback_answer=fallback_answer,
|
||||
)
|
||||
|
||||
return UserAgentResponse(
|
||||
answer=answer or fallback_answer,
|
||||
citations=citations,
|
||||
suggested_actions=suggested_actions,
|
||||
draft_payload=draft_payload,
|
||||
risk_flags=risk_flags,
|
||||
requires_confirmation=payload.requires_confirmation,
|
||||
)
|
||||
|
||||
def _build_fallback_answer(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
*,
|
||||
citations: list[UserAgentCitation],
|
||||
draft_payload: UserAgentDraftPayload | None,
|
||||
) -> str:
|
||||
if payload.ontology.intent in {"query", "compare"}:
|
||||
return self._build_query_answer(payload)
|
||||
|
||||
if payload.ontology.intent == "risk_check":
|
||||
return self._build_risk_answer(payload, citations)
|
||||
|
||||
if payload.ontology.intent == "draft" and draft_payload is not None:
|
||||
return (
|
||||
f"已生成 {draft_payload.title}，当前仅返回待人工确认的草稿内容，"
|
||||
"仍需人工确认后再进入正式流程。"
|
||||
)
|
||||
|
||||
return self._build_explain_answer(payload, citations)
|
||||
|
||||
def _build_guided_answer(self, payload: UserAgentRequest) -> str | None:
|
||||
if not self._is_generic_expense_prompt(payload):
|
||||
return self._build_implicit_expense_draft_guidance(payload)
|
||||
|
||||
attachment_names = self._resolve_attachment_names(payload)
|
||||
attachment_hint = ""
|
||||
if attachment_names:
|
||||
attachment_hint = (
|
||||
f" 我已带入 {len(attachment_names)} 份附件名称，但目前还不能直接读取附件内容，"
|
||||
"仍需要你补充关键信息。"
|
||||
)
|
||||
|
||||
return (
|
||||
"可以帮你发起报销。请补充费用类型、发生时间、金额、事由和相关对象，"
|
||||
"或者直接上传票据附件，我再继续帮你判断能否报、缺什么材料以及生成报销草稿。"
|
||||
f"{attachment_hint}"
|
||||
)
|
||||
|
||||
def _build_implicit_expense_draft_guidance(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
) -> str | None:
|
||||
if not self._is_implicit_expense_draft_request(payload):
|
||||
return None
|
||||
|
||||
amount_text = next(
|
||||
(item.value for item in payload.ontology.entities if item.type == "amount"),
|
||||
"",
|
||||
)
|
||||
expense_type = next(
|
||||
(
|
||||
EXPENSE_TYPE_LABELS.get(item.normalized_value, item.value)
|
||||
for item in payload.ontology.entities
|
||||
if item.type == "expense_type"
|
||||
),
|
||||
"报销",
|
||||
)
|
||||
time_text = payload.ontology.time_range.raw or "本次"
|
||||
amount_hint = f"，金额 {amount_text}" if amount_text else ""
|
||||
|
||||
return (
|
||||
f"已识别到一笔{time_text}的{expense_type}支出{amount_hint}。"
|
||||
"如果要继续生成报销草稿，还需要补充客户单位、参与人员、费用明细和票据附件。"
|
||||
"你也可以继续上传发票或图片，我会把这些信息带入后续对话。"
|
||||
)
|
||||
|
||||
def _generate_answer_with_model(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
*,
|
||||
citations: list[UserAgentCitation],
|
||||
suggested_actions: list[UserAgentSuggestedAction],
|
||||
risk_flags: list[str],
|
||||
draft_payload: UserAgentDraftPayload | None,
|
||||
fallback_answer: str,
|
||||
) -> str | None:
|
||||
messages = self._build_model_messages(
|
||||
payload,
|
||||
citations=citations,
|
||||
suggested_actions=suggested_actions,
|
||||
risk_flags=risk_flags,
|
||||
draft_payload=draft_payload,
|
||||
fallback_answer=fallback_answer,
|
||||
)
|
||||
return self._sanitize_model_answer(
|
||||
self.runtime_chat_service.complete(
|
||||
messages,
|
||||
max_tokens=420,
|
||||
temperature=0.2,
|
||||
)
|
||||
)
|
||||
|
||||
def _sanitize_model_answer(self, answer: str | None) -> str | None:
|
||||
if not answer:
|
||||
return None
|
||||
|
||||
cleaned = re.sub(r"<think>.*?</think>", "", answer, flags=re.DOTALL | re.IGNORECASE)
|
||||
cleaned = cleaned.strip()
|
||||
return cleaned or None
|
||||
|
||||
def _build_model_messages(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
*,
|
||||
citations: list[UserAgentCitation],
|
||||
suggested_actions: list[UserAgentSuggestedAction],
|
||||
risk_flags: list[str],
|
||||
draft_payload: UserAgentDraftPayload | None,
|
||||
fallback_answer: str,
|
||||
) -> list[dict[str, str]]:
|
||||
facts = {
|
||||
"run_id": payload.run_id,
|
||||
"user_message": payload.message,
|
||||
"ontology": payload.ontology.model_dump(mode="json"),
|
||||
"context": {
|
||||
"entry_source": payload.context_json.get("entry_source"),
|
||||
"user_name": payload.context_json.get("name"),
|
||||
"user_role": payload.context_json.get("role"),
|
||||
"request_context": payload.context_json.get("request_context"),
|
||||
"attachment_count": payload.context_json.get("attachment_count"),
|
||||
"attachment_names": self._resolve_attachment_names(payload),
|
||||
},
|
||||
"tool_payload": payload.tool_payload,
|
||||
"citations": [item.model_dump(mode="json") for item in citations],
|
||||
"suggested_actions": [
|
||||
item.model_dump(mode="json") for item in suggested_actions
|
||||
],
|
||||
"risk_flags": risk_flags,
|
||||
"draft_payload": (
|
||||
draft_payload.model_dump(mode="json")
|
||||
if draft_payload is not None
|
||||
else None
|
||||
),
|
||||
"selected_capability_codes": payload.selected_capability_codes,
|
||||
"requires_confirmation": payload.requires_confirmation,
|
||||
"fallback_answer": fallback_answer,
|
||||
}
|
||||
|
||||
system_prompt = (
|
||||
"你是企业财务共享场景中的中文智能助手，负责和最终用户直接对话。"
|
||||
"你只能基于提供的事实回答，不能编造制度、流程结果或附件内容。"
|
||||
"如果用户问题很笼统，例如“我要报销”，优先告诉用户你可以协助什么，"
|
||||
"并明确要求补充费用类型、金额、时间、事由、参与对象或上传票据。"
|
||||
"如果上下文里只有附件名称，必须明确说明你只拿到了附件名称，"
|
||||
"不能假装已看过图片、PDF 或发票内容。"
|
||||
"不要声称已经提交、审批、付款、入账或真正执行了任何动作；如果只是建议、草稿或待确认，要明确说清楚。"
|
||||
"若给出了风险标签、制度引用或建议动作，可以简洁吸收进回答，但不要新增未提供的事实。"
|
||||
"只输出最终给用户看的自然语言，不要输出 JSON、Markdown、标题、"
|
||||
"<think> 标签或任何中间推理。"
|
||||
"使用简体中文，控制在 2 到 4 句。"
|
||||
)
|
||||
user_prompt = (
|
||||
"请根据以下事实生成最终答复，优先保持准确、具体、可执行：\n"
|
||||
f"{json.dumps(facts, ensure_ascii=False, indent=2)}"
|
||||
)
|
||||
return [
|
||||
{"role": "system", "content": system_prompt},
|
||||
{"role": "user", "content": user_prompt},
|
||||
]
|
||||
|
||||
def _build_query_answer(self, payload: UserAgentRequest) -> str:
|
||||
scenario = payload.ontology.scenario
|
||||
data = payload.tool_payload
|
||||
subject = self._resolve_subject(payload)
|
||||
|
||||
if scenario == "expense":
|
||||
record_count = int(data.get("record_count") or 0)
|
||||
total_amount = float(data.get("total_amount") or 0)
|
||||
return (
|
||||
f"{subject}共命中 {record_count} 笔报销，金额合计 {total_amount:.2f} 元。"
|
||||
"如需继续处理，可以查看明细或生成处理意见草稿。"
|
||||
)
|
||||
|
||||
if scenario == "accounts_receivable":
|
||||
record_count = int(data.get("record_count") or 0)
|
||||
outstanding_amount = float(data.get("outstanding_amount") or 0)
|
||||
return (
|
||||
f"{subject}共命中 {record_count} 条应收，未回款金额 {outstanding_amount:.2f} 元。"
|
||||
"建议结合账龄和客户分布继续排查逾期风险。"
|
||||
)
|
||||
|
||||
if scenario == "accounts_payable":
|
||||
record_count = int(data.get("record_count") or 0)
|
||||
outstanding_amount = float(data.get("outstanding_amount") or 0)
|
||||
return (
|
||||
f"{subject}共命中 {record_count} 条应付，待付金额 {outstanding_amount:.2f} 元。"
|
||||
"如需推进动作，建议先生成付款建议草稿并发起人工确认。"
|
||||
)
|
||||
|
||||
return "已完成当前查询，但暂时没有更多结构化结果可展示。"
|
||||
|
||||
def _build_explain_answer(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
citations: list[UserAgentCitation],
|
||||
) -> str:
|
||||
if citations:
|
||||
titles = "、".join(item.title for item in citations[:2])
|
||||
summary = citations[0].excerpt or "请结合制度全文进一步确认。"
|
||||
return f"已检索到相关依据：{titles}。核心说明：{summary}"
|
||||
|
||||
return (
|
||||
f"当前还没有与“{SCENARIO_LABELS.get(payload.ontology.scenario, '当前问题')}”"
|
||||
"强匹配的已上线规则引用，建议先人工复核或补充更具体的单据上下文。"
|
||||
)
|
||||
|
||||
def _build_risk_answer(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
citations: list[UserAgentCitation],
|
||||
) -> str:
|
||||
risk_flags = self._resolve_risk_flags(payload)
|
||||
if not risk_flags:
|
||||
return "当前未识别到明确风险标签，建议继续查看原始明细或补充更多上下文。"
|
||||
|
||||
reasons = [RISK_REASON_MAP.get(flag, f"{flag} 需要人工进一步确认。") for flag in risk_flags]
|
||||
citation_text = (
|
||||
f" 参考规则：{'、'.join(item.title for item in citations[:2])}。"
|
||||
if citations
|
||||
else ""
|
||||
)
|
||||
return (
|
||||
f"本次识别到 {len(risk_flags)} 类风险：{'、'.join(risk_flags)}。"
|
||||
f"触发原因：{'；'.join(reasons)}。"
|
||||
"建议先复核明细、附件和审批链，再决定是否继续处理。"
|
||||
f"{citation_text}"
|
||||
)
|
||||
|
||||
def _build_draft_payload(self, payload: UserAgentRequest) -> UserAgentDraftPayload:
|
||||
scenario_label = SCENARIO_LABELS.get(payload.ontology.scenario, "业务")
|
||||
subject = self._resolve_subject(payload)
|
||||
title = f"{scenario_label}处理意见草稿"
|
||||
body = (
|
||||
f"主题：{subject}\n"
|
||||
"结论：已根据当前语义解析结果生成草稿，尚未自动执行。\n"
|
||||
"建议：请先核对明细、规则命中和所需附件，再由人工确认是否提交正式流程。\n"
|
||||
f"原始问题：{payload.message}"
|
||||
)
|
||||
return UserAgentDraftPayload(
|
||||
draft_type=payload.ontology.scenario,
|
||||
title=title,
|
||||
body=body,
|
||||
confirmation_required=True,
|
||||
)
|
||||
|
||||
def _build_suggested_actions(
|
||||
self,
|
||||
payload: UserAgentRequest,
|
||||
) -> list[UserAgentSuggestedAction]:
|
||||
if self._is_generic_expense_prompt(payload):
|
||||
return [
|
||||
UserAgentSuggestedAction(
|
||||
label="上传票据",
|
||||
action_type="ask_clarification",
|
||||
description="上传发票、行程单或付款截图，继续识别报销内容。",
|
||||
),
|
||||
UserAgentSuggestedAction(
|
||||
label="补充报销信息",
|
||||
action_type="ask_clarification",
|
||||
description="补充费用类型、金额、时间和事由后继续处理。",
|
||||
),
|
||||
]
|
||||
|
||||
if payload.ontology.intent in {"query", "compare"}:
|
||||
return [
|
||||
UserAgentSuggestedAction(
|
||||
label="查看明细",
|
||||
action_type="open_detail",
|
||||
description="继续查看命中记录和过滤条件。",
|
||||
),
|
||||
UserAgentSuggestedAction(
|
||||
label="生成处理意见",
|
||||
action_type="create_draft",
|
||||
description="把当前查询结果整理成可确认草稿。",
|
||||
),
|
||||
]
|
||||
|
||||
if payload.ontology.intent == "risk_check":
|
||||
return [
|
||||
UserAgentSuggestedAction(
|
||||
label="人工复核风险",
|
||||
action_type="manual_review",
|
||||
description="优先检查明细、附件和规则命中原因。",
|
||||
),
|
||||
UserAgentSuggestedAction(
|
||||
label="生成整改建议",
|
||||
action_type="create_draft",
|
||||
description="把风险说明整理成处理意见草稿。",
|
||||
),
|
||||
]
|
||||
|
||||
if payload.ontology.intent == "draft":
|
||||
return [
|
||||
UserAgentSuggestedAction(
|
||||
label="复制草稿",
|
||||
action_type="copy_draft",
|
||||
description="复制当前草稿后交由人工确认。",
|
||||
),
|
||||
UserAgentSuggestedAction(
|
||||
label="补充上下文",
|
||||
action_type="ask_clarification",
|
||||
description="补充单据编号、客户或供应商信息以完善草稿。",
|
||||
),
|
||||
]
|
||||
|
||||
return [
|
||||
UserAgentSuggestedAction(
|
||||
label="查看规则全文",
|
||||
action_type="open_rule",
|
||||
description="继续查看引用规则或知识内容。",
|
||||
),
|
||||
UserAgentSuggestedAction(
|
||||
label="补充问题上下文",
|
||||
action_type="ask_clarification",
|
||||
description="补充业务对象、时间或单据范围，提升回答准确度。",
|
||||
),
|
||||
]
|
||||
|
||||
def _build_rule_citations(self, payload: UserAgentRequest) -> list[UserAgentCitation]:
|
||||
domain = self._resolve_domain(payload.ontology.scenario)
|
||||
items = self.asset_service.list_assets(
|
||||
asset_type=AgentAssetType.RULE.value,
|
||||
status=AgentAssetStatus.ACTIVE.value,
|
||||
domain=domain,
|
||||
)
|
||||
ranked = self._rank_rule_assets(items, payload)
|
||||
citations: list[UserAgentCitation] = []
|
||||
for item in ranked[:2]:
|
||||
detail = self.asset_service.get_asset(item.id)
|
||||
if detail is None:
|
||||
continue
|
||||
excerpt = self._extract_excerpt(str(detail.current_version_content or ""))
|
||||
citations.append(
|
||||
UserAgentCitation(
|
||||
source_type="rule",
|
||||
code=detail.code,
|
||||
title=detail.name,
|
||||
version=detail.current_version,
|
||||
updated_at=detail.updated_at.date().isoformat(),
|
||||
excerpt=excerpt,
|
||||
)
|
||||
)
|
||||
return citations
|
||||
|
||||
@staticmethod
|
||||
def _resolve_risk_flags(payload: UserAgentRequest) -> list[str]:
|
||||
tool_flags = payload.tool_payload.get("risk_flags")
|
||||
if isinstance(tool_flags, list) and tool_flags:
|
||||
return [str(item) for item in tool_flags]
|
||||
return [str(item) for item in payload.ontology.risk_flags]
|
||||
|
||||
@staticmethod
|
||||
def _resolve_subject(payload: UserAgentRequest) -> str:
|
||||
named_entities = [
|
||||
item.value
|
||||
for item in payload.ontology.entities
|
||||
if item.type in {"employee", "customer", "vendor", "project"}
|
||||
]
|
||||
if named_entities:
|
||||
return f"{'、'.join(named_entities)} 相关数据"
|
||||
return f"{SCENARIO_LABELS.get(payload.ontology.scenario, '当前')}场景数据"
|
||||
|
||||
@staticmethod
|
||||
def _is_generic_expense_prompt(payload: UserAgentRequest) -> bool:
|
||||
if payload.ontology.scenario != "expense":
|
||||
return False
|
||||
normalized_message = re.sub(r"\s+", "", payload.message)
|
||||
return normalized_message in GENERIC_EXPENSE_PROMPTS
|
||||
|
||||
@staticmethod
|
||||
def _is_implicit_expense_draft_request(payload: UserAgentRequest) -> bool:
|
||||
if payload.ontology.scenario != "expense" or payload.ontology.intent != "draft":
|
||||
return False
|
||||
|
||||
compact_message = re.sub(r"\s+", "", payload.message)
|
||||
if any(keyword in compact_message for keyword in EXPLICIT_DRAFT_KEYWORDS):
|
||||
return False
|
||||
|
||||
return True
|
||||
|
||||
@staticmethod
|
||||
def _resolve_attachment_names(payload: UserAgentRequest) -> list[str]:
|
||||
names = payload.context_json.get("attachment_names")
|
||||
if not isinstance(names, list):
|
||||
return []
|
||||
return [str(name) for name in names if str(name).strip()]
|
||||
|
||||
@staticmethod
|
||||
def _resolve_domain(scenario: str) -> str | None:
|
||||
if scenario == "expense":
|
||||
return "expense"
|
||||
if scenario == "accounts_receivable":
|
||||
return "ar"
|
||||
if scenario == "accounts_payable":
|
||||
return "ap"
|
||||
return None
|
||||
|
||||
@staticmethod
|
||||
def _rank_rule_assets(
|
||||
items: list[AgentAssetListItem],
|
||||
payload: UserAgentRequest,
|
||||
) -> list[AgentAssetListItem]:
|
||||
def score(item: AgentAssetListItem) -> tuple[int, str]:
|
||||
tags = {str(value) for value in item.scenario_json or []}
|
||||
weight = 0
|
||||
if payload.ontology.scenario in tags:
|
||||
weight += 3
|
||||
if payload.ontology.intent in tags:
|
||||
weight += 2
|
||||
for risk_flag in payload.ontology.risk_flags:
|
||||
if risk_flag in tags:
|
||||
weight += 4
|
||||
return weight, item.code
|
||||
|
||||
ranked = sorted(items, key=score, reverse=True)
|
||||
return [item for item in ranked if score(item)[0] > 0]
|
||||
|
||||
@staticmethod
|
||||
def _extract_excerpt(content: str) -> str:
|
||||
lines = [line.strip() for line in str(content).splitlines() if line.strip()]
|
||||
cleaned: list[str] = []
|
||||
for line in lines:
|
||||
normalized = re.sub(r"^[#>\-\*\d\.\s`]+", "", line).strip()
|
||||
if normalized:
|
||||
cleaned.append(normalized)
|
||||
if len(cleaned) >= 2:
|
||||
break
|
||||
return "；".join(cleaned[:2])
|
||||
Reference in New Issue
Block a user