243 lines
9.3 KiB
Python
243 lines
9.3 KiB
Python
"""AI 角色 Prompt 配置服务。"""
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from __future__ import annotations
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import json
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import re
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from datetime import datetime, timezone
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from typing import Any, Optional
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from sqlalchemy import and_, select
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from sqlalchemy.ext.asyncio import AsyncSession
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from ...config.ai_prompts import build_default_role_prompt_bundle
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from ...models import Integration
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from ...utils.timezone import now_cn_aware
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INTEGRATION_TYPE = "ai_prompt_profiles"
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ROLE_KEY_RE = re.compile(r"^[a-z0-9][a-z0-9_-]{1,31}$")
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MAX_ROLES = 12
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def _safe_json(value: Any) -> dict[str, Any]:
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if isinstance(value, dict):
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try:
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return json.loads(json.dumps(value))
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except Exception:
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return dict(value)
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if isinstance(value, str):
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try:
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parsed = json.loads(value)
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if isinstance(parsed, dict):
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return parsed
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except Exception:
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return {}
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return {}
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def _now_iso() -> str:
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return now_cn_aware().isoformat()
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class PromptProfileService:
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"""管理租户级 AI 角色 Prompt 配置。"""
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async def get_profiles(self, db: AsyncSession, *, tenant_id: int) -> dict[str, Any]:
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integration, bundle = await self._get_or_init_bundle(db, tenant_id=tenant_id)
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normalized = self._normalize_bundle(bundle)
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if normalized != bundle:
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integration.config = json.loads(json.dumps(normalized, ensure_ascii=False))
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integration.is_active = True
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await db.commit()
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return normalized
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async def update_profiles(
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self,
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db: AsyncSession,
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*,
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tenant_id: int,
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roles: list[dict[str, Any]],
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active_role_key: Optional[str] = None,
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) -> dict[str, Any]:
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if not roles:
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raise ValueError("至少需要保留一个角色")
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if len(roles) > MAX_ROLES:
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raise ValueError(f"角色数量不能超过 {MAX_ROLES} 个")
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dedup: dict[str, dict[str, Any]] = {}
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for idx, raw in enumerate(roles):
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key = str(raw.get("role_key") or "").strip().lower()
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if not key:
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raise ValueError(f"第 {idx + 1} 个角色缺少 role_key")
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if not ROLE_KEY_RE.match(key):
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raise ValueError(f"角色标识 {key} 格式不正确，仅支持小写字母/数字/_/-")
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if key in dedup:
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raise ValueError(f"角色标识重复: {key}")
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role_name = str(raw.get("role_name") or "").strip()
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system_prompt = str(raw.get("system_prompt") or "").strip()
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if not role_name:
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raise ValueError(f"角色 {key} 缺少角色名称")
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if len(role_name) > 32:
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raise ValueError(f"角色 {key} 名称过长（最多 32 字）")
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if len(system_prompt) < 20:
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raise ValueError(f"角色 {key} 的提示词过短（至少 20 字）")
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if len(system_prompt) > 8000:
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raise ValueError(f"角色 {key} 的提示词过长（最多 8000 字）")
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role = {
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"role_key": key,
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"role_name": role_name,
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"role_description": str(raw.get("role_description") or "").strip()[:300],
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"system_prompt": system_prompt,
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"enabled": bool(raw.get("enabled", True)),
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"updated_at": str(raw.get("updated_at") or _now_iso()),
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}
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dedup[key] = role
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ordered_roles = list(dedup.values())
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enabled_keys = [str(r["role_key"]) for r in ordered_roles if bool(r.get("enabled"))]
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if not enabled_keys:
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raise ValueError("至少需要启用一个角色")
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requested_active = str(active_role_key or "").strip().lower()
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if requested_active and requested_active in enabled_keys:
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active = requested_active
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else:
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active = enabled_keys[0]
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bundle = {
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"version": 1,
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"active_role_key": active,
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"roles": ordered_roles,
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"updated_at": _now_iso(),
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}
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integration, _ = await self._get_or_init_bundle(db, tenant_id=tenant_id)
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integration.config = json.loads(json.dumps(bundle, ensure_ascii=False))
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integration.is_active = True
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await db.commit()
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return self._normalize_bundle(bundle)
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async def get_active_role(self, db: AsyncSession, *, tenant_id: int) -> dict[str, Any]:
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data = await self.get_profiles(db, tenant_id=tenant_id)
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active_key = str(data.get("active_role_key") or "")
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roles = data.get("roles", [])
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if not isinstance(roles, list):
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roles = []
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active_role = next((r for r in roles if str(r.get("role_key")) == active_key), None)
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if active_role is None and roles:
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active_role = roles[0]
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return {
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"active_role_key": active_key,
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"role": active_role,
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}
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async def _get_or_init_bundle(
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self,
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db: AsyncSession,
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*,
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tenant_id: int,
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) -> tuple[Integration, dict[str, Any]]:
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result = await db.execute(
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select(Integration).where(
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and_(
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Integration.tenant_id == int(tenant_id),
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Integration.type == INTEGRATION_TYPE,
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)
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)
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)
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integration = result.scalar_one_or_none()
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if integration is None:
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bundle = self._normalize_bundle(build_default_role_prompt_bundle())
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integration = Integration(
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tenant_id=int(tenant_id),
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type=INTEGRATION_TYPE,
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config=json.loads(json.dumps(bundle, ensure_ascii=False)),
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is_active=True,
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)
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db.add(integration)
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await db.commit()
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return integration, bundle
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bundle = self._normalize_bundle(_safe_json(integration.config))
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return integration, bundle
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def _normalize_bundle(self, raw: dict[str, Any]) -> dict[str, Any]:
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defaults = build_default_role_prompt_bundle()
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default_roles_raw = defaults.get("roles", [])
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default_roles: dict[str, dict[str, Any]] = {}
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if isinstance(default_roles_raw, list):
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for row in default_roles_raw:
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if not isinstance(row, dict):
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continue
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key = str(row.get("role_key") or "").strip().lower()
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if key:
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default_roles[key] = {
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"role_key": key,
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"role_name": str(row.get("role_name") or key)[:32],
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"role_description": str(row.get("role_description") or "")[:300],
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"system_prompt": str(row.get("system_prompt") or "").strip(),
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"enabled": bool(row.get("enabled", True)),
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"updated_at": str(row.get("updated_at") or _now_iso()),
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}
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incoming_roles = raw.get("roles") if isinstance(raw.get("roles"), list) else []
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roles: list[dict[str, Any]] = []
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seen: set[str] = set()
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for item in incoming_roles:
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if not isinstance(item, dict):
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continue
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key = str(item.get("role_key") or "").strip().lower()
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if not key or key in seen or not ROLE_KEY_RE.match(key):
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continue
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seen.add(key)
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fallback = default_roles.get(key, {})
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prompt_text = str(item.get("system_prompt") or fallback.get("system_prompt") or "").strip()
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if len(prompt_text) < 20:
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prompt_text = str(fallback.get("system_prompt") or "").strip()
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if len(prompt_text) < 20:
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continue
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roles.append(
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{
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"role_key": key,
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"role_name": str(item.get("role_name") or fallback.get("role_name") or key).strip()[:32] or key,
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"role_description": str(item.get("role_description") or fallback.get("role_description") or "").strip()[:300],
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"system_prompt": prompt_text[:8000],
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"enabled": bool(item.get("enabled", fallback.get("enabled", True))),
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"updated_at": str(item.get("updated_at") or _now_iso()),
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}
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)
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if len(roles) >= MAX_ROLES:
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break
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if not roles:
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roles = list(default_roles.values())[:MAX_ROLES]
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enabled_keys = [str(r["role_key"]) for r in roles if bool(r.get("enabled"))]
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if not enabled_keys and roles:
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roles[0]["enabled"] = True
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enabled_keys = [str(roles[0]["role_key"])]
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active_raw = str(raw.get("active_role_key") or "").strip().lower()
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active_role_key = active_raw if active_raw in enabled_keys else (enabled_keys[0] if enabled_keys else str(roles[0]["role_key"]))
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return {
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"version": 1,
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"active_role_key": active_role_key,
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"roles": roles,
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"updated_at": str(raw.get("updated_at") or _now_iso()),
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"tips": {
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"active_role_key": "当前生效角色，影响 AI 回复语气与任务分派风格。",
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"system_prompt": "建议写清角色职责、回复风格、输出边界；支持后续扩展多个角色。",
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"role_key": "角色标识用于系统路由，保存后建议保持稳定。",
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},
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}
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prompt_profile_service = PromptProfileService()
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