106 lines
4.3 KiB
Python
106 lines
4.3 KiB
Python
from __future__ import annotations
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import uuid
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from datetime import datetime
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from typing import Any
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from sqlalchemy import CheckConstraint, DateTime, Index, String, UniqueConstraint, func
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from sqlalchemy.orm import Mapped, mapped_column
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from sqlalchemy.types import JSON
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from app.db.base_class import Base
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class AIApplicationPreviewDecision(Base):
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"""费用申请落单前，由服务端签发并短期持有的不可变建议快照。"""
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__tablename__ = "ai_application_preview_decisions"
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__table_args__ = (
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UniqueConstraint(
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"tenant_id",
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"id",
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name="uq_ai_application_preview_decisions_tenant_id",
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),
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UniqueConstraint(
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"tenant_id",
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"actor_id",
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"auth_session_id",
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"issue_request_id",
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name="uq_ai_application_preview_decisions_issue_request",
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),
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CheckConstraint(
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"status IN ('issued', 'consumed', 'expired', 'revoked')",
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name="ck_ai_application_preview_decisions_status",
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),
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CheckConstraint(
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"decision_source IN ('heuristic', 'rule', 'hybrid', 'server_draft')",
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name="ck_ai_application_preview_decisions_source",
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),
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CheckConstraint(
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"consumed_action IS NULL OR consumed_action IN ('save_draft', 'submit')",
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name="ck_ai_application_preview_decisions_consumed_action",
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),
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CheckConstraint(
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"status != 'consumed' OR ("
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"consumed_action IS NOT NULL AND consumed_request_id IS NOT NULL AND "
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"consumed_claim_id IS NOT NULL AND consumed_business_event_id IS NOT NULL AND "
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"consumed_final_fingerprint IS NOT NULL AND consumed_at IS NOT NULL)",
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name="ck_ai_application_preview_decisions_consumed_fields",
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),
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CheckConstraint(
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"expires_at > created_at",
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name="ck_ai_application_preview_decisions_expiry",
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),
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Index(
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"ix_ai_application_preview_decisions_actor_status_expiry",
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"tenant_id",
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"actor_id",
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"status",
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"expires_at",
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),
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Index(
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"ix_ai_application_preview_decisions_conversation",
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"tenant_id",
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"conversation_id",
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"created_at",
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),
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)
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id: Mapped[str] = mapped_column(
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String(36),
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primary_key=True,
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default=lambda: str(uuid.uuid4()),
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)
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tenant_id: Mapped[str] = mapped_column(String(64), nullable=False)
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actor_id: Mapped[str] = mapped_column(String(120), nullable=False)
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auth_session_id: Mapped[str] = mapped_column(String(120), nullable=False)
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conversation_id: Mapped[str] = mapped_column(String(120), nullable=False, default="")
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decision_type: Mapped[str] = mapped_column(String(80), nullable=False)
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decision_source: Mapped[str] = mapped_column(String(20), nullable=False)
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field_keys_json: Mapped[list[str]] = mapped_column(JSON, nullable=False, default=list)
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field_fingerprints_json: Mapped[dict[str, str]] = mapped_column(
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JSON,
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nullable=False,
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default=dict,
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)
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snapshot_fingerprint: Mapped[str] = mapped_column(String(80), nullable=False)
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fingerprint_key_version: Mapped[str] = mapped_column(String(40), nullable=False)
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source_version_json: Mapped[dict[str, Any]] = mapped_column(
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JSON,
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nullable=False,
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default=dict,
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)
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status: Mapped[str] = mapped_column(String(20), nullable=False, default="issued")
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issue_request_id: Mapped[str] = mapped_column(String(120), nullable=False)
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consumed_action: Mapped[str | None] = mapped_column(String(30), nullable=True)
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consumed_request_id: Mapped[str | None] = mapped_column(String(120), nullable=True)
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consumed_claim_id: Mapped[str | None] = mapped_column(String(36), nullable=True)
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consumed_business_event_id: Mapped[str | None] = mapped_column(String(36), nullable=True)
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consumed_final_fingerprint: Mapped[str | None] = mapped_column(String(80), nullable=True)
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expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
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consumed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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server_default=func.now(),
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)
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