"""T+ 业务自动接入：源级开关与单据差异账本，不承载核算结果。"""

from datetime import date

from sqlalchemy import JSON, Date, Integer, String, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column

from app.models.base import BIGINT_UNSIGNED, TINYINT_TYPE, Base, TimestampMixin, mysql_table_args


class TPlusBusinessSyncConfig(Base, TimestampMixin):
    """每个源账套一条设置；启用后才按起点自动排队接入。"""

    __tablename__ = "tplus_business_sync_configs"
    __table_args__ = mysql_table_args(
        "T+业务自动接入设置",
        UniqueConstraint("source_database", name="uk_tplus_business_sync_configs_source"),
    )
    id: Mapped[int] = mapped_column(BIGINT_UNSIGNED, primary_key=True, autoincrement=True, comment="主键ID")
    source_database: Mapped[str] = mapped_column(String(128), comment="源账套")
    enabled: Mapped[int] = mapped_column(TINYINT_TYPE, server_default="0", comment="自动接入是否启用：1启用0关闭")
    start_date: Mapped[date] = mapped_column(Date, comment="业务接入起点")
    version: Mapped[int] = mapped_column(Integer, server_default="0", comment="配置乐观版本")
    updated_by: Mapped[int] = mapped_column(BIGINT_UNSIGNED, comment="授权启用账号")
    last_error: Mapped[str | None] = mapped_column(String(64), comment="后台接入暂停原因")


class TPlusBusinessDocument(Base, TimestampMixin):
    """源单线与正式单据的对应关系与差异结论；重复同步只更新本表。"""

    __tablename__ = "tplus_business_documents"
    __table_args__ = mysql_table_args(
        "T+业务单据接入与差异账本",
        UniqueConstraint(
            "source_database", "entity_type", "source_id",
            name="uk_tplus_business_documents_source_entity_id",
        ),
    )
    id: Mapped[int] = mapped_column(BIGINT_UNSIGNED, primary_key=True, autoincrement=True, comment="主键ID")
    source_database: Mapped[str] = mapped_column(String(128), comment="源账套")
    entity_type: Mapped[str] = mapped_column(String(32), comment="源实体")
    source_id: Mapped[str] = mapped_column(String(64), comment="源单据或明细ID")
    source_no: Mapped[str | None] = mapped_column(String(128), comment="原始单号")
    record_id: Mapped[int] = mapped_column(BIGINT_UNSIGNED, comment="当前观察到的源快照ID")
    applied_record_id: Mapped[int | None] = mapped_column(BIGINT_UNSIGNED, comment="已接入的源快照ID")
    fingerprint: Mapped[str | None] = mapped_column(String(64), comment="已应用的业务字段指纹")
    business_id: Mapped[int | None] = mapped_column(BIGINT_UNSIGNED, comment="关联业务ID")
    target_id: Mapped[int | None] = mapped_column(BIGINT_UNSIGNED, comment="正式单据或明细ID")
    status: Mapped[str] = mapped_column(String(24), default="PENDING", comment="APPLIED/PENDING/CONFLICT/EXCLUDED")
    reason: Mapped[str | None] = mapped_column(String(128), comment="固定待补或差异编码")
    data_json: Mapped[dict] = mapped_column(JSON, comment="最小必要来源与差异说明")