"""T+ 管理接口合同；只暴露范围、数量和受控核验结果。"""

from datetime import datetime
from typing import Literal
from uuid import UUID

from pydantic import BaseModel, Field, model_validator

from app.core.response import PageQuery

EntityType = Literal[
    "personnel",
    "products",
    "customers",
    "businesses",
    "shipments",
    "receipts",
    "business_items",
    "shipment_items",
    "receipt_items",
]
TaskType = Literal["READ", "AUDIT"]
TaskStatus = Literal["QUEUED", "RUNNING", "SUCCEEDED", "PARTIAL", "FAILED"]


class TPlusCreateIn(BaseModel):
    """创建长任务；幂等键是调用意图的一部分，必须由调用方保留。"""

    task_type: TaskType = "READ"
    entity_types: list[EntityType] = Field(default_factory=list, max_length=9)
    request_key: UUID

    @model_validator(mode="after")
    def check_scope(self):
        if self.task_type == "READ" and not self.entity_types:
            raise ValueError("请选择至少一种读取数据")
        if self.task_type == "AUDIT" and self.entity_types:
            raise ValueError("关联核验不接受自定义读取范围")
        if len(set(self.entity_types)) != len(self.entity_types):
            raise ValueError("读取类型不能重复")
        return self


class TPlusRetryIn(BaseModel):
    """失败批次重试不接受任意新范围。"""

    request_key: UUID


class TPlusBatchQuery(PageQuery):
    """批次筛选，与读取状态和任务类型保持一致。"""

    status: TaskStatus | None = None
    task_type: TaskType | None = None


class TPlusErrorQuery(PageQuery):
    """异常只能在指定批次内查询。"""

    entity_type: EntityType | None = None


class TPlusEntityProgress(BaseModel):
    entity_type: str
    total_records: int | None = None
    processed_records: int | None = None
    status: str = "WAITING"


class TPlusProgressOut(BaseModel):
    phase: str
    total_records: int | None = None
    processed_records: int = 0
    percentage: float | None = None
    active_entity: str | None = None
    updated_at: datetime | None = None
    elapsed_seconds: int = 0
    entities: list[TPlusEntityProgress] = Field(default_factory=list)


class TPlusBatchOut(BaseModel):
    """批次列表不包含原始数据、源配置或数据库异常。"""

    batch_no: str
    task_type: TaskType
    status: str
    entity_types: list[str] | None
    source_record_count: int
    staged_record_count: int
    skipped_record_count: int
    failed_record_count: int
    parent_batch_no: str | None
    create_time: datetime
    started_at: datetime | None
    finished_at: datetime | None
    can_retry: bool
    error_summary: str | None = None
    trigger_type: str = "MANUAL"
    automatic_attempt: int = 0
    progress: TPlusProgressOut | None = None


class TPlusBatchDetailOut(TPlusBatchOut):
    """详情按需携带受控的关联核验结果。"""

    audit_result: dict | None = None


class TPlusErrorOut(BaseModel):
    """异常使用固定说明，源定位仅开放整数 ID。"""

    id: int
    entity_type: str
    source_id: str | None
    error_code: str
    error_message: str
    retry_count: int
    create_time: datetime


class TPlusAutomationAlert(BaseModel):
    code: str
    message: str
    batch_no: str | None = None


class TPlusAutomationUpdate(BaseModel):
    enabled: bool = Field(strict=True)
    expected_version: int = Field(ge=0, strict=True)


class TPlusRuntimeUpdate(BaseModel):
    desired_state: Literal["RUNNING", "STOPPED"]
    expected_version: int = Field(ge=0, strict=True)


class TPlusRuntimeOut(BaseModel):
    desired_state: str = "STOPPED"
    actual_state: str = "OFFLINE"
    worker_phase: str = "UNKNOWN"
    heartbeat_at: datetime | None = None
    last_error: str | None = None
    host: str | None = None
    platform: str | None = None
    version: int = 0
    updated_by: int | None = None
    editable: bool = False


class TPlusAutomationOverview(BaseModel):
    enabled: bool = False
    version: int = 0
    editable: bool = False
    configuration_origin: str = "ENVIRONMENT"
    weekday: int = 0
    time: str = "02:00"
    timezone: str = "Asia/Shanghai"
    worker_phase: str = "UNKNOWN"
    heartbeat_at: datetime | None = None
    last_success_at: datetime | None = None
    next_retry_at: datetime | None = None
    stop_requested: bool = False
    alerts: list[TPlusAutomationAlert] = Field(default_factory=list)


class TPlusOverviewOut(BaseModel):
    """配置就绪不等同于源库连通或兼容验收通过。"""

    is_configured: bool
    configuration_message: str
    status_counts: dict[str, int]
    total_staged_records: int = 0
    current_batch: TPlusBatchOut | None = None
    compatibility_status: str = "PENDING"
    business_import_enabled: bool = False
    latest_audit: dict | None = None
    automation: TPlusAutomationOverview = Field(default_factory=TPlusAutomationOverview)