"""Validated external assessment inputs; no caller-supplied scores or roles."""

from datetime import date
from typing import Annotated, Literal

from pydantic import ConfigDict, Field, StringConstraints, field_validator, model_validator

from app.schemas.common import ApiSchema


class IntegrationSchema(ApiSchema):
    model_config = ConfigDict(extra="forbid", str_strip_whitespace=True)


class IntegrationOperator(IntegrationSchema):
    dingtalk_union_id: str | None = Field(default=None, min_length=1, max_length=64)
    external_user_id: str | None = Field(default=None, min_length=1, max_length=128)
    dingtalk_user_id: str | None = Field(default=None, min_length=1, max_length=50)
    employee_no: str | None = Field(default=None, max_length=64)
    name: str | None = Field(default=None, max_length=50)

    @model_validator(mode="after")
    def identity_source(self):
        if bool(self.dingtalk_union_id) == bool(self.external_user_id):
            raise ValueError("dingtalkUnionId 和 externalUserId 必须且只能提供一个")
        if self.external_user_id and self.dingtalk_user_id:
            raise ValueError("外部账号模式不能同时提供 dingtalkUserId")
        return self


class IntegrationProduct(IntegrationSchema):
    subject_id: str = Field(min_length=1, max_length=128)
    product_name: str | None = Field(default=None, max_length=200)
    product_category: str = Field(min_length=1, max_length=100)
    specification: str | None = Field(default=None, max_length=100)
    material_type: str = Field(min_length=1, max_length=200)
    supplier: str | None = Field(default=None, max_length=300)
    factory: str | None = Field(default=None, max_length=300)
    stage_new: Literal["需求发现", "产品立项", "产品开发", "量产上市", "产品生命管理"] | None = None
    defect_level: Literal["A", "B", "C"] | None = None
    description: str | None = Field(default=None, max_length=2000)
    as_of_date: date | None = None

    @field_validator("as_of_date", mode="before")
    @classmethod
    def iso_date(cls, value):  # noqa: ANN001
        if value is not None and (not isinstance(value, str) or len(value) != 10):
            raise ValueError("asOfDate 必须为 YYYY-MM-DD")
        if value is not None and date.fromisoformat(value).year < 1900:
            raise ValueError("asOfDate 不早于 1900-01-01")
        return value


RequestId = Annotated[str, StringConstraints(min_length=1, max_length=128, pattern=r"^[A-Za-z0-9_.:-]+$")]


class IntegrationRiskRequest(IntegrationSchema):
    request_id: RequestId
    source_system: str = Field(min_length=1, max_length=64, pattern=r"^[A-Za-z0-9_-]+$")
    operator: IntegrationOperator
    assessment: IntegrationProduct