"""报表统计的请求/响应模型（M4 ⑤）。

金额与比例一律 `Decimal`（pydantic v2 序列化为字符串，零精度损失）；
比例原样输出 `rate_text`（如 88/9000），禁止转 float 或截断展示。
"""

from datetime import date
from decimal import Decimal

from pydantic import BaseModel, ConfigDict, Field, field_validator

from app.core.month import validate_month
from app.core.response import PageQuery


def _required_month(value: str) -> str:
    """必填月份：非法直接抛 ValueError，由 FastAPI 压成 400。"""
    return validate_month(value)


def _optional_month(value: str | None) -> str | None:
    """可选月份：空串规范为 None（axios 未剔除时也不会误报格式错误）。"""
    if value in (None, ""):
        return None
    return validate_month(value)


# ==== 查询入参 ====


class PersonalDetailQuery(PageQuery):
    """个人绩效明细查询条件（FR-029：人员/月份/客户类型/产品类别/岗位）。"""

    settlement_month: str | None = Field(default=None, max_length=7, description="归属月 YYYY-MM")
    personnel_id: int | None = Field(default=None, ge=1, description="人员筛选")
    customer_type: str | None = Field(default=None, max_length=32, description="客户类型筛选")
    product_category: str | None = Field(default=None, max_length=32, description="产品类别筛选")
    role_code: str | None = Field(default=None, max_length=32, description="岗位筛选")

    @field_validator("settlement_month")
    @classmethod
    def _v_settlement_month(cls, value: str | None) -> str | None:
        return _optional_month(value)


class DepartmentSummaryQuery(BaseModel):
    """部门汇总查询条件（月份必填——部门表按单月聚合，无跨月视角）。"""

    settlement_month: str = Field(min_length=7, max_length=7, description="归属月 YYYY-MM")
    manager_id: int | None = Field(default=None, ge=1, description="仅看某经理团队")

    @field_validator("settlement_month")
    @classmethod
    def _v_settlement_month(cls, value: str) -> str:
        return _required_month(value)


class BusinessStatsQuery(PageQuery):
    """业务统计查询条件；回款/绩效为该业务累计值，不随业务日期筛选而变。"""

    keyword: str | None = Field(default=None, max_length=64, description="业务编号/客户名称")
    customer_id: int | None = Field(default=None, ge=1, description="客户筛选")
    owner_personnel_id: int | None = Field(default=None, ge=1, description="归属人筛选")
    status: int | None = Field(default=None, description="业务状态筛选")
    date_from: date | None = Field(default=None, description="业务日期起")
    date_to: date | None = Field(default=None, description="业务日期止")


class PaymentStatsQuery(BaseModel):
    """回款统计查询条件（按回款天数区间/客户类型/产品类别统计，FR-031）。"""

    settlement_month: str | None = Field(default=None, max_length=7, description="归属月 YYYY-MM")
    date_from: date | None = Field(default=None, description="回款日期起")
    date_to: date | None = Field(default=None, description="回款日期止")
    customer_type: str | None = Field(default=None, max_length=32, description="客户类型筛选")
    product_category: str | None = Field(default=None, max_length=32, description="产品类别筛选")

    @field_validator("settlement_month")
    @classmethod
    def _v_settlement_month(cls, value: str | None) -> str | None:
        return _optional_month(value)


class PaymentDetailQuery(PageQuery):
    """回款区间下钻（桶编码必填，入参由 payment-stats 页面展开行携带）。"""

    bucket: str = Field(min_length=1, max_length=16, description="区间桶编码")
    settlement_month: str | None = Field(default=None, max_length=7, description="归属月 YYYY-MM")
    date_from: date | None = Field(default=None, description="回款日期起")
    date_to: date | None = Field(default=None, description="回款日期止")
    customer_type: str | None = Field(default=None, max_length=32, description="客户类型筛选")
    product_category: str | None = Field(default=None, max_length=32, description="产品类别筛选")

    @field_validator("settlement_month")
    @classmethod
    def _v_settlement_month(cls, value: str | None) -> str | None:
        return _optional_month(value)


# ==== 响应出参 ====


class ReportSummary(BaseModel):
    """全筛选口径合计（与「当前页合计」区分，前端页脚需注明）。

    字段按报表取用：个人明细用绩效/应付/折算毛利；业务统计用发货/回款/
    销售额；不涉及的留 None。
    """

    row_count: int = Field(default=0, description="筛选结果行数")
    performance_total: Decimal | None = Field(default=None, description="绩效金额合计")
    payable_total: Decimal | None = Field(default=None, description="应付绩效合计")
    converted_profit_total: Decimal | None = Field(default=None, description="折算毛利润合计")
    ship_total: Decimal | None = Field(default=None, description="发货额合计")
    received_total: Decimal | None = Field(default=None, description="回款额合计")
    sale_total: Decimal | None = Field(default=None, description="销售额合计")


class ReportPage[T](BaseModel):
    """报表分页：标准分页四字段 + 全筛选合计。

    序列化字段与 PageResult 一致（list/total/pageNum/pageSize），前端
    usePagedList 可直接消费；追加的 summary 由各页页脚单独读取。
    """

    model_config = ConfigDict(populate_by_name=True)

    records: list[T] = Field(
        default_factory=list, alias="list", serialization_alias="list", description="当前页数据"
    )
    total: int = Field(default=0, description="总记录数")
    page_num: int = Field(
        default=1, alias="pageNum", serialization_alias="pageNum", description="当前页码"
    )
    page_size: int = Field(
        default=10, alias="pageSize", serialization_alias="pageSize", description="每页条数"
    )
    summary: ReportSummary = Field(default_factory=ReportSummary, description="全筛选合计")


class PersonalDetailRow(BaseModel):
    """个人绩效明细行（需规 2.4.1 列全覆盖）。

    二次分摊拆行后同一回款按人多行（负责人余额行 + 参与人份额行），行内
    不放「关联回款金额」列——同回款金额重复展示会让合计无法自洽，金额
    下沉到快照下钻。
    """

    ledger_id: int
    business_id: int
    business_no: str
    personnel_id: int
    personnel_name: str
    role_code: str
    role_name: str
    customer_type: str
    product_category: str
    ship_date: date | None = None
    receipt_date: date
    payment_days: int | None = None
    rate_text: str
    weight_r: int | None = None
    payment_weight: Decimal | None = None
    performance_amount: Decimal | None = None
    payable_amount: Decimal | None = None
    converted_profit: Decimal | None = None
    is_probation: int
    missing_cost: int
    calc_version: int
    settlement_id: int | None = None


class DepartmentMemberRow(BaseModel):
    """部门汇总 · 团队成员明细（内联于团队行）。"""

    personnel_id: int
    personnel_name: str
    role_code: str
    is_probation: int
    member_kind: str = Field(
        default="regular",
        description="行来源：regular 普通台账 / manager_personal 经理个人户 / adjustment 仅调整单",
    )
    unassigned_reason: str | None = Field(
        default=None, description="未纳入团队基数的原因（仅未分配块）"
    )
    performance_sum: Decimal | None = None
    payable_sum: Decimal | None = None
    adjust_extra: Decimal = Field(default=Decimal("0"), description="调整单生效补发合计")
    adjust_deduct: Decimal = Field(default=Decimal("0"), description="调整单生效扣减合计")
    adjust_net: Decimal = Field(default=Decimal("0"), description="调整净额（补发为正）")
    net_total: Decimal | None = None
    ledger_ids: list[int] = Field(default_factory=list, description="台账行 id 列表（下钻锚点）")


class DepartmentTeamRow(BaseModel):
    """部门汇总 · 经理团队行。"""

    manager_id: int
    manager_name: str
    manager_status: int = Field(description="经理在职状态（1 在职 0 离职）")
    member_count: int
    team_base: Decimal = Field(description="团队基数（12.5% 的底，等于成员绩效合计）")
    team_share_amount: Decimal = Field(description="12.5% 团队分成（分列展示）")
    company_share_amount: Decimal = Field(
        description="单经理 5% 名义值；该团队无月结聚合行时为 0（不发放）"
    )
    has_aggregate: bool = Field(
        default=False, description="本月是否有月结聚合行（决定是否发放 5%）"
    )
    aggregate_amount: Decimal = Field(
        default=Decimal("0"),
        description="月结聚合行应发（12.5%+5% 一次舍入）；无聚合行时 0",
    )
    team_subtotal: Decimal = Field(
        default=Decimal("0"),
        description="团队应发小计 = 聚合行金额 + 调整净额",
    )
    company_base_ratio: Decimal = Field(description="团队基数占全公司基数比例（除零为 0）")
    adjust_extra: Decimal = Decimal("0")
    adjust_deduct: Decimal = Decimal("0")
    adjust_net: Decimal = Decimal("0")
    net_total: Decimal = Field(description="团队净额 = 团队应发小计")
    frozen_amount: Decimal | None = Field(default=None, description="月结聚合行冻结额（对照）")
    aggregate_ledger_id: int | None = None
    members: list[DepartmentMemberRow] = Field(default_factory=list)


class DepartmentCompanyBlock(BaseModel):
    """部门汇总 · 全公司口径块（FR-030「全公司 5% 部分单列」）。"""

    team_base_total: Decimal = Field(description="各团队基数之和（= 全部单笔绩效合计）")
    company_base: Decimal = Field(description="全公司基数（5% 的底）")
    company_share_pct: str = Field(description="分成比例参数原文")
    company_share_amount: Decimal = Field(description="单经理 5% 名义值")
    company_share_count: int = Field(
        default=0, description="计入应发的经理数（展示团队中有月结聚合行的数量）"
    )
    company_share_total: Decimal = Field(
        default=Decimal("0"), description="5% 合计 = 单份 × 计入次数"
    )


class DepartmentReconciliation(BaseModel):
    """部门汇总 · 对账块（导出/打印签字稿的合计口径，前端不自行求和）。

    应发合计 = 团队成员应付 + 未分配应付 + 各经理聚合行金额 + 调整净额。
    聚合行金额与月结 ``total_payable`` 同口径（12.5%+5% 一次舍入）；
    ``team_share_total`` 与 ``company_share_total`` 仅作分列展示，两者
    之和与聚合额的差记入 ``aggregate_rounding_diff``。
    """

    team_member_payable_total: Decimal = Field(description="展示团队成员的应付绩效合计")
    unassigned_payable_total: Decimal = Field(description="展示未分配人员的应付绩效合计")
    team_share_total: Decimal = Field(description="展示团队的 12.5% 分成合计（分列）")
    company_share_total: Decimal = Field(
        description="展示团队的全公司分成合计（每位有聚合行的经理各计一次，分列）"
    )
    aggregate_payable_total: Decimal = Field(
        description="展示团队的经理聚合行应发合计（12.5%+5% 一次舍入）"
    )
    aggregate_rounding_diff: Decimal = Field(
        default=Decimal("0"),
        description="聚合额 − 团队分成合计 − 全公司分成合计（分列舍入差）",
    )
    adjust_net_total: Decimal = Field(description="明细层调整净额合计（成员 + 未分配）")
    payable_total: Decimal = Field(
        description="应发合计 = 成员应付 + 未分配应付 + 聚合行 + 调整净额"
    )
    team_base_total: Decimal = Field(description="展示团队基数合计")
    unassigned_performance_total: Decimal = Field(description="展示未分配人员绩效合计")
    other_team_base: Decimal = Field(
        default=Decimal("0"), description="未展示的基数（其他团队 + 全公司未分配）"
    )
    other_team_member_payable_total: Decimal = Field(default=Decimal("0"))
    other_team_share_total: Decimal = Field(default=Decimal("0"))
    other_team_company_share_total: Decimal = Field(default=Decimal("0"))
    other_team_aggregate_total: Decimal = Field(default=Decimal("0"))
    other_adjust_net_total: Decimal = Field(default=Decimal("0"))
    company_base: Decimal = Field(description="全公司基数（5% 的底）")


class DepartmentSummaryOut(BaseModel):
    """部门绩效工资汇总响应（FR-030）。"""

    settlement_month: str
    params: dict | None = Field(default=None, description="分成参数原文与取值时点（对账用）")
    teams: list[DepartmentTeamRow] = Field(default_factory=list)
    unassigned: list[DepartmentMemberRow] = Field(
        default_factory=list, description="无经理人员的绩效（不参与分成，仅展示）"
    )
    company: DepartmentCompanyBlock | None = None
    reconciliation: DepartmentReconciliation | None = Field(
        default=None, description="签字稿对账块（应发公式各项）"
    )
    totals: dict = Field(default_factory=dict, description="全表合计（成员/团队对账自证）")


class BusinessStatsRow(BaseModel):
    """业务统计行（发货/回款/绩效为该业务累计值）。"""

    business_id: int
    business_no: str
    business_date: date | None = None
    status: int
    customer_name: str | None = None
    owner_personnel_name: str | None = None
    total_sale_amount: Decimal | None = None
    total_ship_amount: Decimal | None = None
    total_received_amount: Decimal | None = None
    performance_amount: Decimal | None = None
    payable_amount: Decimal | None = None


class BucketRow(BaseModel):
    """回款统计 · 区间桶行（空桶恒在且为 0，防金额静默消失）。"""

    code: str
    label: str
    min_days: int | None = None
    max_days: int | None = None
    receipt_amount: Decimal | None = None
    receipt_count: int = 0
    performance_amount: Decimal | None = None
    payable_amount: Decimal | None = None
    ledger_count: int = 0


class GroupRow(BaseModel):
    """回款统计 · 维度对比行（客户类型 / 产品类别）。"""

    code: str
    label: str
    receipt_amount: Decimal | None = None
    performance_amount: Decimal | None = None
    payable_amount: Decimal | None = None
    ledger_count: int = 0


class PaymentStatsOut(BaseModel):
    """回款情况统计响应（FR-031）。

    口径：已计提回款（有台账行）的金额与绩效；进度登记回款无台账行，
    不在本表（页面需注明）。
    """

    settlement_month: str | None = None
    buckets: list[BucketRow] = Field(default_factory=list)
    by_customer_type: list[GroupRow] = Field(default_factory=list)
    by_product_category: list[GroupRow] = Field(default_factory=list)
    totals: dict = Field(default_factory=dict, description="全表合计")


class PaymentDetailRow(BaseModel):
    """回款区间下钻行（行级展示回款金额与批次号）。"""

    ledger_id: int
    receipt_id: int | None = None
    receipt_batch_no: str | None = None
    amount: Decimal | None = Field(default=None, description="回款金额（同回款拆行重复展示）")
    business_id: int
    business_no: str
    personnel_id: int
    personnel_name: str
    customer_type: str
    product_category: str
    ship_date: date | None = None
    receipt_date: date
    payment_days: int | None = None
    performance_amount: Decimal | None = None
    payable_amount: Decimal | None = None