# -*- coding: utf-8 -*-
"""
租户管理后台 — Excel 上传 Pydantic Schema。

覆盖：4 种模板行数据模型、校验结果、冲突 diff、确认请求、上传记录。

需求: 5.2, 7.2, 8.4
"""

from __future__ import annotations

from typing import Literal

from pydantic import Field

from app.schemas.base import CamelModel


# ── 4 种模板行数据模型 ────────────────────────────────────


class ExpenseRow(CamelModel):
    """财务支出行数据。"""
    row_index: int = Field(..., description="行号（从 1 开始）")
    expense_month: str = Field(..., description="月份 YYYY-MM")
    category: str = Field(..., description="支出类别（8 值枚举）")
    amount: float = Field(..., description="金额（> 0，精度 2 位小数）")
    remark: str | None = Field(None, description="备注（可选，最长 500 字符）")


class PlatformIncomeRow(CamelModel):
    """团购收入行数据。"""
    row_index: int = Field(..., description="行号")
    income_month: str = Field(..., description="月份 YYYY-MM")
    platform_name: str = Field(..., description="平台名称")
    amount: float = Field(..., description="收入金额（> 0）")
    remark: str | None = Field(None, description="备注（可选，最长 500 字符）")


class SalaryAdjRow(CamelModel):
    """助教奖罚行数据。"""
    row_index: int = Field(..., description="行号")
    salary_month: str = Field(..., description="月份 YYYY-MM")
    assistant_name: str = Field(..., description="助教姓名")
    assistant_number: str = Field(..., description="助教编号")
    adjustment_type: str = Field(..., description="类型（扣款/奖金）")
    amount: float = Field(..., description="金额（> 0）")
    reason: str = Field(..., description="原因（非空，最长 200 字符）")
    assistant_id: int | None = Field(None, description="匹配到的助教 ID")


class RechargeCommissionRow(CamelModel):
    """充值业绩归属行数据。"""
    row_index: int = Field(..., description="行号")
    recharge_date: str = Field(..., description="充值日期 YYYY-MM-DD")
    member_name: str = Field(..., description="会员名称")
    recharge_amount: float = Field(..., description="充值金额（> 0）")
    assigned_assistant: str = Field(..., description="归属助教")
    reward_amount: float = Field(..., description="奖励金额（≥ 0）")
    assistant_id: int | None = Field(None, description="匹配到的助教 ID")


# ── 校验错误/警告 ─────────────────────────────────────────


class ValidationError(CamelModel):
    """单行校验错误。"""
    row_index: int = Field(..., description="行号")
    column: str = Field(..., description="列名")
    message: str = Field(..., description="错误描述")


class ValidationWarning(CamelModel):
    """单行校验警告（如人员匹配失败）。"""
    row_index: int = Field(..., description="行号")
    column: str = Field(..., description="列名")
    message: str = Field(..., description="警告描述")


class ValidationResult(CamelModel):
    """校验结果。"""
    errors: list[ValidationError] = Field(default_factory=list, description="错误列表")
    warnings: list[ValidationWarning] = Field(default_factory=list, description="警告列表")
    passed_rows: list[dict] = Field(default_factory=list, description="通过校验的行数据")
    upload_id: int | None = Field(None, description="上传批次 ID（校验全部通过时创建）")


# ── 冲突 diff ─────────────────────────────────────────────


class FieldDiff(CamelModel):
    """单字段差异。"""
    field: str = Field(..., description="字段名")
    old_value: str | None = Field(None, description="旧值")
    new_value: str | None = Field(None, description="新值")


class ConflictDiff(CamelModel):
    """冲突行 diff。"""
    row_index: int = Field(..., description="行号")
    field_diffs: list[FieldDiff] = Field(default_factory=list, description="逐字段差异")


# ── 确认请求 ──────────────────────────────────────────────


class Resolution(CamelModel):
    """单行冲突解决方案。"""
    row_index: int = Field(..., description="行号")
    action: Literal["replace", "keep"] = Field(..., description="操作：replace=替换/keep=保留")


class ConfirmRequest(CamelModel):
    """确认写入请求。"""
    upload_id: int = Field(..., description="上传批次 ID")
    resolutions: list[Resolution] = Field(default_factory=list, description="冲突解决方案列表")


# ── 上传记录 ──────────────────────────────────────────────


class UploadLogItem(CamelModel):
    """上传记录列表项。"""
    id: int
    site_id: int
    upload_type: str = Field(..., description="模板类型")
    file_name: str = Field(..., description="原始文件名")
    uploaded_by: int = Field(..., description="上传人 ID")
    row_count: int = Field(0, description="数据行数")
    conflict_count: int = Field(0, description="冲突行数")
    resolved_count: int = Field(0, description="已解决冲突数")
    status: str = Field(..., description="状态：pending/confirmed/failed")
    created_at: str | None = Field(None, description="上传时间")
    confirmed_at: str | None = Field(None, description="确认时间")