from pydantic import BaseModel, Field
from typing import List, Optional, Dict, Any
from decimal import Decimal


class VoucherExportRequest(BaseModel):
    """账票エクスポート要求"""
    start_year: int = Field(..., ge=2000, le=2099)
    start_month: int = Field(..., ge=1, le=12)
    end_year: Optional[int] = Field(default=None)
    end_month: Optional[int] = Field(default=None)
    employee_ids: List[int] = Field(..., min_items=1)
    voucher_type: str = Field(default="all", pattern="^(all|salary|bonus)$")
    format: str = Field(default="preview", pattern="^(preview|csv|pdf)$")

    class Config:
        json_schema_extra = {
            "example": {
                "start_year": 2026,
                "start_month": 1,
                "end_year": 2026,
                "end_month": 3,
                "employee_ids": [1, 2],
                "voucher_type": "all",
                "format": "preview"
            }
        }


class VoucherDataSummary(BaseModel):
    """従業員ごとの个票摘要"""
    employee_id: int
    employee_code: str
    employee_name: str
    has_salary_data: bool
    has_bonus_data: bool
    salary_count: int = 0
    bonus_count: int = 0
    salary_months: List[str] = Field(default_factory=list)
    bonus_months: List[str] = Field(default_factory=list)

    class Config:
        from_attributes = True


class SalaryVoucherData(BaseModel):
    """給与個票"""
    employee_id: int
    employee_code: str
    employee_name: str
    payroll_year: int
    payroll_month: int
    # 勤怠情報
    working_days: Decimal = Decimal(0)
    working_hours: Decimal = Decimal(0)
    overtime_hours: Decimal = Decimal(0)
    holiday_hours: Decimal = Decimal(0)
    late_hours: Decimal = Decimal(0)
    absent_days: Decimal = Decimal(0)
    # 支給項目
    base_salary: Decimal = Decimal(0)
    overtime_pay: Decimal = Decimal(0)
    holiday_pay: Decimal = Decimal(0)
    commute_allowance: Decimal = Decimal(0)
    other_allowance: Decimal = Decimal(0)
    total_payment: Decimal = Decimal(0)
    # 控除項目
    health_insurance: Decimal = Decimal(0)
    care_insurance: Decimal = Decimal(0)
    pension_insurance: Decimal = Decimal(0)
    employment_insurance: Decimal = Decimal(0)
    income_tax: Decimal = Decimal(0)
    resident_tax: Decimal = Decimal(0)
    other_deduction: Decimal = Decimal(0)
    total_deduction: Decimal = Decimal(0)
    # 差引支給額
    net_payment: Decimal = Decimal(0)
    # レガシー互換性用
    gross_salary: Decimal = Decimal(0)
    total_deductions: Decimal = Decimal(0)
    net_salary: Decimal = Decimal(0)

    class Config:
        from_attributes = True


class BonusVoucherData(BaseModel):
    """賞与個票"""
    employee_id: int
    employee_code: str
    employee_name: str
    bonus_year: int
    bonus_month: int
    bonus_type: str = ""  # 夏季賞与/冬季賞与/決算賞与/その他
    # 支給項目
    base_bonus: Decimal = Decimal(0)  # 基本賞与額
    performance_bonus: Decimal = Decimal(0)  # 業績賞与
    other_bonus: Decimal = Decimal(0)  # その他賞与
    total_bonus: Decimal = Decimal(0)  # 総支給額
    # 控除項目
    health_insurance: Decimal = Decimal(0)
    care_insurance: Decimal = Decimal(0)
    pension_insurance: Decimal = Decimal(0)
    employment_insurance: Decimal = Decimal(0)
    income_tax: Decimal = Decimal(0)  # 賞与所得税
    other_deduction: Decimal = Decimal(0)
    total_deduction: Decimal = Decimal(0)
    # 差引支給額
    net_bonus: Decimal = Decimal(0)
    # レガシー互換性用
    bonus_amount: Decimal = Decimal(0)
    tax_amount: Decimal = Decimal(0)

    class Config:
        from_attributes = True


class VoucherExportResponse(BaseModel):
    """账票エクスポート応答"""
    status: str = Field(..., pattern="^(success|no_data|partial_data)$")
    has_data: bool
    message: str
    summary: List[VoucherDataSummary] = Field(default_factory=list)
    data: Dict[str, Any] = Field(default_factory=dict)

    class Config:
        json_schema_extra = {
            "example": {
                "status": "success",
                "has_data": True,
                "message": "✓ 成功查詢: 2位従業員有數據",
                "summary": [
                    {
                        "employee_id": 1,
                        "employee_code": "E001",
                        "employee_name": "田中太郎",
                        "has_salary_data": True,
                        "has_bonus_data": False,
                        "salary_count": 3,
                        "bonus_count": 0,
                        "salary_months": ["2026-01", "2026-02", "2026-03"],
                        "bonus_months": []
                    }
                ],
                "data": {
                    "salary": [],
                    "bonus": []
                }
            }
        }