"""
KPI 表單 Schemas
"""
from datetime import datetime
from decimal import Decimal
from typing import Optional, List
from pydantic import BaseModel

from app.schemas.employee import EmployeeSimple
from app.schemas.kpi_item import KPIItemCreate, KPIItemResponse, SelfEvalItem, ManagerEvalItem


class KPIPeriodBase(BaseModel):
    """KPI 期間基本資訊"""

    id: int
    code: str
    name: str


class KPIPeriodResponse(KPIPeriodBase):
    """KPI 期間回應"""

    start_date: str
    end_date: str
    setting_start: str
    setting_end: str
    self_eval_start: Optional[str]
    self_eval_end: Optional[str]
    manager_eval_start: Optional[str]
    manager_eval_end: Optional[str]
    status: str

    class Config:
        from_attributes = True


class KPISheetCreate(BaseModel):
    """建立 KPI 表單"""

    period_id: int
    items: List[KPIItemCreate]


class KPISheetUpdate(BaseModel):
    """更新 KPI 表單"""

    items: Optional[List[KPIItemCreate]] = None


class KPISheetResponse(BaseModel):
    """KPI 表單回應"""

    id: int
    employee: EmployeeSimple
    period: KPIPeriodBase
    department_id: int
    status: str
    items: List[KPIItemResponse]

    # 提交資訊
    submitted_at: Optional[datetime]

    # 審核資訊
    approved_by: Optional[int]
    approved_at: Optional[datetime]
    approve_comment: Optional[str]

    # 退回資訊
    rejected_by: Optional[int]
    rejected_at: Optional[datetime]
    reject_reason: Optional[str]

    # 自評資訊
    self_eval_at: Optional[datetime]

    # 主管評核資訊
    manager_eval_by: Optional[int]
    manager_eval_at: Optional[datetime]
    manager_eval_comment: Optional[str]

    # 分數
    total_score: Optional[Decimal]

    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class KPISheetListItem(BaseModel):
    """KPI 表單列表項目"""

    id: int
    employee: EmployeeSimple
    period: KPIPeriodBase
    status: str
    total_score: Optional[Decimal]
    submitted_at: Optional[datetime]
    created_at: datetime

    class Config:
        from_attributes = True


class ApproveRequest(BaseModel):
    """審核通過請求"""

    comment: Optional[str] = None


class RejectRequest(BaseModel):
    """退回請求"""

    reason: str


class SelfEvalRequest(BaseModel):
    """自評請求"""

    items: List[SelfEvalItem]


class ManagerEvalRequest(BaseModel):
    """主管評核請求"""

    items: List[ManagerEvalItem]
    comment: Optional[str] = None


# KPI 範本相關
class KPITemplateResponse(BaseModel):
    """KPI 範本回應"""

    id: int
    code: str
    name: str
    category: str
    description: Optional[str]
    default_weight: int
    level0_desc: str
    level1_desc: str
    level2_desc: str
    level3_desc: str
    level4_desc: str
    is_active: bool

    class Config:
        from_attributes = True


class KPIPresetResponse(BaseModel):
    """KPI 預設組合回應"""

    id: int
    code: str
    name: str
    description: Optional[str]
    items: List[KPITemplateResponse]

    class Config:
        from_attributes = True