"""证书 Schema"""
from pydantic import BaseModel, Field, field_validator
from datetime import date, datetime
from typing import Optional, List


# ============ 证书分类 Schema ============

class CertificateCategoryBase(BaseModel):
    name: str = Field(..., max_length=50)
    icon: str = Field(default="medal", max_length=50)
    color: str = Field(default="#FFB7C5", max_length=20)
    sort_order: int = Field(default=0)


class CertificateCategoryCreate(CertificateCategoryBase):
    pass


class CertificateCategoryUpdate(BaseModel):
    name: Optional[str] = Field(None, max_length=50)
    icon: Optional[str] = Field(None, max_length=50)
    color: Optional[str] = Field(None, max_length=20)
    sort_order: Optional[int] = None


class CertificateCategoryResponse(CertificateCategoryBase):
    id: int
    uuid: Optional[str] = None

    class Config:
        from_attributes = True


# ============ 证书 Schema ============

class CertificateBase(BaseModel):
    title: str = Field(..., max_length=200)
    category_id: Optional[int] = None
    image: Optional[str] = None
    issuer: Optional[str] = Field(None, max_length=200)
    issue_date: Optional[date] = None
    expiry_date: Optional[date] = None
    description: Optional[str] = None
    sort_order: int = Field(default=0)


class CertificateCreate(CertificateBase):
    pass


class CertificateUpdate(BaseModel):
    title: Optional[str] = Field(None, max_length=200)
    category_id: Optional[int] = None
    image: Optional[str] = None
    issuer: Optional[str] = Field(None, max_length=200)
    issue_date: Optional[date] = None
    expiry_date: Optional[date] = None
    description: Optional[str] = None
    sort_order: Optional[int] = None

    @property
    def clearable_fields(self) -> set:
        return {"description", "category_id", "image", "issuer", "issue_date", "expiry_date"}


class CertificateListResponse(CertificateBase):
    id: int
    uuid: Optional[str] = None
    created_at: datetime
    updated_at: datetime
    category: Optional[CertificateCategoryResponse] = None

    class Config:
        from_attributes = True


class CertificateDetailResponse(CertificateListResponse):
    pass