"""Module schemas/subjects verifies table data type"""
from datetime import date
from datetime import datetime
from typing import List, Literal
from typing import Optional
from typing import Union

from pydantic import BaseModel
from pydantic import Field
from pydantic import validator

from schemas.trains import ShowTrain
from settings.config import settings

language = settings.config["lang"]
message_dict = settings.get_message()
message = message_dict[language]


def get_timestamp() -> datetime:
    return datetime.strptime(datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
                             "%Y-%m-%d %H:%M:%S")


class SubjectBase(BaseModel):
    """Subject Base Pydantic Model"""
    name: str
    id_card: Union[str, None]
    gender: Literal["男", "女"]
    birthday: date
    rehabilitation_parts: list
    remarks: str = ""

    @validator("birthday")
    def validate_birthday_date(cls, value):
        value = datetime.strptime(str(value), "%Y-%m-%d")
        if value > datetime.now() or value < datetime.strptime(
                "1880-01-01", "%Y-%m-%d"):
            raise ValueError(message["form_error_gender"])
        return value

    @validator("rehabilitation_parts")
    def validate_rehabilitation_parts_date(cls, value):
        if len(value) == 0 or len(value) > 4:
            raise ValueError(message["rehab_parts_length"])
        for part in value:
            if part not in ["左手", "右手", "左腿", "右腿"]:
                raise ValueError(message["rehab_parts_value_error"])
        return value


class SubjectUpdate(SubjectBase):
    pass


class SubjectCreate(SubjectBase):
    create_time: Optional[datetime] = Field(default_factory=get_timestamp)


class ShowSubject(BaseModel):
    """展示患者信息"""
    id: str
    name: str
    id_card: str
    age: int
    gender: str
    rehabilitation_parts: str
    create_time: datetime

    class Config():
        orm_mode = True


class ShowSubjectDetails(ShowSubject):
    """展示患者详情"""
    trains: List[ShowTrain]


class TodayStats(BaseModel):

    today_num_format: str


class SubjectIds(BaseModel):

    ids: List[str] = Field(...)