#!/usr/bin/env python
# -*- coding: utf-8 -*-

from datetime import datetime, date
from typing import Any, List, Optional

from pydantic import BaseModel
from sqlalchemy import asc, desc, text


class ListMixin(BaseModel):
    data: Optional[List[Any]] = None
    total: Optional[int] = None
    errcode: int = 0
    mess: str = "success"


class DetailMixin(BaseModel):
    data: Optional[Any] = None
    errcode: int = 0
    mess: str = "success"


class Datetime2Str(date):

    @classmethod
    def __get_validators__(cls):
        yield cls.validate

    @classmethod
    def validate(cls, v: datetime):
        if isinstance(v, datetime):
            return v.strftime("%Y-%m-%d %H:%M:%S")
        else:
            return ""


class Str2Datetime(date):

    @classmethod
    def __get_validators__(cls):
        yield cls.validate

    @classmethod
    def validate(cls, v: str):
        if len(v) == 10:
            _format_str = "%Y-%m-%d"
        else:
            _format_str = "%Y-%m-%d %H:%M:%S"
        try:
            v = datetime.strptime(v, _format_str)
        except Exception:
            raise ValueError
        else:
            return v


class OrderByField(str):

    @classmethod
    def __get_validators__(cls):
        yield cls.validate

    @classmethod
    def validate(cls, v: str):
        if v:
            fields = [x.strip() for x in v.split(",") if x.strip()]
            return list(
                map(
                    lambda x: desc(text(x[1:]))
                    if x.startswith("-") else asc(x), fields))
        else:
            return []


class ReturnField(str):

    @classmethod
    def __get_validators__(cls):
        yield cls.validate

    @classmethod
    def validate(cls, v: str):
        return [x.strip() for x in v.split(",") if x.strip()]


class Str2List(str):

    @classmethod
    def __get_validators__(cls):
        yield cls.validate

    @classmethod
    def validate(cls, v: str):
        return [x for x in v.split(";") if x.strip()]