from __future__ import annotations
import datetime, hashlib, logging, os, pytz, redis, secrets

from typing import Dict, List, Optional, Set, Union
from pydantic import BaseModel, EmailStr, Field, Json, PrivateAttr, ValidationError, validator

from app.db_sql import redis_lookup_id_random
from app.lib_general import log, logging

from app.models.common_field_schema import base_fields, default_num_bytes
from app.models.product_models import Product_Base


class Cont_Edu_Cert_Base(BaseModel):
    log.setLevel(logging.DEBUG) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
    log.debug(locals())

    id_random: Optional[str] = Field(
        **base_fields['cont_edu_cert_id_random'],
        alias = 'cont_edu_cert_id_random',
        default_factory = lambda:secrets.token_urlsafe(default_num_bytes),
    )
    id: Optional[int] = Field(
        alias = 'cont_edu_cert_id'
    )

    account_id_random: Optional[str]
    account_id: Optional[int]

    product_id_random: Optional[str]
    product_id: Optional[int]

    name: Optional[str]
    description: Optional[str]
    title: Optional[str]
    datetime_start: Optional[datetime.datetime]
    datetime_end: Optional[datetime.datetime]
    location: Optional[str]

    enable: Optional[bool] = False

    notes: Optional[str]
    created_on: Optional[datetime.datetime] = None
    updated_on: Optional[datetime.datetime] = None

    # Including other related objects
    cont_edu_cert_person_list: Optional[list] # Cont_Edu_Cert_Person_Base()
    product: Optional[Union[Product_Base, None]]

    _processed_at: datetime.datetime = PrivateAttr(default_factory=datetime.datetime.now)

    @validator('id', always=True)
    def cont_edu_cert_id_lookup(cls, v, values, **kwargs):
        log.setLevel(logging.WARNING)
        log.debug(locals())

        if values.get('id_random', None): # 'id_random' in values and values['id_random']:
            log.debug(values['id_random'])
            return redis_lookup_id_random(record_id_random=values['id_random'], table_name='cont_edu_cert')
        return None

    @validator('account_id', always=True)
    def account_id_lookup(cls, v, values, **kwargs):
        log.setLevel(logging.WARNING)
        log.debug(locals())

        if values['account_id_random']:
            return redis_lookup_id_random(record_id_random=values['account_id_random'], table_name='account')
        return None

    @validator('product_id', always=True)
    def product_id_lookup(cls, v, values, **kwargs):
        log.setLevel(logging.WARNING)
        log.debug(locals())

        if values.get('product_id_random', None): # values['product_id_random']:
            return redis_lookup_id_random(record_id_random=values['product_id_random'], table_name='product')
        return None

    class Config:
        underscore_attrs_are_private = True
        allow_population_by_field_name = True
        fields = base_fields