import datetime, pytz

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


# ### BEGIN ### API Hosted File Link Models ### Hosted_File_Link_Base() ###
class Hosted_File_Link_Base(BaseModel):
    log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
    log.debug(locals())

    # id_random: Optional[str] = Field(
    #     **base_fields['hosted_file_link_id_random'],
    #     alias = 'hosted_file_link_id_random',
    # )
    id: Optional[int] = Field(
        #alias = 'hosted_file_link_id'
    )
    account_id_random: Optional[str]
    account_id: Optional[int]

    hosted_file_id_random: Optional[str]
    hosted_file_id: Optional[int]

    link_to_type: Optional[str] # Should this be renamed to "link_to_obj_type" for clarity?
    link_to_id_random: Optional[str] # Should this be renamed to "link_to_obj_id_random" for clarity?
    link_to_id: Optional[int] # Should this be renamed to "link_to_obj_id" for clarity?

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

    # Including other related objects
    link_to: Optional[dict] # Should this be renamed to "link_to_obj" or leave off the "_obj"?

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

    @validator('account_id', always=True)
    def account_id_lookup(cls, v, values, **kwargs):
        if isinstance(v, int) and v > 0: return v
        elif id_random := values.get('account_id_random'):
            return redis_lookup_id_random(record_id_random=id_random, table_name='account')
        return None

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

        if values['link_to_id_random'] and values['link_to_type']:
            return redis_lookup_id_random(record_id_random=values['link_to_id_random'], table_name=values['link_to_type'])
        return None

    class Config:
        underscore_attrs_are_private = True
        allow_population_by_field_name = True
        fields = base_fields
# ### END ### API Hosted File Link Models ### Hosted_File_Link_Base() ###