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, 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.hosted_file_models import Hosted_File_Base


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

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

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

    for_type: Optional[str]
    for_id: Optional[int] # NOTE: This is reversed with for_id_random
    for_id_random: Optional[str] # NOTE: This is reversed with for_id

    event_id_random: Optional[str]
    event_id: Optional[int]
    event_exhibit_id_random: Optional[str]
    event_exhibit_id: Optional[int]
    event_location_id_random: Optional[str]
    event_location_id: Optional[int]
    event_presentation_id_random: Optional[str]
    event_presentation_id: Optional[int]
    event_presenter_id_random: Optional[str]
    event_presenter_id: Optional[int]
    event_session_id_random: Optional[str]
    event_session_id: Optional[int]
    event_track_id_random: Optional[str]
    event_track_id: Optional[int]

    filename: Optional[str]
    extension: Optional[str]
    title: Optional[str]
    description: Optional[str]

    lu_file_purpose_id: Optional[int]
    file_purpose: Optional[str]

    enable: Optional[bool]
    enable_from: Optional[datetime.datetime] = None
    enable_to: Optional[datetime.datetime] = None

    hide: Optional[bool]

    priority: Optional[bool]
    sort: Optional[int]
    group: Optional[str]

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

    # Including other related objects
    hosted_file: Optional[Union[Hosted_File_Base, None]]

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

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

        if values['id_random']:
            return values['id_random']
        return None

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

        if values['id_random']:
            log.debug(values['id_random'])
            return redis_lookup_id_random(record_id_random=values['id_random'], table_name='event_file')
        return None

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

        if values['hosted_file_id_random']:
            return redis_lookup_id_random(record_id_random=values['hosted_file_id_random'], table_name='hosted_file')
        return None

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

        if values['event_id_random']:
            return redis_lookup_id_random(record_id_random=values['event_id_random'], table_name='event')
        return None

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

        if values['event_location_id_random']:
            return redis_lookup_id_random(record_id_random=values['event_location_id_random'], table_name='event_location')
        return None

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

        if values['event_track_id_random']:
            return redis_lookup_id_random(record_id_random=values['event_track_id_random'], table_name='event_track')
        return None

    class Config:
        underscore_attrs_are_private = True
        fields = base_fields

    @validator('for_id_random', always=True)
    def for_id_random_lookup(cls, v, values, **kwargs):
        log.setLevel(logging.DEBUG)
        log.debug(locals())

        if values['for_id'] and values['for_type']:
            return lookup_id_random(record_id=values['for_id'], table_name=values['for_type'])
        return None

#Event_File_Base.update_forward_refs()