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 .common_field_schema import base_fields, default_num_bytes


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

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

    hash_sha256: Optional[str]
    title: Optional[str]
    description: Optional[str]

    version: Optional[int]

    directory_path: Optional[str]
    subdirectory_path: Optional[str] # NOTE: This will frequently only contain numbers, but it still needs to be a string
    filename: Optional[str]
    extension: Optional[str]
    content_type: Optional[str]
    mimetype: Optional[str]
    size: Optional[int] # In bytes

    cloud_storage: Optional[str]
    owner_user_id: Optional[int]
    group_user_id: Optional[str]

    package_name: Optional[str]

    already_exists: Optional[str] # This will probably only be populated on upload results
    copy_timer: Optional[str] # This will probably only be populated on upload results
    saved: Optional[str] # This will probably only be populated on upload results

    #metadata: Optional[str]

    #hide: Optional[int]
    #priority: Optional[int]
    #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_link_list: Optional[list] # Hosted_File_Base()

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

    #@validator('hosted_file_id_random', always=True)
    def hosted_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 hosted_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='hosted_file')
        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

    class Config:
        underscore_attrs_are_private = True
        fields = base_fields

Hosted_File_Base.update_forward_refs()