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 Models ### Hosted_File_Base() ###
class Hosted_File_Base(BaseModel):
    log.setLevel(logging.INFO) # 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[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_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):
        if values['id_random']:
            return values['id_random']
        return None

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

    @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

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