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 *

from .common_field_schema import base_fields, default_num_bytes


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

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

    type_id: Optional[int]
    type_name: Optional[str] = Field(
        alias='type'
    )
    name: Optional[str]
    description: Optional[str]

    image_url: Optional[str]
    image_small_url: Optional[str]

    unit_price: int = Field(0, ge=0, lt=1500000)
    tax_rate: Optional[int]
    lu_vat_id: Optional[int]
    vat_rate: Optional[int]
    max_quantity: Optional[int] = Field(0, ge=0, lt=150)

    recurring: Optional[bool] = False
    recurring_period: Optional[int]
    recurring_lu_unit_id: Optional[int]
    recurring_unit: Optional[str]

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

    lu_account_code_id: Optional[int]
    lu_account_code_deferred_id: Optional[int]

    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

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

    #@validator('product_id_random', always=True)
    def product_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 product_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='product')
        return None

    class Config:
        underscore_attrs_are_private = True
        fields = base_fields

Product_Base.update_forward_refs()