import datetime, pytz

from typing import Dict, List, Optional, Set, Union
from pydantic import BaseModel, EmailStr, Field, Json, PrivateAttr, ValidationError, validator, root_validator

from app.db_sql import redis_lookup_id_random
from app.lib_general import log, logging, secure_hash_string

from app.models.common_field_schema import base_fields, default_num_bytes
from app.models.person_models import Person_Base
from app.models.user_models import User_Base


# ### BEGIN ### API Post Comment Models ### Post_Comment_Base() ###
# Updated 2024-11-13
class Post_Comment_Base(BaseModel):
    log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
    log.debug(locals())

    # --- Standardized Vision IDs (Strings) ---
    id: Optional[str] = Field(None, **base_fields['post_comment_id_random'])
    post_comment_id: Optional[str] = Field(None, **base_fields['post_comment_id_random'])
    post_id: Optional[str] = Field(None, **base_fields['post_id_random'])
    person_id: Optional[str] = Field(None, **base_fields['person_id_random'])
    user_id: Optional[str] = Field(None, **base_fields['user_id_random'])

    external_person_id: Optional[str] # Person ID generated by external system (should be stable and not change)

    title: Optional[str]
    content: Optional[str]

    anonymous: Optional[bool]
    full_name: Optional[str]
    email: Optional[str]
    notify: Optional[bool]
    # timezone: Optional[str]

    linked_li_json: Optional[Union[Json, None]]
    # cfg_json: Optional[Union[Json, None]]

    enable: Optional[bool]

    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
    person: Optional[Person_Base]
    user: Optional[User_Base]

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

    @root_validator(pre=True)
    def map_v3_ids(cls, values):
        """
        Vision Transformer:
        Map DB keys to clean API keys and strip internal integers.
        """
        # 1. Map Random Strings to Clean Names
        if rid := values.get('id_random') or values.get('post_comment_id_random'):
            values['id'] = rid
            values['post_comment_id'] = rid
            
        if p_rid := values.get('post_id_random'):
            values['post_id'] = p_rid
        if per_rid := values.get('person_id_random'):
            values['person_id'] = per_rid
        if u_rid := values.get('user_id_random'):
            values['user_id'] = u_rid
            
        # 2. Prevent "Collision Population"
        for k in ['id', 'post_id', 'person_id', 'user_id']:
            if k in values and not isinstance(values[k], str):
                del values[k]
                
        return values

    class Config:
        underscore_attrs_are_private = True
        allow_population_by_field_name = False
        fields = base_fields
# ### END ### API Post Comment Models ### Post_Comment_Base() ###