import datetime, pytz

from typing import Dict, List, Optional, Set, Union, ClassVar
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

from app.models.common_field_schema import base_fields, default_num_bytes


# ### BEGIN ### API Journal Entry Models ### Journal_Entry_Base() ###
class Journal_Entry_Base(BaseModel):
    log.setLevel(logging.INFO) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
    log.debug(locals())

    # --- Standardized Vision IDs (Strings) ---
    id: Optional[str] = Field(None, **base_fields['journal_entry_id_random'])
    journal_entry_id: Optional[str] = Field(None, **base_fields['journal_entry_id_random'])
    journal_id: Optional[str] = Field(None, **base_fields['journal_id_random'])
    account_id: Optional[str] = Field(None, **base_fields['account_id_random'])

    external_id: Optional[str] # ID generated by or for external systems (should be stable and not change)
    import_id: Optional[str] # Used for import purposes to track the source of the data
    code: Optional[str]

    for_type: Optional[str] # 'person', 'user', 'account', etc
    for_id: Optional[int] = Field(None, exclude=True)
    for_id_random: Optional[str]

    name: Optional[str]
    short_name: Optional[str]
    summary: Optional[str]
    outline: Optional[str]

    content: Optional[str]
    content_html: Optional[str]
    content_json: Optional[Union[Json, None]]
    content_encrypted: Optional[str]

    history: Optional[str] # Used to store the history of the journal entry content
    history_encrypted: Optional[str]

    passcode_hash: Optional[str] # Used to store the hash of the passcode for looking up the passcode

    template: Optional[bool] = False # If this is a template entry, it can be used to create new entries based on this template

    type_code: Optional[str] # 'log', 'tracking', 'personal', 'professional', etc
    topic_code: Optional[str]
    category_code: Optional[str]
    # keywords: Optional[str]
    tags: Optional[str]

    start_datetime: Optional[datetime.datetime]
    end_datetime: Optional[datetime.datetime]
    timezone: Optional[str] # = 'UTC' # Default to UTC
    seconds: Optional[int]

    location: Optional[str]
    latitude: Optional[float]
    longitude: Optional[float]

    billable: Optional[bool]
    bill_to: Optional[str]

    alert: Optional[bool] = False
    alert_msg: Optional[str] = None

    private: Optional[bool] = True
    public: Optional[bool] = False
    personal: Optional[bool] = True
    professional: Optional[bool] = False

    parent_id: Optional[str] = Field(None, **base_fields['journal_entry_id_random'])
    # parent_id_random: Optional[str]

    related_entry_id_random: Optional[List[str]]
    related_entry_id_li: Optional[List[int]] = Field(None, exclude=True)

    due_datetime: Optional[datetime.datetime]
    due_alert: Optional[bool]
    archive_on: Optional[datetime.datetime]
    archive: Optional[bool]

    passcode: Optional[str] # Used to read and write to the journal entry
    passcode_timeout: Optional[int] # Number of seconds before asking for the passcode again
    passcode_read: Optional[str] # Used to read the journal entry
    passcode_read_expire: Optional[int] # Number of seconds to expire the read passcode
    # passcode_write: Optional[str] # Used to write to the journal entry
    # passcode_write_expire: Optional[int] # Number of seconds to expire the write passcode

    url_kv_json: Optional[Union[Json, None]]
    data_json: Optional[Union[Json, None]] # Used to store additional data for the journal
    meta_json: Optional[Union[Json, None]] # Used to store additional data about the journal entry

    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
    default_qry_str: Optional[str] = None  # Default query string used for searching and filtering journal entries

    # Including other related objects
    # This is only for convenience. Probably going to keep unless it causes a problem.
    file_count: Optional[int]

    _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('journal_entry_id_random'):
            values['id'] = rid
            values['journal_entry_id'] = rid

        if j_rid := values.get('journal_id_random'):
            values['journal_id'] = j_rid

        if a_rid := values.get('account_id_random'):
            values['account_id'] = a_rid

        if p_rid := values.get('parent_id_random'):
            values['parent_id'] = p_rid

        # 2. Prevent "Collision Population"
        for k in ['id', 'journal_entry_id', 'journal_id', 'account_id', 'parent_id']:
            if k in values and not isinstance(values[k], str):
                del values[k]

        return values

    # Fields that are part of the model (for reading) but should not be saved to the DB table
    fields_to_exclude_from_db: ClassVar[list] = ['file_count']

    class Config:
        underscore_attrs_are_private = True
        allow_population_by_field_name = False
        fields = base_fields
# ### END ### API Journal Entry Models ### Journal_Entry_Base() ###