"""
===============================================================================
FILE: core/database.py
ROLE: Фасад ядра базы данных с полной обратной совместимостью импортов.
===============================================================================
"""

import os
import pandas as pd
from config import OUTPUT_DIR

from core.connection import get_connection, DB_PATH
from core.schema import init_all_tables

from core.repositories.scud_repo import (
    has_scud_logs_for_date,
    has_yesterday_final_snapshot,
    get_or_create_snapshot_id,
    save_scud_to_db,
    get_latest_snapshot_time,
    load_scud_from_db_by_snapshot,
    get_available_snapshots,
    delete_snapshot_by_id,
    delete_snapshots_by_date
)

from core.repositories.zup_repo import (
    save_staff_to_db,
    load_staff_from_db,
    save_absences_to_db,
    load_absences_from_db,
    save_anomalies_to_db,
    get_all_rules_from_db,
    add_rule_to_db,
    get_department_synonyms_dict,
    add_department_synonym_to_db
)

init_db = init_all_tables

def dump_database_to_excel(out_filename: str = "db_dump_full.xlsx") -> str:
    """Создает полный дамп всех ключевых таблиц SQLite в многостраничный Excel."""
    out_path = os.path.join(OUTPUT_DIR, out_filename)
    tables = [
        'scud_logs', 'scud_events_raw', 'zup_staff', 'zup_absences', 
        'anomalies_history', 'ai_knowledge_base', 'chat_messages', 
        'session_states', 'system_prompt_nodes', 'tasks', 
        'exceptions_registry', 'manual_absences', 'person_identity_mapping'
    ]
    with get_connection() as conn, pd.ExcelWriter(out_path, engine='openpyxl') as writer:
        for table in tables:
            try:
                df = pd.read_sql_query(f"SELECT * FROM {table}", conn)
                df.to_excel(writer, sheet_name=table[:31], index=False)
            except Exception:
                pass
    return out_path