import json
import os
import hashlib
import requests
from datetime import datetime

# Конфигурация
URL_PARSER_ROOT = "https://fazziclay.com/api/v1/vstu_schedule_parser_v2/parser.json"
BASE_URL_FILES = "https://fazziclay.com/api/v1/vstu_schedule_parser_v2/parsed/"
FILE_RESULT = "result.json"
FILE_CACHE = "raw_cache.json"
FILE_TO_AI = "to_ai.txt"
FILE_FROM_AI = "from_ai.txt"

def get_raw_hash(raw_list):
    normalized = "|".join(sorted([str(i).strip() for i in raw_list]))
    return hashlib.sha1(normalized.encode('utf-8')).hexdigest()

def load_json(filename, default):
    if os.path.exists(filename):
        with open(filename, 'r', encoding='utf-8') as f:
            try: return json.load(f)
            except: return default
    return default

def save_json(filename, data):
    with open(filename, 'w', encoding='utf-8') as f:
        json.dump(data, f, ensure_ascii=False, indent=2)

def process_ai_input(cache):
    if not os.path.exists(FILE_FROM_AI): return cache
    with open(FILE_FROM_AI, 'r', encoding='utf-8') as f:
        content = f.read().strip()
    if not content: return cache
    try:
        new_data = json.loads(content)
        for r_hash, resolved_obj in new_data.items():
            cache[r_hash] = resolved_obj
        print(f"[*] Добавлено {len(new_data)} записей из ИИ в кэш.")
        with open(FILE_FROM_AI, 'w', encoding='utf-8') as f: f.write("")
    except Exception as e:
        print(f"[!] Ошибка парсинга from_ai.txt: {e}")
    return cache

def main():
    print(f"--- Система Совместимости V1-V2 [{datetime.now().strftime('%H:%M:%S')}] ---")
    cache = load_json(FILE_CACHE, {})
    cache = process_ai_input(cache)
    save_json(FILE_CACHE, cache)

    try:
        parser_data = requests.get(URL_PARSER_ROOT).json()
    except Exception as e:
        print(f"[!] Ошибка сети: {e}"); return

    final_groups = {}
    unknown_raws = {}

    for file_info in parser_data.get("all_files", []):
        file_url = f"{BASE_URL_FILES}{requests.utils.quote(file_info['json_represent'])}"
        print(f"[*] Рендеринг: {file_info['json_represent']}")
        
        try: faculty_data = requests.get(file_url).json()
        except: continue

        sheets = faculty_data.get("sheets", {})
        for sheet_data in sheets.values():
            groups = sheet_data.get("groups", {})
            
            for group_id, group_data in groups.items():
                # Инициализация группы в формате V1
                if group_id not in final_groups:
                    final_groups[group_data["name"]] = {
                        "name": group_data["name"],
                        "facultet": faculty_data['excel']['facultet'],
                        "position": group_data.get("position"),
                        "position_human": group_data.get("position_human"),
                        "slots": {},
                        "data_source_hash": "TODO"
                    }
                
                slots = group_data.get("slots", {})
                for slot_key, pair_value in slots.items():
                    if not isinstance(pair_value, dict): continue
                    
                    if slot_key not in final_groups[group_data["name"]]["slots"]:
                        final_groups[group_data["name"]]["slots"][slot_key] = {}

                    for pair_key, pair_data in pair_value.items():
                        # Фильтр мета-ключей (пропускаем excel_range и т.д.)
                        if not (isinstance(pair_key, str) and '-' in pair_key): continue
                        
                        # НОВЫЙ БЛОК: Обработка списка событий (если пара раздвоена)
                        # Превращаем всё в список, даже если там один объект
                        events = pair_data if isinstance(pair_data, list) else [pair_data]
                        
                        for i, event in enumerate(events):
                            # Если событий больше одного, добавляем суффикс к ключу (напр. "5-6_1")
                            current_pair_id = pair_key if i == 0 else f"{pair_key}_{i}"
                            
                            # Теперь event — это гарантированно словарь
                            if not isinstance(event, dict): continue
                            
                            raw_list = event.get("raw", [])
                            r_hash = get_raw_hash(raw_list)

                            if r_hash in cache:
                                res = cache[r_hash]
                                
                                # Парсим списки
                                locs = [l.strip() for l in res.get("location", "").split(",")] if res.get("location") and res.get("location") != "Не указана" else []
                                leads = [l.strip() for l in res.get("teacher", "").split(",")] if res.get("teacher") and res.get("teacher") != "Не указан" else []

                                # Записываем в финальную структуру
                                final_groups[group_data["name"]]["slots"][slot_key][current_pair_id] = {
                                    "discipline_name": res.get("subject", "Не указан"),
                                    "locations": locs,
                                    "leads": leads,
                                    "is_solid": event.get("is_solid", True),
                                    "is_flow": event.get("is_flow", False),
                                    "raw": raw_list,
                                    "weekday": event.get("weekday"),
                                    "weeknum": event.get("weeknum"),
                                    "excel_range": event.get("excel_range"),
                                    "excel_pos": event.get("excel_pos")
                                }
                            else:
                                unknown_raws[r_hash] = raw_list

    # Управление to_ai.txt
    if unknown_raws:
        save_json(FILE_TO_AI, unknown_raws)
        print(f"[!] Найдено {len(unknown_raws)} новых записей. См. {FILE_TO_AI}")
    else:
        with open(FILE_TO_AI, 'w', encoding='utf-8') as f: f.write("")

    # Сохранение итогового результата
    output = {
        "actual_at": int(datetime.now().timestamp()),
        "groups": final_groups
    }
    save_json(FILE_RESULT, output)
    print(f"[*] Успешно: {FILE_RESULT} обновлен.")

if __name__ == "__main__":
    main()