import json
import os
from datetime import datetime
from typing import Dict, List, Any, Optional
from dataclasses import asdict, dataclass
import pandas as pd

# ===============================================================
# CONFIG MANAGEMENT SYSTEM
# ===============================================================

@dataclass
class SimulatorConfig:
    """Конфигурация симулятора для сохранения и загрузки"""
    name: str
    description: str
    created_at: str
    
    # Настройки генератора
    max_history_orders: int = 5
    increment_difficulty: int = 2
    energy_chance: int = 90
    requirement_weights: str = "70,30"
    reduction_factor: int = 3
    increase_factor: int = 5
    
    # Симуляция
    iteration_count: int = 100
    initial_energy: int = 10000
    
    # Данные цепочек (JSON сериализованные)
    chain_data: List[Dict[str, Any]] = None
    energy_rewards_data: List[Dict[str, Any]] = None
    item_rewards_data: List[Dict[str, Any]] = None
    
    def to_dict(self) -> Dict[str, Any]:
        return asdict(self)
    
    @classmethod
    def from_dict(cls, data: Dict[str, Any]) -> 'SimulatorConfig':
        return cls(**data)

class ConfigManager:
    """Менеджер конфигураций симулятора"""
    
    def __init__(self, config_dir: str = "configs"):
        self.config_dir = config_dir
        self.ensure_config_dir()
    
    def ensure_config_dir(self):
        """Создает директорию для конфигураций если её нет"""
        if not os.path.exists(self.config_dir):
            os.makedirs(self.config_dir)
    
    def save_config(self, config: SimulatorConfig) -> str:
        """Сохраняет конфигурацию в файл"""
        filename = f"{config.name.replace(' ', '_').lower()}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.json"
        filepath = os.path.join(self.config_dir, filename)
        
        with open(filepath, 'w', encoding='utf-8') as f:
            json.dump(config.to_dict(), f, indent=2, ensure_ascii=False)
        
        return filepath
    
    def load_config(self, filepath: str) -> SimulatorConfig:
        """Загружает конфигурацию из файла"""
        with open(filepath, 'r', encoding='utf-8') as f:
            data = json.load(f)
        
        return SimulatorConfig.from_dict(data)
    
    def list_configs(self) -> List[Dict[str, str]]:
        """Возвращает список доступных конфигураций"""
        configs = []
        
        if not os.path.exists(self.config_dir):
            return configs
        
        for filename in os.listdir(self.config_dir):
            if filename.endswith('.json'):
                filepath = os.path.join(self.config_dir, filename)
                try:
                    config = self.load_config(filepath)
                    configs.append({
                        'name': config.name,
                        'description': config.description,
                        'created_at': config.created_at,
                        'filepath': filepath
                    })
                except Exception as e:
                    print(f"Error loading config {filename}: {e}")
        
        return sorted(configs, key=lambda x: x['created_at'], reverse=True)
    
    def delete_config(self, filepath: str) -> bool:
        """Удаляет конфигурацию"""
        try:
            os.remove(filepath)
            return True
        except Exception as e:
            print(f"Error deleting config: {e}")
            return False

def create_config_from_ui_state(
    name: str,
    description: str,
    chain_df,
    energy_rewards_df,
    item_rewards_df,
    max_history: int,
    increment_diff: int,
    energy_chance: int,
    req_weights: str,
    reduction_factor: int,
    increase_factor: int,
    iteration_count: int,
    initial_energy: int
) -> SimulatorConfig:
    """Создает конфигурацию из состояния UI"""
    
    # Преобразуем DataFrames в JSON-сериализуемые структуры
    chain_data = chain_df.to_dict('records') if chain_df is not None and not chain_df.empty else []
    energy_rewards_data = energy_rewards_df.to_dict('records') if energy_rewards_df is not None and not energy_rewards_df.empty else []
    item_rewards_data = item_rewards_df.to_dict('records') if item_rewards_df is not None and not item_rewards_df.empty else []
    
    return SimulatorConfig(
        name=name,
        description=description,
        created_at=datetime.now().isoformat(),
        max_history_orders=max_history,
        increment_difficulty=increment_diff,
        energy_chance=energy_chance,
        requirement_weights=req_weights,
        reduction_factor=reduction_factor,
        increase_factor=increase_factor,
        iteration_count=iteration_count,
        initial_energy=initial_energy,
        chain_data=chain_data,
        energy_rewards_data=energy_rewards_data,
        item_rewards_data=item_rewards_data
    )

def apply_config_to_ui(config: SimulatorConfig):
    """Применяет конфигурацию к состоянию UI"""
    
    # Восстанавливаем DataFrames
    chain_df = pd.DataFrame(config.chain_data) if config.chain_data else pd.DataFrame(columns=['ChainId', 'MergeItemId', 'RequirementWeight', 'RewardDifficulty'])
    energy_rewards_df = pd.DataFrame(config.energy_rewards_data) if config.energy_rewards_data else pd.DataFrame(columns=['DifficultyScore', 'Amount'])
    item_rewards_df = pd.DataFrame(config.item_rewards_data) if config.item_rewards_data else pd.DataFrame(columns=['DifficultyScore', 'Amount', 'MergeItemId', 'RewardWeight', 'ReductionFactor'])
    
    return (
        chain_df,
        config.max_history_orders,
        config.increment_difficulty,
        config.energy_chance,
        config.requirement_weights,
        config.reduction_factor,
        config.increase_factor,
        energy_rewards_df,
        item_rewards_df,
        config.iteration_count,
        config.initial_energy
    )