"""
ConfigService - управление настройками приложения
"""
import json
import os
from typing import List, Optional
from dataclasses import dataclass, asdict


@dataclass
class AppConfig:
    """Конфигурация приложения"""
    cameras: List[str]
    lenses: List[str]
    celestial_bodies: List[str]
    last_watch_folder: str
    last_camera: str
    last_lens: str


class ConfigService:
    """Сервис для работы с конфигурацией"""

    SETTINGS_FILE = "astro_settings.json"
    CELESTIAL_BODIES_FILE = "celestial_bodies.json"

    def __init__(self):
        self.config = AppConfig(
            cameras=[],
            lenses=[],
            celestial_bodies=[],
            last_watch_folder="",
            last_camera="",
            last_lens=""
        )
        self.load_all()

    def load_all(self):
        """Загружает все настройки"""
        self._load_settings()
        self._load_celestial_bodies()

        if not self.config.celestial_bodies:
            self.config.celestial_bodies = [
                "M31 (Andromeda Galaxy)",
                "M42 (Orion Nebula)",
                "M45 (Pleiades)",
                "M57 (Ring Nebula)",
                "Sun",
                "Moon",
                "Jupiter",
                "Saturn"
            ]
            self._save_celestial_bodies()

    def _load_settings(self):
        if os.path.exists(self.SETTINGS_FILE):
            try:
                with open(self.SETTINGS_FILE, 'r', encoding='utf-8') as f:
                    data = json.load(f)
                    self.config.cameras = data.get('cameras', [])
                    self.config.lenses = data.get('lenses', [])
                    self.config.last_watch_folder = data.get('last_watch_folder', '')
                    self.config.last_camera = data.get('last_camera', '')
                    self.config.last_lens = data.get('last_lens', '')
            except Exception as e:
                print(f"Ошибка загрузки настроек: {e}")

    def save_settings(self):
        try:
            with open(self.SETTINGS_FILE, 'w', encoding='utf-8') as f:
                json.dump({
                    'cameras': self.config.cameras,
                    'lenses': self.config.lenses,
                    'last_watch_folder': self.config.last_watch_folder,
                    'last_camera': self.config.last_camera,
                    'last_lens': self.config.last_lens
                }, f, ensure_ascii=False, indent=2)
        except Exception as e:
            print(f"Ошибка сохранения настроек: {e}")

    def _load_celestial_bodies(self):
        if os.path.exists(self.CELESTIAL_BODIES_FILE):
            try:
                with open(self.CELESTIAL_BODIES_FILE, 'r', encoding='utf-8') as f:
                    self.config.celestial_bodies = json.load(f)
            except Exception as e:
                print(f"Ошибка загрузки небесных тел: {e}")

    def _save_celestial_bodies(self):
        try:
            with open(self.CELESTIAL_BODIES_FILE, 'w', encoding='utf-8') as f:
                json.dump(self.config.celestial_bodies, f, ensure_ascii=False, indent=2)
        except Exception as e:
            print(f"Ошибка сохранения небесных тел: {e}")

    def get_cameras(self) -> List[str]:
        return self.config.cameras.copy()

    def add_camera(self, camera: str):
        if camera and camera not in self.config.cameras:
            self.config.cameras.append(camera)
            self.save_settings()

    def remove_camera(self, camera: str):
        if camera in self.config.cameras:
            self.config.cameras.remove(camera)
            self.save_settings()

    def get_lenses(self) -> List[str]:
        return self.config.lenses.copy()

    def add_lens(self, lens: str):
        if lens and lens not in self.config.lenses:
            self.config.lenses.append(lens)
            self.save_settings()

    def remove_lens(self, lens: str):
        if lens in self.config.lenses:
            self.config.lenses.remove(lens)
            self.save_settings()

    def get_celestial_bodies(self) -> List[str]:
        return self.config.celestial_bodies.copy()

    def add_celestial_body(self, name: str):
        if name and name not in self.config.celestial_bodies:
            self.config.celestial_bodies.append(name)
            self._save_celestial_bodies()

    def remove_celestial_body(self, name: str):
        if name in self.config.celestial_bodies:
            self.config.celestial_bodies.remove(name)
            self._save_celestial_bodies()

    def update_celestial_body(self, old_name: str, new_name: str):
        if old_name in self.config.celestial_bodies:
            idx = self.config.celestial_bodies.index(old_name)
            self.config.celestial_bodies[idx] = new_name
            self._save_celestial_bodies()

    def get_last_watch_folder(self) -> str:
        return self.config.last_watch_folder

    def set_last_watch_folder(self, folder: str):
        self.config.last_watch_folder = folder
        self.save_settings()

    def get_last_camera(self) -> str:
        return self.config.last_camera

    def set_last_camera(self, camera: str):
        self.config.last_camera = camera
        self.save_settings()

    def get_last_lens(self) -> str:
        return self.config.last_lens

    def set_last_lens(self, lens: str):
        self.config.last_lens = lens
        self.save_settings()