// Настройки
import { state } from '../core/state.js';

let settingsPanel = null;
let dayNightToggle = null;

// Weather button IDs in order
const WEATHER_BTNS = ['weatherClear', 'weatherRain', 'weatherSnow', 'weatherThunder'];
const WEATHER_ACTIVE_BG = '#3498db';
const WEATHER_INACTIVE_BG = '#555';

function setWeatherButtonActive(activeId) {
  for (const id of WEATHER_BTNS) {
    const btn = document.getElementById(id);
    if (btn) {
      btn.style.background = (id === activeId) ? WEATHER_ACTIVE_BG : WEATHER_INACTIVE_BG;
    }
  }
}

export function initSettings() {
  settingsPanel = document.getElementById('settingsPanel');
  dayNightToggle = document.getElementById('dayNightToggle');
  
  if (!settingsPanel) return;
  
  const closeBtn = document.getElementById('settingsClose');
  if (closeBtn) {
    closeBtn.addEventListener('click', () => {
      settingsPanel.style.display = 'none';
    });
  }
  
  // Day/night cycle toggle
  if (dayNightToggle) {
    dayNightToggle.checked = state.dayNightCycle !== false;
    dayNightToggle.addEventListener('change', () => {
      state.dayNightCycle = dayNightToggle.checked;
    });
  }
  
  // Time-of-day slider
  const timeSlider = document.getElementById('timeSlider');
  if (timeSlider) {
    timeSlider.value = Math.round(state.worldTime * 100);
    timeSlider.addEventListener('input', () => {
      state.worldTime = parseInt(timeSlider.value) / 100;
      if (state.dayNightCycle) {
        state.dayNightCycle = false;
        if (dayNightToggle) dayNightToggle.checked = false;
      }
    });
  }
  
  // ====== Weather controls (Ясно / Дождь / Снег / Гроза) ======
  const weatherIntensitySlider = document.getElementById('weatherIntensity');
  
  // Helper: apply a weather type
  function applyWeather(type) {
    state.weatherType = type;
    state.weatherChangeInterval = Infinity; // Lock weather manually
    
    switch (type) {
      case 'clear':
        state.isRaining = false;
        state.rainIntensity = 0;
        if (weatherIntensitySlider) weatherIntensitySlider.value = 0;
        break;
      case 'rain':
        state.isRaining = true;
        state.rainIntensity = parseInt(weatherIntensitySlider?.value || 40) / 100;
        break;
      case 'snow':
        state.isRaining = false; // snow uses its own rendering
        state.rainIntensity = parseInt(weatherIntensitySlider?.value || 40) / 100;
        break;
      case 'thunder':
        state.isRaining = true; // thunder includes rain
        state.rainIntensity = parseInt(weatherIntensitySlider?.value || 60) / 100;
        if (weatherIntensitySlider) weatherIntensitySlider.value = Math.round(state.rainIntensity * 100);
        break;
    }
    
    setWeatherButtonActive('weather' + type.charAt(0).toUpperCase() + type.slice(1));
  }
  
  // Button handlers
  for (const id of WEATHER_BTNS) {
    const btn = document.getElementById(id);
    if (btn) {
      const weatherType = btn.dataset.weather || id.replace('weather', '').toLowerCase();
      btn.addEventListener('click', () => applyWeather(weatherType));
    }
  }
  
  // Intensity slider
  if (weatherIntensitySlider) {
    weatherIntensitySlider.addEventListener('input', () => {
      const val = parseInt(weatherIntensitySlider.value) / 100;
      if (state.weatherType !== 'clear') {
        state.rainIntensity = val;
        if (state.weatherType === 'thunder' || state.weatherType === 'rain') {
          state.isRaining = true;
        }
      }
    });
  }
  
  // Listen for toggleSettings custom event
  document.addEventListener('toggleSettings', () => {
    if (settingsPanel) {
      // Sync all controls when panel opens
      if (timeSlider) timeSlider.value = Math.round(state.worldTime * 100);
      if (dayNightToggle) dayNightToggle.checked = state.dayNightCycle !== false;
      if (weatherIntensitySlider) weatherIntensitySlider.value = Math.round(state.rainIntensity * 100);
      // Highlight active weather button
      const wt = state.weatherType || (state.isRaining ? 'rain' : 'clear');
      const activeId = 'weather' + wt.charAt(0).toUpperCase() + wt.slice(1);
      setWeatherButtonActive(activeId);
      settingsPanel.style.display = settingsPanel.style.display === 'none' ? 'block' : 'none';
    }
  });
}

export function isDayNightEnabled() {
  return state.dayNightCycle !== false;
}