import * as THREE from 'three';
import { createNoise3D } from 'simplex-noise';

import { CONFIG } from './constants.js';
import { latLonToVector3, vector3ToLatLon, screenToEarthCoords } from './utils.js';
import { 
  showStatusMessage, 
  updateCoordinatesDisplay, 
  updateZoomDisplay, 
  updateEarthStats,
  updateCableDetails,
  setLoading,
  showTooltip,
  hideTooltip 
} from './ui.js';
import { createEarth, createClouds, createTerrain, createStars, createGridLines, toggleTerrain, getEarth } from './earth.js';
import { loadGeoJSONFromPath, loadLandingPoints, handleCableClick, clearCableSelection, getCableLines } from './cables.js';
import { setupControls, getAutoRotate, getShowTerrain, zoomLevel, setAutoRotate, toggleAutoRotate } from './controls.js';

export let scene, camera, renderer;
let simplex;
let isDragging = false;
let previousMousePosition = { x: 0, y: 0 };
let hoveredCable = null;
let lockedCable = null;

window.addEventListener('error', (e) => {
  console.error('全局错误:', e.error);
  showStatusMessage('加载错误: ' + e.error?.message, 'error');
});

window.addEventListener('unhandledrejection', (e) => {
  console.error('未处理的Promise错误:', e.reason);
});

export function init() {
  simplex = createNoise3D();
  
  scene = new THREE.Scene();
  
  camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
  camera.position.z = CONFIG.defaultCameraZ;
  
  renderer = new THREE.WebGLRenderer({ antialias: true, alpha: false, powerPreference: 'high-performance' });
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setClearColor(0x0a0a1a, 1);
  renderer.setPixelRatio(window.devicePixelRatio);
  document.getElementById('container').appendChild(renderer.domElement);
  
  addLights();
  const earthObj = createEarth(scene);
  createClouds(scene, earthObj);
  createTerrain(scene, earthObj, simplex);
  createStars(scene);
  createGridLines(scene, earthObj);
  
  setupControls(camera, renderer, scene, earthObj);
  setupEventListeners(camera, renderer);
  
  loadData();
  
  animate();
}

function addLights() {
  const ambientLight = new THREE.AmbientLight(0x404060);
  scene.add(ambientLight);
  
  const directionalLight = new THREE.DirectionalLight(0xffffff, 1.2);
  directionalLight.position.set(5, 3, 5);
  scene.add(directionalLight);
  
  const backLight = new THREE.DirectionalLight(0x446688, 0.3);
  backLight.position.set(-5, 0, -5);
  scene.add(backLight);
  
  const pointLight = new THREE.PointLight(0xffffff, 0.4);
  pointLight.position.set(10, 10, 10);
  scene.add(pointLight);
}

async function loadData() {
  setLoading(true);
  try {
    console.log('开始加载电缆数据...');
    await loadGeoJSONFromPath(scene, getEarth());
    console.log('电缆数据加载完成');
    await loadLandingPoints(scene, getEarth());
    console.log('登陆点数据加载完成');
  } catch (error) {
    console.error('加载数据失败:', error);
    showStatusMessage('加载数据失败: ' + error.message, 'error');
  }
  setLoading(false);
}

function setupEventListeners(camera, renderer) {
  window.addEventListener('resize', () => onWindowResize(camera, renderer));
  
  renderer.domElement.addEventListener('mousemove', (e) => onMouseMove(e, camera));
  renderer.domElement.addEventListener('mousedown', onMouseDown);
  renderer.domElement.addEventListener('mouseup', onMouseUp);
  renderer.domElement.addEventListener('click', (e) => onClick(e, camera, renderer));
}

function onWindowResize(camera, renderer) {
  camera.aspect = window.innerWidth / window.innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(window.innerWidth, window.innerHeight);
}

function getFrontFacingCables(cableLines, camera) {
  const earth = getEarth();
  if (!earth) return cableLines;
  
  const cameraDir = new THREE.Vector3();
  camera.getWorldDirection(cameraDir);
  
  return cableLines.filter(cable => {
    const cablePos = new THREE.Vector3();
    cable.geometry.computeBoundingBox();
    const boundingBox = cable.geometry.boundingBox;
    if (boundingBox) {
      boundingBox.getCenter(cablePos);
      cable.localToWorld(cablePos);
    }
    
    const toCamera = new THREE.Vector3().subVectors(camera.position, earth.position).normalize();
    const toCable = new THREE.Vector3().subVectors(cablePos, earth.position).normalize();
    
    return toCamera.dot(toCable) > 0;
  });
}

function onMouseMove(event, camera) {
  const earth = getEarth();
  if (!earth) return;
  
  const raycaster = new THREE.Raycaster();
  const mouse = new THREE.Vector2(
    (event.clientX / window.innerWidth) * 2 - 1,
    -(event.clientY / window.innerHeight) * 2 + 1
  );
  
  raycaster.setFromCamera(mouse, camera);
  
  const allCableLines = getCableLines();
  const frontCables = getFrontFacingCables(allCableLines, camera);
  const intersects = raycaster.intersectObjects(frontCables);
  
  if (hoveredCable && hoveredCable !== lockedCable) {
    if (hoveredCable.userData.originalColor !== undefined) {
      hoveredCable.material.color.setHex(hoveredCable.userData.originalColor);
    }
    hoveredCable = null;
  }
  
  if (intersects.length > 0) {
    const cable = intersects[0].object;
    if (cable !== lockedCable) {
      cable.material.color.setHex(0xffffff);
      cable.material.opacity = 1;
      hoveredCable = cable;
    }
    
    const userData = cable.userData;
    document.getElementById('cable-name').textContent = 
      userData.name || userData.shortname || '未命名电缆';
    document.getElementById('cable-owner').textContent = userData.owner || '-';
    document.getElementById('cable-status').textContent = userData.status || '-';
    document.getElementById('cable-length').textContent = userData.length || '-';
    document.getElementById('cable-coords').textContent = '-';
    document.getElementById('cable-rfs').textContent = userData.rfs || '-';
    
    hideTooltip();
  } else {
    if (!lockedCable) {
      document.getElementById('cable-name').textContent = '点击电缆查看详情';
      document.getElementById('cable-owner').textContent = '-';
      document.getElementById('cable-status').textContent = '-';
      document.getElementById('cable-length').textContent = '-';
      document.getElementById('cable-coords').textContent = '-';
      document.getElementById('cable-rfs').textContent = '-';
    }
    
    const earthPoint = screenToEarthCoords(event.clientX, event.clientY, camera, earth);
    
    if (earthPoint) {
      const coords = vector3ToLatLon(earthPoint);
      updateCoordinatesDisplay(coords.lat, coords.lon, coords.alt);
      
      if (!isDragging) {
        showTooltip(event.clientX + 10, event.clientY + 10, 
          `纬度: ${coords.lat}°<br>经度: ${coords.lon}°<br>海拔: ${coords.alt.toFixed(1)} km`);
      }
    }
  }
  
  if (isDragging) {
    const deltaX = event.clientX - previousMousePosition.x;
    const deltaY = event.clientY - previousMousePosition.y;
    
    earth.rotation.y += deltaX * 0.005;
    earth.rotation.x += deltaY * 0.005;
    
    previousMousePosition = { x: event.clientX, y: event.clientY };
  }
}

function onMouseDown(event) {
  isDragging = true;
  previousMousePosition = { x: event.clientX, y: event.clientY };
  document.getElementById('container').classList.add('dragging');
  hideTooltip();
}

function onMouseUp() {
  isDragging = false;
  document.getElementById('container').classList.remove('dragging');
}

function onClick(event, camera, renderer) {
  const earth = getEarth();
  if (!earth) return;
  
  const raycaster = new THREE.Raycaster();
  const mouse = new THREE.Vector2(
    (event.clientX / window.innerWidth) * 2 - 1,
    -(event.clientY / window.innerHeight) * 2 + 1
  );
  
  raycaster.setFromCamera(mouse, camera);
  
  const allCableLines = getCableLines();
  const frontCables = getFrontFacingCables(allCableLines, camera);
  const intersects = raycaster.intersectObjects(frontCables);
  
  if (intersects.length > 0) {
    if (lockedCable && lockedCable !== intersects[0].object) {
      if (lockedCable.userData.originalColor !== undefined) {
        lockedCable.material.color.setHex(lockedCable.userData.originalColor);
      }
    }
    
    lockedCable = intersects[0].object;
    lockedCable.material.color.setHex(0xffffff);
    
    setAutoRotate(false);
    handleCableClick(intersects[0].object);
  } else {
    if (lockedCable) {
      if (lockedCable.userData.originalColor !== undefined) {
        lockedCable.material.color.setHex(lockedCable.userData.originalColor);
      }
      lockedCable = null;
    }
    setAutoRotate(true);
    clearCableSelection();
  }
}

function animate() {
  requestAnimationFrame(animate);
  
  const earth = getEarth();
  
  if (getAutoRotate() && earth) {
    earth.rotation.y += CONFIG.rotationSpeed;
  }
  
  if (lockedCable) {
    const pulse = (Math.sin(Date.now() * 0.003) + 1) * 0.5;
    lockedCable.material.opacity = 0.6 + pulse * 0.4;
    const glowIntensity = 0.7 + pulse * 0.3;
    lockedCable.material.color.setRGB(glowIntensity, glowIntensity, glowIntensity);
  }
  
  renderer.render(scene, camera);
}

window.clearLockedCable = function() {
  if (lockedCable) {
    if (lockedCable.userData.originalColor !== undefined) {
      lockedCable.material.color.setHex(lockedCable.userData.originalColor);
      lockedCable.material.opacity = 1.0;
    }
    lockedCable = null;
  }
  clearCableSelection();
};

document.addEventListener('DOMContentLoaded', init);