/*import maplibregl from "maplibre-gl";
import proj4 from "proj4";
import * as THREE from "three";
console.log(THREE);
proj4.defs(
  "EPSG:25832",
  "+proj=utm +zone=32 +ellps=GRS80 +units=m +no_defs"
);


const center = [9.209116842757239, 52.26520546238239]

const map = new maplibregl.Map({
    container: 'map',
    style: "https://tiles.openfreemap.org/styles/bright",
    center: center,
    zoom: 17,
    maxZoom: 24,
});

map.addControl(
    new maplibregl.NavigationControl({
        visualizePitch: true,
        showZoom: true,
        showCompass: true
    })
);

// 2. Create an HTML element to display coordinates (e.g., <pre id="coordinates"></pre>)
const coordinatesDiv = document.getElementById('coordinates');

// 3. Listen for mouse movement
map.on('mousemove', (e) => {
    // e.lngLat contains the longitude and latitude
    const lng = e.lngLat.lng.toFixed(5);
    const lat = e.lngLat.lat.toFixed(5);
    
    coordinatesDiv.innerHTML = `Lon: ${lng}° | Lat: ${lat}°`;
});

var pointBudget = document.getElementById("pointSlider").value;
var pointSize = document.getElementById("pointSizeSlider").value;
const elRenderArea=document.getElementById("potree_render_area");

const viewer=new Potree.Viewer(elRenderArea, {noDragAndDrop:true});
viewer.setEDLEnabled(false); // sieht realistischer aus
viewer.setFOV(60);
viewer.setPointBudget(pointBudget);
viewer.setMinNodeSize(pointSize);
viewer.setBackground("none"); 

console.log(viewer.orbitControls);
console.log(viewer.fpControls);
console.log(viewer.deviceControls);

viewer.orbitControls.enabled=false;
viewer.fpControls.enabled=false;
viewer.deviceControls.enabled=false;


var quality = 'medium';

// Dateipfade der Punktwolke
// Funktion für aktuelle Pfade
function getPointCloudFiles() {
    return {
      first: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp1_${quality}/metadata.json`,
      second: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp2_${quality}/metadata.json`,
      third: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp3_${quality}/metadata.json`,
    };
}

//Aktuelle Datei und Sichtbarkeit
let currentPointCloud=null;
let isVisible=true;

function loadPointCloud(path){
  console.log("Laden aufgerufen")
  console.log("Pfad "+ path);
    // Vorherige Punktwolke entfernen
    if (currentPointCloud) {
      // Aus Potree-Liste entfernen
      const index = viewer.scene.pointclouds.indexOf(currentPointCloud);

      if (index !== -1) {
        viewer.scene.pointclouds.splice(index, 1);
      }

      // Aus Three.js Szene entfernen
      if (currentPointCloud.parent) {
        currentPointCloud.parent.remove(currentPointCloud);
      }

      currentPointCloud = null;
      viewer.render();
    }

  if(!path ||!isVisible) return;

  Potree.loadPointCloud(path, "punktwolke", function(e) {
    currentPointCloud=e.pointcloud;
    viewer.scene.addPointCloud(currentPointCloud);

   // View-Objekt inspizieren
    console.log("view:", viewer.scene.view);
    console.log("view.lookAt:", viewer.scene.view.lookAt);
    console.log("view.position:", viewer.scene.view.position);
    console.log("view keys:", Object.keys(viewer.scene.view));
    

    let material =currentPointCloud.material;
    material.size =1;
    material.pointSizeType=Potree.PointSizeType.ADAPTIVE;
    
    viewer.fitToScreen();
    setTimeout(() => syncCamera(), 500);
  });
}


function syncCamera() {

    if (!currentPointCloud) return;

    const center = map.getCenter();

    // -----------------------------------------
    // WGS84 -> ETRS89 / UTM32
    // -----------------------------------------

    const [x, y] = proj4(
        "EPSG:4326",
        "EPSG:25832",
        [center.lng, center.lat]
    );

    // -----------------------------------------
    // Map Parameter
    // -----------------------------------------

    const pitch = map.getPitch() * Math.PI / 180;
    const bearing = map.getBearing() * Math.PI / 180;
    const zoom = map.getZoom();

    // -----------------------------------------
    // Abstand abhängig vom Zoom
    // -----------------------------------------
    const earthCircumference = 40075016.686;
    const metersPerPixel = earthCircumference * Math.cos(center.lat * Math.PI / 180) / Math.pow(2, zoom + 8);
    const distance = metersPerPixel * (map.getCanvas().height/2);

    // -----------------------------------------
    // Zielpunkt = Kartenzentrum
    // -----------------------------------------
    const target = new THREE.Vector3(x, y, 0);

    // -----------------------------------------
    // Kameraoffset
    // -----------------------------------------
    const offset = new THREE.Vector3(0, -distance * Math.sin(pitch), distance * Math.cos(pitch)
    );

    // Bearing rotieren
    offset.applyAxisAngle(new THREE.Vector3(0, 0, 1), -bearing);

    // -----------------------------------------
    // Kameraposition
    // -----------------------------------------
    const cameraPosition = target.clone().add(offset);

    // -----------------------------------------
    // Potree Kamera setzen
    // -----------------------------------------

    viewer.scene.view.position.copy(cameraPosition);
    viewer.scene.view.lookAt(target);
    viewer.renderer.resetState();
}

// Kameras bei jeder Kartenbewegung synchronisieren
  map.on('move', syncCamera);
  map.on('zoom', syncCamera);
  map.on('pitch', syncCamera);
  map.on('rotate', syncCamera);




// Hintergrundkarte ändern
function changeBaseMap(newMap){
  var basemapStyle;
  switch(newMap){
    case "openfree_dark":
      basemapStyle = "https://tiles.openfreemap.org/styles/dark"
      break;
    case "openfree_bright":
      basemapStyle = "https://tiles.openfreemap.org/styles/bright"
      break;
    case "openfree_liberty":
      basemapStyle = "https://tiles.openfreemap.org/styles/liberty"
      break;
    case "google_satellite":
   basemapStyle = {
    version: 8,
    sources: {
      "raster-tiles": {
        type: "raster",
        tiles: [
          "https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key=6mG881AthmTTWyLvFyjH"
        ],
        tileSize: 256,
        attribution: "&copy; MapTiler",
      }
    },
    layers: [
      {
        id: "satellite-layer",
        type: "raster",
        source: "raster-tiles"
      }
    ]
  }
    break;
  case "terrain":
    basemapStyle = {
        version: 8,
        sources: {
            topo: {
        type: 'raster',
        url: 'https://api.maptiler.com/maps/topo-v4/tiles.json?key=6mG881AthmTTWyLvFyjH',
        tileSize: 256,
      },
            // Use a different source for terrain and hillshade layers, to improve render quality
            terrainSource: {
                type: 'raster-dem',
                url: 'https://tiles.mapterhorn.com/tilejson.json',
            },
            hillshadeSource: {
                type: 'raster-dem',
                url: 'https://tiles.mapterhorn.com/tilejson.json'
            }
        },
        layers: [
            {
                id: 'topo',
                type: 'raster',
                source: 'topo'
            },
            {
                id: 'hills',
                type: 'hillshade',
                source: 'hillshadeSource',
                layout: {visibility: 'visible'},
                paint: {'hillshade-shadow-color': '#473B24'}
            }
        ],
        terrain: {
            source: 'terrainSource',
            exaggeration: 1
        },
        sky: {}
    }
    break;
    case "satellite_terrain": 
      basemapStyle =  {
        version: 8,
        sources: {
             "raster-tiles": {
        type: "raster",
        tiles: [
          "https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key=6mG881AthmTTWyLvFyjH"
        ],
        tileSize: 256,
        attribution: "&copy; MapTiler",
      },
            // Use a different source for terrain and hillshade layers, to improve render quality
            terrainSource: {
                type: 'raster-dem',
                url: 'https://tiles.mapterhorn.com/tilejson.json',
            },
            hillshadeSource: {
                type: 'raster-dem',
                url: 'https://tiles.mapterhorn.com/tilejson.json'
            }
        },
        layers: [
            {
                id: 'raster-tiles',
                type: 'raster',
                source: 'raster-tiles'
            },
            {
                id: 'hills',
                type: 'hillshade',
                source: 'hillshadeSource',
                layout: {visibility: 'visible'},
                paint: {'hillshade-shadow-color': '#473B24'}
            }
        ],
        terrain: {
            source: 'terrainSource',
            exaggeration: 1
        },
        sky: {}
    }
	
  }
  map.setStyle(basemapStyle);
}


const button = document.querySelector('#disable')

button.addEventListener('click', () => {

    isVisible = !isVisible;

    if(currentPointCloud){
        currentPointCloud.visible = isVisible;
    }

    button.textContent = isVisible
        ? "Punktwolke ausblenden"
        : "Punktwolke anzeigen";

});


// ausgewähltes Element im BaseMap DropDown Feld
const selectElement = document.querySelector('select[name="basemap"]');
selectElement.addEventListener('change', (event) => {
  changeBaseMap(event.target.value);
});



// ausgewähltes Element im Punktwolken DropDown Feld

document.querySelector('select[name="pointcloud"]').addEventListener('change', (event) => {
  const pointCloudFiles = getPointCloudFiles();
  var pointcloud = pointCloudFiles[event.target.value];
  loadPointCloud(pointcloud);
  console.log(pointCloudFiles[event.target.value]);
});


// Auf Zentrum zurück zoomen
document.getElementById("location").addEventListener("click", () => {
 map.flyTo({center, zoom: 17 })
});


var pointCountSlider = document.getElementById("pointSlider");
var pointCountOutput = document.getElementById("pointSliderValue");
pointCountOutput.innerHTML = "Dargestellte Punkte: " + Number(pointCountSlider.value).toLocaleString();

pointCountSlider.oninput = function() {
  pointCountOutput.innerHTML = "Dargestellte Punkte: " + Number(this.value).toLocaleString('de-DE');;
  pointBudget = document.getElementById("pointSlider").value;
  viewer.setPointBudget(pointBudget);
}



var pointSizeSlider = document.getElementById("pointSizeSlider");

pointSizeSlider.oninput = function() {
  pointSize = document.getElementById("pointSizeSlider").value;
  viewer.setMinNodeSize(pointSize);
  console.log(pointSize);
}

const closeButton = document.getElementById("closeSideBarButton");
const sidebar = document.getElementById("sidebar");
const openOuter = document.getElementById("openButtonOuter");

if (closeButton) {
    closeButton.addEventListener("click", () => {
      const rect = closeButton.getBoundingClientRect();  
      sidebar.style.display = "none";
        
        openOuter.innerHTML = "<button class='sideBarButtons' id='openSideBarButton' title='Menü ausklappen'>>></button>";
        const openButton = document.getElementById("openSideBarButton");
        openButton.style.top = `${rect.top + window.scrollY -2}px`;
        if (openButton) {
            openButton.addEventListener("click", () => {
                sidebar.style.display = "flex";
              
                openOuter.innerHTML = ""; 
            });
        }
    });
}

// Qualitätsbuttons aktivieren/deaktivieren
const qualityButtons = document.querySelectorAll('.qualityButtons');

qualityButtons.forEach(button => {

    button.addEventListener('click', () => {
        console.log(button.id);
        quality=button.id;

        if (currentPointCloud) {
          const pointCloudFiles = getPointCloudFiles();
          var pointCloudValue = document.getElementById("pointcloud").value
          var pointcloud = pointCloudFiles[pointCloudValue];
          loadPointCloud(pointcloud);
        }
        qualityButtons.forEach(btn => {
            btn.classList.remove('active');
        });

        button.classList.add('active');

    });

});


// Farbbuttons aktivieren/deaktivieren
const colorButtons = document.querySelectorAll('.colorButtons');

colorButtons.forEach(button => {

    button.addEventListener('click', () => {

        colorButtons.forEach(btn => {
            btn.classList.remove('active');
        });

        button.classList.add('active');

    });

});*/
import maplibregl from "maplibre-gl";
import proj4 from "proj4";
import * as THREE from "three";

proj4.defs(
  "EPSG:25832",
  "+proj=utm +zone=32 +ellps=GRS80 +units=m +no_defs"
);

const center = [9.209116842757239, 52.26520546238239];

const map = new maplibregl.Map({
  container: "map",
  style: "https://tiles.openfreemap.org/styles/bright",
  center: center,
  zoom: 17,
  maxZoom: 24,
  canvasContextAttributes: { antialias: true },
});

map.addControl(
  new maplibregl.NavigationControl({
    visualizePitch: true,
    showZoom: true,
    showCompass: true,
  })
);

const coordinatesDiv = document.getElementById("coordinates");
map.on("mousemove", (e) => {
  coordinatesDiv.innerHTML = `Lon: ${e.lngLat.lng.toFixed(5)}° | Lat: ${e.lngLat.lat.toFixed(5)}°`;
});

var pointBudget = document.getElementById("pointSlider").value;
var pointSize = document.getElementById("pointSizeSlider").value;
const elRenderArea = document.getElementById("potree_render_area");

const viewer = new Potree.Viewer(elRenderArea, { noDragAndDrop: true });
viewer.setEDLEnabled(false);
viewer.setFOV(60);
viewer.setPointBudget(pointBudget);
viewer.setMinNodeSize(pointSize);
viewer.setBackground("none");

viewer.orbitControls.enabled = false;
viewer.fpControls.enabled = false;
viewer.deviceControls.enabled = false;

const originLngLat = { lng: center[0], lat: center[1] };
const originMercator = maplibregl.MercatorCoordinate.fromLngLat(originLngLat, 0);
const metersToMercator = originMercator.meterInMercatorCoordinateUnits();

const potreeLayer = {
  id: "potree-pointcloud",
  type: "custom",
  renderingMode: "3d",

  onAdd(map, gl) {
    this.map = map;
    this.gl = gl;
    this.camera = new THREE.Camera();
    this.renderer = new THREE.WebGLRenderer({
      canvas: map.getCanvas(),
      context: gl,
      antialias: true,
    });
    this.renderer.autoClear = false;
    this.scene = new THREE.Scene();
  },

  render(gl, args) {
    if (!currentPointCloud) return;

    const m = new THREE.Matrix4().fromArray(
      args.defaultProjectionData.mainMatrix
    );

    const [originX, originY] = proj4("EPSG:4326", "EPSG:25832", [
      center[0],
      center[1],
    ]);

    const l = new THREE.Matrix4()
      .makeTranslation(
        -originX * metersToMercator + originMercator.x,
        originY * metersToMercator - originMercator.y,
        0
      )
      .premultiply(
        new THREE.Matrix4().makeScale(
          metersToMercator,
          -metersToMercator,
          metersToMercator
        )
      );

    this.camera.projectionMatrix = m.multiply(l);

    this.renderer.resetState();
    this.renderer.render(viewer.scene.scene, this.camera);
    this.map.triggerRepaint();
  },
};

map.on("style.load", () => {
  map.addLayer(potreeLayer);
});

var quality = "medium";
let currentPointCloud = null;
let isVisible = true;

function getPointCloudFiles() {
  return {
    first: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp1_${quality}/metadata.json`,
    second: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp2_${quality}/metadata.json`,
    third: `http://ar2350.web-01.fbbgg.hs-woe.de/Punktwolken%20konvertiert%20potree%20Format/sp3_${quality}/metadata.json`,
  };
}

function loadPointCloud(path) {
  if (currentPointCloud) {
    const index = viewer.scene.pointclouds.indexOf(currentPointCloud);
    if (index !== -1) viewer.scene.pointclouds.splice(index, 1);
    if (currentPointCloud.parent) currentPointCloud.parent.remove(currentPointCloud);
    currentPointCloud = null;
    map.triggerRepaint();
  }

  if (!path || !isVisible) return;

  Potree.loadPointCloud(path, "punktwolke", function (e) {
    currentPointCloud = e.pointcloud;
    viewer.scene.addPointCloud(currentPointCloud);

    let material = currentPointCloud.material;
    material.size = 1;
    material.pointSizeType = Potree.PointSizeType.ADAPTIVE;

    map.triggerRepaint();
  });
}

function changeBaseMap(newMap) {
  var basemapStyle;
  switch (newMap) {
    case "openfree_dark":
      basemapStyle = "https://tiles.openfreemap.org/styles/dark";
      break;
    case "openfree_bright":
      basemapStyle = "https://tiles.openfreemap.org/styles/bright";
      break;
    case "openfree_liberty":
      basemapStyle = "https://tiles.openfreemap.org/styles/liberty";
      break;
    case "google_satellite":
      basemapStyle = {
        version: 8,
        sources: {
          "raster-tiles": {
            type: "raster",
            tiles: ["https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key=6mG881AthmTTWyLvFyjH"],
            tileSize: 256,
            attribution: "&copy; MapTiler",
          },
        },
        layers: [{ id: "satellite-layer", type: "raster", source: "raster-tiles" }],
      };
      break;
    case "terrain":
      basemapStyle = {
        version: 8,
        sources: {
          topo: { type: "raster", url: "https://api.maptiler.com/maps/topo-v4/tiles.json?key=6mG881AthmTTWyLvFyjH", tileSize: 256 },
          terrainSource: { type: "raster-dem", url: "https://tiles.mapterhorn.com/tilejson.json" },
          hillshadeSource: { type: "raster-dem", url: "https://tiles.mapterhorn.com/tilejson.json" },
        },
        layers: [
          { id: "topo", type: "raster", source: "topo" },
          { id: "hills", type: "hillshade", source: "hillshadeSource", layout: { visibility: "visible" }, paint: { "hillshade-shadow-color": "#473B24" } },
        ],
        terrain: { source: "terrainSource", exaggeration: 1 },
        sky: {},
      };
      break;
    case "satellite_terrain":
      basemapStyle = {
        version: 8,
        sources: {
          "raster-tiles": { type: "raster", tiles: ["https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key=6mG881AthmTTWyLvFyjH"], tileSize: 256, attribution: "&copy; MapTiler" },
          terrainSource: { type: "raster-dem", url: "https://tiles.mapterhorn.com/tilejson.json" },
          hillshadeSource: { type: "raster-dem", url: "https://tiles.mapterhorn.com/tilejson.json" },
        },
        layers: [
          { id: "raster-tiles", type: "raster", source: "raster-tiles" },
          { id: "hills", type: "hillshade", source: "hillshadeSource", layout: { visibility: "visible" }, paint: { "hillshade-shadow-color": "#473B24" } },
        ],
        terrain: { source: "terrainSource", exaggeration: 1 },
        sky: {},
      };
      break;
  }
  map.setStyle(basemapStyle);
  map.once("style.load", () => {
    map.addLayer(potreeLayer);
  });
}

document.querySelector("#disable").addEventListener("click", function () {
  isVisible = !isVisible;
  if (currentPointCloud) currentPointCloud.visible = isVisible;
  this.textContent = isVisible ? "Punktwolke ausblenden" : "Punktwolke anzeigen";
});

document.querySelector('select[name="basemap"]').addEventListener("change", (e) => {
  changeBaseMap(e.target.value);
});

document.querySelector('select[name="pointcloud"]').addEventListener("change", (e) => {
  const files = getPointCloudFiles();
  loadPointCloud(files[e.target.value]);
});

document.getElementById("location").addEventListener("click", () => {
  map.flyTo({ center, zoom: 17 });
});

var pointCountSlider = document.getElementById("pointSlider");
var pointCountOutput = document.getElementById("pointSliderValue");
pointCountOutput.innerHTML = "Dargestellte Punkte: " + Number(pointCountSlider.value).toLocaleString();
pointCountSlider.oninput = function () {
  pointCountOutput.innerHTML = "Dargestellte Punkte: " + Number(this.value).toLocaleString("de-DE");
  viewer.setPointBudget(this.value);
};

document.getElementById("pointSizeSlider").oninput = function () {
  viewer.setMinNodeSize(this.value);
};

const closeButton = document.getElementById("closeSideBarButton");
const sidebar = document.getElementById("sidebar");
const openOuter = document.getElementById("openButtonOuter");
if (closeButton) {
  closeButton.addEventListener("click", () => {
    const rect = closeButton.getBoundingClientRect();
    sidebar.style.display = "none";
    openOuter.innerHTML = "<button class='sideBarButtons' id='openSideBarButton' title='Menü ausklappen'>>></button>";
    const openButton = document.getElementById("openSideBarButton");
    openButton.style.top = `${rect.top + window.scrollY - 2}px`;
    openButton.addEventListener("click", () => {
      sidebar.style.display = "flex";
      openOuter.innerHTML = "";
    });
  });
}

document.querySelectorAll(".qualityButtons").forEach((btn) => {
  btn.addEventListener("click", () => {
    quality = btn.id;
    if (currentPointCloud) {
      const files = getPointCloudFiles();
      loadPointCloud(files[document.getElementById("pointcloud").value]);
    }
    document.querySelectorAll(".qualityButtons").forEach((b) => b.classList.remove("active"));
    btn.classList.add("active");
  });
});

document.querySelectorAll(".colorButtons").forEach((btn) => {
  btn.addEventListener("click", () => {
    document.querySelectorAll(".colorButtons").forEach((b) => b.classList.remove("active"));
    btn.classList.add("active");
  });
});