import { Color, CubeTextureLoader } from "three";
import { CSS2DObject } from "three/examples/jsm/renderers/CSS2DRenderer.js";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";
import { MathUtils } from "three/src/math/MathUtils.js";

import GeoJSON from "ol/format/GeoJSON.js";
import VectorSource from "ol/source/Vector.js";
import { createXYZ } from "ol/tilegrid.js";
import { tile } from "ol/loadingstrategy.js";

import Extent from "@giro3d/giro3d/core/geographic/Extent.js";
import Instance from "@giro3d/giro3d/core/Instance.js";
import ColorLayer from "@giro3d/giro3d/core/layer/ColorLayer.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";
import FeatureCollection from "@giro3d/giro3d/entities/FeatureCollection.js";
import Map from "@giro3d/giro3d/entities/Map.js";
import WmtsSource from "@giro3d/giro3d/sources/WmtsSource.js";

function bindToggle(id, onChange) {
  const element = document.getElementById(id);
  if (!(element instanceof HTMLInputElement)) {
    throw new Error(
      "invalid binding element: expected HTMLButtonElement, got: " +
        element.constructor.name,
    );
  }

  element.oninput = function oninput() {
    onChange(element.checked);
  };

  const callback = (v) => {
    element.checked = v;
    onChange(element.checked);
  };

  return [callback, element.checked, element];
}

Instance.registerCRS(
  "EPSG:3946",
  "+proj=lcc +lat_1=45.25 +lat_2=46.75 +lat_0=46 +lon_0=3 +x_0=1700000 +y_0=5200000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs",
);

const extent = Extent.fromCenterAndSize(
  "EPSG:3946",
  { x: 1842741, y: 5174060 },
  30000,
  30000,
);

const instance = new Instance({
  target: "view",
  crs: "EPSG:3946",
});

const map = new Map({ extent });

instance.add(map);

const capabilitiesUrl =
  "https://data.geopf.fr/wmts?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities";

WmtsSource.fromCapabilities(capabilitiesUrl, {
  layer: "HR.ORTHOIMAGERY.ORTHOPHOTOS",
})
  .then((orthophotoWmts) => {
    map.addLayer(
      new ColorLayer({
        name: "wmts_orthophotos",
        extent: map.extent,
        source: orthophotoWmts,
      }),
    );
  })
  .catch(console.error);

// define the source of our data
const busLinesSource = new VectorSource({
  format: new GeoJSON(),
  url: function url(tileExtent) {
    return `${
      "https://download.data.grandlyon.com/wfs/rdata" +
      "?SERVICE=WFS" +
      "&VERSION=2.0.0" +
      "&request=GetFeature" +
      "&typename=tcl_sytral.tcllignebus_2_0_0" +
      "&outputFormat=application/json;%20subtype=geojson" +
      "&SRSNAME=EPSG:3946" +
      "&startIndex=0" +
      "&bbox="
    }${tileExtent.join(",")},EPSG:3946`;
  },
  strategy: tile(createXYZ({ tileSize: 512 })),
});

function randColor() {
  const hue = MathUtils.randFloat(0, 1);
  return new Color().setHSL(hue, 0.8, 0.5, "srgb");
}

function makeStyle() {
  return {
    color: randColor(),
    width: 8,
    renderOrder: MathUtils.randInt(0, 200),
  };
}

const lineStyles = {};

// Create the `FeatureCollection` entity that will load our features as meshes.
const busLines = new FeatureCollection({
  source: busLinesSource,
  extent,
  minLevel: 0,
  maxLevel: 0,
  elevation: 50,
  // we can modify the mesh through the `style` property
  style: (feat) => {
    const lineName = feat.getProperties().ligne;
    const selected = feat.get("selected");
    // color according to line name
    if (!lineStyles[lineName]) {
      lineStyles[lineName] = makeStyle();
    }
    const { color, width, renderOrder } = lineStyles[lineName];
    let lineWidth = width ?? 20;
    let lineColor = color ?? new Color("white");

    if (selected) {
      lineWidth *= 1.5;
      lineColor = "red";
    }

    return {
      stroke: {
        color: lineColor,
        lineWidth,
        lineWidthUnits: "world",
        depthTest: false,
        renderOrder: selected ? 2000 : renderOrder,
      },
    };
  },
});
busLines.name = "bus lines";

// Let's add our bus lines feature collection to the scene
instance.add(busLines);

// define another source
const busStopSource = new VectorSource({
  format: new GeoJSON(),
  url: function url(tileExtent) {
    return `${
      "https://download.data.grandlyon.com/wfs/rdata" +
      "?SERVICE=WFS" +
      "&VERSION=2.0.0" +
      "&request=GetFeature" +
      "&typename=tcl_sytral.tclarret" +
      "&outputFormat=application/json; subtype=geojson" +
      "&SRSNAME=EPSG:3946" +
      "&bbox="
    }${tileExtent.join(",")},EPSG:3946`;
  },
  strategy: tile(createXYZ({ tileSize: 512 })),
});
// Create the `FeatureCollection` entity that will load our features as meshes.
const busStops = new FeatureCollection({
  source: busStopSource,
  extent,
  minLevel: 0,
  maxLevel: 0,
  elevation: 50,
  style: (feat) => {
    const selected = feat.get("selected");
    const image = "https://3d.oslandia.com/giro3d/images/bus-front.png";

    return {
      point: {
        color: "white",
        pointSize: selected ? 40 : 20,
        image,
        renderOrder: selected ? 3000 : 2500,
      },
    };
  },
});
busStops.name = "bus stops";
instance.add(busStops);

// add a skybox background, just to look nicer :-)
const cubeTextureLoader = new CubeTextureLoader();
cubeTextureLoader.setPath("image/skyboxsun25deg_zup/");
const cubeTexture = cubeTextureLoader.load([
  "px.jpg",
  "nx.jpg",
  "py.jpg",
  "ny.jpg",
  "pz.jpg",
  "nz.jpg",
]);
instance.scene.background = cubeTexture;

const center = extent.centerAsVector3();

instance.view.camera.position.set(center.x - 300, center.y - 300, 5000);
instance.view.camera.lookAt(center);

const controls = new MapControls(instance.view.camera, instance.domElement);
controls.target = extent.centerAsVector3();
controls.saveState();
controls.enableDamping = true;
controls.dampingFactor = 0.2;
instance.view.setControls(controls);

const labelElement = document.createElement("div");
labelElement.classList.value = "badge rounded-pill text-bg-light";
labelElement.style.marginTop = "2rem";

const text = document.createElement("span");
text.style.marginLeft = "0.5rem";

const busStopSymbol = document.createElement("i");
busStopSymbol.classList.add("bi", "bi-geo-alt-fill");

const busLineSymbol = document.createElement("i");
busLineSymbol.classList.add("bi", "bi-bus-front-fill");

labelElement.appendChild(text);

const label = new CSS2DObject(labelElement);

label.visible = false;
instance.add(label);

let previousObjects = [];
const objectsToUpdate = [];

function pick(e) {
  previousObjects.forEach((obj) => obj.userData.feature.set("selected", false));

  const pickResults = instance.pickObjectsAt(e, {
    sortByDistance: true,
    where: [busStops, busLines],
  });

  const found = pickResults[0];

  if (found) {
    const obj = found.object;
    const feature = obj.userData.feature;
    if (feature) {
      feature.set("selected", true);
      objectsToUpdate.push(obj);
    }
    if (found.entity === busStops) {
      text.innerText = `Bus stop "${feature.get("nom")}"`;
      labelElement.insertBefore(busStopSymbol, text);
      busLineSymbol.remove();
    } else if (found.entity === busLines) {
      text.innerText = `Bus line ${feature.get("ligne")}`;
      labelElement.insertBefore(busLineSymbol, text);
      busStopSymbol.remove();
    }

    // Virtually any inner markup is supported, here we're just inserting text
    label.name = text.innerText;
    // take the middle vertex as position
    label.position.set(found.point.x, found.point.y, found.point.z);
    label.updateMatrixWorld();
    label.visible = true;
    instance.notifyChange(label);
  } else {
    label.visible = false;
    instance.notifyChange(label);
  }

  busLines.updateStyles();
  busStops.updateStyles();
  previousObjects = [...objectsToUpdate];
  objectsToUpdate.length = 0;
}

instance.domElement.addEventListener("mousemove", pick);

bindToggle("showBusStops", (v) => {
  busStops.visible = v;
  instance.notifyChange();
});
bindToggle("showBusLines", (v) => {
  busLines.visible = v;
  instance.notifyChange();
});
bindToggle("showMap", (v) => {
  map.visible = v;
  instance.notifyChange();
});

Inspector.attach("inspector", instance);

<!doctype html>
<html lang="en">
  <head>
    <title>WFS as 3D meshes</title>
    <meta charset="UTF-8" />
    <meta name="name" content="wfs_mesh" />
    <meta
      name="description"
      content="Display features from a WFS source as 3D meshes"
    />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />

    <link rel="icon" href="https://giro3d.org/images/favicon.svg" />
    <link
      href="https://giro3d.org/assets/bootstrap-custom.css"
      rel="stylesheet"
    />
    <script src="https://giro3d.org/assets/bootstrap.bundle.min.js"></script>
    <link
      rel="stylesheet"
      type="text/css"
      href="https://giro3d.org/latest/css/example.css"
    />
  </head>

  <body>
    <div id="view" class="m-0 p-0 w-100 h-100"></div>
    <div
      id="inspector"
      class="position-absolute top-0 start-0 mh-100 overflow-auto"
    ></div>

    <div class="m-2 position-absolute top-0 end-0">
      <div class="card m-1">
        <div class="card-header">Options</div>

        <fieldset class="container m-1">
          <div class="form-check form-switch">
            <input
              class="form-check-input"
              type="checkbox"
              checked="true"
              role="switch"
              id="showMap"
            />
            <label class="form-check-label" for="showMap">Map</label>
          </div>

          <div class="form-check form-switch">
            <input
              class="form-check-input"
              type="checkbox"
              checked="true"
              role="switch"
              id="showBusLines"
            />
            <label class="form-check-label" for="showBusLines">Bus lines</label>
          </div>

          <div class="form-check form-switch">
            <input
              class="form-check-input"
              type="checkbox"
              checked="true"
              role="switch"
              id="showBusStops"
            />
            <label class="form-check-label" for="showBusStops">Bus stops</label>
          </div>
        </fieldset>
      </div>
    </div>

    <script type="module" src="index.js"></script>
    <script>
      /* activate popovers */
      const popoverTriggerList = [].slice.call(
        document.querySelectorAll('[data-bs-toggle="popover"]'),
      );
      popoverTriggerList.map(
        // bootstrap is used as script in the template, disable warning about undef
        // eslint-disable-next-line no-undef
        (popoverTriggerEl) =>
          new bootstrap.Popover(popoverTriggerEl, {
            trigger: "hover",
            placement: "left",
            content: document.getElementById(
              popoverTriggerEl.getAttribute("data-bs-content"),
            ).innerHTML,
            html: true,
          }),
      );
    </script>
  </body>
</html>

{
    "name": "wfs_mesh",
    "dependencies": {
        "@giro3d/giro3d": "0.39.0"
    },
    "devDependencies": {
        "vite": "^3.2.3"
    },
    "scripts": {
        "start": "vite",
        "build": "vite build"
    }
}