import { Vector3, Color } from "three";
import { MapControls } from "three/examples/jsm/controls/MapControls.js";

import { Circle, Fill, Stroke, Style } from "ol/style.js";

import Instance from "@giro3d/giro3d/core/Instance.js";
import Extent from "@giro3d/giro3d/core/geographic/Extent.js";
import WmtsSource from "@giro3d/giro3d/sources/WmtsSource.js";
import VectorSource from "@giro3d/giro3d/sources/VectorSource.js";
import ColorLayer from "@giro3d/giro3d/core/layer/ColorLayer.js";
import ElevationLayer from "@giro3d/giro3d/core/layer/ElevationLayer.js";
import Map from "@giro3d/giro3d/entities/Map.js";
import Inspector from "@giro3d/giro3d/gui/Inspector.js";
import BilFormat from "@giro3d/giro3d/formats/BilFormat.js";
import DrawTool from "@giro3d/giro3d/interactions/DrawTool.js";

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

  element.onclick = () => {
    onClick(element);
  };

  return element;
}

Instance.registerCRS(
  "EPSG:2154",
  "+proj=lcc +lat_0=46.5 +lon_0=3 +lat_1=49 +lat_2=44 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs",
);
Instance.registerCRS(
  "IGNF:WGS84G",
  'GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]',
);

const instance = new Instance({
  target: "view",
  crs: "EPSG:2154",
  backgroundColor: null, // To make the canvas transparent
});

const extent = Extent.fromCenterAndSize(
  "EPSG:2154",
  { x: 895_055, y: 6_247_049 },
  20_000,
  20_000,
);

const map = new Map({
  extent,
  backgroundColor: "gray",
  hillshading: {
    enabled: true,
    elevationLayersOnly: true,
  },
});
instance.add(map);

const noDataValue = -1000;

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

WmtsSource.fromCapabilities(capabilitiesUrl, {
  layer: "ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES",
  format: new BilFormat(),
  noDataValue,
})
  .then((elevationWmts) => {
    map.addLayer(
      new ElevationLayer({
        name: "wmts_elevation",
        extent: map.extent,
        resolutionFactor: 0.5,
        minmax: { min: 0, max: 500 },
        noDataOptions: {
          replaceNoData: false,
        },
        source: elevationWmts,
      }),
    );
  })
  .catch(console.error);

const color = new Color("#2978b4").convertLinearToSRGB();

const fill = new Fill({
  color: `rgba(${color.r * 255}, ${color.g * 255}, ${color.b * 255}, 0.35)`,
});

const stroke = new Stroke({
  color: "#2978b4",
  width: 4,
});

const strokeBorder = new Stroke({
  color: "white",
  width: 6,
});

const style0 = new Style({
  stroke,
});

const style1 = new Style({
  fill,
  stroke: strokeBorder,
  image: new Circle({
    radius: 8,
    fill: new Fill({
      color: "#2978b4",
    }),
    stroke: new Stroke({
      color: "white",
      width: 3,
    }),
  }),
});

const vectorSource = new VectorSource({
  dataProjection: "EPSG:4326",
  style: [style1, style0],
  data: [],
});

const vectorLayer = new ColorLayer({
  source: vectorSource,
  extent: map.extent,
});

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

    map.addLayer(vectorLayer);
  })
  .catch(console.error);

instance.view.camera.position.set(892_342, 6_246_816, 3000);
const lookAt = new Vector3(892_342, 6_246_816 + 1, 50);
instance.view.camera.lookAt(lookAt);

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

Inspector.attach("inspector", instance);

const tool = new DrawTool({
  instance,
});

const removeFeatures = bindButton("remove-features", (button) => {
  vectorSource.clear();
  button.disabled = true;
});

const disableButtons = (disable) => {
  const buttons = document
    .getElementById("group")
    .getElementsByTagName("button");
  for (let i = 0; i < buttons.length; i++) {
    const button = buttons.item(i);
    button.disabled = disable;
  }
};

const createFeature = (shape) => {
  if (shape) {
    const feature = shape.toOpenLayersFeature();

    vectorSource.addFeature(feature);

    removeFeatures.disabled = false;

    instance.remove(shape);
  }

  controls.enabled = true;

  disableButtons(false);
};

bindButton("point", () => {
  controls.enabled = false;
  disableButtons(true);
  tool.createPoint().then(createFeature);
});

bindButton("multipoint", () => {
  controls.enabled = false;
  disableButtons(true);
  tool.createMultiPoint().then(createFeature);
});

bindButton("linestring", () => {
  controls.enabled = false;
  disableButtons(true);
  tool.createLineString().then(createFeature);
});

bindButton("polygon", () => {
  controls.enabled = false;
  disableButtons(true);
  tool.createPolygon().then(createFeature);
});

<!doctype html>
<html lang="en">
  <head>
    <title>Digitizing vector features</title>
    <meta charset="UTF-8" />
    <meta name="name" content="digitization" />
    <meta
      name="description"
      content="Draw vectors and add them to a map layer"
    />
    <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/examples/css/example.css"
    />

    <style>
      #view canvas {
        background: rgb(132, 170, 182);
        background: radial-gradient(
          circle,
          rgba(132, 170, 182, 1) 0%,
          rgba(37, 44, 48, 1) 100%
        );
      }
    </style>
  </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="side-pane-with-status-bar" class="pe-none">
      <!--Parameters -->
      <div class="card">
        <h5 class="card-header">Parameters</h5>

        <!-- tooltip -->
        <span
          class="badge bg-secondary position-absolute top-0 end-0 m-2"
          data-bs-toggle="popover"
          data-bs-content="tooltip"
          >?</span
        >
        <p class="card-text d-none" id="tooltip">
          Use right-click to complete the drawing of shapes.
        </p>

        <div class="card-body">
          <!-- Geometry types -->
          <div class="d-grid gap-2 mx-auto" id="group">
            <button type="button" class="btn btn-primary" id="point">
              Point
            </button>
            <button type="button" class="btn btn-primary" id="multipoint">
              MultiPoint
            </button>
            <button type="button" class="btn btn-primary" id="linestring">
              LineString
            </button>
            <button type="button" class="btn btn-primary" id="polygon">
              Polygon
            </button>

            <button
              type="button"
              class="btn btn-danger"
              disabled
              id="remove-features"
            >
              <i class="bi bi-trash-fill"></i>
              Remove features
            </button>
          </div>
        </div>
      </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": "digitization",
    "dependencies": {
        "@giro3d/giro3d": "0.41.0"
    },
    "devDependencies": {
        "vite": "^3.2.3"
    },
    "scripts": {
        "start": "vite",
        "build": "vite build"
    }
}