import TileWMS from 'ol/source/TileWMS.js';
import { MapControls } from 'three/examples/jsm/controls/MapControls.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 TiledImageSource from '@giro3d/giro3d/sources/TiledImageSource.js';
import ElevationLayer from '@giro3d/giro3d/core/layer/ElevationLayer.js';
import Coordinates from '@giro3d/giro3d/core/geographic/Coordinates.js';
import BilFormat from '@giro3d/giro3d/formats/BilFormat.js';
import Map from '@giro3d/giro3d/entities/Map.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';
import StatusBar from './widgets/StatusBar.js';

// # Planar (EPSG:3946) viewer

// Defines projection that we will use (taken from https://epsg.io/3946, Proj4js section)
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');

// Defines geographic extent: CRS, min/max X, min/max Y
const extent = new Extent(
    'EPSG:3946',
    1837816.94334, 1847692.32501,
    5170036.4587, 5178412.82698,
);

// `viewerDiv` will contain giro3d' rendering area (the canvas element)
const viewerDiv = document.getElementById('viewerDiv');

// Creates the giro3d instance
const instance = new Instance(viewerDiv, { crs: 'EPSG:3946' });

// Adds the map that will contain the layers.
const map = new Map('planar', { extent, hillshading: true, backgroundColor: 'white' });
instance.add(map);

// Adds a WMS imagery layer
const colorSource = new TiledImageSource({
    source: new TileWMS({
        url: 'https://wxs.ign.fr/ortho/geoportail/r/wms',
        projection: 'EPSG:3946',
        params: {
            LAYERS: ['HR.ORTHOIMAGERY.ORTHOPHOTOS'],
            FORMAT: 'image/jpeg',
        },
    }),
});

// Define a smaller extent for the layer.
const layerExtent = extent.withMargin(-1000, -1000);

const colorLayer = new ColorLayer(
    'wms_imagery',
    {
        source: colorSource,
        extent: layerExtent,
    },
);
map.addLayer(colorLayer);

// Adds a WMS elevation layer
const elevationSource = new TiledImageSource({
    source: new TileWMS({
        url: 'https://wxs.ign.fr/altimetrie/geoportail/r/wms',
        projection: 'EPSG:3946',
        crossOrigin: 'anonymous',
        params: {
            LAYERS: ['ELEVATION.ELEVATIONGRIDCOVERAGE.HIGHRES'],
            FORMAT: 'image/x-bil;bits=32',
        },
    }),
    format: new BilFormat(),
    noDataValue: -1000,
});

const elevationLayer = new ElevationLayer(
    'wms_elevation',
    {
        extent,
        source: elevationSource,
    },
);

map.addLayer(elevationLayer);

// Sets the camera position
const cameraPosition = new Coordinates(
    'EPSG:3946',
    extent.west(), extent.south(), 2000,
).xyz();
instance.camera.camera3D.position.copy(cameraPosition);

// Creates controls
const controls = new MapControls(instance.camera.camera3D, instance.domElement);

// Then looks at extent's center
controls.target = extent.center().xyz();
controls.saveState();

controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.maxPolarAngle = Math.PI / 2.3;

instance.useTHREEControls(controls);

Inspector.attach(document.getElementById('panelDiv'), instance);
StatusBar.bind(instance);