import { MapControls } from 'three/examples/jsm/controls/MapControls.js';

import Extent from '@giro3d/giro3d/core/geographic/Extent.js';
import CogSource from '@giro3d/giro3d/sources/CogSource.js';
import Instance from '@giro3d/giro3d/core/Instance.js';
import ColorLayer from '@giro3d/giro3d/core/layer/ColorLayer.js';
import Map from '@giro3d/giro3d/entities/Map.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';



// Define geographic extent: CRS, min/max X, min/max Y
const extent = new Extent('EPSG:3857', 1818329.448, 1987320.77, 6062229.082, 6231700.791);
const center = extent.centerAsVector3();

// `viewerDiv` will contain Giro3D' rendering area (the canvas element)
const viewerDiv = document.getElementById('viewerDiv');

// Instantiate Giro3D
const instance = new Instance(viewerDiv, {
    crs: extent.crs(),
    renderer: {
        clearColor: 0x0a3b59,
    },
});

// Instantiate the camera
instance.camera.camera3D.position.set(center.x, center.y, 250000);

// Instantiate the controls
const controls = new MapControls(instance.camera.camera3D, instance.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.2;
controls.target.set(center.x, center.y + 1, center.z);

instance.useTHREEControls(controls);

// Construct a map and add it to the instance
const map = new Map('planar', { extent });
instance.add(map);

// Data coming from the same source as
// https://openlayers.org/en/latest/examples/cog-math-multisource.html
const sources = {
    // LZW compression, RGB colorspace
    rgb: new CogSource({
        url: 'https://3d.oslandia.com/giro3d/rasters/TCI.tif',
        crs: extent.crs(),
        channels: [0, 1, 2],
    }),
    // LZW compression, RGB colorspace, 8-bit alpha band
    rgba: new CogSource({
        url: 'https://3d.oslandia.com/giro3d/rasters/TCI-alpha.tif',
        crs: extent.crs(),
        channels: [0, 1, 2, 3],
    }),
    // JPEG compression, YCbCr colorspace
    ycbcr: new CogSource({
        url: 'https://3d.oslandia.com/giro3d/rasters/TCI-YCbCr.tif',
        crs: extent.crs(),
    }),
    // JPEG compression, YCbCr colorspace, 1-bit mask band
    'ycbcr-mask': new CogSource({
        url: 'https://3d.oslandia.com/giro3d/rasters/TCI-YCbCr-mask.tif',
        crs: extent.crs(),
    }),
};

function updateSource(name) {
    map.forEachLayer(layer => map.removeLayer(layer, { disposeLayer: true }));

    const layer = new ColorLayer({ name: 'color-layer', source: sources[name], extent });
    map.addLayer(layer);
}

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


const sourceSelector = document.getElementById('source');
sourceSelector.onchange = () => updateSource(sourceSelector.value);
updateSource(sourceSelector.value);