import VectorLayer from 'ol/layer/Vector';
import {Vector as VectorSource} from 'ol/source.js';
import GeoJSON from 'ol/format/GeoJSON.js';

import Hls from 'hls.js';

import {Style} from 'ol/style.js';
import Icon from 'ol/style/Icon.js';

import states from './data/states.js';

import pin from './pin.svg?url'; // TODO: remove `?url`?

// https://en.wikipedia.org/wiki/Department_of_transportation#List_of_U.S._state_and_insular_area_departments_of_transportation
const dot_names = {
    mn: "Minnesota: MNDOT/511MN",
    ia: "Iowa: Iowa DOT/511IA",
    wi: "Wisconsin: WisDOT/511WI",
    co: "Colorado: CDOT/COtrip",
    ks: "Kansas: KDOT/KanDrive",
    ne: "Nebraska: NDOT/Nebraska 511",
    ma: "Massachusetts: MassDOT/Mass511",
}

let vectorLayers = []

for (let [state, url] of Object.entries(states)) {
    const vectorLayer = new VectorLayer({
        source: new VectorSource({
            url: url,
            format: new GeoJSON,
        }),
        style: new Style({
            image: new Icon({
                anchor: [0.5, 1],
                src: pin,
            }),
        }),
    });

    vectorLayer.customPopup = function(feature) {
        const view = feature.values_.originalData.views[0];
        if (view.category.toLowerCase() == "video") {
            return `<video style="max-width: 80vw; max-height: 80vh;" id="popupVideo" autoplay controls></video>`;
        } else if (view.category.toLowerCase() == "image") {
            return `<img style="max-width: 80vw; max-height: 80vh;" src="${view.url}">`;
        } else {
            throw new Exception(`unknown category ${view.category}`);
        }
    };

    vectorLayer.customPopupCallback = function(feature) {
        const view = feature.values_.originalData.views[0];
        if (view.category.toLowerCase() == "video") {
            const video = document.getElementById('popupVideo');

            const videoSrc = view.sources[0].src;
            if (Hls.isSupported()) {
                var hls = new Hls();
                hls.loadSource(videoSrc);
                hls.attachMedia(video);
            }
            // iDevice support, untested (only works in Safari; required for iPhones)
            else if (video.canPlayType('application/vnd.apple.mpegurl')) {
                video.src = videoSrc;
            }
        }
    }
    vectorLayers.push({
        name: dot_names[state] ?? state,
        layer: vectorLayer,
    });
}

export default vectorLayers;