async function loadScript(scenario, svg, script) {
return new Promise((resolve, reject) => {
const scriptEl = document.createElementNS("http://www.w3.org/2000/svg", 'script');
scriptEl.onload = () => {
console.log('map.js loaded');
resolve();
};
scriptEl.onerror = () => {
reject(Error('Script failed to load.'));
};
const dataset = scenario.querySelector('script')?.dataset || {};
if ('cols' in dataset && 'rows' in dataset) {
scriptEl.dataset.rows = dataset.rows;
scriptEl.dataset.cols = dataset.cols;
}
// scriptEl.setAttributeNS(null, 'href', '../../map.js');
scriptEl.setAttributeNS(null, 'href', `../../${script}.js`);
svg.append(scriptEl);
});
}
export async function requestResource(url) {
return new Promise((resolve, reject) => {
const request = new XMLHttpRequest();
request.open('GET', url, true);
request.responseType = 'document';
request.onload = function() {
if (request.status === 200) {
resolve(request.response);
} else {
reject(Error('Image didn\'t load successfully; error code:' + request.statusText));
}
};
request.onerror = function() {
reject(Error('There was a network error.'));
};
request.send();
});
}
export async function build(svg, request) {
const defs = svg.querySelector('defs');
const gb = svg.querySelector('.gameboard');
const grid = svg.querySelector('.grid');
const scenario = await request;
const startLocs = scenario.querySelector('.start-locations');
const externalResourceEls = Array.from(scenario.querySelectorAll('use[href*=".svg"'));
const refs = externalResourceEls.reduce((acc, el) => {
const href = el.getAttributeNS(null, 'href');
const [filename] = href.match(/.+\.svg/);
const fragmentIdentifier = href.split('.svg').pop();
(acc[filename] ??= new Set()).add(fragmentIdentifier);
el.setAttributeNS(null, 'href', fragmentIdentifier);
return acc;
}, {});
await Promise.all(
Object.keys(refs).map(filename => requestResource(`assets/images/${filename}`))
).then(result => {
Object.keys(refs).forEach((filename, index) => {
const external = result[index];
refs[filename].forEach(fragmentIdentifier => {
external
.querySelectorAll(`${fragmentIdentifier} use`)
.forEach(el => refs[filename].add(el.getAttributeNS(null, 'href')));
});
const refsQuery = [...refs[filename]].join(', ');
external.querySelectorAll(refsQuery).forEach(node =>
defs.append(svg.ownerDocument.importNode(node, true))
);
});
});
scenario.querySelectorAll('use.mapsheet').forEach(el =>
gb.querySelector('#background').after(svg.ownerDocument.importNode(el, true))
);
if (startLocs) grid.before(svg.ownerDocument.importNode(startLocs, true));
const scenarioGrid = scenario.querySelector('.grid');
if (scenarioGrid) {
grid.replaceWith(svg.ownerDocument.importNode(scenarioGrid, true));
}
defs.replaceWith(scenario.querySelector('defs'));
await loadScript(scenario, svg, 'radial')
return loadScript(scenario, svg, 'map');
}