lavender.software/src/webring/webring-0.2.0.js

55 lines
1.7 KiB
JavaScript

const currentScript = document.currentScript;
const ctx = currentScript.dataset;
// charlotte's ad-hoc terse javascript framework!
const CSS_PREFIX = "lavender-webring";
const e = (tag, props = {}, children = []) => {
let element = Object.assign(document.createElement(tag), props);
element.append(...children);
return element;
};
const t = (text) => document.createTextNode(text);
const c = (className) => ({ className: `${CSS_PREFIX}-${className}` });
const h = (href) => ({ href });
const createDescriptionContent = () =>
ctx.description != null
? [t(ctx.description)]
: [
t("This site is part of the "),
e("a", h("https://lavender.software"), [t("lavender.software")]),
t(" webring!"),
];
const renderWebring = (currSite, prevSite, nextSite) => {
currentScript.replaceWith(
e("aside", c("container"), [
e("section", c("description"), createDescriptionContent()),
e("ul", c("site-links"), [
e("li", c("prev-site"), [e("a", h(prevSite.url), [t(prevSite.name)])]),
e("li", c("curr-site"), [e("a", h(currSite.url), [t(currSite.name)])]),
e("li", c("next-site"), [e("a", h(nextSite.url), [t(nextSite.name)])]),
]),
])
);
};
(async () => {
const data = await fetch("https://lavender.software/webring/data.json").then(
(r) => r.json()
);
let thisSiteIdx = data.findIndex((site) => site.id == ctx.siteId);
if (thisSiteIdx === -1) {
throw new Error(
`Could not find site by id '${ctx.siteId}' in the webring!`
);
}
let currSite = data[thisSiteIdx];
let prevSite = data[(thisSiteIdx + data.length - 1) % data.length];
let nextSite = data[(thisSiteIdx + 1) % data.length];
renderWebring(currSite, prevSite, nextSite);
})();