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import NextPageLoader from "next/dist/client/page-loader";
import getAssetPathFromRoute from "next/dist/shared/lib/router/utils/get-asset-path-from-route";
// import createRouteLoader from "./route-loader";
export function insertStyleSheet(url: string) {
if (document.querySelector(`link[href="${url}"]`)) {
return Promise.resolve();
}
return new Promise((resolve, reject) => {
const link = document.createElement("link");
link.rel = "stylesheet";
link.onload = () => resolve();
link.onerror = () => reject();
link.href = url;
// if (headCount) {
// document.head.insertBefore(headCount, link);
// } else {
document.head.appendChild(link);
// }
});
}
export default class PageLoader extends NextPageLoader {
public routeLoader: RouteLoader;
constructor(_, __, pages) {
super(_, __);
// TODO: assetPrefix?
// this.routeLoader = {}; //createRouteLoader("");
// Rewrite the pages object to omit the entry script
// At this point, the entry point has been loaded so we don't want to do that again.
for (let name in pages) {
for (let i = 0; i < pages[name].length; i += 1) {
const lastDot = pages[name][i].lastIndexOf(".");
if (lastDot == -1) continue;
if (
pages[name][i].substring(lastDot - ".entry".length, lastDot) !==
".entry"
)
continue;
pages[name][i] =
pages[name][i].substring(0, lastDot - ".entry".length) +
pages[name][i].substring(lastDot);
}
}
this.pages = pages;
this.pageList = Object.keys(this.pages);
}
pageList: string[];
pages: Record<string, string[]>;
getPageList() {
return this.pageList;
}
cssQueue = [];
onImportCSS = (event) => {
this.cssQueue.push(
insertStyleSheet(event.detail).then(
() => {},
() => {}
)
);
};
prefetch(route) {
return Promise.resolve({});
}
async loadPage(route: string): Promise<GoodPageCache> {
const assets =
this.pages[route] || this.pages[getAssetPathFromRoute(route)];
var src;
console.log(getAssetPathFromRoute(route), assets);
for (let asset of assets) {
if (!asset.endsWith(".css")) {
src = asset;
break;
}
}
console.assert(src, "Invalid or unknown route passed to loadPage");
document.removeEventListener("onimportcss", this.onImportCSS);
this.cssQueue.length = 0;
document.addEventListener("onimportcss", this.onImportCSS, {
passive: true,
});
try {
const res = await import(src);
if (this.cssQueue.length > 0) {
await Promise.all(this.cssQueue);
this.cssQueue.length = 0;
}
document.removeEventListener("onimportcss", this.onImportCSS);
if (this.cssQueue.length > 0) {
await Promise.all(this.cssQueue);
this.cssQueue.length = 0;
}
return {
page: res.default,
mod: res,
styleSheets: [],
__N_SSG: false,
__N_SSP: false,
};
} catch (exception) {
console.error({ exception });
}
// return this.routeLoader.loadRoute(route).then((res) => {
// debugger;
// if ("component" in res) {
// return {
// page: res.component,
// mod: res.exports,
// styleSheets: res.styles.map((o) => ({
// href: o.href,
// text: o.content,
// })),
// };
// }
// throw res.error;
// });
}
// not used in development!
// prefetch(route: string): Promise<void> {
// return this.routeLoader.prefetch(route);
// }
}
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