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silverbullet/plugs/core/cloud.ts
2023-01-16 16:59:45 +01:00

88 lines
2.1 KiB
TypeScript

import type {
FileData,
FileEncoding,
} from "../../common/spaces/space_primitives.ts";
import { renderToText, replaceNodesMatching } from "$sb/lib/tree.ts";
import type { FileMeta } from "../../common/types.ts";
import { parseMarkdown } from "$sb/silverbullet-syscall/markdown.ts";
import { base64EncodedDataUrl } from "../../plugos/asset_bundle/base64.ts";
const pagePrefix = "💭 ";
export async function readFileCloud(
name: string,
encoding: FileEncoding,
): Promise<{ data: FileData; meta: FileMeta } | undefined> {
const originalUrl = name.substring(
pagePrefix.length,
name.length - ".md".length,
);
let url = originalUrl;
if (!url.includes("/")) {
url += "/index";
}
if (!url.startsWith("127.0.0.1")) {
url = `https://${url}`;
} else {
url = `http://${url}`;
}
let text = "";
try {
const r = await fetch(`${url}.md`);
text = await r.text();
if (!r.ok) {
text = `ERROR: ${text}`;
}
} catch (e: any) {
console.error("ERROR thrown", e.message);
text = `ERROR: ${e.message}`;
}
text = await translateLinksWithPrefix(
text,
`${pagePrefix}${originalUrl.split("/")[0]}/`,
);
return {
data: encoding === "utf8" ? text : base64EncodedDataUrl(
"text/markdown",
new TextEncoder().encode(text),
),
meta: {
name,
contentType: "text/markdown",
lastModified: 0,
size: text.length,
perm: "ro",
},
};
}
async function translateLinksWithPrefix(
text: string,
prefix: string,
): Promise<string> {
const tree = await parseMarkdown(text);
replaceNodesMatching(tree, (tree) => {
if (tree.type === "WikiLinkPage") {
// Add the prefix in the link text
if (!tree.children![0].text!.startsWith(pagePrefix)) {
// Only for links that aren't already cloud links
tree.children![0].text = prefix + tree.children![0].text;
}
}
return undefined;
});
text = renderToText(tree);
return text;
}
export function getFileMetaCloud(name: string): Promise<FileMeta> {
return Promise.resolve({
name,
size: 0,
contentType: "text/markdown",
lastModified: 0,
perm: "ro",
});
}