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silverbullet/plugs/core/cloud.ts
2023-08-20 17:51:00 +02:00

86 lines
2.0 KiB
TypeScript

import { renderToText, replaceNodesMatching } from "$sb/lib/tree.ts";
import { parseMarkdown } from "$sb/silverbullet-syscall/markdown.ts";
import { FileMeta } from "$sb/types.ts";
export const cloudPrefix = "💭 ";
export async function readFileCloud(
name: string,
): Promise<{ data: Uint8Array; meta: FileMeta } | undefined> {
const originalUrl = name.substring(
cloudPrefix.length,
name.length - ".md".length,
);
let url = originalUrl;
if (!url.includes("/")) {
url += "/index";
}
if (!url.startsWith("127.0.0.1")) {
url = `https://${url}`;
} else {
url = `http://${url}`;
}
let text = "";
try {
const r = await fetch(`${encodeURI(url)}.md`);
text = await r.text();
if (!r.ok) {
text = `ERROR: ${text}`;
}
} catch (e: any) {
console.error("ERROR thrown", e.message);
text = `ERROR: ${e.message}`;
}
text = await translateLinksWithPrefix(
text,
`${cloudPrefix}${originalUrl.split("/")[0]}/`,
);
return {
data: new TextEncoder().encode(text),
meta: {
name,
contentType: "text/markdown",
lastModified: 0,
size: text.length,
perm: "ro",
},
};
}
export function writeFileCloud(
name: string,
): Promise<FileMeta> {
console.log("Writing cloud file", name);
return getFileMetaCloud(name);
}
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(cloudPrefix)) {
// 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",
});
}