71 lines
1.9 KiB
TypeScript
71 lines
1.9 KiB
TypeScript
import { nodeAtPos } from "$sb/lib/tree.ts";
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import { editor, markdown } from "$sb/silverbullet-syscall/mod.ts";
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import { events } from "$sb/plugos-syscall/mod.ts";
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type UnfurlOption = {
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id: string;
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name: string;
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};
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export async function unfurlCommand() {
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const mdTree = await markdown.parseMarkdown(await editor.getText());
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const nakedUrlNode = nodeAtPos(mdTree, await editor.getCursor());
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const url = nakedUrlNode!.children![0].text!;
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console.log("Got URL to unfurl", url);
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const optionResponses = await events.dispatchEvent("unfurl:options", url);
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const options: UnfurlOption[] = [];
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for (const resp of optionResponses) {
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options.push(...resp);
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}
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const selectedUnfurl: any = await editor.filterBox(
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"Unfurl",
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options,
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"Select the unfurl strategy of your choice",
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);
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if (!selectedUnfurl) {
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return;
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}
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try {
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const replacement = await events.dispatchEvent(
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`unfurl:${selectedUnfurl.id}`,
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url,
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);
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if (replacement.length === 0) {
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throw new Error("Unfurl failed");
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}
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await editor.replaceRange(
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nakedUrlNode?.from!,
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nakedUrlNode?.to!,
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replacement[0],
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);
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} catch (e: any) {
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await editor.flashNotification(e.message, "error");
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}
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}
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export function titleUnfurlOptions(): UnfurlOption[] {
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return [
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{
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id: "title-unfurl",
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name: "Extract title",
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},
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];
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}
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const titleRegex = /<title[^>]*>\s*([^<]+)\s*<\/title\s*>/i;
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export async function titleUnfurl(url: string): Promise<string> {
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const response = await fetch(url);
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if (response.status < 200 || response.status >= 300) {
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console.error("Unfurl failed", await response.text());
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throw new Error(`Failed to fetch: ${await response.statusText}`);
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}
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const body = await response.text();
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const match = titleRegex.exec(body);
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if (match) {
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return `[${match[1]}](${url})`;
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} else {
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throw new Error("No title found");
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}
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}
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