Migrate to Deno (#86)

Big bang migration to Deno 🤯

plugs/core/cloud.ts

@@ -0,0 +1,78 @@
+import type {
+  FileData,
+  FileEncoding,
+} from "../../common/spaces/space_primitives.ts";
+import { renderToText, replaceNodesMatching } from "../../common/tree.ts";
+import type { FileMeta } from "../../common/types.ts";
+import { parseMarkdown } from "../../syscall/silverbullet-syscall/markdown.ts";
+
+const pagePrefix = "💭 ";
+
+export async function readFileCloud(
+  name: string,
+  encoding: FileEncoding,
+): Promise<{ data: FileData; meta: FileMeta } | undefined> {
+  let 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 {
+    let r = await fetch(`${url}.md`);
+    text = await r.text();
+    if (r.status !== 200) {
+      text = `ERROR: ${text}`;
+    }
+  } catch (e: any) {
+    console.error("ERROR", e.message);
+    text = e.message;
+  }
+  return {
+    data: await translateLinksWithPrefix(
+      text,
+      `${pagePrefix}${originalUrl.split("/")[0]}/`,
+    ),
+    meta: {
+      name,
+      contentType: "text/markdown",
+      lastModified: 0,
+      size: text.length,
+      perm: "ro",
+    },
+  };
+}
+
+async function translateLinksWithPrefix(
+  text: string,
+  prefix: string,
+): Promise<string> {
+  let tree = await parseMarkdown(text);
+  replaceNodesMatching(tree, (tree) => {
+    if (tree.type === "WikiLinkPage") {
+      // Add the prefix in the link text
+      tree.children![0].text = prefix + tree.children![0].text;
+    }
+    return undefined;
+  });
+  text = renderToText(tree);
+  return text;
+}
+
+export async function getFileMetaCloud(name: string): Promise<FileMeta> {
+  return {
+    name,
+    size: 0,
+    contentType: "text/markdown",
+    lastModified: 0,
+    perm: "ro",
+  };
+}