feat(edit-demo): unzip demo for easy diffing

electron-utils.ts

@@ -1,4 +1,7 @@
 import cls from "./src/services/cls.js";
+import fs from "fs/promises";
+import fsExtra from "fs-extra";
+import path from "path";
 
 export async function initializeDatabase() {
     const sqlInit = (await import("./src/services/sql_init.js")).default;
@@ -55,3 +58,27 @@ export function importData(input: Buffer, rootId: string) {
     });
 
 }
+
+export async function extractZip(zipFilePath: string, outputPath: string) {
+    const deferred = (await import("./src/services/utils.js")).deferred;
+
+    const promise = deferred<void>()
+    setTimeout(async () => {
+        // Then extract the zip.
+        const { readZipFile, readContent } = (await import("./src/services/import/zip.js"));
+        await readZipFile(await fs.readFile(zipFilePath), async (zip, entry) => {
+            // We ignore directories since they can appear out of order anyway.
+            if (!entry.fileName.endsWith("/")) {
+                const destPath = path.join(outputPath, entry.fileName);
+                const fileContent = await readContent(zip, entry);
+
+                await fsExtra.mkdirs(path.dirname(destPath));
+                await fs.writeFile(destPath, fileContent);
+            }
+
+            zip.readEntry();
+        });
+        promise.resolve();
+    }, 1000);
+    await promise;
+}