Replace DBGate with local Adminer

scripts/start-adminer.ts

@@ -0,0 +1,66 @@
+import { createWriteStream, existsSync, mkdirSync } from "node:fs";
+import { get } from "node:https";
+import { dirname, resolve } from "node:path";
+import { spawn, spawnSync } from "node:child_process";
+
+const adminerFile = resolve("tools/adminer/adminer.php");
+const localPhp = resolve("tools/php/php.exe");
+const host = process.env.ADMINER_HOST || "127.0.0.1";
+const port = process.env.ADMINER_PORT || "8080";
+const adminerDownloadUrl = process.env.ADMINER_DOWNLOAD_URL || "https://www.adminer.org/latest.php";
+const phpCommand = existsSync(localPhp) ? localPhp : "php";
+
+if (!commandExists(phpCommand)) {
+  console.error("Adminer needs PHP CLI. Install PHP first, then run npm run adminer again.");
+  process.exit(1);
+}
+
+if (!existsSync(adminerFile)) {
+  mkdirSync(dirname(adminerFile), { recursive: true });
+  await downloadFile(adminerDownloadUrl, adminerFile);
+}
+
+const child = spawn(phpCommand, ["-S", `${host}:${port}`, adminerFile], {
+  stdio: "inherit",
+  shell: true,
+});
+
+child.on("exit", (code, signal) => {
+  if (signal) {
+    process.kill(process.pid, signal);
+    return;
+  }
+
+  process.exit(code ?? 0);
+});
+
+function commandExists(command: string): boolean {
+  const result = spawnSync(command, ["-v"], { stdio: "ignore", shell: true });
+  return result.status === 0;
+}
+
+function downloadFile(url: string, target: string): Promise<void> {
+  return new Promise((resolveDownload, rejectDownload) => {
+    const request = get(url, (response) => {
+      if (response.statusCode && response.statusCode >= 300 && response.statusCode < 400 && response.headers.location) {
+        downloadFile(response.headers.location, target).then(resolveDownload, rejectDownload);
+        return;
+      }
+
+      if (response.statusCode !== 200) {
+        rejectDownload(new Error(`Adminer download failed with HTTP ${response.statusCode}`));
+        return;
+      }
+
+      const file = createWriteStream(target);
+      response.pipe(file);
+      file.on("finish", () => {
+        file.close();
+        resolveDownload();
+      });
+      file.on("error", rejectDownload);
+    });
+
+    request.on("error", rejectDownload);
+  });
+}