import assert from "node:assert/strict";
import test from "node:test";
import { createRemoteBashOps } from "../src/remote-bash.ts";
import type { RemoteExecOptions, RemoteTransport } from "../src/ssh2-transport.ts";

class CapturingTransport implements RemoteTransport {
  calls: Array<{ command: string; cwd: string }> = [];
  connect(): Promise<void> { return Promise.resolve(); }
  dispose(): Promise<void> { return Promise.resolve(); }
  exec(command: string, cwd: string, options: RemoteExecOptions): Promise<{ exitCode: number | null }> {
    this.calls.push({ command, cwd });
    options.onData(Buffer.from("ok\n"));
    return Promise.resolve({ exitCode: 0 });
  }
  capture(): Promise<{ exitCode: number | null; output: Buffer }> { throw new Error("not used"); }
  readFile(): Promise<Buffer> { throw new Error("not used"); }
  ensureReadable(): Promise<void> { throw new Error("not used"); }
  ensureReadableWritable(): Promise<void> { throw new Error("not used"); }
  detectImageMimeType(): Promise<string | null> { throw new Error("not used"); }
  mkdir(): Promise<void> { throw new Error("not used"); }
  writeFile(): Promise<void> { throw new Error("not used"); }
}

test("ssh_bash always executes from the active remote cwd", async () => {
  const connection = { remoteCwd: "/srv/project" };
  const transport = new CapturingTransport();
  const operations = createRemoteBashOps(connection, transport);

  await operations.exec("pwd", "/Users/local/project", { onData() {} });
  assert.deepEqual(transport.calls, [{ command: "pwd", cwd: "/srv/project" }]);

  connection.remoteCwd = "/opt/next-project";
  await operations.exec("npm test", "/another/local/path", { onData() {} });
  assert.deepEqual(transport.calls[1], { command: "npm test", cwd: "/opt/next-project" });
});

test("ssh_bash rejects an invalid non-absolute remote cwd", () => {
  const operations = createRemoteBashOps({ remoteCwd: "relative/path" }, new CapturingTransport());
  assert.throws(
    () => operations.exec("pwd", "/Users/local/project", { onData() {} }),
    /requires an absolute remote cwd/,
  );
});