import { setupTest, startEngine, startClientInTmux, wait, tmuxSendKeys, tmuxCapturePane, teardownTest } from './test_utils';

export async function testRecordOnMissingChannel(): Promise<void> {
  console.log("\nTest: RECORD ON MISSING CHANNEL (col 2, row 2)");
  setupTest();
  const engine = await startEngine();
  await startClientInTmux();
  // Do NOT add any channels – only channel 0 exists
  await wait(500);

  // Navigate to row 2, col 2 (two rights, two downs)
  tmuxSendKeys("looper", "0", "l");
  tmuxSendKeys("looper", "0", "l");
  await wait(200);
  tmuxSendKeys("looper", "0", "j");
  tmuxSendKeys("looper", "0", "j");
  await wait(200);

  // Verify selection line
  let pane = tmuxCapturePane("looper", "0");
  if (!pane.includes("Selected: Grid 0, Row 2, Col 2")) {
    console.log("  FAIL: Could not navigate to Row 2, Col 2");
    engine.kill(); teardownTest();
    throw new Error("Navigation to (2,2) failed");
  }

  // Press 't' to start recording (no extra key – TUI polls itself)
  tmuxSendKeys("looper", "0", "t");
  await wait(1500);

  // Check the grid shows 'R' near cell (2,2)
  pane = tmuxCapturePane("looper", "0");
  const paneLines = pane.split("\n");
  let cellLine = -1, recordLine = -1;
  for (let i = 0; i < paneLines.length; i++) {
    if (paneLines[i].includes(" 2")) cellLine = i;
    if (paneLines[i].includes("R"))  recordLine = i;
  }
  if (cellLine !== -1 && recordLine !== -1 && Math.abs(recordLine - cellLine) <= 2) {
    console.log("  PASS: Grid shows 'R' indicator near cell 2");
  } else {
    console.log("  FAIL: Could not find 'R' near cell 2 in pane");
    console.log("  Pane excerpt:\n" + pane.slice(0, 1000));
    engine.kill(); teardownTest();
    throw new Error("Grid indicator missing for col 2");
  }

  engine.kill();
  teardownTest();
}