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

export async function testRecordOnHighRow(): Promise<void> {
  console.log("\nTest: RECORD ON HIGH ROW (row 5, col 0) – verifies engine & TUI");
  setupTest();
  const engine = await startEngine();
  await startClientInTmux();
  openCmdFifo();
  await wait(500);

  // Add a few channels so column 0 is usable
  for (let i = 1; i <= 3; i++) {
    writeFifoCommand("add");
    await wait(100);
  }

  // Navigate to row 5, col 0
  tmuxSendKeys("looper", "0", "j");
  tmuxSendKeys("looper", "0", "j");
  tmuxSendKeys("looper", "0", "j");
  tmuxSendKeys("looper", "0", "j");
  tmuxSendKeys("looper", "0", "j");
  await wait(500);

  // Verify selection shows row 5
  let pane = tmuxCapturePane("looper", "0");
  if (!pane.includes("Selected: Grid 0, Row 5, Col 0")) {
    console.log("  FAIL: Could not navigate to Row 5, Col 0");
    engine.kill(); teardownTest();
    throw new Error("Navigation to row 5 failed");
  }
  console.log("  PASS: Navigated to Row 5, Col 0");

  // Press 't' to start recording
  tmuxSendKeys("looper", "0", "t");

  // Check the TUI pane – wait until it shows 'R' near row 5
  const paneWithR = await waitForPaneText("R", 5000);
  const paneLines = paneWithR.split("\n");
  let cell5Line = -1, recordLine = -1;
  for (let i = 0; i < paneLines.length; i++) {
    if (paneLines[i].includes(" 5")) cell5Line = i;
    if (paneLines[i].includes("R"))  recordLine = i;
  }
  if (cell5Line !== -1 && recordLine !== -1 && Math.abs(recordLine - cell5Line) <= 2) {
    console.log("  PASS: TUI grid shows 'R' near row 5");
  } else {
    console.log("  FAIL: TUI grid does not show 'R' near row 5");
    console.log("  Pane:\n" + paneWithR.slice(0, 1000));
    engine.kill(); teardownTest();
    throw new Error("TUI indicator missing for row 5");
  }

  engine.kill();
  teardownTest();
}