Function revertChanges

scripts/sparc2/src/git/gitIntegration.ts:219–318

(
  target: string,
  options: RevertOptions = {},
)

 * @param options Additional options for the revert
 */
export async function revertChanges(
  target: string,
  options: RevertOptions = {},
): Promise<void> {
  // Check if the target is a valid date or commit
  try {
    // Try to parse as a date
    new Date(target);
  } catch (error) {
    // If not a date, check if it's a valid commit
    const revParseCmd = new Deno.Command("git", {
      args: ["rev-parse", "--verify", target],
      stdout: "piped",
      stderr: "piped",
    });

    const revParseOutput = await revParseCmd.output();
    if (!revParseOutput.success) {
      const errorOutput = new TextDecoder().decode(revParseOutput.stderr);
      await logMessage("error", `Invalid target: ${errorOutput}`, { target });
      throw new Error(`Invalid target: ${errorOutput}`);
    }
  }

  // Get commits since the target date
  const logCmd = new Deno.Command("git", {
    args: ["log", "--since", target, "--format=%H"],
    stdout: "piped",
    stderr: "piped",
  });

  const logOutput = await logCmd.output();
  if (!logOutput.success) {
    const errorOutput = new TextDecoder().decode(logOutput.stderr);
    await logMessage("error", `Git log failed: ${errorOutput}`, { target });
    throw new Error(`Git log failed: ${errorOutput}`);
  }

  const logText = new TextDecoder().decode(logOutput.stdout);

  const commits = logText.trim().split("\n").filter(Boolean);

  if (commits.length === 0) {
    await logMessage("info", `No commits found since ${target}`);
    return;
  }

  // Create a new branch if requested
  if (options.newBranch) {
    const branchCmd = new Deno.Command("git", {
      args: ["checkout", "-b", options.newBranch],
      stdout: "piped",
      stderr: "piped",
    });

    const branchOutput = await branchCmd.output();
    if (!branchOutput.success) {
      const errorOutput = new TextDecoder().decode(branchOutput.stderr);