/**
 * Quote-back formatter (DRAFT-001 v0.3.0 B2).
 *
 * Produces the markdown block that the cockpit pushes into the chat
 * editor when the user commits a line-selection. The first line is a
 * machine-readable reference; the rest is the quoted content. A
 * trailing blank line + cursor lands the user ready to type their
 * question.
 *
 * Format (line-granular; column precision is a v0.x non-goal):
 *
 *   > sdd:<relPath>#L<start>-L<end>
 *   > <line1>
 *   > <line2>
 *   …
 *
 *   <cursor>
 */

export function formatQuote(
  relPath: string,
  startLine1Based: number,
  endLine1Based: number,
  selectedLines: string[],
): string {
  const ref = `> sdd:${relPath}#L${startLine1Based}-L${endLine1Based}`;
  const body = selectedLines.map((l) => (l.length === 0 ? ">" : `> ${l}`)).join("\n");
  // Trailing blank line so the editor cursor sits one line below the quote.
  return `${ref}\n${body}\n\n`;
}