export interface EvidenceRow {
  criterion: string;
  artifact: string;
  notes?: string;
}

/** Render an evidence index markdown table. */
export function formatEvidenceIndex(rows: EvidenceRow[]): string {
  const lines: string[] = [
    "| Criterion | Artifact | Notes |",
    "|-----------|----------|-------|",
  ];
  for (const r of rows) {
    const notes = (r.notes ?? "").replace(/\|/g, "\\|");
    const criterion = r.criterion.replace(/\|/g, "\\|");
    const artifact = r.artifact.replace(/\|/g, "\\|");
    lines.push(`| ${criterion} | ${artifact} | ${notes} |`);
  }
  lines.push("");
  return lines.join("\n");
}

/** Parse an evidence index markdown table into rows (best-effort). */
export function parseEvidenceIndex(md: string): EvidenceRow[] {
  const rows: EvidenceRow[] = [];
  for (const line of md.split("\n")) {
    const trimmed = line.trim();
    if (!trimmed.startsWith("|")) continue;
    if (/^\|\s*-+/.test(trimmed)) continue;
    const parts = trimmed
      .replace(/^\|/, "")
      .replace(/\|$/, "")
      .split("|")
      .map((c) => c.trim());
    if (parts.length < 2) continue;
    const head = parts[0]!.toLowerCase();
    if (head === "criterion" || head.startsWith("---")) continue;
    const row: EvidenceRow = {
      criterion: parts[0]!,
      artifact: parts[1]!,
    };
    if (parts[2]) row.notes = parts[2];
    rows.push(row);
  }
  return rows;
}