// Helpers for the "one key=value per line" textareas used by the connection
// dialog (URL params) and the pipeline form (replication env).

// Parse textarea lines into an object. Blank lines, lines starting with '#'
// and lines without a key or '=' are ignored. Values may contain '='.
export function parseKeyValueLines(text: string): Record<string, string> {
  const out: Record<string, string> = {};
  for (const raw of text.split("\n")) {
    const line = raw.trim();
    if (!line || line.startsWith("#")) continue;
    const i = line.indexOf("=");
    if (i <= 0) continue;
    const key = line.slice(0, i).trim();
    const value = line.slice(i + 1).trim();
    if (key) out[key] = value;
  }
  return out;
}

// Serialize a JSON-object column back into key=value lines for editing.
export function keyValueLinesFromJson(json: string | undefined | null): string {
  if (!json) return "";
  try {
    const v = JSON.parse(json) as unknown;
    if (v && typeof v === "object" && !Array.isArray(v)) {
      return Object.entries(v as Record<string, unknown>)
        .map(([k, val]) => `${k}=${String(val)}`)
        .join("\n");
    }
  } catch {
    // fall through
  }
  return "";
}