/**
 * Verdict label helpers — convert long verdict strings to short display values
 * and derive CSS colour classes from emoji prefixes.
 */

/**
 * Converts a long verdict label into a short display string.
 * e.g. "🟢 BUY (High Conviction)" → "Strong"
 */
export function verdictShort(label: string | null | undefined): string {
  if (!label) return '—';
  if (label.includes('High Conviction')) return 'Strong';
  if (label.includes('Speculative')) return 'Speculative';
  if (label.includes('BUY')) return 'Buy';
  if (label.includes('Efficient')) return 'Efficient';
  if (label.includes('Attractive')) return 'Attractive';
  if (label.includes('Neutral')) return 'Hold';
  if (label.includes('REJECT')) return 'Reject';
  if (label.includes('Avoid')) return 'Avoid';
  return label.replace(/[🟢🟡🔴]/u, '').trim();
}

/**
 * Returns a CSS colour class ('green' | 'yellow' | 'red') based on
 * the emoji prefix of a verdict label.
 */
export function vClass(label: string | null | undefined): 'green' | 'yellow' | 'red' {
  if (label?.startsWith('🟢')) return 'green';
  if (label?.startsWith('🟡')) return 'yellow';
  return 'red';
}

/**
 * Returns a CSS colour class for a portfolio advice string based on its emoji prefix.
 * 🟢 → 'green', 🟡 → 'yellow', 🟠 → 'orange', 🔴 → 'red', else 'gray'.
 */
export function advClass(
  advice: string | null | undefined,
): 'green' | 'yellow' | 'orange' | 'red' | 'gray' {
  if (advice?.includes('🟢')) return 'green';
  if (advice?.includes('🟡')) return 'yellow';
  if (advice?.includes('🟠')) return 'orange';
  if (advice?.includes('🔴')) return 'red';
  return 'gray';
}

/**
 * Returns 'green' for non-negative G/L percentage, 'red' otherwise.
 * Accepts string (e.g. "12.5") or number.
 */
export function glClass(pct: string | number | null | undefined): 'green' | 'red' {
  return parseFloat(String(pct ?? 0)) >= 0 ? 'green' : 'red';
}