/**
 * Integer cents → display format utilities
 * All backend prices now stored as Integer cents (1元 = 100)
 * All backend rates stored as Integer bps (100% = 10000)
 * All backend scores stored as Integer percentile (5.00 = 500)
 */

/**
 * Format cents to yuan string (no symbol)
 * 9900 → '99.00'
 */
export function formatPrice (cents) {
  if (cents === null || cents === undefined) return '0.00'
  return (Number(cents) / 100).toFixed(2)
}

/**
 * Format cents to yuan with ¥ symbol
 * 9900 → '¥99.00'
 */
export function formatPriceWithSymbol (cents) {
  return '¥' + formatPrice(cents)
}

/**
 * Format bps to percentage string
 * 235 → '2.35%'   1000 → '10.00%'
 */
export function formatRate (bps) {
  if (bps === null || bps === undefined) return '0.00%'
  return (Number(bps) / 100).toFixed(2) + '%'
}

/**
 * Format percentile score to decimal display
 * 500 → '5.00'   435 → '4.35'
 */
export function formatScore (percentile) {
  if (percentile === null || percentile === undefined) return '0.00'
  return (Number(percentile) / 100).toFixed(2)
}