module.exports = imageReference
imageReference.peek = imageReferencePeek

var association = require('../util/association')
var safe = require('../util/safe')

function imageReference(node, _, context) {
  var type = node.referenceType
  var exit = context.enter('imageReference')
  var subexit = context.enter('label')
  var alt = safe(context, node.alt, {before: '[', after: ']'})
  var value = '![' + alt + ']'
  var reference
  var stack

  subexit()
  // Hide the fact that we’re in phrasing, because escapes don’t work.
  stack = context.stack
  context.stack = []
  subexit = context.enter('reference')
  reference = safe(context, association(node), {before: '[', after: ']'})
  subexit()
  context.stack = stack
  exit()

  if (type === 'full' || !alt || alt !== reference) {
    value += '[' + reference + ']'
  } else if (type !== 'shortcut') {
    value += '[]'
  }

  return value
}

function imageReferencePeek() {
  return '!'
}