// A draft is what the user has entered but not yet saved.
// It is kept in this browser only, so a recoverable close or navigation never loses it.
export function createDraft() {
  return {
    bristolType: 4,
    typeChosen: false,
    color: 'brown',
    urgency: 0,
    discomfort: 0,
    note: '',
    symptoms: {},
    photoDataUrl: '',
  };
}

export function isDraftDirty(draft = {}) {
  return Boolean(
    draft.typeChosen
    || draft.photoDataUrl
    || String(draft.note || '').trim()
    || Number(draft.urgency) > 0
    || Number(draft.discomfort) > 0
    || (draft.color && draft.color !== 'brown')
    || Object.values(draft.symptoms || {}).some(Boolean),
  );
}

export function draftNotice(draft = {}) {
  if (!isDraftDirty(draft)) return '';
  const parts = [];
  if (draft.typeChosen) parts.push(`Type ${draft.bristolType}`);
  if (draft.color && draft.color !== 'brown') parts.push(`${draft.color} color`);
  if (Number(draft.urgency) > 0) parts.push('urgency');
  if (Number(draft.discomfort) > 0) parts.push('discomfort');
  if (String(draft.note || '').trim()) parts.push('note');
  if (Object.values(draft.symptoms || {}).some(Boolean)) parts.push('symptoms');
  if (draft.photoDataUrl) parts.push('photo');
  return parts.join(' · ');
}