import { request } from '../lib/apiClient'
import { toDate } from '../lib/format'

/** In-app notifications — backend/notifications/app.py. Scoped to the caller; no RBAC tag. */

const KIND_META = {
  application: { icon: 'user-plus', color: 'i-green' },
  interview: { icon: 'calendar', color: 'i-blue' },
  offer: { icon: 'check', color: 'i-teal' },
  assessment: { icon: 'star', color: 'i-amber' },
  approval: { icon: 'file', color: 'i-indigo' },
  message: { icon: 'message', color: 'i-purple' },
  system: { icon: 'info', color: 'i-gray' },
}

export function list({ unreadOnly, top, skip } = {}) {
  return request('/notifications/fetch', {
    params: { unread_only: unreadOnly, top, skip },
  })
}

export function markRead(recordId) {
  return request(`/notifications/${recordId}/read`, { method: 'POST' })
}

export function markAllRead() {
  return request('/notifications/read-all', { method: 'POST' })
}

export function remove(recordId) {
  return request('/notifications/delete', {
    method: 'DELETE',
    params: { record_id: recordId },
  })
}

function relTime(iso) {
  if (!iso) return ''
  const then = toDate(iso)
  if (!then) return ''
  const mins = Math.max(0, Math.round((Date.now() - then.getTime()) / 60000))
  if (mins < 60) return `${mins}m ago`
  if (mins < 1440) return `${Math.floor(mins / 60)}h ago`
  return `${Math.floor(mins / 1440)}d ago`
}

export function toNotificationView(row) {
  const meta = KIND_META[row.kind] || KIND_META.system
  return {
    id: row.id,
    kind: row.kind,
    title: row.title,
    text: row.body || '',
    linkPath: row.link_path || null,
    inboxId: row.inbox_id,
    jobPostId: row.job_post_id,
    unread: !row.is_read,
    time: relTime(row.created_at),
    createdAt: row.created_at,
    icon: meta.icon,
    color: meta.color,
  }
}