import get from 'lodash.get'
import { prebuildNavigation as pbn } from 'site/prebuild/navigation.mjs'
import { useTranslation } from 'next-i18next'
import orderBy from 'lodash.orderby'
import { freeSewingConfig as conf } from 'site/freesewing.config.mjs'

/*
 * prebuildNavvigation[locale] holds the naigation structure based on MDX content.
 * The entire website only has a few pages that are now MDX-based:
 * - 404 => no navigation shown
 * - home page => no navvigation shown
 * - /contact => Added below
 *
 * Note: Set 'h' to truthy to not show a top-level entry as a section
 * Note: Set 'c' to set the control level to hide things from users
 */

const ns = ['account']

const sitePages = (locale, t = false) => {
  // Handle t not being present
  if (!t) t = (string) => string
  const pages = {
    profile: {
      t: t('yourProfile'),
      s: 'profile',
      h: 1,
    },
    typography: {
      t: 'Typography', // Not translated, this is a developer page
      s: 'typography',
      h: 1,
    },
    account: {
      t: t('account'),
      s: 'account',
    },
  }
  for (const section in conf.account.fields) {
    for (const field in conf.account.fields[section]) {
      pages.account[field] = {
        t: t(`account:${field}`),
        s: `account/${field}`,
      }
    }
  }

  return pages
}

const createCrumbs = (path, nav) =>
  path.map((crumb, i) => {
    const entry = get(nav, path.slice(0, i + 1))
    const val = { t: entry.t, s: entry.s }
    if (entry.o) val.o = entry.o

    return val
  })

const createSections = (nav) => {
  const sections = {}
  for (const slug of Object.keys(nav)) {
    const entry = nav[slug]
    const val = { t: entry.t, s: entry.s }
    if (entry.o) val.o = entry.o
    if (!entry.h) sections[slug] = val
  }

  return orderBy(sections, ['o', 't'])
}

export const useNavigation = (path = [], locale = 'en') => {
  const { t } = useTranslation(ns)

  const nav = { ...pbn[locale], ...sitePages(locale, t) }

  // Creat crumbs array
  const crumbs = createCrumbs(path, nav)
  const sections = createSections(nav)
  const pages = sitePages(locale)

  return {
    path,
    slug: path.join('/'),
    crumbs,
    sections,
    nav: path.length > 1 ? get(nav, path[0]) : path.length === 0 ? sections : nav[path[0]],
    title: crumbs.length > 0 ? crumbs.slice(-1)[0].t : '',
  }
}