import nconf from 'nconf';
import { langCodes } from '../../libs/i18n';
import { serveContent } from '../../libs/content';
import { authWithHeaders } from '../../middlewares/auth';

const IS_PROD = nconf.get('IS_PROD');

const api = {};

const MOBILE_FILTER = ['achievements', 'questSeriesAchievements', 'animalColorAchievements', 'animalSetAchievements',
  'stableAchievements', 'bundles', 'loginIncentives', 'pets', 'premiumPets', 'specialPets', 'questPets',
  'wackyPets', 'mounts', 'premiumMounts,specialMounts,questMounts', 'events', 'dropEggs', 'questEggs', 'dropHatchingPotions',
  'premiumHatchingPotions', 'wackyHatchingPotions', 'backgroundsFlat', 'questsByLevel', 'gear.tree', 'tasksByCategory',
  'userDefaults', 'timeTravelStable', 'gearTypes', 'cardTypes'];

const ANDROID_FILTER = [...MOBILE_FILTER, 'appearances.background'].join(',');
const IOS_FILTER = [...MOBILE_FILTER, 'backgrounds'].join(',');

/**
 * @api {get} /api/v3/content Get all available content objects
 * @apiDescription Does not require authentication.
 * @apiName ContentGet
 * @apiGroup Content
 *
 * @apiParam (Query) {String="bg","cs","da","de",
 *                   "en","en@pirate","en_GB",
 *                    "es","es_419","fr","he","hu",
 *                    "id","it","ja","nl","pl","pt","pt_BR",
 *                    "ro","ru","sk","sr","sv",
 *                    "uk","zh","zh_TW"} [language=en] Language code used for the items'
 *                                                     strings. If the authenticated user makes
 *                                                     the request, the content will return with
 *                                                     the user's configured language.
 *
 * @apiSuccess {Object} data Various data about the content of Habitica. The content route
 * contains many keys, but the data listed below are the recommended data to use.
 * @apiSuccess {Object} data.mystery The mystery sets awarded to paying subscribers.
 * @apiSuccess {Object} data.gear The gear that can be equipped.
 * @apiSuccess {Object} data.gear.tree Detailed information about the gear, organized by type.
 * @apiSuccess {Object} data.gear.flat The full key of each equipment.
 * @apiSuccess {Object} data.spells The skills organized by class. Includes cards and visual buffs.
 * @apiSuccess {Object} data.potion Data about the health potion.
 * @apiSuccess {Object} data.armoire Data about the armoire.
 * @apiSuccess {Array} data.classes The available classes.
 * @apiSuccess {Object} data.eggs All available eggs.
 * @apiSuccess {Object} data.timeTravelStable The animals available
 *                                            in the Time Traveler's stable, separated
 *                                            into pets and mounts.
 * @apiSuccess {Object} data.hatchingPotions All the hatching potions.
 * @apiSuccess {Object} data.petInfo All the pets with extra info.
 * @apiSuccess {Object} data.mountInfo All the mounts with extra info.
 * @apiSuccess {Object} data.food All the food.
 * @apiSuccess {Array} data.userCanOwnQuestCategories The types of quests that a user can own.
 * @apiSuccess {Object} data.quests Data about the quests.
 * @apiSuccess {Object} data.appearances Data about the appearance properties.
 * @apiSuccess {Object} data.appearances.hair Data about available hair options.
 * @apiSuccess {Object} data.appearances.shirt Data about available shirt options.
 * @apiSuccess {Object} data.appearances.size Data about available body size options.
 * @apiSuccess {Object} data.appearances.skin Data about available skin options.
 * @apiSuccess {Object} data.appearances.chair Data about available chair options.
 * @apiSuccess {Object} data.appearances.background Data about available background options.
 * @apiSuccess {Object} data.backgrounds Data about the background sets.
 * @apiSuccess {Object} data.subscriptionBlocks Data about the various subscriptions blocks.
 *
 */
api.getContent = {
  method: 'GET',
  url: '/content',
  noLanguage: true,
  middlewares: [authWithHeaders({ optional: true })],
  async handler (req, res) {
    let language = 'en';
    const proposedLang = req.query.language;

    if (proposedLang && langCodes.includes(proposedLang)) {
      language = proposedLang;
    } else if (res.locals.user
      && res.locals.user.preferences
      && res.locals.user.preferences.language
    ) {
      const userLang = res.locals.user.preferences.language;
      if (langCodes.includes(userLang)) {
        language = userLang;
      }
    }

    let filter = req.query.filter || '';
    // apply defaults for mobile clients
    if (filter === '') {
      if (req.headers['x-client'] === 'habitica-android') {
        filter = ANDROID_FILTER;
      } else if (req.headers['x-client'] === 'habitica-ios') {
        filter = IOS_FILTER;
      }
    }

    serveContent(res, language, filter, IS_PROD);
  },
};

export default api;