"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.scoreApp = exports.keywordScoreWeighting = exports.getAppResults = exports.appToResult = void 0;
var _jsLevenshtein = _interopRequireDefault(require("js-levenshtein"));
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0; you may not use this file except in compliance with the Elastic License
 * 2.0.
 */

/** weighting factor for scoring keywords */
const keywordScoreWeighting = 0.8;
exports.keywordScoreWeighting = keywordScoreWeighting;
const getAppResults = (term, apps) => {
  return apps
  // Unroll all deepLinks, only if there is a search term
  .flatMap(app => {
    var _app$keywords;
    return term.length > 0 ? flattenDeepLinks(app) : app.searchable ? [{
      id: app.id,
      app,
      path: app.appRoute,
      subLinkTitles: [],
      keywords: (_app$keywords = app.keywords) !== null && _app$keywords !== void 0 ? _app$keywords : []
    }] : [];
  }).map(appLink => ({
    appLink,
    score: scoreApp(term, appLink)
  })).filter(({
    score
  }) => score > 0).map(({
    appLink,
    score
  }) => appToResult(appLink, score));
};
exports.getAppResults = getAppResults;
const scoreApp = (term, appLink) => {
  term = term.toLowerCase();
  const title = [appLink.app.title, ...appLink.subLinkTitles].join(' ').toLowerCase();
  const appScoreByTerms = scoreAppByTerms(term, title);
  const keywords = [...appLink.app.keywords.map(keyword => keyword.toLowerCase()), ...appLink.keywords.map(keyword => keyword.toLowerCase())];
  const appScoreByKeywords = scoreAppByKeywords(term, keywords);
  return Math.max(appScoreByTerms, appScoreByKeywords * keywordScoreWeighting);
};
exports.scoreApp = scoreApp;
const scoreAppByTerms = (term, title) => {
  if (title === term) {
    // shortcuts to avoid calculating the distance when there is an exact match somewhere.
    return 100;
  }
  if (title.startsWith(term)) {
    return 90;
  }
  if (title.includes(term)) {
    return 75;
  }
  const length = Math.max(term.length, title.length);
  const distance = (0, _jsLevenshtein.default)(term, title);

  // maximum lev distance is length, we compute the match ratio (lower distance is better)
  const ratio = Math.floor((1 - distance / length) * 100);
  if (ratio >= 60) {
    return ratio;
  }
  return 0;
};
const scoreAppByKeywords = (term, keywords) => {
  const scores = keywords.map(keyword => {
    return scoreAppByTerms(term, keyword);
  });
  return Math.max(...scores);
};
const appToResult = (appLink, score) => {
  var _appLink$euiIconType, _ref, _appLink$category$id, _appLink$category, _appLink$app$category, _ref2, _appLink$category$lab, _appLink$category2, _appLink$app$category2;
  const titleParts =
  // Stack Management app should not include the app title in the concatenated link label
  appLink.app.id === 'management' && appLink.subLinkTitles.length > 0 ? appLink.subLinkTitles : [appLink.app.title, ...appLink.subLinkTitles];
  return {
    id: appLink.id,
    // Concatenate title using slashes
    title: titleParts.join(' / '),
    type: 'application',
    icon: (_appLink$euiIconType = appLink.euiIconType) !== null && _appLink$euiIconType !== void 0 ? _appLink$euiIconType : appLink.app.euiIconType,
    url: appLink.path,
    meta: {
      categoryId: (_ref = (_appLink$category$id = (_appLink$category = appLink.category) === null || _appLink$category === void 0 ? void 0 : _appLink$category.id) !== null && _appLink$category$id !== void 0 ? _appLink$category$id : (_appLink$app$category = appLink.app.category) === null || _appLink$app$category === void 0 ? void 0 : _appLink$app$category.id) !== null && _ref !== void 0 ? _ref : null,
      categoryLabel: (_ref2 = (_appLink$category$lab = (_appLink$category2 = appLink.category) === null || _appLink$category2 === void 0 ? void 0 : _appLink$category2.label) !== null && _appLink$category$lab !== void 0 ? _appLink$category$lab : (_appLink$app$category2 = appLink.app.category) === null || _appLink$app$category2 === void 0 ? void 0 : _appLink$app$category2.label) !== null && _ref2 !== void 0 ? _ref2 : null
    },
    score
  };
};
exports.appToResult = appToResult;
const flattenDeepLinks = (app, deepLink) => {
  var _deepLink$keywords;
  if (!deepLink) {
    var _app$keywords2;
    return [...(app.searchable ? [{
      id: app.id,
      app,
      path: app.appRoute,
      subLinkTitles: [],
      keywords: (_app$keywords2 = app === null || app === void 0 ? void 0 : app.keywords) !== null && _app$keywords2 !== void 0 ? _app$keywords2 : []
    }] : []), ...app.deepLinks.flatMap(appDeepLink => flattenDeepLinks(app, appDeepLink))];
  }
  return [...(deepLink.path && deepLink.searchable ? [{
    ...deepLink,
    id: `${app.id}-${deepLink.id}`,
    app,
    path: `${app.appRoute}${deepLink.path}`,
    subLinkTitles: [deepLink.title],
    keywords: [...((_deepLink$keywords = deepLink.keywords) !== null && _deepLink$keywords !== void 0 ? _deepLink$keywords : [])]
  }] : []), ...deepLink.deepLinks.flatMap(deepDeepLink => flattenDeepLinks(app, deepDeepLink)).map(deepAppLink => ({
    ...deepAppLink,
    // shift current sublink title into array of sub-sublink titles
    subLinkTitles: [deepLink.title, ...deepAppLink.subLinkTitles],
    // combine current sublink keywords into array of sub-link keywords
    keywords: [...deepLink.keywords, ...deepAppLink.keywords]
  }))];
};