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data = require(\"./data/data.json\");\n\nconst randomNum = () => {\n  return Math.floor(Math.random() * data.length);\n};\n\n/**\n * Returns the name of a random country from the list of\n * countries in the dataset\n * @returns {string} The name of a country picked at random\n */\nconst getRandomCountry = () => {\n  let randNum = randomNum();\n  return data[randNum].country;\n};\n\n/**\n * Returns an array having `count` number of different random country objects,\n * each object containing `country`, `capital`, `currency`, `native_language`,\n * `famous_for`, and `phone_code`.\n * @param {integer} count Number of country objects in the array to be returned\n * @returns {Array} An array having `count` number of country objects\n */\nconst getNRandomCountriesData = (count) => {\n  let randomCountriesSet = new Set(); // to prevent duplicate countries\n  while (randomCountriesSet.size < count) {\n    let country = data[randomNum()];\n    randomCountriesSet.add(country); // adds a country to the Array\n  }\n  return Array.from(randomCountriesSet); // Returns the Array\n};\n\n// Helper function\nconst getCountriesByObject = (value, obj) => {\n  let resultArray = [];\n  value = value.toLowerCase();\n  object = obj;\n  data.forEach((item) => {\n    item[object] = item[object];\n    if (item[object] && item[object].includes(value)) {\n      resultArray.push(item);\n    }\n  });\n\n  return resultArray;\n};\n\n/**\n * Returns an array of objects, each containing `country`, `capital`,\n * `currency` and `native_language` filtered by `capital` .\n * @param {string} capital The name (not case-sensitive) of the capital of the country\n * @returns {Array} An array of country objects\n */\nconst getCountryDetailsByCapital = (capital) => {\n  return getCountriesByObject(capital, \"capital\");\n};\n\n/**\n * Returns an array of objects, each containing `country`, `capital`,\n * `currency` and `native_language` filtered by `country` .\n * @param {string} country The name (not case-sensitive) of the country\n * @returns {Array} An array of country objects\n */\nconst getCountryDetailsByName = (country) => {\n  return getCountriesByObject(country, \"country\");\n};\n\n/**\n * Returns an array of objects, each containing `country`, `capital`,\n * `currency` and `native_language` filtered by the `languageSpoken` .\n * @param {string} languageSpoken The language spoken (not case-sensitive) by the country\n * @returns {Array} An array of country objects\n */\nconst getCountriesByLanguage = (languageSpoken) => {\n  return getCountriesByObject(languageSpoken, \"native_language\");\n};\n\n/**\n * Returns an array of objects, each containing `country`, `capital`,\n * `currency` and `native_language` filtered by the `languageSpoken` .\n * @param {'left' | 'right'} direction The driving direction followed by the country\n * @returns {Array} An array of country objects\n */\nconst getCountriesByDriveDirection = (direction) => {\n  let value;\n  switch (direction) {\n    case \"left\":\n      value = \"left\";\n      break;\n    case \"right\":\n      value = \"right\";\n      break;\n    default:\n      throw new Error('direction must be \"left\" or \"right\"');\n  }\n  return getCountriesByObject(value, \"drive_direction\");\n};\n\n/**\n * Returns an array of objects containing all countries, each containing `country`, `capital`,\n * `currency`, `native_language`, `famous_for`, and `phone_code`\n * @returns {Array} An array of country objects\n */\nconst getAllCountryDetails = () => {\n  return data;\n};\n\n/**\n * Returns an array containing the name of all the countries in the dataset\n * @returns {Array} An array of country objects\n */\nconst getAllCountries = () => {\n  return data.map(({ country }) => country);\n};\n\n/**\n * Returns an array of objects containing all countries, each containing `country`, `capital`,\n * `currency`, `native_language`, `famous_for`, and `phone_code`, filtered by `famousThing`\n * @param {string} famousThing What the country is famous for\n * @returns {Array} An array of country objects\n */\nconst getCountriesByFamousFor = (famousThing) => {\n  return data.filter(\n    (country) => country.famous_for.search(\"\\\\b\" + famousThing + \"\\\\b\") != -1\n  );\n};\n\nconst getCountriesByAlcoholProhibition = (prohibitionType) =>{\n  let value;\n  switch (prohibitionType) {\n    case \"none\":\n      value = \"none\";\n      break;\n    case \"limited\":\n      value = \"limited\";\n      break;\n    case \"regional\":\n      value = \"regional\";\n      break;\n    case \"nationwide\":\n      value = \"nationwide\";\n      break;\n    default:\n      throw new Error('Prohibition type must be \"none\", \"limited\", \"regional\" or \"nationwide\"');\n  }\n  return getCountriesByObject(value,\"alcohol_prohibition\");\n}\n\n/**\n * Returns an array of objects, each containing `country`, `capital`, `currency`, `native_language`,\n * `famous_for`, `phone_code`, `flag`, `drive_direction`, `continent`, `iso` and `tld`\n * filtered by `continentCode`\n * @param {string} continentCode The continent 2-letter code (not case-sensitive)\n * @returns {Array} An array of country objects\n */\nconst getCountriesByContinent = (continentCode) => {\n  continentCode = continentCode.toLowerCase();\n\n  return data.filter(country => country.continent\n    .split(\"/\")\n    .includes(continentCode)\n  );\n};\n\n/**\n * Returns an array with object containing `country`, `capital`, `currency`, `native_language`,\n * `famous_for`, `phone_code`, `flag`, `drive_direction`, `continent`, `iso` and `tld`\n * filtered by specific `iso`\n * @param {'numeric' | 'alpha_2' | 'alpha_3'} isoType The code of the country (ISO 3166-1 standard)\n * @param {string} isoValue The ISO code value (not case-sensitive) of the country\n * @returns {Array} An array with country object\n */\nconst getCountryDetailsByISO = (isoType, isoValue) => {\n  let type;\n\n  isoType = isoType.toLowerCase();\n  isoValue = isoValue.toLowerCase();\n\n  switch (isoType) {\n    case \"numeric\":\n      type = \"numeric\";\n      break;\n    case \"alpha_2\":\n      type = \"alpha_2\";\n      break;\n    case \"alpha_3\":\n      type = \"alpha_3\";\n      break;\n    default:\n      throw new Error(\"isoType must be 'numeric', 'alpha_2' or 'alpha_3'\");\n  }\n\n  return data.filter(country => country.iso[type] === isoValue);\n};\n\n/**\n * Returns an array of objects containing `country`, `capital`, `currency`, `native_language`,\n * `famous_for`, `phone_code`, `flag`, `drive_direction`, `continent`, `iso` and `tld`\n * filtered by `tld`\n * @param {string} tldName The name (not case-sensitive) of the country code top-level domain\n * @returns {Array} An array of country objects\n */\nconst getCountriesByTLD = (tldName) => {\n  tldName = tldName.toLowerCase();\n\n  return data.filter(country => country.tld\n    .split(\"/\")\n    .includes(tldName)\n  );\n};\n\n/**\n * Returns an array of objects containing all countries, each containing `country`, `capital`,\n * `currency`, `native_language`, `famous_for`, and `phone_code`, `flag`, `drive_direction`\n * and `constitutional_form` filtered by `constitutional_form`\n * @param {string} constitutionalFormName Name of country constitutional form\n * @returns {Array} An array of country objects\n */\nconst getCountriesByConstitutionalForm = (constitutionalFormName) => {\n  const result = data.filter((country) => {\n    return country.constitutional_form.includes(constitutionalFormName)\n  });\n\n  if (!result.length) {\n    throw new Error(\n      `No country was found! Available constitutional forms are:\n      'republic', 'constitutional monarchy', 'absolute monarchy' and 'n/a'\n    `);\n  }\n\n  return result;\n}\n\n/** \n * Returns an array of objects containing all countries, each containing `country`, `capital`,\n * `currency`, `native_language`, `famous_for`, `phone_code`, `flag` and `drive_direction` filtered by `is_landlocked`\n * @param { Boolean } isLandLocked  Country that is surrounded by one or more countries\n * @returns {Array} An array of country objects\n*/\nconst getCountriesByLandLock = (isLandLocked) => {\n  return data.filter( country => country.is_landlocked === isLandLocked);\n};\n\nmodule.exports = {\n  getRandomCountry,\n  getNRandomCountriesData,\n  getCountryDetailsByCapital,\n  getCountryDetailsByName,\n  getAllCountryDetails,\n  getAllCountries,\n  getCountriesByLanguage,\n  getCountriesByFamousFor,\n  getCountriesByDriveDirection,\n  getCountriesByAlcoholProhibition,\n  getCountriesByContinent,\n  getCountryDetailsByISO,\n  getCountriesByTLD,\n  getCountriesByConstitutionalForm,\n  getCountriesByLandLock,\n};\n"],"names":["data","randomNum","Math","floor","random","length","getCountriesByObject","value","obj","resultArray","toLowerCase","object","forEach","item","includes","push","module","exports","getRandomCountry","randNum","country","getNRandomCountriesData","count","randomCountriesSet","Set","size","add","Array","from","getCountryDetailsByCapital","capital","getCountryDetailsByName","getAllCountryDetails","getAllCountries","map","getCountriesByLanguage","languageSpoken","getCountriesByFamousFor","famousThing","filter","famous_for","search","getCountriesByDriveDirection","direction","Error","getCountriesByAlcoholProhibition","prohibitionType","getCountriesByContinent","continentCode","continent","split","getCountryDetailsByISO","isoType","isoValue","type","iso","getCountriesByTLD","tldName","tld","getCountriesByConstitutionalForm","constitutionalFormName","result","constitutional_form","getCountriesByLandLock","isLandLocked","is_landlocked"],"sourceRoot":""}