movie-search-cli/lib/search.js

Searches movies from the omdpapi and stores them to a file by ranksing

#!/usr/bin/env node

var async = require('async'),
  request = require('request'),
  fs = require('fs-extra'),
  csv = require('ya-csv'),
  movieTitle;

var argv = require('yargs')
    .usage('-t [Title of Movie] Ex. Titanic or The-Matrix')
    .alias('t', 'Movie Title')
    .boolean('v', 'verbose')
    .default('v', false)
    .argv;

// Makes a request to the OMDBapi to get JSON object about a movie specified
function OMDBapiRequest (callback) {
  request('http://www.omdbapi.com/?t=' + movieTitle + '&y=&plot=short&r=json', function (err, res) {
    if (err) {
      callback(err)
    } else {
      var MovieParsed = JSON.parse(res.body);
      callback(null, MovieParsed)
    }
  })
}; 
// Parse the data and write it to a CSV file
function ParseMovieData (MovieParsed, callback) {
  if(MovieParsed.Response == 'False') {
    // If the movie isn't found. Throw an error
    callback(MovieParsed.Error)
  } else {
    var Title = MovieParsed.Title,
      Year = MovieParsed.Year,
    // Organize it in array format to make it easy to write to a CSV file
      TitleAndYear = [ Title,Year];
      // Using the 'ya-csv' module to write to a file
    var fileWriter = csv.createCsvFileWriter('ListOfMovies.csv', {'flags': 'a'});
      fileWriter.writeRecord(TitleAndYear);
      callback()
  }
};
// Sort the Data based on the year released
function SortMovies (callback) {
  var toBeSorted = [];
    // Read the list of movies csv file
   var filereader = csv.createCsvFileReader('ListOfMovies.csv', { });
      // Sort the movie based on the year released
      filereader.addListener('data', function(data) {
          toBeSorted.push(data)
          toBeSorted.sort(function (array1, array2) {
            return array1[1] - array2[1]
          });
        callback(null, toBeSorted)
      });    
};
// Write the organized (by year released) list to a CSV file 
function writeBacktoCSV (toBeSorted, callback) {
  var fileWriter = csv.createCsvFileWriter('sortedMovies.csv');
  toBeSorted.forEach(function (data) { 
   fileWriter.writeRecord(data);
   callback()
  })
};

/**
This is where the excution starts:
Go to the sortedMovies.csv to see the sorted movies
*/
movieTitle = argv.t

async.waterfall([
  OMDBapiRequest,
  ParseMovieData,
  SortMovies,
  writeBacktoCSV 
  ], function (err, res) {
    // if verbose, it has output after every iteration
    if (argv.v !== false) {
      if (err) {
        console.log(err)
      } else {
        console.log('Done.')
      }
    } 
  }
)