'use strict'

var downloader = require('./downloader.js');
var dir = 'data/meteorological/'
var Promise = require('es6-promise').Promise;

module.exports = {
    months: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],

    /**
     *
     */
    getYear: function(buoy, yyyy) {
        var filename = buoy + 'h' + yyyy + '.txt';

        var url = 'http://www.ndbc.noaa.gov/view_text_file.php?'+
            'filename=' + filename + '.gz&dir=data/historical/stdmet/';

        return downloader.download(url, dir + filename);
    },

    /**
     *
     */
    getMonth: function(buoy, m, yyyy) {
        var month = m + 1;
        month = (month == 10 ? 'a' : month);
        month = (month == 11 ? 'b' : month);
        month = (month == 12 ? 'c' : month);

        var filename = buoy + month.toString() + yyyy + '.txt';

        var url = 'http://www.ndbc.noaa.gov/view_text_file.php?' +
            'filename=' + filename + '.gz&dir=data/stdmet/' + this.months[m] + '/';

        var path = dir + buoy + '/';
        downloader.mkdir(path);
        return downloader.download(url, path + filename);
    },

    /**
     *
     */
    getCurrent: function(buoy) {
        var filename = buoy + '.txt';

        var url = 'http://www.ndbc.noaa.gov/data/realtime2/' + filename;

        return downloader.download(url, dir + filename);
    },

    /**
     *
     */
    getInconsistent: function(buoy, m) {
        var url = 'http://www.ndbc.noaa.gov/data/stdmet/' + this.months[m] + '/' + buoy + '.txt';

        var month = m + 1;
        month = (month == 10 ? 'a' : month);
        month = (month == 11 ? 'b' : month);
        month = (month == 12 ? 'c' : month);

        var path = dir + buoy + '/';
        downloader.mkdir(path);

        return downloader.download(url, path + buoy.toString() + month + '2015-newest.txt');
    }
};