142 lines
4.7 KiB
JavaScript
142 lines
4.7 KiB
JavaScript
/* ----------------------------------------------------------
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* noaarpts.js
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* Last modified: 2021/07/10 13:19:42
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* Populates the dropdown menus using the records began date
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*
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* Requires jQuery
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* ----------------------------------------------------------*/
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let rptPath = 'data/reports/'; // Your path should have a trailing "/", eg. 'Reports/'
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let startYear, endYear;
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let startMonth, endMonth;
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let rptAvail = {};
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if (rptPath.length && rptPath.slice(-1) !== '/')
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rptPath += '/';
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$(document).ready(function () {
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dataLoadedPromise.then(function () {
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startYear = cmx_data.recordsbegandateISO.split('-')[0] * 1;
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startMonth = cmx_data.recordsbegandateISO.split('-')[1] * 1;
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endYear = cmx_data.metdateyesterdayISO.split('-')[0] * 1;
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endMonth = cmx_data.metdateyesterdayISO.split('-')[1] * 1;
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// This does the initial disable of out of range months this year
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rptAvail[endYear] = [];
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for (let m = 1; m < 13; m++) {
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// greater than end month
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rptAvail[endYear][m] = m <= endMonth;
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// if start year is this year, then less start month
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if (startYear == endYear) {
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rptAvail[endYear][m] = rptAvail[endYear][m] && m >= startMonth
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}
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$('#opt-' + m).prop('hidden', !rptAvail[endYear][m]);
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}
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// get the current year report and display it whilst we sort out the rest in background
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getYearRpt(endYear);
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// add the year select dropdown values, most recent first
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for (let y = endYear; y >= startYear; y--) {
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let option = $('<option />');
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option.html(y);
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option.val(y);
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$('#year').append(option);
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rptAvail[y] = [];
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// The start and end years may be short, so no point in checking months that are out of range
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let monSt, monEnd;
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if (y == startYear || y == endYear) {
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monSt = y == startYear ? startMonth : 1;
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monEnd = y == endYear ? endMonth : 12;
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} else {
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monSt = 1;
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monEnd = 12;
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}
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// we need to process every month though, so we can disbale those out of range as well as MIA
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for (let m = 1; m <= 12; m++) {
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// assume this month isn't available
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rptAvail[y][m] = false;
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if (m >= monSt && m <= monEnd) {
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// assume it's there, then we only have to check for failure
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rptAvail[y][m] = true;
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// checking...
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$.ajax({
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url: rptPath + 'NOAAMO' + pad2(m) + pad2(y - 2000) + '.txt',
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type: 'HEAD',
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error: function () {
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rptAvail[y][m] = false;
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// if we are in the year currently being displayed...
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if (y == $('#year').val()) {
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// ...disable of any months that should be available but aren't
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$('#opt-' + m).prop('hidden', true);
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}
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}
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});
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}
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}
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}
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});
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});
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// pad two digit numbers with a leading zero
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let pad2 = function (num) {
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return (num < 10 ? '0' : '') + num;
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}
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// Script assumes that reports use the default name format
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let getMonRpt = function (month) {
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let yr = $('#year').val();
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// Is annual selected? If so, show the yearly report
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if (month === '0') {
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getYearRpt(yr);
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return;
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}
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reqRpt = rptPath + 'NOAAMO' + pad2(month) + pad2(yr - 2000) + '.txt';
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$.ajax({
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url: reqRpt,
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dataType: 'text',
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success: function (data) {
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$('#noaareport').text(data);
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},
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error: function () {
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alert('Did not find the required report\n\nPlease try another date');
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}
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});
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};
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// Script assumes that reports use the default name format
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let getYearRpt = function (yr) {
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let reqRpt = rptPath + 'NOAAYR' + yr + '.txt';
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// set the month buttons for the new year
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for (let m = 1; m < 13; m++) {
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$('#opt-' + m).prop('hidden', !rptAvail[yr][m]);
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}
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// Do we have a month selected? If so show the month report for the new year
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let mon = $('#month').val();
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if (mon != '0') {
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getMonRpt(mon);
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return;
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}
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// get the report text
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$.ajax({
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url: reqRpt,
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dataType: 'text',
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success: function (data) {
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$('#noaareport').text(data);
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},
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error: function () {
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alert('Did not find the required report\n\nPlease try another date');
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}
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});
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};
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