versionwarning.js

(function() {
    // adapted 2022-11 from https://mne.tools/versionwarning.js
    if (location.hostname == '') {
        var latestStable = '10.0.0';
        // HTML tags
        var pre = '<div class="container-fluid alert-danger devbar"><div class="row no-gutters"><div class="col-12 text-center">';
        var post = '</div></div></div>';
        var anchor = 'class="btn btn-danger font-weight-bold ml-3 my-3 align-baseline"';
        // Switch button message
        var switch_dev = `Switch to unstable development release version`;
        var switch_stable = `latest stable release (version ${latestStable})`;
        // Path of the page
        var location_array = location.pathname.split('/');
        var versionPath = location_array[6];
        var subPath = location_array[7];
        var filePath = location_array.slice(7).join('/');
        // Links to stable or dev versions
        var uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
        var uri_stable = `https://arrow.apache.org/docs/${filePath}`;

        if (versionPath == 'developers') {
            // developers section in the stable version
            filePath = location_array.slice(6).join('/');
            uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
            $.ajax({
                type: 'HEAD',
                url: `${uri_dev}`,
                error: function() {
                    filePath = '';
                    uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
                },
                complete: function() {
                    var showWarning = `${pre}This is documentation for the stable version ` +
                                      `of Apache Arrow (version ${latestStable}). For latest development practices: ` +
                                      `<a ${anchor} href=${uri_dev}>${switch_dev}</a>${post}`
                    $('.container-fluid').prepend(`${showWarning}`)
                }
            });
        } else if (versionPath.match(/^\d/) < "4") {
            // old versions 1.0,. 2.0 or 3.0
            $.ajax({
                type: 'HEAD',
                url: `${uri_stable}`,
                error: function() {
                    filePath = '';
                    uri_stable = `https://arrow.apache.org/docs/${filePath}`;
                },
                complete: function() {
                    $.ajax({
                        type: 'HEAD',
                        url: `${uri_dev}`,
                        error: function() {
                            filePath = '';
                            uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
                        },
                        complete: function() {
                            pre = '<p style="padding: 1em;font-size: 1em;border: 1px solid red;background: pink;">';
                            post = '</p>';
                            anchor = 'class="btn btn-danger" style="font-weight: bold; vertical-align: baseline;' +
                                     'margin: 0.5rem; border-style: solid; border-color: white;"';
                            var showWarning = `${pre}This is documentation for an old release of ` +
                                            `Apache Arrow (version ${versionPath}). Try the` +
                                            `<a ${anchor} href=${uri_stable}>${switch_stable}</a> or` +
                                            `<a ${anchor} href=${uri_dev}>development (unstable) version. </a>${post}`
                            $('.document').prepend(`${showWarning}`)
                        }
                    });
                }
            });
        } else if (versionPath.match(/^\d/) && subPath == 'developers') {
            // older versions of developers section (with numbered version in the URL)
            $.ajax({
                type: 'HEAD',
                url: `${uri_dev}`,
                error: function() {
                    filePath = '';
                    uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
                },
                complete: function() {
                    var showWarning = `${pre}This is documentation for an old release of Apache Arrow ` +
                                      `(version ${versionPath}). For latest development practices: ` +
                                      `<a ${anchor} href=${uri_dev}>${switch_dev} </a>${post}`
                    $('.container-fluid').prepend(`${showWarning}`)
                }
            });
        } else if (versionPath.match(/^\d/)) {
            // older versions (with numbered version in the URL)
            $.ajax({
                type: 'HEAD',
                url: `${uri_stable}`,
                error: function() {
                    filePath = '';
                    uri_stable = `https://arrow.apache.org/docs/${filePath}`;
                },
                complete: function() {
                    $.ajax({
                        type: 'HEAD',
                        url: `${uri_dev}`,
                        error: function() {
                            filePath = '';
                            uri_dev = `https://arrow.apache.org/docs/dev/${filePath}`;
                        },
                        complete: function() {
                            var showWarning = `${pre}This is documentation for an old release of ` +
                                              `Apache Arrow (version ${versionPath}). Try the` +
                                              `<a ${anchor} href=${uri_stable}>${switch_stable}</a> or` +
                                              `<a ${anchor} href=${uri_dev}>development (unstable) version. </a>${post}`
                            $('.container-fluid').prepend(`${showWarning}`)
                        }
                    });
                }
            });
        }
    }
})()