/* archweb.js
 * Homepage: https://projects.archlinux.org/archweb.git/
 * Copyright: 2007-2013 The Archweb Team
 * License: GPLv2
 *
 * This file is part of Archweb.
 *
 * Archweb is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Archweb is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Archweb.  If not, see <http://www.gnu.org/licenses/>.
 */

/*'use strict';*/
/* tablesorter custom parsers for various pages:
 * devel/index.html, mirrors/status.html, todolists/view.html */
if (typeof $ !== 'undefined' && typeof $.tablesorter !== 'undefined') {
    $.tablesorter.addParser({
        id: 'pkgcount',
        is: function(s) { return false; },
        format: function(s) {
            var m = s.match(/\d+/);
            return m ? parseInt(m[0], 10) : 0;
        },
        type: 'numeric'
    });

    $.tablesorter.addParser({
        id: 'todostatus',
        is: function(s) { return false; },
        format: function(s) {
            if (s.match(/incomplete/i)) {
                return 1;
            } else if (s.match(/in-progress/i)) {
                return 0.5;
            }
            return 0;
        },
        type: 'numeric'
    });

    $.tablesorter.addParser({
        /* sorts numeric, but put '', 'unknown', and '∞' last. */
        id: 'mostlydigit',
        special: ['', 'unknown', '∞'],
        is: function(s, table) {
            var c = table.config;
            return ($.inArray(s, this.special) > -1) || $.tablesorter.isDigit(s, c);
        },
        format: function(s, t) {
            if ($.inArray(s, this.special) > -1) {
                return Number.MAX_VALUE;
            }
            return $.tablesorter.formatFloat(s, t);
        },
        type: 'numeric'
    });

    $.tablesorter.addParser({
        /* sorts duration; put '', 'unknown', and '∞' last. */
        id: 'duration',
        re: /^([0-9]+):([0-5][0-9])$/,
        special: ['', 'unknown', '∞'],
        is: function(s) {
            return ($.inArray(s, this.special) > -1) || this.re.test(s);
        },
        format: function(s) {
            if ($.inArray(s, this.special) > -1) {
                return Number.MAX_VALUE;
            }
            var matches = this.re.exec(s);
            if (!matches) {
                return Number.MAX_VALUE;
            }
            return matches[1] * 60 + matches[2];
        },
        type: 'numeric'
    });
    $.tablesorter.addParser({
        id: 'epochdate',
        is: function(s) { return false; },
        format: function(s, t, c) {
            /* TODO: this assumes our magic class is the only one */
            var epoch = $(c).attr('class');
            if (epoch.indexOf('epoch-') !== 0) {
                return 0;
            }
            return epoch.slice(6);
        },
        type: 'numeric'
    });

    $.tablesorter.addParser({
        id: 'longDateTime',
        re: /^(\d{4})-(\d{2})-(\d{2}) ([012]\d):([0-5]\d)(:([0-5]\d))?( (\w+))?$/,
        is: function(s) {
            return this.re.test(s);
        },
        format: function(s, t) {
            var matches = this.re.exec(s);
            if (!matches) {
                return 0;
            }
            /* skip group 6, group 7 is optional seconds */
            if (matches[7] === undefined) {
                matches[7] = 0;
            }
            /* The awesomeness of the JS date constructor. Month needs to be
             * between 0-11, because things have to be difficult. */
            var date = new Date(matches[1], matches[2] - 1, matches[3],
                matches[4], matches[5], matches[7]);
            return $.tablesorter.formatFloat(date.getTime(), t);
        },
        type: 'numeric'
    });

    $.tablesorter.addParser({
        id: 'filesize',
        re: /^(\d+(?:\.\d+)?)[ \u00a0](bytes?|[KMGTPEZY]i?B)$/,
        is: function(s) {
            return this.re.test(s);
        },
        format: function(s) {
            var matches = this.re.exec(s);
            if (!matches) {
                return 0;
            }
            var size = parseFloat(matches[1]),
                suffix = matches[2];

            switch(suffix) {
                /* intentional fall-through at each level */
                case 'YB':
                case 'YiB':
                    size *= 1024;
                case 'ZB':
                case 'ZiB':
                    size *= 1024;
                case 'EB':
                case 'EiB':
                    size *= 1024;
                case 'PB':
                case 'PiB':
                    size *= 1024;
                case 'TB':
                case 'TiB':
                    size *= 1024;
                case 'GB':
                case 'GiB':
                    size *= 1024;
                case 'MB':
                case 'MiB':
                    size *= 1024;
                case 'KB':
                case 'KiB':
                    size *= 1024;
            }
            return size;
        },
        type: 'numeric'
    });

    $.tablesorter.removeParser = function(id) {
        $.tablesorter.parsers = $.grep($.tablesorter.parsers,
                function(ele, i) {
                    return ele.id !== id;
                });
    };

    // We don't use currency, and the parser is over-zealous at deciding it
    // matches. Kill it from the parser selection.
    $.tablesorter.removeParser('currency');
}

(function($) {
  $.fn.enableCheckboxRangeSelection = function() {
    var lastCheckbox = null,
        spec = this;

    spec.unbind("click.checkboxrange");
    spec.bind("click.checkboxrange", function(e) {
      if (lastCheckbox !== null && e.shiftKey) {
        spec.slice(
          Math.min(spec.index(lastCheckbox), spec.index(e.target)),
          Math.max(spec.index(lastCheckbox), spec.index(e.target)) + 1
        ).attr({checked: e.target.checked ? "checked" : ""});
      }
      lastCheckbox = e.target;
    });

  };
})(jQuery);

/* news/add.html */
function enablePreview() {
    $('#news-preview-button').click(function(event) {
        event.preventDefault();
        $.post('/news/preview/', {
                data: $('#id_content').val(),
                csrfmiddlewaretoken: $('#newsform input[name=csrfmiddlewaretoken]').val()
            },
            function(data) {
                $('#news-preview-data').html(data);
                $('#news-preview').show();
            }
        );
        $('#news-preview-title').html($('#id_title').val());
    });
}

/* packages/details.html */
function ajaxifyFiles() {
    $('#filelink').click(function(event) {
        event.preventDefault();
        $.getJSON(this.href + 'json/', function(data) {
            // Map each file item into an <li/> with the correct class
            var list_items = $.map(data.files, function(value, i) {
                var cls = value.match(/\/$/) ? 'd' : 'f';
                return ['<li class="', cls, '">', value, '</li>'];
            });
            $('#pkgfilelist').empty();
            if (data.pkg_last_update > data.files_last_update) {
                $('#pkgfilelist').append('<p class="message">Note: This file list was generated from a previous version of the package; it may be out of date.</p>');
            }
            if (list_items.length > 0) {
                $('#pkgfilelist').append('<ul>' + list_items.join('') + '</ul>');
            } else if (data.files_last_update === null) {
                $('#pkgfilelist').append('<p class="message">No file list available.</p>');
            } else {
                $('#pkgfilelist').append('<p class="message">Package has no files.</p>');
            }
        });
    });
}

function collapseDependsList(list) {
    list = $(list);
    // Hide everything past a given limit. Don't do anything if we don't have
    // enough items, or the link already exists.
    var limit = 20,
        linkid = list.attr('id') + 'link',
        items = list.find('li').slice(limit);
    if (items.length <= 1 || $('#' + linkid).length > 0) {
        return;
    }
    items.hide();
    list.after('<p><a id="' + linkid + '" href="#">Show More…</a></p>');

    // add link and wire it up to show the hidden items
    $('#' + linkid).click(function(event) {
        event.preventDefault();
        list.find('li').show();
        // remove the full <p/> node from the DOM
        $(this).parent().remove();
    });
}

function collapseRelatedTo(elements) {
    var limit = 5;
    $(elements).each(function(idx, ele) {
        ele = $(ele);
        // Hide everything past a given limit. Don't do anything if we don't
        // have enough items, or the link already exists.
        var items = ele.find('span.related').slice(limit);
        if (items.length <= 1 || ele.find('a.morelink').length > 0) {
            return;
        }
        items.hide();
        ele.append('<a class="morelink" href="#">More…</a>');

        // add link and wire it up to show the hidden items
        ele.find('a.morelink').click(function(event) {
            event.preventDefault();
            ele.find('span.related').show();
            $(this).remove();
        });
    });
}

/* packages/differences.html */
function filter_packages() {
    /* start with all rows, and then remove ones we shouldn't show */
    var rows = $('#tbody_differences').children(),
        all_rows = rows;
    if (!$('#id_multilib').is(':checked')) {
        rows = rows.not('.multilib').not('.multilib-testing');
    }
    var arch = $('#id_archonly').val();
    if (arch !== 'all') {
        rows = rows.filter('.' + arch);
    }
    if (!$('#id_minor').is(':checked')) {
        /* this check is done last because it is the most expensive */
        var pat = /(.*)-(.+)/;
        rows = rows.filter(function(index) {
            var cells = $(this).children('td');

            /* all this just to get the split version out of the table cell */
            var ver_a = cells.eq(2).find('span').text().match(pat);
            if (!ver_a) {
                return true;
            }

            var ver_b = cells.eq(3).find('span').text().match(pat);
            if (!ver_b) {
                return true;
            }

            /* first check pkgver */
            if (ver_a[1] !== ver_b[1]) {
                return true;
            }
            /* pkgver matched, so see if rounded pkgrel matches */
            if (Math.floor(parseFloat(ver_a[2])) ===
                    Math.floor(parseFloat(ver_b[2]))) {
                return false;
            }
            /* pkgrel didn't match, so keep the row */
            return true;
        });
    }
    /* hide all rows, then show the set we care about */
    all_rows.hide();
    rows.show();
    /* make sure we update the odd/even styling from sorting */
    $('.results').trigger('applyWidgets', [false]);
}
function filter_packages_reset() {
    $('#id_archonly').val('both');
    $('#id_multilib').removeAttr('checked');
    $('#id_minor').removeAttr('checked');
    filter_packages();
}

/* todolists/view.html */
function todolist_flag() {
    // TODO: fix usage of this
    var link = this;
    $.getJSON(link.href, function(data) {
        $(link).text(data.status).removeClass(
            'complete inprogress incomplete').addClass(
            data.css_class.toLowerCase());
        /* let tablesorter know the cell value has changed */
        $('.results').trigger('updateCell', [$(link).closest('td')[0], false, null]);
    });
    return false;
}

function filter_pkgs_list(filter_ele, tbody_ele) {
    /* start with all rows, and then remove ones we shouldn't show */
    var rows = $(tbody_ele).children(),
        all_rows = rows;
    /* apply the filters, cheaper ones first */
    if ($('#id_mine_only').is(':checked')) {
        rows = rows.filter('.mine');
    }
    /* apply arch and repo filters */
    $(filter_ele + ' .arch_filter').add(
            filter_ele + ' .repo_filter').each(function() {
        if (!$(this).is(':checked')) {
            rows = rows.not('.' + $(this).val());
        }
    });
    /* more expensive filter because of 'has' call */
    if ($('#id_incomplete').is(':checked')) {
        rows = rows.has('.incomplete');
    }
    /* hide all rows, then show the set we care about */
    all_rows.hide();
    rows.show();
    $('#filter-count').text(rows.length);
    /* make sure we update the odd/even styling from sorting */
    $('.results').trigger('applyWidgets', [false]);
}
function filter_pkgs_reset(callback) {
    $('#id_incomplete').removeAttr('checked');
    $('#id_mine_only').removeAttr('checked');
    $('.arch_filter').attr('checked', 'checked');
    $('.repo_filter').attr('checked', 'checked');
    callback();
}

function filter_todolist_save(list_id) {
    var state = $('#todolist_filter').serializeArray();
    localStorage['filter_todolist_' + list_id] = JSON.stringify(state);
}
function filter_todolist_load(list_id) {
    var state = localStorage['filter_todolist_' + list_id];
    if (!state)
        return;
    state = JSON.parse(state);
    $('#todolist_filter input[type="checkbox"]').removeAttr('checked');
    $.each(state, function (i, v) {
        // this assumes our only filters are checkboxes
        $('#todolist_filter input[name="' + v['name'] + '"]').attr('checked', 'checked');
    });
}

function filter_report_save(report_id) {
    var state = $('#report_filter').serializeArray();
    localStorage['filter_report_' + report_id] = JSON.stringify(state);
}
function filter_report_load(report_id) {
    var state = localStorage['filter_report_' + report_id];
    if (!state)
        return;
    state = JSON.parse(state);
    $('#report_filter input[type="checkbox"]').removeAttr('checked');
    $.each(state, function (i, v) {
        // this assumes our only filters are checkboxes
        $('#report_filter input[name="' + v['name'] + '"]').attr('checked', 'checked');
    });
}

/* signoffs.html */
function signoff_package() {
    // TODO: fix usage of this
    var link = this;
    $.getJSON(link.href, function(data) {
        link = $(link);
        var signoff = null,
            cell = link.closest('td');
        if (data.created) {
            signoff = $('<li>').addClass('signed-username').text(data.user);
            var list = cell.children('ul.signoff-list');
            if (list.size() === 0) {
                list = $('<ul class="signoff-list">').prependTo(cell);
            }
            list.append(signoff);
        } else if(data.user) {
            signoff = link.closest('td').find('li').filter(function(index) {
                return $(this).text() == data.user;
            });
        }
        if (signoff && data.revoked) {
            signoff.text(signoff.text() + ' (revoked)');
        }
        /* update the approved column to reflect reality */
        var approved = link.closest('tr').children('.approval');
        approved.attr('class', 'approval');
        if (data.known_bad) {
            approved.text('Bad').addClass('signoff-bad');
        } else if (!data.enabled) {
            approved.text('Disabled').addClass('signoff-disabled');
        } else if (data.approved) {
            approved.text('Yes').addClass('signoff-yes');
        } else {
            approved.text('No').addClass('signoff-no');
        }
        link.removeAttr('title');
        /* Form our new link. The current will be something like
         * '/packages/repo/arch/package/...' */
        var base_href = link.attr('href').split('/').slice(0, 5).join('/');
        if (data.revoked) {
            link.text('Signoff');
            link.attr('href', base_href + '/signoff/');
            /* should we be hiding the link? */
            if (data.known_bad || !data.enabled) {
                link.remove();
            }
        } else {
            link.text('Revoke Signoff');
            link.attr('href', base_href + '/signoff/revoke/');
        }
        /* let tablesorter know the cell value has changed */
        $('.results').trigger('updateCell', [approved[0], false, null]);
    });
    return false;
}

function filter_signoffs() {
    /* start with all rows, and then remove ones we shouldn't show */
    var rows = $('#tbody_signoffs').children(),
        all_rows = rows;
    /* apply arch and repo filters */
    $('#signoffs_filter .arch_filter').add(
            '#signoffs_filter .repo_filter').each(function() {
        if (!$(this).is(':checked')) {
            rows = rows.not('.' + $(this).val());
        }
    });
    /* and then the slightly more expensive pending check */
    if ($('#id_pending').is(':checked')) {
        rows = rows.has('td.signoff-no');
    }
    /* hide all rows, then show the set we care about */
    all_rows.hide();
    rows.show();
    $('#filter-count').text(rows.length);
    /* make sure we update the odd/even styling from sorting */
    $('.results').trigger('applyWidgets', [false]);
    filter_signoffs_save();
}
function filter_signoffs_reset() {
    $('#signoffs_filter .arch_filter').attr('checked', 'checked');
    $('#signoffs_filter .repo_filter').attr('checked', 'checked');
    $('#id_pending').removeAttr('checked');
    filter_signoffs();
}
function filter_signoffs_save() {
    var state = $('#signoffs_filter').serializeArray();
    localStorage['filter_signoffs'] = JSON.stringify(state);
}
function filter_signoffs_load() {
    var state = localStorage['filter_signoffs'];
    if (!state)
        return;
    state = JSON.parse(state);
    $('#signoffs_filter input[type="checkbox"]').removeAttr('checked');
    $.each(state, function (i, v) {
        // this assumes our only filters are checkboxes
        $('#signoffs_filter input[name="' + v['name'] + '"]').attr('checked', 'checked');
    });
}

function collapseNotes(elements) {
    // Remove any trailing <br/> tags from the note contents
    $(elements).children('br').filter(':last-child').filter(function(i, e) { return !e.nextSibling; }).remove();

    var maxElements = 8;
    $(elements).each(function(idx, ele) {
        ele = $(ele);
        // Hide everything past a given limit. Don't do anything if we don't
        // have enough items, or the link already exists.
        var contents = ele.contents();
        if (contents.length <= maxElements || ele.find('a.morelink').length > 0) {
            return;
        }
        contents.slice(maxElements).wrapAll('<div class="hide"/>');
        ele.append('<br class="morelink-spacer"/><a class="morelink" href="#">Show More…</a>');

        // add link and wire it up to show the hidden items
        ele.find('a.morelink').click(function(event) {
            event.preventDefault();
            $(this).remove();
            ele.find('br.morelink-spacer').remove();
            // move the div contents back and delete the empty div
            var hidden = ele.find('div.hide');
            hidden.contents().appendTo(ele);
            hidden.remove();
        });
    });
}

/* visualizations */
function format_filesize(size, decimals) {
    /*var labels = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];*/
    var labels = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
        label = 0;

    while (size > 2048.0 && label < labels.length - 1) {
        label++;
        size /= 1024.0;
    }
    if (decimals === undefined) {
        decimals = 2;
    }

    return size.toFixed(decimals) + ' ' + labels[label];
}

/* HTML5 input type and attribute enhancements */
function modify_attributes(to_change) {
    /* jQuery doesn't let us change the 'type' attribute directly due to IE
       woes, so instead we can clone and replace, setting the type. */
    $.each(to_change, function(id, attrs) {
        var obj = $(id);
        obj.replaceWith(obj.clone().attr(attrs));
    });
}