/**
 * The Indexmenu Wizard
 *
 * @author Gerrit Uitslag
 * based on Linkwiz by
 * @author Andreas Gohr <gohr@cosmocode.de>
 * @author Pierre Spring <pierre.spring@caillou.ch>
 * and the concepts of the old indexmenu wizard
 */
const indexmenu_wiz = {
    $wiz:     null,
    timer:    null,
    textArea: null,

    defaulttheme: 'default',
    fields:       {
        div1: {
            elems: {
                jstoggle: {label: 'js'}
            }
        },
        div2: {
            tlbclass: 'jsitem theme',
            elems:    {
                el1: {headerid: 'theme'}
            }
        },
        div3: {
            elems: {
                el2:      {headerid: 'navigation'},
                navbar:   {},
                context:  {},
                nocookie: {tlbclass: 'jsitem'},
                noscroll: {tlbclass: 'jsitem'},
                notoc:    {tlbclass: 'jsitem'}
            }
        },
        div4: {
            elems: {
                el3:   {headerid: 'sort'},
                tsort: {},
                dsort: {},
                msort: {},
                hsort: {},
                rsort: {},
                nsort: {}
            }
        },
        div5: {
            elems: {
                el4:  {headerid: 'filter'},
                nons: {},
                nopg: {}
            }
        },
        div6: {
            tlbclass: 'jsitem',
            elems:    {
                el5:   {headerid: 'performance'},
                max:   {tlbclass: 'jsitem', numberinput: ['maxn', 'maxm']},
                maxjs: {tlbclass: 'jsitem', numberinput: ['maxjsn']},
                id:    {tlbclass: 'jsitem', numberinput: ['idn']}
            }
        }
    },

    /**
     * Initialize the indexmenu_wiz by creating the needed HTML
     * and attaching the eventhandlers
     */
    init: function ($editor) {
        // position relative to the text area
        const pos = $editor.position();

        // create HTML Structure
        indexmenu_wiz.$wiz = jQuery(document.createElement('div'))
            .dialog({
                autoOpen:  false,
                draggable: true,
                title:     LANG.plugins.indexmenu.indexmenuwizard,
                resizable: false
            })
            .html(
                '<fieldset class="indexmenu_index"><legend>' + LANG.plugins.indexmenu.index + '</legend>' +
                '<div><label>' + LANG.plugins.indexmenu.namespace + '<input id="namespace" type="text"></label></div>' +
                '<div><label class="number">' + LANG.plugins.indexmenu.nsdepth + ' #<input id="nsdepth" type="text" value=1></label></div>' +
                '</fieldset>' +

                '<fieldset class="indexmenu_options"><legend>' + LANG.plugins.indexmenu.options + '</legend>' +
                '</fieldset>' +
                '<input type="submit" value="' + LANG.plugins.indexmenu.insert + '" class="button" id="indexmenu__insert">' +

                '<fieldset class="indexmenu_metanumber">' +
                '<label class="number">' + LANG.plugins.indexmenu.metanum + '<input type="text" id="metanumber"></label>' +
                '<input type="submit" value="' + LANG.plugins.indexmenu.insertmetanum + '" class="button" id="indexmenu__insertmetanum">' +
                '</fieldset>'
            )
            .parent()
            .attr('id', 'indexmenu__wiz')
            .css({
                'position': 'absolute',
                'top':      (pos.top + 20) + 'px',
                'left':     (pos.left + 80) + 'px'
            })
            .hide()
            .appendTo('.dokuwiki:first');

        indexmenu_wiz.textArea = $editor[0];
        let $opt_fieldset = jQuery('#indexmenu__wiz fieldset.indexmenu_options');

        jQuery.each(indexmenu_wiz.fields, function (i, section) {
            let div = jQuery('<div>').addClass(section.tlbclass);

            jQuery.each(section.elems, function (elid, props) {
                if (props.headerid) {
                    div.append('<strong>' + LANG.plugins.indexmenu[props.headerid] + '</strong><br />');
                } else {
                    let label = props.label || elid;
                    //checkbox
                    jQuery("<label>")
                        .addClass(props.tlbclass).addClass(props.numberinput ? ' hasnumber' : '')
                        .html('<input id="' + elid + '" type="checkbox">' + label)
                        .attr({title: LANG.plugins.indexmenu[elid]})
                        .appendTo(div);

                    //number inputs
                    if (props.numberinput) {
                        jQuery.each(props.numberinput, function (j, numid) {
                            jQuery("<label>")
                                .attr({title: LANG.plugins.indexmenu[elid]})
                                .addClass("number " + props.tlbclass)
                                .html('#<input type="text" id="' + numid + '">')
                                .appendTo(div);
                        });
                    }
                }
            });
            $opt_fieldset.append(div);
        });

        indexmenu_wiz.includeThemes();

        if (JSINFO && JSINFO.namespace) {
            jQuery('#namespace').val(':' + JSINFO.namespace);
        }

        // attach event handlers

        //toggle js fields
        jQuery('#jstoggle')
            .on('change', function () {
                jQuery('#indexmenu__wiz .jsitem').toggle(this.checked);
            }).trigger('change')
            .parent().css({display: 'inline-block', width: '40px'}); //enlarge clickable area of label

        //interactive number fields
        jQuery('label.number input').on('keydown keyup', function () {
            //allow only numbers
            indexmenu_wiz.filterNumberinput(this);
            //checked the option if a number in input
            indexmenu_wiz.autoCheckboxForNumbers(this);
        });

        jQuery('#indexmenu__insert').on('click', indexmenu_wiz.insertIndexmenu);
        jQuery('#indexmenu__insertmetanum').on('click', indexmenu_wiz.insertMetaNumber);

        jQuery('#indexmenu__wiz').find('.ui-dialog-titlebar-close').on('click', indexmenu_wiz.hide);
    },

    /**
     * Request and include themes in wizard
     */
    includeThemes: function () {

        let addButtons = function (data) {
            jQuery('<div>')
                .attr('id', 'themebar')
                .addClass('toolbar')
                .appendTo('div.theme');

            jQuery.each(data.themes, function (i, theme) {
                let themeName = theme.split('.');

                let icoUrl = DOKU_BASE + data.themebase + '/' + theme + '/base.' + IndexmenuUtils.determineExtension(theme);
                let $ico = jQuery('<div>')
                    .css({background: 'url(' + icoUrl + ') no-repeat center'});
                jQuery('<button>')
                    .addClass('themebutton toolbutton')
                    .attr('id', theme)
                    .attr('title', themeName[0])
                    .append($ico)
                    .on('click', indexmenu_wiz.selectTheme)
                    .appendTo('div#themebar');
            });

            //select default theme
            jQuery('#themebar button#' + indexmenu_wiz.defaulttheme).trigger('click');
        };

        jQuery.post(
            DOKU_BASE + 'lib/exe/ajax.php',
            {call: 'indexmenu', req: 'local'},
            addButtons,
            'json'
        );
    },

    /**
     * set class 'selected' to clicked theme, remove from other
     */
    selectTheme: function () {
        jQuery('.themebutton').toggleClass('selected', false);
        jQuery(this).toggleClass('selected', true);
    },

    /**
     * Allow only number, by direct removing other characters from input
     */
    filterNumberinput: function (elem) {
        if (elem.value.match(/\D/)) {
            elem.value = this.value.replace(/\D/g, '');
        }
    },

    /**
     * When a number larger than zero is inputted, check the checkbox
     */
    autoCheckboxForNumbers: function (elem) {
        let checkboxid = elem.id.substring(0, elem.id.length - 1);
        let value = elem.value;
        //exception for second number field of max: only uncheck when first field is also empty
        if (elem.id === 'maxm' && !(elem.value > 0)) {
            value = parseInt(jQuery('input#maxn').val());
        }
        jQuery('input#' + checkboxid).prop('checked', value > 0);
    },

    /**
     * Insert the indexmenu with options to the textarea,
     * replacing the current selection or at the cursor position.
     */
    insertIndexmenu: function () {
        let options = '';
        jQuery('fieldset.indexmenu_options input').each(function (i, input) {
            let $label = jQuery(this).parent();

            if (input.checked && (!$label.hasClass('jsitem') || jQuery('input#jstoggle').is(':checked'))) {
                if (input.id === 'jstoggle') {
                    //add js options
                    options += ' js';
                    //add theme
                    let themename = jQuery('#themebar button.selected').attr('id');
                    if (indexmenu_wiz.defaulttheme !== themename) { //skip default theme
                        options += '#' + themename;
                    }
                } else {
                    //add option
                    options += ' ' + input.id;
                    //add numbers
                    if ($label.hasClass('hasnumber')) {
                        jQuery.each(indexmenu_wiz.fields.div6.elems[input.id].numberinput, function (j, numid) {
                            let num = parseInt(jQuery('input#' + numid).val());
                            options += num ? '#' + num : '';
                        });
                    }
                }
            }

        });
        options = options ? '|' + options.trim() : '';

        let sel, ns, depth, syntax, eo;

        // XXX: Compatibility Fix for 2014-05-05 "Ponder Stibbons", splitbrain/dokuwiki#505
        if (DWgetSelection) {
            sel = DWgetSelection(indexmenu_wiz.textArea);
        } else {
            sel = getSelection(indexmenu_wiz.textArea);
        }


        ns = jQuery('#namespace').val();
        depth = parseInt(jQuery('#nsdepth').val());
        depth = depth ? '#' + depth : '';

        syntax = '{{indexmenu>' + ns + depth + options + '}}';
        eo = depth.length + options.length + 2;

        pasteText(sel, syntax, {startofs: 12, endofs: eo});
        indexmenu_wiz.hide();
    },

    /**
     * Insert meta number for sorting in textarea
     * Takes number from input, otherwise tries the selection in textarea
     */
    insertMetaNumber: function () {
        let sel, selnum, syntax, number;

        // XXX: Compatibility Fix for 2014-05-05 "Ponder Stibbons", splitbrain/dokuwiki#505
        if (DWgetSelection) {
            sel = DWgetSelection(indexmenu_wiz.textArea);
        } else {
            sel = getSelection(indexmenu_wiz.textArea);
        }

        selnum = parseInt(sel.getText());
        number = parseInt(jQuery('input#metanumber').val());
        number = number || selnum || 1;
        syntax = '{{indexmenu_n>' + number + '}}';

        pasteText(sel, syntax, {startofs: 14, endofs: 2});
        indexmenu_wiz.hide();
    },

    /**
     * Show the indexmenu wizard
     */
    show: function () {
        // XXX: Compatibility Fix for 2014-05-05 "Ponder Stibbons", splitbrain/dokuwiki#505
        if (DWgetSelection) {
            indexmenu_wiz.selection = DWgetSelection(indexmenu_wiz.textArea);
        } else {
            indexmenu_wiz.selection = getSelection(indexmenu_wiz.textArea);
        }

        indexmenu_wiz.$wiz.show();
        jQuery('#namespace').trigger('focus');
    },

    /**
     * Hide the indexmenu wizard
     */
    hide: function () {
        indexmenu_wiz.$wiz.hide();
        indexmenu_wiz.textArea.focus(); //pure js
    },

    /**
     * Toggle the indexmenu wizard
     */
    toggle: function () {
        if (indexmenu_wiz.$wiz.css('display') === 'none') {
            indexmenu_wiz.show();
        } else {
            indexmenu_wiz.hide();
        }
    }
};