// VeiwCustomizerに登録すること

$(function(){

    $(document).on('paste', '#issue_description, #issue_notes', function(event){

        const e = event.originalEvent;
        if (e.clipboardData.types.indexOf('text/html') == -1) {
            return;
        }
        const df = document.createDocumentFragment();
        const htmlTag = document.createElement('html');
        htmlTag.innerHTML = e.clipboardData.getData('text/html');
        df.appendChild(htmlTag);

        const css = df.querySelector('style').textContent.replace(/[\r\n\t ]+/g,' ').replace(/mso-.*?;/g,'');

        const textileTable = Array.prototype.map.call(df.querySelectorAll('table'), function(table){
            var txt = "";
            table.querySelectorAll('tr').forEach(function(tr){
                txt += '|';
                tr.querySelectorAll('td').forEach(function(td){
                    var attribute = "";
                    if (td.colSpan > 1) {
                        attribute += '\\' + td.colSpan;
                    }
                    if (td.rowSpan > 1) {
                        attribute += '/' + td.rowSpan;
                    }
                    if (td.className) {
                        const pattern = new RegExp(td.className + '[ ]*\{(.*?)\}');
                        //const pattern = '/' + td.className + '[ ]*\{(.*?)\}/';
                        attribute += '{' + css.match(pattern)[1].trim() + '}';
                    }
                    if (attribute) {
                        txt += attribute + ".";
                    }
                    txt += td.innerText + "|";
                });
                txt += '\n';
            });
            txt += '\n';
            return txt;
        });

        var start = this.selectionStart;
        var end = this.selectionEnd;
        const $this = $(this);
        $this.val($this.val().substring(0, start) + textileTable[0] + $this.val().substring(end));
        e.preventDefault();
    });
})