alphascript-server/lib/db/mongo/list.js

CRUD operations for mongo and other functionalities to get started quickly in any CMS project

var api = require('../../../');
var Q = require('q');
var moment = require('moment');
var PdfTable = require('voilab-pdf-table');
var PdfDocument = require('pdfkit');

module.exports = {
  getList: function (listKey) {
    var list = api.listMap[listKey];

    return function (req, res) {
      //parse parameters
      if (req.query.query) req.query.query = JSON.parse(req.query.query);

      //get data
      list.get(req, function (err, result) {
        if (err) return res.status(500).send(err);

        //setup dynamic cols if applicable
        var items, cols;
        if (result instanceof Array) {
          items = result;
          cols = list.metadata.cols;
        }
        else {
          items = result.items;
          cols = result.cols;
        }

        //setup excel
        var xlsHeader = {};
        cols.forEach(function (col) {
          xlsHeader[col.field] = col.title;
        });

        if (req.query.xls) {
          //on spreadsheet
          var xls = { sheets: [] };
          var filename = list.metadata.caption + ' ' + moment().format('YYYY-MM-DD') + '.xlsx';
          xls.sheets.push({ header: xlsHeader, sheetName: req.params.db, items: items });
          res.setHeader('Content-Type', 'application/vnd.openxmlformats');
          res.setHeader("Content-Disposition", "attachment; filename=" + filename);
          return res.send(api.xlsx.fromJson(xls));
        }
        else if (req.query.pdf) {
          //on pdf
          var pdf = new PdfDocument({
            autoFirstPage: false,
            size: [842, 595],
            bufferPages: true,
          });
          pdf.fontSize(8);

          var pdfCols = cols.map(function (col) {
            return {
              id: col.field,
              header: col.title,
              width: (842 - 130) / cols.length,
              padding: [2, 2, 2, 2],
            };
          });

          var table = new PdfTable(pdf, { bottomMargin: 30 });
          table.setColumnsDefaults({
            headerBorder: 'LTBR',
            headerPadding: [2, 2, 2, 2],
            border: 'LTBR',
            align: 'left',
          }).addColumns(pdfCols).onPageAdded(function (tb) {
            tb.pdf.image(api.options.logoPath, 75, 30, { height: 45 });
            tb.pdf.text(api.options.appName + " " + moment().format('YYYY') + " - Todos os direitos reservados", 75, 77);
            tb.pdf.text("Listagem parametrizada pelo utilizador a dia " + moment().format('YYYY-MM-DD') + " - " + items.length + " registos", 75, 85);
            tb.addHeader();
          });

          pdf.addPage();
          pdf.image(api.options.logoPath, 75, 30, { height: 45 });
          pdf.text(api.options.appName + " " + moment().format('YYYY') + " - Todos os direitos reservados", 75, 77);
          pdf.text("Listagem parametrizada pelo utilizador a dia " + moment().format('YYYY-MM-DD') + " - " + items.length + " registos", 75, 85);

          items = items.map(function (item) {
            for (var key in item) {
              if (typeof item[key] === 'undefined') continue;
              if (!item[key] && item[key] !== 0) continue;
              if (typeof item[key] !== 'string' && typeof item[key].toString === 'function') {
                item[key] = item[key].toString();
              }
            }
            return item;
          });
          table.addBody(items);

          pdf.pipe(res);
          return pdf.end();
        }
        else {
          //on screen
          return res.json({ items: items, cols: cols });
        }
      });
    };
  },

  getMetadata: function (req, res) {
    var lists = [];
    for (var key in api.listMap) {
      lists.push(api.listMap[key].metadata);
    }
    lists.sort(function (a, b) {
      if (a.category < b.category) return -1;
      if (a.category > b.category) return 1;
      return 0;
    });
    res.json(lists);
  }
};