frylord/actions/read-file.js

'use strict';

var when = require('when');
var pipeline = require('when/pipeline');

var filer = require('../filer');

var opts = {
  persistent: true,
  size: 1024 * 1024
};

function createAction(content) {
  return {
    type: 'READ_FILE',
    payload: { content: content }
  };
}

function read(file) {
  return when.promise(function (resolve, reject) {
    var reader = new FileReader();

    reader.onload = function (evt) {
      return resolve(evt.target.result);
    };
    reader.onerror = reject;
    reader.readAsText(file);
  });
}

function readFile(filename) {
  var seq = [function () {
    return filer.init(opts);
  }, function () {
    return filer.open(filename);
  }, function (file) {
    return read(file);
  }];

  return pipeline(seq).then(createAction);
}

module.exports = readFile;