src/lib/analytics.cc

   1 /*
   2     Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "analytics.h"
  22 #include "exceptions.h"
  23 #include <dcp/raw_convert.h>
  24 #include <libcxml/cxml.h>
  25 #include <libxml++/libxml++.h>
  26 #include <boost/filesystem.hpp>
  27 #include <boost/algorithm/string.hpp>
  28
  29 #include "i18n.h"
  30
  31 using std::string;
  32 using dcp::raw_convert;
  33 using boost::algorithm::trim;
  34
  35 Analytics* Analytics::_instance;
  36 int const Analytics::_current_version = 1;
  37
  38 Analytics::Analytics ()
  39         : _successful_dcp_encodes (0)
  40 {
  41
  42 }
  43
  44 void
  45 Analytics::successful_dcp_encode ()
  46 {
  47         ++_successful_dcp_encodes;
  48         write ();
  49
  50         if (_successful_dcp_encodes == 3) {
  51                 emit (
  52                         boost::bind(
  53                                 boost::ref(Message),
  54                                 _("Congratulations!"),
  55                                 _(
  56                                         "<h2>You have made 3 DCPs with DCP-o-matic!</h2>"
  57                                         "<img width=\"20%\" src=\"memory:me.jpg\" align=\"center\">"
  58                                         "<p>Hello. I'm Carl and I'm the "
  59                                         "developer of DCP-o-matic. I work on it in my spare time (with the help "
  60                                         "of a fine volunteer team of testers and translators) and I release it "
  61                                         "as free software."
  62
  63                                         "<p>If you find DCP-o-matic useful, please consider a donation to the "
  64                                         "project. Financial support will help me to spend more "
  65                                         "time developing DCP-o-matic and making it better!"
  66
  67                                         "<p><ul>"
  68                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=40\">Go to Paypal to donate £40</a>"
  69                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=20\">Go to Paypal to donate £20</a>"
  70                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=10\">Go to Paypal to donate £10</a>"
  71                                         "</ul>"
  72
  73                                         "<p>Thank you!"
  74                                         )
  75                                 )
  76                         );
  77         }
  78 }
  79
  80 void
  81 Analytics::write () const
  82 {
  83         xmlpp::Document doc;
  84         xmlpp::Element* root = doc.create_root_node ("Analytics");
  85
  86         root->add_child("Version")->add_child_text(raw_convert<string>(_current_version));
  87         root->add_child("SuccessfulDCPEncodes")->add_child_text(raw_convert<string>(_successful_dcp_encodes));
  88
  89         try {
  90                 doc.write_to_file_formatted(path("analytics.xml").string());
  91         } catch (xmlpp::exception& e) {
  92                 string s = e.what ();
  93                 trim (s);
  94                 throw FileError (s, path("analytics.xml"));
  95         }
  96 }
  97
  98 void
  99 Analytics::read ()
 100 try
 101 {
 102         cxml::Document f ("Analytics");
 103         f.read_file (path("analytics.xml"));
 104         _successful_dcp_encodes = f.number_child<int>("SuccessfulDCPEncodes");
 105 } catch (...) {
 106         /* Never mind */
 107 }
 108
 109 Analytics*
 110 Analytics::instance ()
 111 {
 112         if (!_instance) {
 113                 _instance = new Analytics();
 114                 _instance->read();
 115         }
 116
 117         return _instance;
 118 }