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 "compose.hpp"
  24 #include <dcp/raw_convert.h>
  25 #include <libcxml/cxml.h>
  26 #include <libxml++/libxml++.h>
  27 #include <boost/filesystem.hpp>
  28 #include <boost/algorithm/string.hpp>
  29
  30 #include "i18n.h"
  31
  32 using std::string;
  33 using dcp::raw_convert;
  34 using boost::algorithm::trim;
  35
  36 Analytics* Analytics::_instance;
  37 int const Analytics::_current_version = 1;
  38
  39 Analytics::Analytics ()
  40         : _successful_dcp_encodes (0)
  41 {
  42
  43 }
  44
  45 void
  46 Analytics::successful_dcp_encode ()
  47 {
  48         ++_successful_dcp_encodes;
  49         write ();
  50
  51         if (_successful_dcp_encodes == 20) {
  52                 emit (
  53                         boost::bind(
  54                                 boost::ref(Message),
  55                                 _("Congratulations!"),
  56                                 String::compose (_(
  57                                         "<h2>You have made %1 DCPs with DCP-o-matic!</h2>"
  58                                         "<img width=\"20%%\" src=\"memory:me.jpg\" align=\"center\">"
  59                                         "<p>Hello. I'm Carl and I'm the "
  60                                         "developer of DCP-o-matic. I work on it in my spare time (with the help "
  61                                         "of a fine volunteer team of testers and translators) and I release it "
  62                                         "as free software."
  63
  64                                         "<p>If you find DCP-o-matic useful, please consider a donation to the "
  65                                         "project. Financial support will help me to spend more "
  66                                         "time developing DCP-o-matic and making it better!"
  67
  68                                         "<p><ul>"
  69                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=40\">Go to Paypal to donate €40</a>"
  70                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=20\">Go to Paypal to donate €20</a>"
  71                                         "<li><a href=\"https://dcpomatic.com/donate_amount?amount=10\">Go to Paypal to donate €10</a>"
  72                                         "</ul>"
  73
  74                                         "<p>Thank you!"), _successful_dcp_encodes
  75                                         )
  76                                 )
  77                         );
  78         }
  79 }
  80
  81 void
  82 Analytics::write () const
  83 {
  84         xmlpp::Document doc;
  85         xmlpp::Element* root = doc.create_root_node ("Analytics");
  86
  87         root->add_child("Version")->add_child_text(raw_convert<string>(_current_version));
  88         root->add_child("SuccessfulDCPEncodes")->add_child_text(raw_convert<string>(_successful_dcp_encodes));
  89
  90         try {
  91                 doc.write_to_file_formatted(path("analytics.xml").string());
  92         } catch (xmlpp::exception& e) {
  93                 string s = e.what ();
  94                 trim (s);
  95                 throw FileError (s, path("analytics.xml"));
  96         }
  97 }
  98
  99 void
 100 Analytics::read ()
 101 try
 102 {
 103         cxml::Document f ("Analytics");
 104         f.read_file (path("analytics.xml"));
 105         _successful_dcp_encodes = f.number_child<int>("SuccessfulDCPEncodes");
 106 } catch (...) {
 107         /* Never mind */
 108 }
 109
 110 Analytics*
 111 Analytics::instance ()
 112 {
 113         if (!_instance) {
 114                 _instance = new Analytics();
 115                 _instance->read();
 116         }
 117
 118         return _instance;
 119 }