# HG changeset patch
# User Lennard de Rijk <ljvderijk@gmail.com>
# Date 1237924175 0
# Node ID 4d9e41c947fd54d6802f63d01fbbac26b7f5e6f3
# Parent  ed24a0bd19d98e1696099d7a61e97c35c389bdb0
Added JS to the duplicate proposals page.

TODO's:
Caching
Fix the recalculate to properly clear the previous iteration.

Patch by: Mario Ferraro
Reviewed by: Lennard de Rijk

diff -r ed24a0bd19d9 -r 4d9e41c947fd app/soc/content/js/duplicate-slots-090324.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/content/js/duplicate-slots-090324.js	Tue Mar 24 19:49:35 2009 +0000
@@ -0,0 +1,182 @@
+//http://www.digital-web.com/articles/scope_in_javascript/
+var duplicateSlots = new function() {
+  // this variable will contain all the org details, and filled
+  // incrementally
+  var orgs_details = {};
+  // this variable will contain all student/proposal data details,
+  // filled incrementally
+  var assigned_proposals = new Array();
+
+  // public function to begin iterating load of JSONs and then call printing
+  // of duplicates
+
+  this.showDuplicatesInit = function() {
+
+    // Remember this object for Javascript scoping
+    var this_object = this;
+    var NUMBER_OF_ORGS = number_of_orgs;
+    var OFFSET_LENGTH = offset_length;
+    // Variables to handle progress bar updating
+    var ITERATIONS = (number_of_orgs % offset_length)==0 ? Math.floor(number_of_orgs/offset_length) : Math.floor(number_of_orgs/offset_length)+1;
+    var successful_calls = 0;
+
+    $("#id_button_duplicate_slots").fadeOut("slow",
+      function() {
+        $("#duplicates_progress_bar").progressBar(0);
+        $("#description_done").html("");
+        // For every ajax success, bind this function to update user feedback
+        $(this).bind("ajaxSuccess", function() {
+          successful_calls++;
+          var percentage = Math.floor(100 * (successful_calls) / (ITERATIONS));
+          $("#duplicates_progress_bar").progressBar(percentage);
+          $("#description_progressbar").html(" Processed orgs chunk " + (successful_calls) + "/" + ITERATIONS);
+          // If this is the last call, feedback the user and print the duplicates data
+          if (successful_calls==ITERATIONS) {
+            $("#applications_progress_bar").fadeOut("slow",
+              function() {
+                $("#duplicates_progress_bar").progressBar(0);
+                $("#id_button_duplicate_slots").fadeIn("slow");
+              }
+            );
+            $("#description_progressbar").html("");
+            $("#description_done").html("<strong> Done!</strong>");
+            $("#duplicates_progress_bar").fadeOut("slow",
+              function() {
+                $("#id_button_duplicate_slots").val("Recalculate").fadeIn("slow",
+                  function() {
+                    // Call printing to HTML function with correct scope
+                    printDuplicatesAndSendJSON.call(this_object);
+                  }
+                );
+              }
+            );
+          }
+        });
+        // Call the showDuplicates function for the first time with correct scope
+        $("#duplicates_progress_bar").fadeIn("slow", showDuplicates.apply(this_object,[url_to_query,OFFSET_LENGTH,NUMBER_OF_ORGS]));
+      }
+    );
+  }
+
+  function showDuplicates(url_to_query,OFFSET_LENGTH,NUMBER_OF_ORGS) {
+    var current_offset = 0;
+
+    // Here Ajax call is handled
+    setTimeout(function() {
+      $.ajax({
+        cache:false,
+        mode: "sync",
+        type: "POST",
+        timeout: 1000000,
+        dataType: "json",
+        url: "/program/assigned_proposals/"+url_to_query+"?limit="+OFFSET_LENGTH+"&offset="+current_offset+"&_="+(new Date().getTime()),
+        success: function (data, textStatus) {
+          if (data) {
+            // Load JSON data
+            loadSingleJSONData(data);
+          }
+        },
+        error: function(XMLHttpRequest, textStatus, errorThrown) {
+          // if there is an error return the button and leave a try again message
+          if (XMLHttpRequest!=undefined) {
+            $("#id_button_duplicate_slots").fadeIn("slow", function() {
+	      $("#description_done").html("<strong class='error'> Error encountered, try again</strong>");
+            });
+          }
+       }
+      });
+      current_offset+=OFFSET_LENGTH;
+      if (current_offset<NUMBER_OF_ORGS) {
+        setTimeout(arguments.callee,1);
+      }
+    },1);
+    // This prevent page reloading after each ajax call
+    return false;
+  }
+
+  // private function to load a JSON and pushing the data to the
+  // private global variables
+  function loadSingleJSONData(data) {
+    if (data) {
+      // pushing org details
+      for (var org_key in data.data.orgs) {
+        orgs_details[org_key] = data.data.orgs[org_key];
+      }
+      // pushing proposals
+      $(data.data.proposals).each(
+        function(intIndex, proposal) {
+          // if this student_key is not yet present
+          if (assigned_proposals[proposal.student_key]==undefined) {
+            // create the object and insert general info
+            assigned_proposals[proposal.student_key] = {};
+            assigned_proposals[proposal.student_key].name = proposal.student_name;
+            assigned_proposals[proposal.student_key].contact = proposal.student_contact;
+            assigned_proposals[proposal.student_key].proposals = new Array();
+          }
+          // anyway, push the accepted proposals
+          assigned_proposals[proposal.student_key].proposals.push(
+            {
+              "org_key" : proposal.org_key,
+              "proposal_key" : proposal.key_name,
+              "proposal_title": proposal.proposal_title
+            }
+          );
+        }
+      );
+    }
+  }
+
+  // private function to generate the JSON to send for caching and calling
+  // the actual function that will print the data
+  function printDuplicatesAndSendJSON() {
+    // JSON skeleton that need to be sent to the server
+    var to_json = {
+      "data": {
+        "orgs" : orgs_details,
+        "students": {}
+      }
+    }
+    // for every student...
+    for (var student_key in assigned_proposals) {
+      var accepted_proposals = assigned_proposals[student_key].proposals.length;
+      // if accepted proposal are less than 2, then ignore and continue the iteration
+      if (accepted_proposals<2) continue;
+      var student = assigned_proposals[student_key];
+      // push this student to the caching JSON
+      to_json.data.students[student_key] = student;
+      var proposals = student.proposals;
+      // call the function that prints the output html
+      this.showDuplicatesHtml(orgs_details,student,student_key,proposals);
+    }
+    if (html_string=="") {
+      $("#div_duplicate_slots").html("<strong>No duplicate slots found</strong>");
+    }
+    // at the end, send the JSON for caching purposes
+    $.ajax({
+      url: location.href,
+      type: 'POST',
+      processData: true,
+      data: {result: JSON.stringify(to_json)},
+      contentType: 'application/json',
+      dataType: 'json',
+    });
+  }
+
+  // public function to output actual HTML out of the data (cached or not)
+  this.showDuplicatesHtml = function(orgs_details,student,student_key,proposals) {
+    if (html_string==='') {
+      html_string='<ul>';
+    }
+    html_string+= '<li>Student: <strong><a href="/student/show/'+student_key+'">'+student.name+'</a></strong> (<a href="mailto:'+student.contact+'">'+student.contact+'</a>)';
+    html_string+='<ul>';
+    $(proposals).each(
+      function (intIndex, proposal) {
+        html_string+='<li>Organization: <a href="/org/show/'+proposal.org_key+'">'+orgs_details[proposal.org_key].name+'</a>, admin: '+orgs_details[proposal.org_key].admin_name+' (<a href="mailto:'+orgs_details[proposal.org_key].admin_email+'">'+orgs_details[proposal.org_key].admin_email+'</a>)</li>';
+        html_string+='<ul><li>Proposal: <a href="/student_proposal/show/'+proposal.proposal_key+'">'+proposal.proposal_title+'</a></li></ul>';
+      }
+    );
+    html_string+='</ul></li>';
+    html_string+='</ul>';
+    $("#div_duplicate_slots").html(html_string);
+  }
+}
diff -r ed24a0bd19d9 -r 4d9e41c947fd app/soc/templates/soc/base.html
--- a/app/soc/templates/soc/base.html	Tue Mar 24 18:43:22 2009 +0000
+++ b/app/soc/templates/soc/base.html	Tue Mar 24 19:49:35 2009 +0000
@@ -98,6 +98,9 @@
   {% if uses_slot_allocator %}
   <script type="text/javascript" src="/soc/content/js/slot-allocator-090320.js"></script>
   {% endif %}
+  {% if uses_duplicates %}
+  <script type="text/javascript" src="/soc/content/js/duplicate-slots-090324.js"></script>
+  {% endif %}
  </head>
 {% endblock %}
 
diff -r ed24a0bd19d9 -r 4d9e41c947fd app/soc/templates/soc/program/show_duplicates.html
--- a/app/soc/templates/soc/program/show_duplicates.html	Tue Mar 24 18:43:22 2009 +0000
+++ b/app/soc/templates/soc/program/show_duplicates.html	Tue Mar 24 19:49:35 2009 +0000
@@ -19,6 +19,43 @@
 {% endblock %}
 
 {% block body %}
-{{ info }} <br/>
-{{ duplicate_cache_content }}
+<script language="javascript" type="text/javascript">
+  // variables from python context to get eventual cache
+  // number of orgs, offset and url for querying the apps
+  var infos = {{ info|safe }};
+  var cache = {{ duplicate_cache_content|safe }};
+  var offset_length = {{ offset_length }};
+  var number_of_orgs = infos.nr_of_orgs;
+  var url_to_query = infos.program_key;
+  // this global variable will contain the html to output
+  var html_string = '';
+  $(document).ready(function(){
+    // Initialize the progress bar
+    $("#duplicates_progress_bar").progressBar({showText: false});
+    // if there's data in the cache
+    if (cache.data!=undefined) {
+      // then the button will show "recalculate" instead of "calculate"
+      $("#id_button_duplicate_slots").val("Recalculate");
+      // and then we will show the html based on the cache
+      for (var student_key in cache.data.students) {
+        duplicateSlots.showDuplicatesHtml(cache.data.orgs,cache.data.students[student_key],student_key,cache.data.students[student_key].proposals);
+      }
+      // if there's no data in the cache, tell the user
+      if (html_string=="") {
+        $("#div_duplicate_slots").html("<strong>No duplicate slot assignments found</strong>");
+      }
+    }
+    // else if there's no data in the cache
+    else {
+      // then the button will show "calculate"
+      $("#id_button_duplicate_slots").val("Calculate");
+    }
+  });
+</script>
+<input type="button" id="id_button_duplicate_slots" onclick="javascript:duplicateSlots.showDuplicatesInit();" class="button" />
+<span class="progressBar" style="display:none;" id="duplicates_progress_bar"></span>
+<span id="description_progressbar"></span><span id="description_done"></span>
+
+<br /><br />
+<div id="div_duplicate_slots"></div>
 {% endblock %}
diff -r ed24a0bd19d9 -r 4d9e41c947fd app/soc/views/models/program.py
--- a/app/soc/views/models/program.py	Tue Mar 24 18:43:22 2009 +0000
+++ b/app/soc/views/models/program.py	Tue Mar 24 19:49:35 2009 +0000
@@ -380,6 +380,8 @@
 
     context = helper.responses.getUniversalContext(request)
     helper.responses.useJavaScript(context, params['js_uses_all'])
+    context['uses_duplicates'] = True
+    context['uses_json'] = True
     context['page_name'] = page_name
 
     # get all orgs for this program who are active and have slots assigned
@@ -397,6 +399,7 @@
 
     # TODO(ljvderijk) cache the result of the duplicate calculation
     context['duplicate_cache_content'] = simplejson.dumps({})
+    context['offset_length'] = 10
 
     template = 'soc/program/show_duplicates.html'
 
@@ -460,7 +463,6 @@
                 'status': 'accepted'}
 
       query = student_proposal_logic.logic.getQueryForFields(fields)
-      test = query.count()
 
       slots_left_to_assign = max(0, org.slots - query.count())