# HG changeset patch
# User Jittat Fakcharoenphol <jittat@gmail.com>
# Date 2010-01-28 02:05:35
# Node ID 9e664dd718889dcc0adcea5dee55170ccd383922
# Parent  eda4ffd09089b70acbdb2b8fa0c69f88fd3c796e

added timeout related javascripts

diff --git a/app/controllers/main_controller.rb b/app/controllers/main_controller.rb
--- a/app/controllers/main_controller.rb
+++ b/app/controllers/main_controller.rb
@@ -272,6 +272,24 @@
     end
   end
 
+  def prepare_timeout_information(problems)
+    @submission_timeouts = {}
+    problems.each do |problem|
+      assignment = @user.get_recent_test_pair_assignment_for(problem)
+      if assignment == nil
+        timeout = nil
+      else
+        if assignment.expired?
+          timeout = 0
+        else
+          timeout = assignment.created_at + TEST_ASSIGNMENT_EXPIRATION_DURATION - Time.new.gmtime
+        end
+      end
+      @submission_timeouts[problem.id] = timeout
+    end
+    @submission_timeouts.each_pair {|k,v| puts "#{k} => #{v}"}
+  end
+
   def prepare_list_information
     @user = User.find(session[:user_id])
 
@@ -295,6 +313,8 @@
 
     @problems = all_problems.reject { |problem| passed.has_key? problem.id }
 
+    prepare_timeout_information(@problems)
+    
     @prob_submissions = Array.new
     @problems.each do |p|
       if sub_count.has_key? p.id
diff --git a/app/views/main/_problem.html.haml b/app/views/main/_problem.html.haml
--- a/app/views/main/_problem.html.haml
+++ b/app/views/main/_problem.html.haml
@@ -2,7 +2,7 @@
   .problem-form{:id => "problem-form-#{problem.id}"}
     - form_tag({ :action => 'download_input', :id => problem.id }, :method => :post) do
       %b Input:
-      %input{:type => "submit", :value => "Download input"}
+      %input{:type => "submit", :value => "Download input", :onclick => "CodejomTimeout.updateTimeoutAfterDownloadClick(#{problem.id}); return true;"}
       %span{:id => "problem-timing-message-#{problem.id}"}
         = "After downloading, you have #{TEST_ASSIGNMENT_EXPIRATION_DURATION/60} minutes to submit."
     %div{:id => "problem-submission-form-#{problem.id}"}
diff --git a/app/views/main/_submission_timeouts.html.haml b/app/views/main/_submission_timeouts.html.haml
new file mode 100644
--- /dev/null
+++ b/app/views/main/_submission_timeouts.html.haml
@@ -0,0 +1,7 @@
+CodejomTimeout.timeouts = [
+- @submission_timeouts.each_pair do |id, t|
+  - if t!=nil
+    = "{problem: #{id}, timeout: #{t}},"
+  - else
+    = "{problem: #{id}, timeout: null},"
+];
diff --git a/app/views/main/list.html.haml b/app/views/main/list.html.haml
--- a/app/views/main/list.html.haml
+++ b/app/views/main/list.html.haml
@@ -1,6 +1,7 @@
 - content_for :head do
   = javascript_include_tag :defaults
   = javascript_include_tag 'announcement_refresh.js'
+  = javascript_include_tag 'codejom_timeout.js'
 
 = user_title_bar(@user)
 
@@ -28,6 +29,9 @@
 %br{:clear=>'both'}/
 %hr/
 
-:javascript
+%script{:type => "text/javascript"}
   Announcement.registerRefreshEventTimer();
+  = render :partial => 'submission_timeouts'
+  CodejomTimeout.updateProblemMessages();
+  CodejomTimeout.registerRefreshEvent();
 
diff --git a/public/javascripts/codejom_timeout.js b/public/javascripts/codejom_timeout.js
new file mode 100644
--- /dev/null
+++ b/public/javascripts/codejom_timeout.js
@@ -0,0 +1,58 @@
+var CodejomTimeout = {
+
+    timeStarted: null,
+
+    inputDataDuration: 5,  // 5 minutes
+
+    timeouts: [],
+
+    updateProblemMessages: function() {
+	CodejomTimeout.timeouts.each(function(data) {
+	    if(data.timeout==null) {
+		$("problem-submission-form-" + data.problem).hide();
+	    } else if(data.timeout==0) {
+		$("problem-timing-message-" + data.problem).innerHTML = 
+		    "The recent input data is expired.  Please download a new one.  You'll have 5 minute to submit.";
+		$("problem-submission-form-" + data.problem).hide();
+	    } else {
+		$("problem-timing-message-" + data.problem).innerHTML = 
+		    "You have about " + parseInt(data.timeout/60) + " minute(s) and " + parseInt(data.timeout % 60) + " second(s) to submit.";
+		$("problem-submission-form-" + data.problem).show();
+	    }
+	});
+    },
+
+    refreshProblemMessages: function() {
+	var timeElapsed = ((new Date()).getTime() - CodejomTimeout.timeStarted)/1000;
+	// update timeout info
+	CodejomTimeout.timeouts.each(function(data) {
+	    if(data.timeout > timeElapsed) {
+		data.timeout -= timeElapsed;
+	    } else if(data.timeout > 0) {
+		data.timeout = 0;
+	    }
+	});	
+
+	CodejomTimeout.updateProblemMessages();
+	CodejomTimeout.registerRefreshEvent();
+    },
+
+    registerRefreshEvent: function() {
+	CodejomTimeout.timeStarted = (new Date()).getTime(),
+	setTimeout(function () {
+	    CodejomTimeout.refreshProblemMessages();
+	}, 2700);
+    },
+
+    updateTimeoutAfterDownloadClick: function(problem) {
+	CodejomTimeout.timeouts
+	    .filter(function(data) { return data.problem==problem; })
+	    .each(function(data) {
+		if(data.timeout==0 || data.timeout==null) {
+		    // TODO: use value from rails app.
+		    data.timeout = CodejomTimeout.inputDataDuration * 60;  
+		}
+	    });
+	CodejomTimeout.updateProblemMessages();
+    },
+};