From 9fde9cb6cbb628fb882101385009d3b9387dc33d Mon Sep 17 00:00:00 2001
From: Robert Zorko <robertz@gurucue.com>
Date: Thu, 17 Sep 2015 10:01:28 +0200
Subject: improvments to the state machine (states can now be registered) and
 those improvments are now used for the existing two states (plus some code
 general code cleanup)

---
 js/codeq/login.js | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 js/codeq/login.js

(limited to 'js/codeq/login.js')

diff --git a/js/codeq/login.js b/js/codeq/login.js
new file mode 100644
index 0000000..808d1b3
--- /dev/null
+++ b/js/codeq/login.js
@@ -0,0 +1,112 @@
+/**
+ * Created by robert on 9/17/15.
+ */
+
+(function(){
+    var loginFun = function(){
+        var identifier = $('#problem_group').val().split('/'),
+            problem = $('#problems').val();
+        if (identifier.length < 2) alert('Choose a problem group');
+        else if (!problem) alert('Choose a problem');
+        else {
+            $('#disabled').css('display', '');
+            codeq.comms.login($('#username').val(), $('#password').val())
+                .then(function (data) {
+                    $('#disabled').css('display', 'none');
+                    if (data.code !== 0) throw new Error('Login failed, code: ' + data.code + ', message: ' + data.message);
+                })
+                .then(function () {
+                    return codeq.comms.getProblem(identifier[0], identifier[1], problem);
+                })
+                .then(function (data) {
+                    if (data.code !== 0) throw new Error('Failed to obtain problem data, code: ' + data.code + ', message: ' + data.message);
+                    $('#disabled').css('display', 'none');
+                    switch (identifier[0]) {
+                        case 'prolog':
+                            // TODO: assignment to window for debug only
+                            //$('#screen_login').css('display', 'none');
+                            //$('#screen_prolog').css('display', '');
+                            codeq.globalStateMachine.transition('prolog');
+                            window.phandler = codeq.createPrologHandler(data.data);
+                            break;
+                        case 'python':
+                            // TODO: assignment to window for debug only
+                            //$('#screen_login').css('display', 'none');
+                            //$('#screen_prolog').css('display', '');
+                            codeq.globalStateMachine.transition('prolog');
+                            window.phandler = codeq.createPythonHandler(data.data);
+                            break;
+                        default:
+                            alert('Unknown language: ' + identifier[0]);
+                            break;
+                    }
+                })
+                .fail(function (reason) {
+                    $('#disabled').css('display', 'none');
+                    alert('Login request failed: ' + reason);
+                })
+                .done();
+        }
+    };
+    codeq.globalStateMachine.register('login',{
+        'enter': function(){
+            codeq.comms.connect().then(function () {
+                return codeq.comms.send({'action': 'list_problems'});//currently problem list and the actual login are still in the same state
+            }).then(
+                function success(data) {
+                    var i, groups, group, problems, problem, first_group,
+                        jqGroup = $('#problem_group'),
+                        jqProblems = $('#problems'),
+                        html = [],
+                        mapping = {},
+                        onGroupChange = function () {
+                            var problems = mapping[jqGroup.val()],
+                                html = [],
+                                i, p;
+                            if (problems) {
+                                for (i = 0; i < problems.length; i++) {
+                                    p = problems[i];
+                                    html.push('<option value="', p.identifier, '">', p.name, '</option>\n')
+                                }
+                            }
+                            jqProblems.html(html.join(''));
+                        };
+
+                    if (data && (data.code === 0)) {
+                        $('#disabled').css('display', 'none');
+                        groups = data.problems;
+                        for (i = 0; i < groups.length; i++) {
+                            group = groups[i];
+                            var identifier = group.identifier.language + '/' + group.identifier.group;
+                            var name = group.name.language + ': ' + group.name.group;
+                            html.push('<option value="', identifier, '">', name, '</option>\n');
+                            mapping[identifier] = group.problems;
+                        }
+                        jqGroup.html(html.join(''));
+                        first_group = html[1];
+                        html = null;
+
+                        jqGroup.on('click', onGroupChange);
+                        jqGroup.val(first_group);
+                        onGroupChange();
+
+                        $("#submit").on('click', loginFun);
+                    }
+                    else {
+                        $('#disabled').css('cursor', '');
+                        alert('Obtaining list of problems failed: code=' + data.code + ', reason=' + data.message);
+                    }
+                },
+
+                function failure(reason) {
+                    $('#disabled').css('cursor', '');
+                    alert('Request to obtain list of problems failed: ' + reason);
+                }
+            ).done();
+        },
+        'exit' : function(){
+            $("#submit").off('click', loginFun);
+            $("#screen_login").css('display', 'none');
+        }
+    });
+})();
\ No newline at end of file
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