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define(['jquery', 'underscore', 'Bacon', 'view/selection'],
function($, _, Bacon, selection) {
var MINUTE_IN_MSEC = 60000;
var incomingActivityBus = new Bacon.Bus(),
activity_element,
graph_view_element,
graph_view,
graph,
activities = [];
function is_topo(diff)
{
return diff['link_id_set_rm'] !== undefined && diff['node_set_add'] !== undefined,
diff['node_id_set_rm'] !== undefined && diff['link_set_add'] !== undefined;
}
function is_attr(diff)
{
return diff['__type_node'] !== undefined && diff['__type_link'] !== undefined;
}
function node_ids_from_diff(diff)
{
return is_attr(diff) ? _.keys(diff['__type_node']) : _.pluck(diff.node_set_add, 'id');
}
function link_ids_from_diff(diff)
{
return is_attr(diff) ? _.keys(diff['__type_link']) : _.pluck(diff.link_set_add, 'id');
}
function topo_explanation(diff)
{
var nodes_added = _.pluck(diff.node_set_add, 'name'),
links_added = _.pluck(diff.link_set_add, 'name');
return (nodes_added.length > 0 ? 'added ' + nodes_added.join(' ') + ' nodes' : '') +
(nodes_added.length > 0 && links_added.length > 0 ? ', ' : '') +
(links_added.length > 0 ? 'added ' + links_added.join(' ') + ' links' : '');
}
function attr_explanation(diff)
{
//var nodes_changed = _.map(diff.__type_node0
var nodes_changed,
links_changed;
function collect(root, find) {
return _.map(_.keys(root), function (id) {
var writes = root[id].__attr_write,
ret = [];
_.each(_.keys(writes), function (key) {
var val = writes[key];
if (key === 'name') {
ret.push('renamed to ' + val)
} else {
ret.push(key + ' changed to ' + val);
}
});
_.map(root[id].__attr_remove, function (id) {
ret.push(id + ' removed');
});
return find(id).name + ': ' + ret.join(', '); /* TODO: use the previous name of the node, not the new name */
});
}
nodes_changed = collect(diff.__type_node, graph.find_node__by_id);
links_changed = collect(diff.__type_link, graph.find_link__by_id);
return (nodes_changed.concat(links_changed)).join(';');
}
function explanation_from_diff(diff)
{
if (is_topo(diff)) {
return topo_explanation(diff);
}
if (is_attr(diff)) {
return attr_explanation(diff);
}
}
function time_diff(old_date, new_date)
{
var delta = Math.floor((new_date - old_date) / 1000.0),
seconds = Math.floor(delta % 60),
minutes = Math.floor((delta / 60) % 60),
hours = Math.floor((delta / 3600) % 24),
days = Math.floor((delta / 86400));
if (delta < 60) {
return 'less than a minute ago'
}
if (delta < 3600) {
return '' + minutes + ' minutes ago';
}
if (delta < 86400) {
return '' + hours + ' hours ago';
}
return '' + days + ' days ago';
}
function make_time_ago_div(creation_date, now)
{
return
}
function Activity(diff)
{
var meta = diff.meta || {},
new_div = $('<div class="activity-div"></div>'),
activity = this,
affected_node_ids = node_ids_from_diff(diff),
affected_link_ids = link_ids_from_diff(diff),
author = meta.author || 'Anonymous',
sentence = meta.sentence,
explanation = (sentence !== undefined && sentence.length > 0) ? sentence : explanation_from_diff(diff);
this.div = new_div;
if (is_topo(diff)) {
new_div[0].classList.add('topo-diff');
}
if (is_attr(diff)) {
new_div[0].classList.add('attr-diff');
}
this.creation_date = meta.ts_created !== undefined ? new Date(meta.ts_created) : new Date();
this.commit = meta.commit; // [!] unused, should link to permanent url
this.author = author;
this.sentence = sentence;
this.explanation = explanation;
this.diff = diff;
this.affected_node_ids = affected_node_ids;
this.affected_link_ids = affected_link_ids;
this.author_element = $('<span class="activity-div-author">' + author + ": " + '</span>'),
this.explanation_element = $('<span class="activity-div-explanation">' + explanation + " " + '</span>');
this.time_ago_element = $('<span class="activity-div-time-ago"></span>');
new_div.append([this.author_element, this.explanation_element, this.time_ago_element]);
new_div.on('click', function (event) {
var affected_nodes = _.filter(_.map(activity.affected_node_ids, graph.find_node__by_id), null);
(event.shiftKey ? selection.invert_both : selection.select_both)
(affected_nodes, affected_links);
});
new_div.hover(function (e) {
var affected_nodes = _.filter(_.map(activity.affected_node_ids, graph.find_node__by_id), null);
affected_links = _.filter(_.map(activity.affected_link_ids, graph.find_link__by_id), null);
_.each(affected_nodes, graph_view.node__hover__start);
_.each(affected_links, graph_view.link__hover__start);
}, function (e) {
var affected_nodes = _.filter(_.map(activity.affected_node_ids, graph.find_node__by_id), null);
affected_links = _.filter(_.map(activity.affected_link_ids, graph.find_link__by_id), null);
_.each(affected_nodes, graph_view.node__hover__end);
_.each(affected_links, graph_view.link__hover__end);
});
this.update_time_ago_element(new Date());
}
Activity.prototype.update_time_ago_element = function (zero_time) {
this.time_ago_element.text(time_diff(this.creation_date, zero_time));
}
/**
* appendActivity(activity)
*
* [!] should be diff?
*
*/
function appendActivity(diff)
{
var activity = new Activity(diff);
activities.push(activity);
activity_element.prepend(activity.div);
// TODO - only update visible (visible_in / out hooks?)
// TODO - x button
// TODO - user name (requires protocol update?)
}
function update_div_ago(activity)
{
activity.update_time_ago_element(new Date());
}
function update_ago()
{
_.each(activities, update_div_ago);
}
function init(_graph, _graph_view, _graph_view_element)
{
incomingActivityBus.onValue(appendActivity);
activity_element = $('.activity-root-div');
graph_view = _graph_view;
graph = _graph;
setInterval(update_ago, MINUTE_IN_MSEC);
}
return {
init: init,
incomingActivityBus: incomingActivityBus,
};
}); // close define
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