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// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Controls a section of the overview page in the message drawer.
*
* @module core_message/message_drawer_view_overview_section
* @copyright 2018 Ryan Wyllie <ryan@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
define(
[
'jquery',
'core/custom_interaction_events',
'core/notification',
'core/pubsub',
'core/str',
'core/pending',
'core/templates',
'core/user_date',
'core_message/message_repository',
'core_message/message_drawer_events',
'core_message/message_drawer_router',
'core_message/message_drawer_routes',
'core_message/message_drawer_lazy_load_list',
'core_message/message_drawer_view_conversation_constants'
],
function(
$,
CustomEvents,
Notification,
PubSub,
Str,
Pending,
Templates,
UserDate,
MessageRepository,
MessageDrawerEvents,
MessageDrawerRouter,
MessageDrawerRoutes,
LazyLoadList,
MessageDrawerViewConversationContants
) {
var SELECTORS = {
TOGGLE: '[data-region="toggle"]',
CONVERSATION: '[data-conversation-id]',
BLOCKED_ICON_CONTAINER: '[data-region="contact-icon-blocked"]',
LAST_MESSAGE: '[data-region="last-message"]',
LAST_MESSAGE_DATE: '[data-region="last-message-date"]',
MUTED_ICON_CONTAINER: '[data-region="muted-icon-container"]',
UNREAD_COUNT: '[data-region="unread-count"]',
SECTION_TOTAL_COUNT: '[data-region="section-total-count"]',
SECTION_TOTAL_COUNT_CONTAINER: '[data-region="section-total-count-container"]',
SECTION_UNREAD_COUNT: '[data-region="section-unread-count"]',
PLACEHOLDER_CONTAINER: '[data-region="placeholder-container"]'
};
var TEMPLATES = {
CONVERSATIONS_LIST: 'core_message/message_drawer_conversations_list',
CONVERSATIONS_LIST_ITEMS_PLACEHOLDER: 'core_message/message_drawer_conversations_list_items_placeholder'
};
var LOAD_LIMIT = 50;
var loadedConversationsById = {};
var deletedConversationsById = {};
var loadedTotalCounts = false;
var loadedUnreadCounts = false;
/**
* Get the section visibility status.
*
* @param {Object} root The section container element.
* @return {Bool} Is section visible.
*/
var isVisible = function(root) {
return LazyLoadList.getRoot(root).hasClass('show');
};
/**
* Set this section as expanded.
*
* @param {Object} root The section container element.
*/
var setExpanded = function(root) {
root.addClass('expanded');
};
/**
* Set this section as collapsed.
*
* @param {Object} root The section container element.
*/
var setCollapsed = function(root) {
root.removeClass('expanded');
};
/**
* Render the total count value and show it for the user. Also update the placeholder
* HTML for better visuals.
*
* @param {Object} root The section container element.
* @param {Number} count The total count
*/
var renderTotalCount = function(root, count) {
var container = root.find(SELECTORS.SECTION_TOTAL_COUNT_CONTAINER);
var countElement = container.find(SELECTORS.SECTION_TOTAL_COUNT);
countElement.text(count);
container.removeClass('hidden');
Str.get_string('totalconversations', 'core_message', count).done(function(string) {
container.attr('aria-label', string);
});
var numPlaceholders = count > 20 ? 20 : count;
// Array of "true" up to the number of placeholders we want.
var placeholders = Array.apply(null, Array(numPlaceholders)).map(function() {
return true;
});
// Replace the current placeholder (loading spinner) with some nicer placeholders that
// better represent the content.
Templates.render(TEMPLATES.CONVERSATIONS_LIST_ITEMS_PLACEHOLDER, {placeholders: placeholders})
.then(function(html) {
var placeholderContainer = root.find(SELECTORS.PLACEHOLDER_CONTAINER);
placeholderContainer.html(html);
return;
})
.catch(function() {
// Silently ignore. Doesn't matter if we can't render the placeholders.
});
};
/**
* Render the unread count value and show it for the user if it's higher than zero.
*
* @param {Object} root The section container element.
* @param {Number} count The unread count
*/
var renderUnreadCount = function(root, count) {
var countElement = root.find(SELECTORS.SECTION_UNREAD_COUNT);
countElement.text(count);
Str.get_string('unreadconversations', 'core_message', count).done(function(string) {
countElement.attr('aria-label', string);
});
if (count > 0) {
countElement.removeClass('hidden');
}
};
/**
* Create a formatted conversation object from the the one we get from events. The new object
* will be in a format that matches what we receive from the server.
*
* @param {Object} conversation
* @return {Object} formatted conversation.
*/
var formatConversationFromEvent = function(conversation) {
// Recursively lowercase all of the keys for an object.
var recursivelyLowercaseKeys = function(object) {
return Object.keys(object).reduce(function(carry, key) {
if ($.isArray(object[key])) {
carry[key.toLowerCase()] = object[key].map(recursivelyLowercaseKeys);
} else {
carry[key.toLowerCase()] = object[key];
}
return carry;
}, {});
};
// Recursively lowercase all of the keys for the conversation.
var formatted = recursivelyLowercaseKeys(conversation);
// Make sure all messages have the useridfrom property set.
formatted.messages = formatted.messages.map(function(message) {
message.useridfrom = message.userfrom.id;
return message;
});
return formatted;
};
/**
* Render the messages in the overview page.
*
* @param {Array} conversations List of conversations to render.
* @param {Number} userId Logged in user id.
* @return {Object} jQuery promise.
*/
var render = function(conversations, userId) {
// Helper to format the last message for rendering.
// Returns a promise which resolves to either a string, or null
// (such as in the event of an empty personal space).
var pending = new Pending();
var formatMessagePreview = async function(lastMessage) {
if (!lastMessage) {
return null;
}
// Check the message html for a src attribute, indicative of media.
// Replace <img with <noimg to stop browsers pre-fetching the image as part of tmp element creation.
var tmpElement = document.createElement("element");
tmpElement.innerHTML = lastMessage.text.replace(/<img /g, '<noimg ');
var isMedia = tmpElement.querySelector("[src]") || false;
if (!isMedia) {
// Try to get the text value of the content.
// If that's not possible, we'll report it under the catch-all 'other media'.
var messagePreview = $(lastMessage.text).text();
if (messagePreview) {
// The text value of the message must have no html/script tags.
if (messagePreview.indexOf('<') == -1) {
return messagePreview;
}
}
}
// As a fallback, report unknowns as 'other media' type content.
var pix = 'i/messagecontentmultimediageneral';
var label = 'messagecontentmultimediageneral';
if (lastMessage.text.includes('<img')) {
pix = 'i/messagecontentimage';
label = 'messagecontentimage';
} else if (lastMessage.text.includes('<video')) {
pix = 'i/messagecontentvideo';
label = 'messagecontentvideo';
} else if (lastMessage.text.includes('<audio')) {
pix = 'i/messagecontentaudio';
label = 'messagecontentaudio';
}
try {
var labelString = await Str.get_string(label, 'core_message');
var icon = await Templates.renderPix(pix, 'core', labelString);
return icon + ' ' + labelString;
} catch (error) {
Notification.exception(error);
return null;
}
};
var mapPromises = conversations.map(function(conversation) {
var lastMessage = conversation.messages.length ? conversation.messages[conversation.messages.length - 1] : null;
return formatMessagePreview(lastMessage)
.then(function(messagePreview) {
var formattedConversation = {
id: conversation.id,
imageurl: conversation.imageurl,
name: conversation.name,
subname: conversation.subname,
unreadcount: conversation.unreadcount,
ismuted: conversation.ismuted,
lastmessagedate: lastMessage ? lastMessage.timecreated : null,
sentfromcurrentuser: lastMessage ? lastMessage.useridfrom == userId : null,
lastmessage: messagePreview
};
var otherUser = null;
if (conversation.type == MessageDrawerViewConversationContants.CONVERSATION_TYPES.SELF) {
// Self-conversations have only one member.
otherUser = conversation.members[0];
} else if (conversation.type == MessageDrawerViewConversationContants.CONVERSATION_TYPES.PRIVATE) {
// For private conversations, remove the current userId from the members to get the other user.
otherUser = conversation.members.reduce(function(carry, member) {
if (!carry && member.id != userId) {
carry = member;
}
return carry;
}, null);
}
if (otherUser !== null) {
formattedConversation.userid = otherUser.id;
formattedConversation.showonlinestatus = otherUser.showonlinestatus;
formattedConversation.isonline = otherUser.isonline;
formattedConversation.isblocked = otherUser.isblocked;
}
if (conversation.type == MessageDrawerViewConversationContants.CONVERSATION_TYPES.PUBLIC) {
formattedConversation.lastsendername = conversation.members.reduce(function(carry, member) {
if (!carry && lastMessage && member.id == lastMessage.useridfrom) {
carry = member.fullname;
}
return carry;
}, null);
}
return formattedConversation;
}).catch(Notification.exception);
});
return Promise.all(mapPromises)
.then(function(formattedConversations) {
formattedConversations.forEach(function(conversation) {
if (new Date().toDateString() == new Date(conversation.lastmessagedate * 1000).toDateString()) {
conversation.istoday = true;
}
});
return Templates.render(TEMPLATES.CONVERSATIONS_LIST, {conversations: formattedConversations});
}).then(function(html, js) {
pending.resolve();
return $.Deferred().resolve(html, js);
}).catch(function(error) {
pending.resolve();
Notification.exception(error);
});
};
/**
* Build the callback to load conversations.
*
* @param {Array|null} types The conversation types for this section.
* @param {bool} includeFavourites Include/exclude favourites.
* @param {Number} offset Result offset
* @return {Function}
*/
var getLoadCallback = function(types, includeFavourites, offset) {
// Note: This function is a bit messy because we've added the concept of loading
// multiple conversations types (e.g. private + self) at once but haven't properly
// updated the web service to accept an array of types. Instead we've added a new
// parameter for the self type which means we can only ever load self + other type.
// This should be improved to make it more extensible in the future. Adding new params
// for each type isn't very scalable.
var type = null;
// Include self conversations in the results by default.
var includeSelfConversations = true;
if (types && types.length) {
// Just get the conversation types that aren't "self" for now.
var nonSelfConversationTypes = types.filter(function(candidate) {
return candidate != MessageDrawerViewConversationContants.CONVERSATION_TYPES.SELF;
});
// If we're specifically asking for a list of types that doesn't include the self
// conversations then we don't need to include them.
includeSelfConversations = types.length != nonSelfConversationTypes.length;
// As mentioned above the webservice is currently limited to loading one type at a
// time (plus self conversations) so let's hope we never change this.
type = nonSelfConversationTypes[0];
}
return function(root, userId) {
return MessageRepository.getConversations(
userId,
type,
LOAD_LIMIT + 1,
offset,
includeFavourites,
includeSelfConversations
)
.then(function(response) {
var conversations = response.conversations;
if (conversations.length > LOAD_LIMIT) {
conversations = conversations.slice(0, -1);
} else {
LazyLoadList.setLoadedAll(root, true);
}
offset = offset + LOAD_LIMIT;
conversations.forEach(function(conversation) {
loadedConversationsById[conversation.id] = conversation;
});
return conversations;
})
.catch(Notification.exception);
};
};
/**
* Get the total count container element.
*
* @param {Object} root Overview messages container element.
* @return {Object} Total count container element.
*/
var getTotalConversationCountElement = function(root) {
return root.find(SELECTORS.SECTION_TOTAL_COUNT);
};
/**
* Get the unread conversations count container element.
*
* @param {Object} root Overview messages container element.
* @return {Object} Unread conversations count container element.
*/
var getTotalUnreadConversationCountElement = function(root) {
return root.find(SELECTORS.SECTION_UNREAD_COUNT);
};
/**
* Increment the total conversations count.
*
* @param {Object} root Overview messages container element.
*/
var incrementTotalConversationCount = function(root) {
if (loadedTotalCounts) {
var element = getTotalConversationCountElement(root);
var count = parseInt(element.text());
count = count + 1;
element.text(count);
}
};
/**
* Decrement the total conversations count.
*
* @param {Object} root Overview messages container element.
*/
var decrementTotalConversationCount = function(root) {
if (loadedTotalCounts) {
var element = getTotalConversationCountElement(root);
var count = parseInt(element.text());
count = count - 1;
element.text(count);
}
};
/**
* Decrement the total unread conversations count.
*
* @param {Object} root Overview messages container element.
*/
var decrementTotalUnreadConversationCount = function(root) {
if (loadedUnreadCounts) {
var element = getTotalUnreadConversationCountElement(root);
var count = parseInt(element.text());
count = count - 1;
element.text(count);
if (count < 1) {
element.addClass('hidden');
}
}
};
/**
* Get a contact / conversation element.
*
* @param {Object} root Overview messages container element.
* @param {Number} conversationId The conversation id.
* @return {Object} Conversation element.
*/
var getConversationElement = function(root, conversationId) {
return root.find('[data-conversation-id="' + conversationId + '"]');
};
/**
* Get a contact / conversation element from a user id.
*
* @param {Object} root Overview messages container element.
* @param {Number} userId The user id.
* @return {Object} Conversation element.
*/
var getConversationElementFromUserId = function(root, userId) {
return root.find('[data-user-id="' + userId + '"]');
};
/**
* Show the conversation is muted icon.
*
* @param {Object} conversationElement The conversation element.
*/
var muteConversation = function(conversationElement) {
conversationElement.find(SELECTORS.MUTED_ICON_CONTAINER).removeClass('hidden');
};
/**
* Hide the conversation is muted icon.
*
* @param {Object} conversationElement The conversation element.
*/
var unmuteConversation = function(conversationElement) {
conversationElement.find(SELECTORS.MUTED_ICON_CONTAINER).addClass('hidden');
};
/**
* Show the contact is blocked icon.
*
* @param {Object} conversationElement The conversation element.
*/
var blockContact = function(conversationElement) {
conversationElement.find(SELECTORS.BLOCKED_ICON_CONTAINER).removeClass('hidden');
};
/**
* Hide the contact is blocked icon.
*
* @param {Object} conversationElement The conversation element.
*/
var unblockContact = function(conversationElement) {
conversationElement.find(SELECTORS.BLOCKED_ICON_CONTAINER).addClass('hidden');
};
/**
* Create an render new conversation element in the list of conversations.
*
* @param {Object} root Overview messages container element.
* @param {Object} conversation The conversation.
* @param {Number} userId The logged in user id.
* @return {Object} jQuery promise
*/
var createNewConversationFromEvent = function(root, conversation, userId) {
var existingConversations = root.find(SELECTORS.CONVERSATION);
if (!existingConversations.length) {
// If we didn't have any conversations then we need to show
// the content of the list and hide the empty message.
var listRoot = LazyLoadList.getRoot(root);
LazyLoadList.showContent(listRoot);
LazyLoadList.hideEmptyMessage(listRoot);
}
// Cache the conversation.
loadedConversationsById[conversation.id] = conversation;
return render([conversation], userId)
.then(function(html) {
var contentContainer = LazyLoadList.getContentContainer(root);
return contentContainer.prepend(html);
})
.then(function() {
return incrementTotalConversationCount(root);
})
.catch(Notification.exception);
};
/**
* Delete a conversation from the list of conversations.
*
* @param {Object} root Overview messages container element.
* @param {Object} conversationElement The conversation element.
*/
var deleteConversation = function(root, conversationElement) {
conversationElement.remove();
decrementTotalConversationCount(root);
var conversations = root.find(SELECTORS.CONVERSATION);
if (!conversations.length) {
// If we don't have any conversations then we need to hide
// the content of the list and show the empty message.
var listRoot = LazyLoadList.getRoot(root);
LazyLoadList.hideContent(listRoot);
LazyLoadList.showEmptyMessage(listRoot);
}
};
/**
* Mark a conversation as read.
*
* @param {Object} root Overview messages container element.
* @param {Object} conversationElement The conversation element.
*/
var markConversationAsRead = function(root, conversationElement) {
var unreadCount = conversationElement.find(SELECTORS.UNREAD_COUNT);
unreadCount.text('0');
unreadCount.addClass('hidden');
decrementTotalUnreadConversationCount(root);
};
/**
* Listen to, and handle events in this section.
*
* @param {String} namespace Unique identifier for the Routes
* @param {Object} root The section container element.
* @param {Function} loadCallback The callback to load items.
* @param {Array|null} types The conversation types for this section
* @param {bool} includeFavourites If this section includes favourites
* @param {String} fromPanel Routing argument to send if the section is loaded in message index left panel.
*/
var registerEventListeners = function(namespace, root, loadCallback, types, includeFavourites, fromPanel) {
var listRoot = LazyLoadList.getRoot(root);
var conversationBelongsToThisSection = function(conversation) {
// Make sure the type is an int so that the index of check matches correctly.
var conversationType = parseInt(conversation.type, 10);
if (
// If the conversation type isn't one this section cares about then we can ignore it.
(types && types.indexOf(conversationType) < 0) ||
// If this is the favourites section and the conversation isn't a favourite then ignore it.
(includeFavourites && !conversation.isFavourite) ||
// If this section doesn't include favourites and the conversation is a favourite then ignore it.
(!includeFavourites && conversation.isFavourite)
) {
return false;
}
return true;
};
// Set the minimum height of the section to the height of the toggle. This
// smooths out the collapse animation.
var toggle = root.find(SELECTORS.TOGGLE);
root.css('min-height', toggle.outerHeight());
root.on('show.bs.collapse', function() {
setExpanded(root);
LazyLoadList.show(listRoot, loadCallback, function(contentContainer, conversations, userId) {
return render(conversations, userId)
.then(function(html) {
contentContainer.append(html);
return html;
})
.catch(Notification.exception);
});
});
root.on('hidden.bs.collapse', function() {
setCollapsed(root);
});
PubSub.subscribe(MessageDrawerEvents.CONTACT_BLOCKED, function(userId) {
var conversationElement = getConversationElementFromUserId(root, userId);
if (conversationElement.length) {
blockContact(conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONTACT_UNBLOCKED, function(userId) {
var conversationElement = getConversationElementFromUserId(root, userId);
if (conversationElement.length) {
unblockContact(conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_SET_MUTED, function(conversation) {
var conversationId = conversation.id;
var conversationElement = getConversationElement(root, conversationId);
if (conversationElement.length) {
muteConversation(conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_UNSET_MUTED, function(conversation) {
var conversationId = conversation.id;
var conversationElement = getConversationElement(root, conversationId);
if (conversationElement.length) {
unmuteConversation(conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_NEW_LAST_MESSAGE, function(conversation) {
if (!conversationBelongsToThisSection(conversation)) {
return;
}
var pendingPromise = new Pending('core_message/message_drawer_view_overview_section:new');
var loggedInUserId = conversation.loggedInUserId;
var conversationId = conversation.id;
var element = getConversationElement(root, conversationId);
conversation = formatConversationFromEvent(conversation);
if (element.length) {
var contentContainer = LazyLoadList.getContentContainer(root);
render([conversation], loggedInUserId)
.then(function(html) {
if (deletedConversationsById[conversationId]) {
// This conversation was deleted at some point since the messaging drawer was created.
if (conversation.messages[0].timeadded < deletedConversationsById[conversationId]) {
// The 'new' message was added before the conversation was deleted.
// This is probably stale data.
return;
}
}
contentContainer.prepend(html);
element.remove();
return;
})
.then(pendingPromise.resolve)
.catch(Notification.exception);
} else if (conversation.messages.length) {
createNewConversationFromEvent(root, conversation, loggedInUserId)
.then(pendingPromise.resolve)
.catch();
} else {
pendingPromise.resolve();
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_DELETED, function(conversationId) {
var conversationElement = getConversationElement(root, conversationId);
delete loadedConversationsById[conversationId];
deletedConversationsById[conversationId] = new Date();
if (conversationElement.length) {
deleteConversation(root, conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_READ, function(conversationId) {
var conversationElement = getConversationElement(root, conversationId);
if (conversationElement.length) {
markConversationAsRead(root, conversationElement);
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_SET_FAVOURITE, function(conversation) {
var conversationElement = null;
if (conversationBelongsToThisSection(conversation)) {
conversationElement = getConversationElement(root, conversation.id);
if (!conversationElement.length) {
createNewConversationFromEvent(
root,
formatConversationFromEvent(conversation),
conversation.loggedInUserId
);
}
} else {
conversationElement = getConversationElement(root, conversation.id);
if (conversationElement.length) {
deleteConversation(root, conversationElement);
}
}
});
PubSub.subscribe(MessageDrawerEvents.CONVERSATION_UNSET_FAVOURITE, function(conversation) {
var conversationElement = null;
if (conversationBelongsToThisSection(conversation)) {
conversationElement = getConversationElement(root, conversation.id);
if (!conversationElement.length) {
createNewConversationFromEvent(
root,
formatConversationFromEvent(conversation),
conversation.loggedInUserId
);
}
} else {
conversationElement = getConversationElement(root, conversation.id);
if (conversationElement.length) {
deleteConversation(root, conversationElement);
}
}
});
CustomEvents.define(root, [CustomEvents.events.activate]);
root.on(CustomEvents.events.activate, SELECTORS.CONVERSATION, function(e, data) {
var conversationElement = $(e.target).closest(SELECTORS.CONVERSATION);
var conversationId = conversationElement.attr('data-conversation-id');
var conversation = loadedConversationsById[conversationId];
MessageDrawerRouter.go(namespace, MessageDrawerRoutes.VIEW_CONVERSATION, conversation, fromPanel);
data.originalEvent.preventDefault();
});
};
/**
* Setup the section.
*
* @param {String} namespace Unique identifier for the Routes
* @param {Object} header The header container element.
* @param {Object} body The section container element.
* @param {Object} footer The footer container element.
* @param {Array} types The conversation types that show in this section
* @param {bool} includeFavourites If this section includes favourites
* @param {Object} totalCountPromise Resolves wth the total conversations count
* @param {Object} unreadCountPromise Resolves wth the unread conversations count
* @param {bool} fromPanel shown in message app panel.
*/
var show = function(namespace, header, body, footer, types, includeFavourites, totalCountPromise, unreadCountPromise,
fromPanel) {
var root = $(body);
if (!root.attr('data-init')) {
var loadCallback = getLoadCallback(types, includeFavourites, 0);
registerEventListeners(namespace, root, loadCallback, types, includeFavourites, fromPanel);
if (isVisible(root)) {
setExpanded(root);
var listRoot = LazyLoadList.getRoot(root);
LazyLoadList.show(listRoot, loadCallback, function(contentContainer, conversations, userId) {
return render(conversations, userId)
.then(function(html) {
contentContainer.append(html);
return html;
})
.catch(Notification.exception);
});
}
// This is given to us by the calling code because the total counts for all sections
// are loaded in a single ajax request rather than one request per section.
totalCountPromise.then(function(count) {
renderTotalCount(root, count);
loadedTotalCounts = true;
return;
})
.catch(function() {
// Silently ignore if we can't updated the counts. No need to bother the user.
});
// This is given to us by the calling code because the unread counts for all sections
// are loaded in a single ajax request rather than one request per section.
unreadCountPromise.then(function(count) {
renderUnreadCount(root, count);
loadedUnreadCounts = true;
return;
})
.catch(function() {
// Silently ignore if we can't updated the counts. No need to bother the user.
});
root.attr('data-init', true);
}
};
return {
show: show,
isVisible: isVisible
};
});