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This is a combined work of Martin Brennan, Loïc Guitaut, and Joffrey Jaffeux. --- This commit implements a base service object when working in chat. The documentation is available at https://discourse.github.io/discourse/chat/backend/Chat/Service.html Generating documentation has been made as part of this commit with a bigger goal in mind of generally making it easier to dive into the chat project. Working with services generally involves 3 parts: - The service object itself, which is a series of steps where few of them are specialized (model, transaction, policy) ```ruby class UpdateAge include Chat::Service::Base model :user, :fetch_user policy :can_see_user contract step :update_age class Contract attribute :age, :integer end def fetch_user(user_id:, **) User.find_by(id: user_id) end def can_see_user(guardian:, **) guardian.can_see_user(user) end def update_age(age:, **) user.update!(age: age) end end ``` - The `with_service` controller helper, handling success and failure of the service within a service and making easy to return proper response to it from the controller ```ruby def update with_service(UpdateAge) do on_success { render_serialized(result.user, BasicUserSerializer, root: "user") } end end ``` - Rspec matchers and steps inspector, improving the dev experience while creating specs for a service ```ruby RSpec.describe(UpdateAge) do subject(:result) do described_class.call(guardian: guardian, user_id: user.id, age: age) end fab!(:user) { Fabricate(:user) } fab!(:current_user) { Fabricate(:admin) } let(:guardian) { Guardian.new(current_user) } let(:age) { 1 } it { expect(user.reload.age).to eq(age) } end ``` Note in case of unexpected failure in your spec, the output will give all the relevant information: ``` 1) UpdateAge when no channel_id is given is expected to fail to find a model named 'user' Failure/Error: it { is_expected.to fail_to_find_a_model(:user) } Expected model 'foo' (key: 'result.model.user') was not found in the result object. [1/4] [model] 'user' ❌ [2/4] [policy] 'can_see_user' [3/4] [contract] 'default' [4/4] [step] 'update_age' /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/update_age.rb:32:in `fetch_user': missing keyword: :user_id (ArgumentError) from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:202:in `instance_exec' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:202:in `call' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:219:in `call' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:417:in `block in run!' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:417:in `each' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:417:in `run!' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:411:in `run' from <internal:kernel>:90:in `tap' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/app/services/base.rb:302:in `call' from /Users/joffreyjaffeux/Code/pr-discourse/plugins/chat/spec/services/update_age_spec.rb:15:in `block (3 levels) in <main>' ```
326 lines
13 KiB
HTML
326 lines
13 KiB
HTML
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<title>Discourse: services/chat-api.js</title>
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<h1>
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Discourse
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<ul><li class="nav-heading">Classes</li><li class="nav-heading"><span class="nav-item-type type-class" title="class">C</span><span class="nav-item-name is-class"><a href="PluginApi.html">PluginApi</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="PluginApi.html#decorateChatMessage">decorateChatMessage</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="PluginApi.html#registerChatComposerButton">registerChatComposerButton</a></span></li><li class="nav-heading"><span class="nav-item-type type-class" title="class">C</span><span class="nav-item-name is-class"><a href="module.exports.html">exports</a></span></li></ul><ul><li class="nav-heading">Modules</li><li class="nav-heading"><span class="nav-item-type type-module" title="module">M</span><span class="nav-item-name is-module"><a href="module-ChatApi.html">ChatApi</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#categoryPermissions">categoryPermissions</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#channel">channel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#channels">channels</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#createChannel">createChannel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#createChannelArchive">createChannelArchive</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#destroyChannel">destroyChannel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#followChannel">followChannel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#listChannelMemberships">listChannelMemberships</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#listCurrentUserChannels">listCurrentUserChannels</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#moveChannelMessages">moveChannelMessages</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#sendMessage">sendMessage</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#unfollowChannel">unfollowChannel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#updateChannel">updateChannel</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#updateChannelStatus">updateChannelStatus</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="module-ChatApi.html#updateCurrentUserChannelNotificationsSettings">updateCurrentUserChannelNotificationsSettings</a></span></li></ul><li class="nav-heading"><a href="global.html">Globals</a></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="global.html#load">load</a></span></li><li class="nav-item"><span class="nav-item-type type-function" title="function">F</span><span class="nav-item-name is-function"><a href="global.html#loadMore">loadMore</a></span></li>
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<main class="layout-main layout-content--source">
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<p class="page-kind">source</p>
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<h1 class="page-title">services/chat-api.js</h1>
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<section>
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<article>
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<pre id="source" class="source-page line-numbers"><code class="language-js">import Service, { inject as service } from "@ember/service";
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import { ajax } from "discourse/lib/ajax";
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import UserChatChannelMembership from "discourse/plugins/chat/discourse/models/user-chat-channel-membership";
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import Collection from "../lib/collection";
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/**
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* Chat API service. Provides methods to interact with the chat API.
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*
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* @module ChatApi
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* @implements {@ember/service}
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*/
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export default class ChatApi extends Service {
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@service chatChannelsManager;
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/**
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* Get a channel by its ID.
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* @param {number} channelId - The ID of the channel.
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* @returns {Promise}
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*
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* @example
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*
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* this.chatApi.channel(1).then(channel => { ... })
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*/
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channel(channelId) {
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return this.#getRequest(`/channels/${channelId}`).then((result) =>
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this.chatChannelsManager.store(result.channel)
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);
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}
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/**
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* List all accessible category channels of the current user.
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* @returns {Collection}
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*
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* @example
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*
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* this.chatApi.channels.then(channels => { ... })
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*/
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channels() {
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return new Collection(`${this.#basePath}/channels`, (response) => {
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return response.channels.map((channel) =>
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this.chatChannelsManager.store(channel)
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);
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});
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}
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/**
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* Moves messages from one channel to another.
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* @param {number} channelId - The ID of the original channel.
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* @param {object} data - Params of the move.
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* @param {Array.<number>} data.message_ids - IDs of the moved messages.
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* @param {number} data.destination_channel_id - ID of the channel where the messages are moved to.
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* @returns {Promise}
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*
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* @example
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*
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* this.chatApi
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* .moveChannelMessages(1, {
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* message_ids: [2, 3],
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* destination_channel_id: 4,
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* }).then(() => { ... })
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*/
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moveChannelMessages(channelId, data = {}) {
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return this.#postRequest(`/channels/${channelId}/messages/moves`, {
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move: data,
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});
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}
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/**
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* Destroys a channel.
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* @param {number} channelId - The ID of the channel.
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* @returns {Promise}
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*
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* @example
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*
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* this.chatApi.destroyChannel(1).then(() => { ... })
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*/
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destroyChannel(channelId) {
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return this.#deleteRequest(`/channels/${channelId}`);
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}
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/**
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* Creates a channel.
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* @param {object} data - Params of the channel.
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* @param {string} data.name - The name of the channel.
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* @param {string} data.chatable_id - The category of the channel.
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* @param {string} data.description - The description of the channel.
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* @param {boolean} [data.auto_join_users] - Should users join this channel automatically.
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* @returns {Promise}
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*
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* @example
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*
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* this.chatApi
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* .createChannel({ name: "foo", chatable_id: 1, description "bar" })
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* .then((channel) => { ... })
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*/
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createChannel(data = {}) {
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return this.#postRequest("/channels", { channel: data }).then((response) =>
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this.chatChannelsManager.store(response.channel)
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);
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}
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/**
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* Lists chat permissions for a category.
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* @param {number} categoryId - ID of the category.
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* @returns {Promise}
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*/
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categoryPermissions(categoryId) {
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return this.#getRequest(`/category-chatables/${categoryId}/permissions`);
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}
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/**
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* Sends a message.
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* @param {number} channelId - ID of the channel.
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* @param {object} data - Params of the message.
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* @param {string} data.message - The raw content of the message in markdown.
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* @param {string} data.cooked - The cooked content of the message.
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* @param {number} [data.in_reply_to_id] - The ID of the replied-to message.
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* @param {number} [data.staged_id] - The staged ID of the message before it was persisted.
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* @param {Array.<number>} [data.upload_ids] - Array of upload ids linked to the message.
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* @returns {Promise}
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*/
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sendMessage(channelId, data = {}) {
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return ajax(`/chat/${channelId}`, {
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ignoreUnsent: false,
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type: "POST",
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data,
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});
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}
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/**
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* Creates a channel archive.
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* @param {number} channelId - The ID of the channel.
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* @param {object} data - Params of the archive.
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* @param {string} data.selection - "new_topic" or "existing_topic".
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* @param {string} [data.title] - Title of the topic when creating a new topic.
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* @param {string} [data.category_id] - ID of the category used when creating a new topic.
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* @param {Array.<string>} [data.tags] - tags used when creating a new topic.
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* @param {string} [data.topic_id] - ID of the topic when using an existing topic.
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* @returns {Promise}
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*/
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createChannelArchive(channelId, data = {}) {
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return this.#postRequest(`/channels/${channelId}/archives`, {
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archive: data,
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});
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}
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/**
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* Updates a channel.
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* @param {number} channelId - The ID of the channel.
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* @param {object} data - Params of the archive.
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* @param {string} [data.description] - Description of the channel.
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* @param {string} [data.name] - Name of the channel.
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* @returns {Promise}
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*/
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updateChannel(channelId, data = {}) {
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return this.#putRequest(`/channels/${channelId}`, { channel: data });
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}
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/**
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* Updates the status of a channel.
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* @param {number} channelId - The ID of the channel.
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* @param {string} status - The new status, can be "open" or "closed".
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* @returns {Promise}
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*/
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updateChannelStatus(channelId, status) {
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return this.#putRequest(`/channels/${channelId}/status`, { status });
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}
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/**
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* Lists members of a channel.
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* @param {number} channelId - The ID of the channel.
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* @returns {Collection}
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*/
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listChannelMemberships(channelId) {
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return new Collection(
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`${this.#basePath}/channels/${channelId}/memberships`,
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(response) => {
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return response.memberships.map((membership) =>
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UserChatChannelMembership.create(membership)
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);
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}
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);
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}
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/**
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* Lists public and direct message channels of the current user.
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* @returns {Promise}
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*/
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listCurrentUserChannels() {
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return this.#getRequest("/channels/me").then((result) => {
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return (result?.channels || []).map((channel) =>
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this.chatChannelsManager.store(channel)
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);
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});
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}
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/**
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* Makes current user follow a channel.
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* @param {number} channelId - The ID of the channel.
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* @returns {Promise}
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*/
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followChannel(channelId) {
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return this.#postRequest(`/channels/${channelId}/memberships/me`).then(
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(result) => UserChatChannelMembership.create(result.membership)
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);
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}
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/**
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* Makes current user unfollow a channel.
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* @param {number} channelId - The ID of the channel.
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* @returns {Promise}
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*/
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unfollowChannel(channelId) {
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return this.#deleteRequest(`/channels/${channelId}/memberships/me`).then(
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(result) => UserChatChannelMembership.create(result.membership)
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);
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}
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/**
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* Update notifications settings of current user for a channel.
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* @param {number} channelId - The ID of the channel.
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* @param {object} data - The settings to modify.
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* @param {boolean} [data.muted] - Mutes the channel.
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* @param {string} [data.desktop_notification_level] - Notifications level on desktop: never, mention or always.
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* @param {string} [data.mobile_notification_level] - Notifications level on mobile: never, mention or always.
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* @returns {Promise}
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*/
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updateCurrentUserChannelNotificationsSettings(channelId, data = {}) {
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return this.#putRequest(
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`/channels/${channelId}/notifications-settings/me`,
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{ notifications_settings: data }
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);
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}
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get #basePath() {
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return "/chat/api";
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}
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#getRequest(endpoint, data = {}) {
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return ajax(`${this.#basePath}${endpoint}`, {
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type: "GET",
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data,
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});
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}
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#putRequest(endpoint, data = {}) {
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return ajax(`${this.#basePath}${endpoint}`, {
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type: "PUT",
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data,
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});
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}
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#postRequest(endpoint, data = {}) {
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return ajax(`${this.#basePath}${endpoint}`, {
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type: "POST",
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data,
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});
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}
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#deleteRequest(endpoint, data = {}) {
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return ajax(`${this.#basePath}${endpoint}`, {
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type: "DELETE",
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data,
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});
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}
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}
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</code></pre>
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</article>
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</section>
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