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path: root/ui/lib/apiServer.js
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import axios from 'axios';
import { channelsList, logins, messages } from '$lib/store';

export const apiServer = axios.create({
	baseURL: '/api/',
	validateStatus: () => true
});

export async function boot() {
	return apiServer.get('/boot');
}

export async function setup(name, password) {
	return apiServer.post('/setup', { name, password });
}

export async function logIn(name, password) {
	return apiServer.post('/auth/login', { name, password });
}

export async function logOut() {
	return apiServer.post('/auth/logout', {});
}

export async function changePassword(password, to) {
	return apiServer.post('/password', { password, to });
}

export async function createChannel(name) {
	return apiServer.post('/channels', { name });
}

export async function postToChannel(channelId, body) {
	return apiServer.post(`/channels/${channelId}`, { body });
}

export async function createInvite() {
	return apiServer.post(`/invite`, {});
}

export async function getInvite(inviteId) {
	return apiServer.get(`/invite/${inviteId}`);
}

export async function acceptInvite(inviteId, username, password) {
	const data = {
		name: username,
		password
	};
	return apiServer.post(`/invite/${inviteId}`, data);
}

export function subscribeToEvents(resume_point) {
	const eventsUrl = new URL('/api/events', window.location);
	eventsUrl.searchParams.append('resume_point', resume_point);
	const evtSource = new EventSource(eventsUrl.toString());
	// TODO: this should process all incoming events and store them.
	// TODO: eventually we'll need to handle expiring old info, so as not to use
	//       infinite browser memory.
	/*
	 * Known message types as of now:
	 * - created: a channel is created.
	 *   - action: ignore.
	 * - message: a message is created.
	 *   - action: display message in channel.
	 * - message_deleted: a message is deleted.
	 *   - action: replace message with <...>.
	 * - deleted: a channel is deleted.
	 *   - action: remove channel from sidebar.
	 */
	evtSource.onmessage = (evt) => {
		const data = JSON.parse(evt.data);

		switch (data.type) {
			case 'login':
				onLoginEvent(data);
				break;
			case 'channel':
				onChannelEvent(data);
				break;
			case 'message':
				onMessageEvent(data);
				break;
		}
	};

	return evtSource;
}

function onLoginEvent(data) {
	switch (data.event) {
		case 'created':
			logins.update((value) => value.addLogin(data.id, data.name));
			break;
	}
}

function onChannelEvent(data) {
	switch (data.event) {
		case 'created':
			channelsList.update((value) => value.addChannel(data.id, data.name));
			break;
		case 'deleted':
			channelsList.update((value) => value.deleteChannel(data.id));
			messages.update((value) => value.deleteChannel(data.id));
			break;
	}
}

function onMessageEvent(data) {
	switch (data.event) {
		case 'sent':
			messages.update((value) =>
				value.addMessage(data.channel, data.id, data.at, data.sender, data.body)
			);
			break;
		case 'deleted':
			messages.update((value) => value.deleteMessage(data.id));
			break;
	}
}