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import {
genVoiceToken,
Payload,
WebSocket,
generateStreamKey,
} from "@spacebar/gateway";
import {
Channel,
Config,
emitEvent,
Member,
Region,
Snowflake,
Stream,
StreamCreateEvent,
StreamCreateSchema,
StreamServerUpdateEvent,
StreamSession,
VoiceState,
VoiceStateUpdateEvent,
} from "@spacebar/util";
import { check } from "./instanceOf";
export async function onStreamCreate(this: WebSocket, data: Payload) {
const startTime = Date.now();
check.call(this, StreamCreateSchema, data.d);
const body = data.d as StreamCreateSchema;
if (body.channel_id.trim().length === 0) return;
// first check if we are in a voice channel already. cannot create a stream if there's no existing voice connection
const voiceState = await VoiceState.findOne({
where: { user_id: this.user_id },
});
if (!voiceState || !voiceState.channel_id) return;
if (body.guild_id) {
voiceState.member = await Member.findOneOrFail({
where: { id: voiceState.user_id, guild_id: voiceState.guild_id },
relations: ["user", "roles"],
});
}
// TODO: permissions check - if it's a guild, check if user is allowed to create stream in this guild
const channel = await Channel.findOne({
where: { id: body.channel_id },
});
if (
!channel ||
(body.type === "guild" && channel.guild_id != body.guild_id)
)
return this.close(4000, "invalid channel");
// TODO: actually apply preferred_region from the event payload
const regions = Config.get().regions;
const guildRegion = regions.available.filter(
(r) => r.id === regions.default,
)[0];
// first make sure theres no other streams for this user that somehow didnt get cleared
await Stream.delete({
owner_id: this.user_id,
});
// create a new entry in db containing the token for authenticating user in stream gateway IDENTIFY
const stream = Stream.create({
id: Snowflake.generate(),
owner_id: this.user_id,
channel_id: body.channel_id,
endpoint: guildRegion.endpoint,
});
await stream.save();
const token = genVoiceToken();
const streamSession = StreamSession.create({
stream_id: stream.id,
user_id: this.user_id,
session_id: this.session_id,
token,
});
await streamSession.save();
const streamKey = generateStreamKey(
body.type,
body.guild_id,
body.channel_id,
this.user_id,
);
await emitEvent({
event: "STREAM_CREATE",
data: {
stream_key: streamKey,
rtc_server_id: stream.id, // for voice connections in guilds it is guild_id, for dm voice calls it seems to be DM channel id, for GoLive streams a generated number
viewer_ids: [],
region: guildRegion.name,
paused: false,
},
user_id: this.user_id,
} as StreamCreateEvent);
await emitEvent({
event: "STREAM_SERVER_UPDATE",
data: {
token: streamSession.token,
stream_key: streamKey,
guild_id: null, // not sure why its always null
endpoint: stream.endpoint,
},
user_id: this.user_id,
} as StreamServerUpdateEvent);
voiceState.self_stream = true;
await voiceState.save();
await emitEvent({
event: "VOICE_STATE_UPDATE",
data: voiceState.toPublicVoiceState(),
guild_id: voiceState.guild_id,
channel_id: voiceState.channel_id,
} as VoiceStateUpdateEvent);
console.log(
`[Gateway] STREAM_CREATE for user ${this.user_id} in channel ${body.channel_id} with stream key ${streamKey} in ${Date.now() - startTime}ms`,
);
}
//stream key:
// guild:${guild_id}:${channel_id}:${user_id}
// call:${channel_id}:${user_id}
|
