diff --git a/api/src/util/VoiceState.ts b/api/src/util/VoiceState.ts
new file mode 100644
index 00000000..07022ec9
--- /dev/null
+++ b/api/src/util/VoiceState.ts
@@ -0,0 +1,54 @@
+import { Channel, ChannelType, DiscordApiErrors, emitEvent, getPermission, VoiceState, VoiceStateUpdateEvent } from "@fosscord/util";
+import { VoiceStateUpdateSchema } from "../schema";
+
+
+//TODO need more testing when community guild and voice stage channel are working
+export async function updateVoiceState(vsuSchema: VoiceStateUpdateSchema, guildId: string, userId: string, targetUserId?: string) {
+ const perms = await getPermission(userId, guildId, vsuSchema.channel_id);
+
+ /*
+ From https://discord.com/developers/docs/resources/guild#modify-current-user-voice-state
+ You must have the MUTE_MEMBERS permission to unsuppress yourself. You can always suppress yourself.
+ You must have the REQUEST_TO_SPEAK permission to request to speak. You can always clear your own request to speak.
+ */
+ if (targetUserId !== undefined || (vsuSchema.suppress !== undefined && !vsuSchema.suppress)) {
+ perms.hasThrow("MUTE_MEMBERS");
+ }
+ if (vsuSchema.request_to_speak_timestamp !== undefined && vsuSchema.request_to_speak_timestamp !== "") {
+ perms.hasThrow("REQUEST_TO_SPEAK")
+ }
+
+ if (!targetUserId) {
+ targetUserId = userId;
+ } else {
+ if (vsuSchema.suppress !== undefined && vsuSchema.suppress)
+ vsuSchema.request_to_speak_timestamp = "" //Need to check if empty string is the right value
+ }
+
+ //TODO assumed that empty string means clean, need to test if it's right
+ let voiceState
+ try {
+ voiceState = await VoiceState.findOneOrFail({
+ guild_id: guildId,
+ channel_id: vsuSchema.channel_id,
+ user_id: targetUserId
+ });
+ } catch (error) {
+ throw DiscordApiErrors.UNKNOWN_VOICE_STATE;
+ }
+
+ voiceState.assign(vsuSchema);
+ const channel = await Channel.findOneOrFail({ guild_id: guildId, id: vsuSchema.channel_id })
+ if (channel.type !== ChannelType.GUILD_STAGE_VOICE) {
+ throw DiscordApiErrors.CANNOT_EXECUTE_ON_THIS_CHANNEL_TYPE;
+ }
+
+ await Promise.all([
+ voiceState.save(),
+ emitEvent({
+ event: "VOICE_STATE_UPDATE",
+ data: voiceState,
+ guild_id: guildId
+ } as VoiceStateUpdateEvent)]);
+ return;
+}
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