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cinny/src/app/utils/roomUpgradeState.ts
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/**
* [Gitea #327] Room state Synapse does NOT copy into the replacement room on
* `POST /rooms/{id}/upgrade` (it carries only power levels, join rules,
* name/topic/avatar, history visibility, guest access, encryption, server ACL
* and space parent/child). Lotus keeps call policy, voice limits, soundboard,
* message retention, role tags and room emoji packs in state, so an upgrade
* silently dropped all of them.
*/
const CARRIED_TYPES = new Set([
'm.room.retention',
'in.cinny.room.power_level_tags',
'im.ponies.room_emotes',
]);
const CARRIED_PREFIXES = ['io.lotus.'];
export type StateToCarry = { type: string; stateKey: string; content: Record<string, unknown> };
export const isCarriedStateType = (type: string): boolean =>
CARRIED_TYPES.has(type) || CARRIED_PREFIXES.some((p) => type.startsWith(p));
/** The state events to re-create in the replacement room (non-empty content only). */
export const stateToCarry = (
events: Array<{
getType: () => string;
getStateKey: () => string | undefined;
getContent: () => Record<string, unknown>;
}>,
): StateToCarry[] =>
events
.filter((ev) => isCarriedStateType(ev.getType()))
.map((ev) => ({
type: ev.getType(),
stateKey: ev.getStateKey() ?? '',
content: ev.getContent(),
}))
.filter((s) => s.content && Object.keys(s.content).length > 0);