out-of-your-element/matrix/power.js

34 lines
1.5 KiB
JavaScript

// @ts-check
const {db, from} = require("../passthrough")
const reg = require("./read-registration")
const ks = require("./kstate")
const {applyKStateDiffToRoom, roomToKState} = require("../d2m/actions/create-room")
// Migrate reg.ooye.invite setting to database
for (const mxid of reg.ooye.invite) {
db.prepare("INSERT OR IGNORE INTO member_power (mxid, room_id, power_level) VALUES (?, ?, 100)").run(mxid, "*")
}
/** Apply global power level requests across ALL rooms where the member cache entry exists but the power level has not been applied yet. */
function _getAffectedRooms() {
return from("member_cache").join("member_power", "mxid")
.and("where member_power.room_id = '*' and member_cache.power_level != member_power.power_level")
.selectUnsafe("mxid", "member_cache.room_id", "member_power.power_level")
.all()
}
async function applyPower() {
const rows = _getAffectedRooms()
for (const row of rows) {
const kstate = await roomToKState(row.room_id)
const diff = ks.diffKState(kstate, {"m.room.power_levels/": {users: {[row.mxid]: row.power_level}}})
await applyKStateDiffToRoom(row.room_id, diff)
// There is a listener on m.room.power_levels to do this same update,
// but we update it here anyway since the homeserver does not always deliver the event round-trip.
db.prepare("UPDATE member_cache SET power_level = ? WHERE room_id = ? AND mxid = ?").run(row.power_level, row.room_id, row.mxid)
}
}
module.exports._getAffectedRooms = _getAffectedRooms
module.exports.applyPower = applyPower