package com.peachpasswords.sync

/**
 * Who speaks first in a relay room.
 *
 * The relay is a two-party splice with no buffering and no "peer joined"
 * signal, so exactly one side must open with `PEACH_RECONNECT` and the other
 * must wait for it. Both sides derive the same room id from the shared pair
 * secret, so the role has to be derivable from state both already hold —
 * there is nothing on the wire to negotiate it with.
 *
 * The lower long-term public key dials and the higher key waits, independent
 * of device type. Browser service workers keep their waiter WebSocket alive
 * with application liveness frames, so extension-to-extension edges no longer
 * need a native device to act as the permanent listener.
 *
 * The keys are hex of the same length, so an ordinary lexicographic compare is
 * a total order over them. Ties are impossible: two devices sharing a static
 * key are the same device.
 */
internal fun weDialPeer(ourLongTermPublicKeyHex: String, peer: PairedDevice): Boolean {
    val theirs = peer.longTermPublicKeyHex ?: return false
    return ourLongTermPublicKeyHex.compareTo(theirs) < 0
}