royalties.gno

 1package core
 2
 3import (
 4	"chain"
 5	"chain/banker"
 6
 7	"gno.land/p/g1pq6pxhgxk2uw5shg5le6glfydpxcu74k0zh069/sinopia/safe/v1"
 8)
 9
10// Each collection's royalty receiver is its own sub-treasury
11// DerivePkgSubAddr(core, "roy/<cid>"), written into the official royalty
12// extension at creation. Any market can pay it through RoyaltyInfo; the
13// creator can re-split it later (SetPayees) without touching the receiver.
14// Only core can spend it: a banker for a sub-address needs core's live
15// cur.Sub (interrealm v2 §5.5).
16
17func royaltyAddress(cid string) address {
18	return chain.DerivePkgSubAddr(selfPath, "roy/"+cid)
19}
20
21// RoyaltyAddress is the collection's royalty sub-treasury.
22func RoyaltyAddress(cid string) address {
23	mustCollection(cid)
24	return royaltyAddress(cid)
25}
26
27// DistributeRoyalties pushes the whole sub-treasury balance to the royalty
28// payees. Permissionless and never paused (I-2); market/v1 calls it after
29// every sale. Returns the amount distributed. The sub-realm banker spend
30// is verified by spike/subtoken, core and market tests on gno v1.7.0.
31func DistributeRoyalties(cur realm, cid string) int64 {
32	assertNoDeposit(cur)
33	return distribute(cur, mustCollection(cid))
34}
35
36func distribute(cur realm, c *collection) int64 {
37	cid := c.id
38	sub := cur.Sub("roy/" + cid)
39	bal := banker.NewReadonlyBanker().GetCoin(sub.Address(), "ugnot")
40	if bal <= 0 {
41		return 0
42	}
43	shares := safe.SplitByBps(bal, c.royaltyPayees)
44	bk := banker.NewBanker(banker.BankerTypeRealmSend, sub)
45	for i, p := range c.royaltyPayees {
46		if shares[i] > 0 {
47			bk.SendCoins(sub.Address(), p.Addr, chain.NewCoins(chain.NewCoin("ugnot", shares[i])))
48		}
49	}
50	chain.Emit("RoyaltiesDistributed", "cid", cid, "amount", itoa(bal))
51	return bal
52}