admin.gno

  1package otc
  2
  3import (
  4	"chain"
  5	"strconv"
  6
  7	"gno.land/r/nt/grc20reg/v0"
  8)
  9
 10// The admin's whole reach (A1). None of these touches an offer or an escrow
 11// (A3); every one refuses coins (S2) and emits an event.
 12
 13// AddToken whitelists a token by its grc20reg key, enabled (W2).
 14func AddToken(cur realm, key string) {
 15	requireAdmin(cur)
 16	if grc20reg.Get(key) == nil {
 17		panic(ErrTokenUnknown)
 18	}
 19	if tokens.Has(key) {
 20		panic(ErrTokenExists)
 21	}
 22	if tokens.Size() >= maxTokens {
 23		panic(ErrTooManyTokens)
 24	}
 25	tokens.Set(key, true)
 26	chain.Emit(EventTokenChanged, "token", key, "enabled", "true")
 27}
 28
 29// SetTokenEnabled switches new offers on a token on or off. Open offers on a
 30// disabled token can still be filled and cancelled (W2).
 31func SetTokenEnabled(cur realm, key string, enabled bool) {
 32	requireAdmin(cur)
 33	if !tokens.Has(key) {
 34		panic(ErrTokenNotListed)
 35	}
 36	tokens.Set(key, enabled)
 37	chain.Emit(EventTokenChanged, "token", key, "enabled", strconv.FormatBool(enabled))
 38}
 39
 40// SetFeeBps sets the default fee for NEW offers (F4, F5).
 41func SetFeeBps(cur realm, bps int64) {
 42	requireAdmin(cur)
 43	requireFee(bps)
 44	feeBps = bps
 45	chain.Emit(EventFeeChanged, "fee_bps", strconv.FormatInt(bps, 10))
 46}
 47
 48// SetGnomicFee turns the reduced GNOMIC fee on or off and sets it (F6).
 49func SetGnomicFee(cur realm, enabled bool, bps int64) {
 50	requireAdmin(cur)
 51	requireFee(bps)
 52	gnomicFeeOn = enabled
 53	gnomicFee = bps
 54	chain.Emit(EventFeeChanged,
 55		"gnomic_fee_enabled", strconv.FormatBool(enabled),
 56		"gnomic_fee_bps", strconv.FormatInt(bps, 10))
 57}
 58
 59// SetFeeRecipient changes where fees go.
 60func SetFeeRecipient(cur realm, to address) {
 61	requireAdmin(cur)
 62	if !to.IsValid() {
 63		panic(ErrBadAddress)
 64	}
 65	if to == realmAddr {
 66		panic(ErrFeeToRealm)
 67	}
 68	old := feeRecipient
 69	feeRecipient = to
 70	chain.Emit(EventFeeRecipientChanged, "old", old.String(), "new", to.String())
 71}
 72
 73// SetPaused blocks or allows new offers and fills. It never blocks Cancel
 74// (A2, R10).
 75func SetPaused(cur realm, p bool) {
 76	requireAdmin(cur)
 77	paused = p
 78	chain.Emit(EventPaused, "paused", strconv.FormatBool(p))
 79}
 80
 81// TransferAdmin hands the admin role to another address.
 82func TransferAdmin(cur realm, to address) {
 83	requireAdmin(cur)
 84	if !to.IsValid() || to == realmAddr {
 85		panic(ErrBadAddress)
 86	}
 87	old := admin
 88	admin = to
 89	chain.Emit(EventAdminChanged, "old", old.String(), "new", to.String())
 90}
 91
 92func requireAdmin(cur realm) {
 93	requireNoCoins()
 94	if cur.Previous().Address() != admin {
 95		panic(ErrNotAdmin) // S7
 96	}
 97}
 98
 99func requireFee(bps int64) {
100	if bps < 0 || bps > feeCapBps {
101		panic(ErrFeeAboveCap)
102	}
103}