1package foo721
2
3import (
4 "std"
5
6 "gno.land/p/demo/grc/grc721"
7 "gno.land/p/demo/ufmt"
8 "gno.land/r/demo/users"
9
10 pusers "gno.land/p/demo/users"
11)
12
13var (
14 admin std.Address = "g1us8428u2a5satrlxzagqqa5m6vmuze025anjlj"
15 foo = grc721.NewBasicNFT("FooNFT", "FNFT")
16)
17
18func init() {
19 mintNNFT(admin, 10) // @administrator (10)
20 mintNNFT("g1var589z07ppjsjd24ukm4uguzwdt0tw7g47cgm", 5) // @hariom (5)
21}
22
23func mintNNFT(owner std.Address, n uint64) {
24 count := foo.TokenCount()
25 for i := count; i < count+n; i++ {
26 tid := grc721.TokenID(ufmt.Sprintf("%d", i))
27 foo.Mint(owner, tid)
28 }
29}
30
31// Getters
32
33func BalanceOf(user pusers.AddressOrName) uint64 {
34 balance, err := foo.BalanceOf(users.Resolve(user))
35 if err != nil {
36 panic(err)
37 }
38
39 return balance
40}
41
42func OwnerOf(tid grc721.TokenID) std.Address {
43 owner, err := foo.OwnerOf(tid)
44 if err != nil {
45 panic(err)
46 }
47
48 return owner
49}
50
51func IsApprovedForAll(owner, user pusers.AddressOrName) bool {
52 return foo.IsApprovedForAll(users.Resolve(owner), users.Resolve(user))
53}
54
55func GetApproved(tid grc721.TokenID) std.Address {
56 addr, err := foo.GetApproved(tid)
57 if err != nil {
58 panic(err)
59 }
60
61 return addr
62}
63
64// Setters
65
66func Approve(user pusers.AddressOrName, tid grc721.TokenID) {
67 err := foo.Approve(users.Resolve(user), tid)
68 if err != nil {
69 panic(err)
70 }
71}
72
73func SetApprovalForAll(user pusers.AddressOrName, approved bool) {
74 err := foo.SetApprovalForAll(users.Resolve(user), approved)
75 if err != nil {
76 panic(err)
77 }
78}
79
80func TransferFrom(from, to pusers.AddressOrName, tid grc721.TokenID) {
81 err := foo.TransferFrom(users.Resolve(from), users.Resolve(to), tid)
82 if err != nil {
83 panic(err)
84 }
85}
86
87// Admin
88
89func Mint(to pusers.AddressOrName, tid grc721.TokenID) {
90 caller := std.PrevRealm().Addr()
91 assertIsAdmin(caller)
92 err := foo.Mint(users.Resolve(to), tid)
93 if err != nil {
94 panic(err)
95 }
96}
97
98func Burn(tid grc721.TokenID) {
99 caller := std.PrevRealm().Addr()
100 assertIsAdmin(caller)
101 err := foo.Burn(tid)
102 if err != nil {
103 panic(err)
104 }
105}
106
107// Render
108
109func Render(path string) string {
110 switch {
111 case path == "":
112 return foo.RenderHome()
113 default:
114 return "404\n"
115 }
116}
117
118// Util
119
120func assertIsAdmin(address std.Address) {
121 if address != admin {
122 panic("restricted access")
123 }
124}
foo721.gno
2.24 Kb ยท 124 lines
