obl.gno

 1package obl
 2
 3import (
 4	"strings"
 5
 6	"gno.land/p/demo/tokens/grc20"
 7	"gno.land/p/nt/ownable"
 8	"gno.land/p/nt/ufmt"
 9
10	"gno.land/r/demo/defi/grc20reg"
11)
12
13var (
14	token, privateLedger = grc20.NewToken("Obl", "OBL", 6)
15	owner                = ownable.NewWithAddress("g17290cwvmrapvp869xfnhhawa8sm9edpufzat7d") // ADMIN
16)
17
18func init() {
19	privateLedger.Mint(owner.Owner(), 100_000_000_000_000)
20	grc20reg.Register(cross, token, "")
21}
22
23func TotalSupply() int64 {
24	userTeller := token.CallerTeller()
25	return userTeller.TotalSupply()
26}
27
28func BalanceOf(owner address) int64 {
29	userTeller := token.CallerTeller()
30	return userTeller.BalanceOf(owner)
31}
32
33func Allowance(owner, spender address) int64 {
34	userTeller := token.CallerTeller()
35	return userTeller.Allowance(owner, spender)
36}
37
38func Transfer(cur realm, to address, amount int64) {
39	userTeller := token.CallerTeller()
40	checkErr(userTeller.Transfer(to, amount))
41}
42
43func Approve(cur realm, spender address, amount int64) {
44	userTeller := token.CallerTeller()
45	checkErr(userTeller.Approve(spender, amount))
46}
47
48func TransferFrom(cur realm, from, to address, amount int64) {
49	userTeller := token.CallerTeller()
50	checkErr(userTeller.TransferFrom(from, to, amount))
51}
52
53func Mint(cur realm, to address, amount int64) {
54	owner.AssertOwnedByPrevious()
55	checkErr(privateLedger.Mint(to, amount))
56}
57
58func Burn(cur realm, from address, amount int64) {
59	owner.AssertOwnedByPrevious()
60	checkErr(privateLedger.Burn(from, amount))
61}
62
63func Render(path string) string {
64	parts := strings.Split(path, "/")
65	c := len(parts)
66
67	switch {
68	case path == "":
69		return token.RenderHome()
70	case c == 2 && parts[0] == "balance":
71		owner := address(parts[1])
72		userTeller := token.CallerTeller()
73		balance := userTeller.BalanceOf(owner)
74		return ufmt.Sprintf("%d\n", balance)
75	default:
76		return "404\n"
77	}
78}
79
80func checkErr(err error) {
81	if err != nil {
82		panic(err)
83	}
84}