-
Notifications
You must be signed in to change notification settings - Fork 2
/
fungible_token_builder.go
70 lines (61 loc) · 1.92 KB
/
fungible_token_builder.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
package metadata
import "errors"
// FungibleTokenMetadataBuilder is a builder to build fungible token metadata
type FungibleTokenMetadataBuilder struct {
name string // required
symbol string // required
description string // required
image string // required
externalURL string // optional
}
// NewFungibleTokenMetadataBuilder creates a new FungibleTokenMetadataBuilder
func NewFungibleTokenMetadataBuilder() *FungibleTokenMetadataBuilder {
return &FungibleTokenMetadataBuilder{}
}
// SetName sets the name of the token
func (b *FungibleTokenMetadataBuilder) SetName(name string) *FungibleTokenMetadataBuilder {
b.name = name
return b
}
// SetSymbol sets the symbol of the token
func (b *FungibleTokenMetadataBuilder) SetSymbol(symbol string) *FungibleTokenMetadataBuilder {
b.symbol = symbol
return b
}
// SetDescription sets the description of the token
func (b *FungibleTokenMetadataBuilder) SetDescription(description string) *FungibleTokenMetadataBuilder {
b.description = description
return b
}
// SetImage sets the image of the token
func (b *FungibleTokenMetadataBuilder) SetImage(image string) *FungibleTokenMetadataBuilder {
b.image = image
return b
}
// SetExternalURL sets the external url of the token
func (b *FungibleTokenMetadataBuilder) SetExternalURL(externalURL string) *FungibleTokenMetadataBuilder {
b.externalURL = externalURL
return b
}
// Build builds the fungible token metadata
func (b *FungibleTokenMetadataBuilder) Build() (*Metadata, error) {
if b.name == "" {
return nil, errors.New("name is required")
}
if b.symbol == "" {
return nil, errors.New("symbol is required")
}
if b.description == "" {
return nil, errors.New("description is required")
}
if b.image == "" {
return nil, errors.New("image is required")
}
return &Metadata{
Name: b.name,
Symbol: b.symbol,
Description: b.description,
Image: b.image,
ExternalURL: b.externalURL,
}, nil
}