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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
package modelgen
import (
"go/types"
"sort"
"github.com/99designs/gqlgen/codegen/config"
"github.com/99designs/gqlgen/codegen/templates"
"github.com/99designs/gqlgen/internal/code"
"github.com/99designs/gqlgen/plugin"
"github.com/vektah/gqlparser/ast"
)
type ModelBuild struct {
PackageName string
Interfaces []*Interface
Models []*Object
Enums []*Enum
Scalars []string
}
type Interface struct {
Description string
Name string
}
type Object struct {
Description string
Name string
Fields []*Field
Implements []string
}
type Field struct {
Description string
Name string
Type types.Type
Tag string
}
type Enum struct {
Description string
Name string
Values []*EnumValue
}
type EnumValue struct {
Description string
Name string
}
func New() plugin.Plugin {
return &Plugin{}
}
type Plugin struct{}
var _ plugin.ConfigMutator = &Plugin{}
func (m *Plugin) Name() string {
return "modelgen"
}
func (m *Plugin) MutateConfig(cfg *config.Config) error {
if err := cfg.Check(); err != nil {
return err
}
schema, _, err := cfg.LoadSchema()
if err != nil {
return err
}
cfg.InjectBuiltins(schema)
binder, err := cfg.NewBinder(schema)
if err != nil {
return err
}
b := &ModelBuild{
PackageName: cfg.Model.Package,
}
for _, schemaType := range schema.Types {
if cfg.Models.UserDefined(schemaType.Name) {
continue
}
switch schemaType.Kind {
case ast.Interface, ast.Union:
it := &Interface{
Description: schemaType.Description,
Name: schemaType.Name,
}
b.Interfaces = append(b.Interfaces, it)
case ast.Object, ast.InputObject:
if schemaType == schema.Query || schemaType == schema.Mutation || schemaType == schema.Subscription {
continue
}
it := &Object{
Description: schemaType.Description,
Name: schemaType.Name,
}
for _, implementor := range schema.GetImplements(schemaType) {
it.Implements = append(it.Implements, implementor.Name)
}
for _, field := range schemaType.Fields {
var typ types.Type
if cfg.Models.UserDefined(field.Type.Name()) {
pkg, typeName := code.PkgAndType(cfg.Models[field.Type.Name()].Model[0])
typ, err = binder.FindType(pkg, typeName)
if err != nil {
return err
}
} else {
fieldDef := schema.Types[field.Type.Name()]
switch fieldDef.Kind {
case ast.Scalar:
// no user defined model, referencing a default scalar
typ = types.NewNamed(
types.NewTypeName(0, cfg.Model.Pkg(), "string", nil),
nil,
nil,
)
case ast.Interface, ast.Union:
// no user defined model, referencing a generated interface type
typ = types.NewNamed(
types.NewTypeName(0, cfg.Model.Pkg(), templates.ToGo(field.Type.Name()), nil),
types.NewInterfaceType([]*types.Func{}, []types.Type{}),
nil,
)
default:
// no user defined model, must reference another generated model
typ = types.NewNamed(
types.NewTypeName(0, cfg.Model.Pkg(), templates.ToGo(field.Type.Name()), nil),
nil,
nil,
)
}
}
name := field.Name
if nameOveride := cfg.Models[schemaType.Name].Fields[field.Name].FieldName; nameOveride != "" {
name = nameOveride
}
it.Fields = append(it.Fields, &Field{
Name: name,
Type: binder.CopyModifiersFromAst(field.Type, typ),
Description: field.Description,
Tag: `json:"` + field.Name + `"`,
})
}
b.Models = append(b.Models, it)
case ast.Enum:
it := &Enum{
Name: schemaType.Name,
Description: schemaType.Description,
}
for _, v := range schemaType.EnumValues {
it.Values = append(it.Values, &EnumValue{
Name: v.Name,
Description: v.Description,
})
}
b.Enums = append(b.Enums, it)
case ast.Scalar:
b.Scalars = append(b.Scalars, schemaType.Name)
}
}
sort.Slice(b.Enums, func(i, j int) bool { return b.Enums[i].Name < b.Enums[j].Name })
sort.Slice(b.Models, func(i, j int) bool { return b.Models[i].Name < b.Models[j].Name })
sort.Slice(b.Interfaces, func(i, j int) bool { return b.Interfaces[i].Name < b.Interfaces[j].Name })
for _, it := range b.Enums {
cfg.Models.Add(it.Name, cfg.Model.ImportPath()+"."+templates.ToGo(it.Name))
}
for _, it := range b.Models {
cfg.Models.Add(it.Name, cfg.Model.ImportPath()+"."+templates.ToGo(it.Name))
}
for _, it := range b.Interfaces {
cfg.Models.Add(it.Name, cfg.Model.ImportPath()+"."+templates.ToGo(it.Name))
}
for _, it := range b.Scalars {
cfg.Models.Add(it, "github.com/99designs/gqlgen/graphql.String")
}
if len(b.Models) == 0 && len(b.Enums) == 0 {
return nil
}
return templates.Render(templates.Options{
PackageName: cfg.Model.Package,
Filename: cfg.Model.Filename,
Data: b,
GeneratedHeader: true,
})
}
|
