[Go] bug fix (breaking), minor code format enhancement (#8715)

* go minor code format enhnacement

* fix required vars in the model new

* remove comma

Author: wing328

modules/openapi-generator/src/main/resources/go/api.mustache

@@ -77,8 +77,10 @@ func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Reques
 func (a *{{{classname}}}Service) {{{nickname}}}(ctx _context.Context{{#pathParams}}, {{paramName}} {{{dataType}}}{{/pathParams}}) {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request {
 	return {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request{
 		ApiService: a,
-		ctx: ctx,{{#pathParams}}
-		{{paramName}}: {{paramName}},{{/pathParams}}
+		ctx: ctx,
+		{{#pathParams}}
+		{{paramName}}: {{paramName}},
+		{{/pathParams}}
 	}
 }
 

modules/openapi-generator/src/main/resources/go/client.mustache

@@ -169,7 +169,6 @@ func parameterToJson(obj interface{}) (string, error) {
 	return string(jsonBuf), err
 }
 
-
 // callAPI do the request.
 func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
 	if c.cfg.Debug {
@@ -409,9 +408,9 @@ func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err err
 		return nil
 	}
 	if jsonCheck.MatchString(contentType) {
-		if actualObj, ok := v.(interface{GetActualInstance() interface{}}); ok { // oneOf, anyOf schemas
-			if unmarshalObj, ok := actualObj.(interface{UnmarshalJSON([]byte) error}); ok { // make sure it has UnmarshalJSON defined
-				if err = unmarshalObj.UnmarshalJSON(b); err!= nil {
+		if actualObj, ok := v.(interface{ GetActualInstance() interface{} }); ok { // oneOf, anyOf schemas
+			if unmarshalObj, ok := actualObj.(interface{ UnmarshalJSON([]byte) error }); ok { // make sure it has UnmarshalJSON defined
+				if err = unmarshalObj.UnmarshalJSON(b); err != nil {
 					return err
 				}
 			} else {

modules/openapi-generator/src/main/resources/go/model_simple.mustache

@@ -31,9 +31,9 @@ type _{{{classname}}} {{{classname}}}
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func New{{classname}}({{#vars}}{{#required}}{{nameInCamelCase}} {{dataType}}, {{/required}}{{/vars}}) *{{classname}} {
+func New{{classname}}({{#requiredVars}}{{nameInCamelCase}} {{dataType}}{{^-last}}, {{/-last}}{{/requiredVars}}) *{{classname}} {
 	this := {{classname}}{}
-{{#vars}}
+{{#allVars}}
 {{#required}}
 	this.{{name}} = {{nameInCamelCase}}
 {{/required}}
@@ -51,7 +51,7 @@ func New{{classname}}({{#vars}}{{#required}}{{nameInCamelCase}} {{dataType}}, {{
 {{/vendorExtensions.x-golang-is-container}}
 {{/defaultValue}}
 {{/required}}
-{{/vars}}
+{{/allVars}}
 	return &this
 }
 
@@ -85,7 +85,7 @@ func New{{classname}}WithDefaults() *{{classname}} {
 // If the value is explicit nil, the zero value for {{vendorExtensions.x-go-base-type}} will be returned
 {{/isNullable}}
 func (o *{{classname}}) Get{{name}}() {{vendorExtensions.x-go-base-type}} {
-	if o == nil {{#isNullable}}{{^vendorExtensions.x-golang-is-container}}|| o.{{name}}.Get() == nil{{/vendorExtensions.x-golang-is-container}}{{/isNullable}} {
+	if o == nil{{#isNullable}}{{^vendorExtensions.x-golang-is-container}} || o.{{name}}.Get() == nil{{/vendorExtensions.x-golang-is-container}}{{/isNullable}} {
 		var ret {{vendorExtensions.x-go-base-type}}
 		return ret
 	}

modules/openapi-generator/src/main/resources/go/utils.mustache

@@ -66,7 +66,6 @@ func (v *NullableBool) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableInt struct {
 	value *int
 	isSet bool
@@ -103,7 +102,6 @@ func (v *NullableInt) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableInt32 struct {
 	value *int32
 	isSet bool
@@ -140,7 +138,6 @@ func (v *NullableInt32) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableInt64 struct {
 	value *int64
 	isSet bool
@@ -177,7 +174,6 @@ func (v *NullableInt64) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableFloat32 struct {
 	value *float32
 	isSet bool
@@ -214,7 +210,6 @@ func (v *NullableFloat32) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableFloat64 struct {
 	value *float64
 	isSet bool
@@ -251,7 +246,6 @@ func (v *NullableFloat64) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableString struct {
 	value *string
 	isSet bool
@@ -288,7 +282,6 @@ func (v *NullableString) UnmarshalJSON(src []byte) error {
 	return json.Unmarshal(src, &v.value)
 }
 
-
 type NullableTime struct {
 	value *time.Time
 	isSet bool