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// Copyright 2015 go-swagger maintainers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package spec
import (
"encoding/json"
"github.com/go-openapi/jsonpointer"
"github.com/go-openapi/swag"
)
// ResponseProps properties specific to a response
type ResponseProps struct {
Description string `json:"description"`
Schema *Schema `json:"schema,omitempty"`
Headers map[string]Header `json:"headers,omitempty"`
Examples map[string]interface{} `json:"examples,omitempty"`
}
// Response describes a single response from an API Operation.
//
// For more information: http://goo.gl/8us55a#responseObject
type Response struct {
Refable
ResponseProps
VendorExtensible
}
// JSONLookup look up a value by the json property name
func (r Response) JSONLookup(token string) (interface{}, error) {
if ex, ok := r.Extensions[token]; ok {
return &ex, nil
}
if token == "$ref" {
return &r.Ref, nil
}
ptr, _, err := jsonpointer.GetForToken(r.ResponseProps, token)
return ptr, err
}
// UnmarshalJSON hydrates this items instance with the data from JSON
func (r *Response) UnmarshalJSON(data []byte) error {
if err := json.Unmarshal(data, &r.ResponseProps); err != nil {
return err
}
if err := json.Unmarshal(data, &r.Refable); err != nil {
return err
}
return json.Unmarshal(data, &r.VendorExtensible)
}
// MarshalJSON converts this items object to JSON
func (r Response) MarshalJSON() ([]byte, error) {
var (
b1 []byte
err error
)
if r.Ref.String() == "" {
// when there is no $ref, empty description is rendered as an empty string
b1, err = json.Marshal(r.ResponseProps)
} else {
// when there is $ref inside the schema, description should be omitempty-ied
b1, err = json.Marshal(struct {
Description string `json:"description,omitempty"`
Schema *Schema `json:"schema,omitempty"`
Headers map[string]Header `json:"headers,omitempty"`
Examples map[string]interface{} `json:"examples,omitempty"`
}{
Description: r.ResponseProps.Description,
Schema: r.ResponseProps.Schema,
Examples: r.ResponseProps.Examples,
})
}
if err != nil {
return nil, err
}
b2, err := json.Marshal(r.Refable)
if err != nil {
return nil, err
}
b3, err := json.Marshal(r.VendorExtensible)
if err != nil {
return nil, err
}
return swag.ConcatJSON(b1, b2, b3), nil
}
// NewResponse creates a new response instance
func NewResponse() *Response {
return new(Response)
}
// ResponseRef creates a response as a json reference
func ResponseRef(url string) *Response {
resp := NewResponse()
resp.Ref = MustCreateRef(url)
return resp
}
// WithDescription sets the description on this response, allows for chaining
func (r *Response) WithDescription(description string) *Response {
r.Description = description
return r
}
// WithSchema sets the schema on this response, allows for chaining.
// Passing a nil argument removes the schema from this response
func (r *Response) WithSchema(schema *Schema) *Response {
r.Schema = schema
return r
}
// AddHeader adds a header to this response
func (r *Response) AddHeader(name string, header *Header) *Response {
if header == nil {
return r.RemoveHeader(name)
}
if r.Headers == nil {
r.Headers = make(map[string]Header)
}
r.Headers[name] = *header
return r
}
// RemoveHeader removes a header from this response
func (r *Response) RemoveHeader(name string) *Response {
delete(r.Headers, name)
return r
}
// AddExample adds an example to this response
func (r *Response) AddExample(mediaType string, example interface{}) *Response {
if r.Examples == nil {
r.Examples = make(map[string]interface{})
}
r.Examples[mediaType] = example
return r
}
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