Files
libopenapi/datamodel/high/v3/callback.go
2023-09-25 08:59:42 -04:00

115 lines
3.5 KiB
Go

// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
// SPDX-License-Identifier: MIT
package v3
import (
"sort"
"github.com/pb33f/libopenapi/datamodel/high"
low "github.com/pb33f/libopenapi/datamodel/low/v3"
"github.com/pb33f/libopenapi/orderedmap"
"github.com/pb33f/libopenapi/utils"
"gopkg.in/yaml.v3"
)
// Callback represents a high-level Callback object for OpenAPI 3+.
//
// A map of possible out-of band callbacks related to the parent operation. Each value in the map is a
// PathItem Object that describes a set of requests that may be initiated by the API provider and the expected
// responses. The key value used to identify the path item object is an expression, evaluated at runtime,
// that identifies a URL to use for the callback operation.
// - https://spec.openapis.org/oas/v3.1.0#callback-object
type Callback struct {
Expression orderedmap.Map[string, *PathItem] `json:"-" yaml:"-"`
Extensions map[string]any `json:"-" yaml:"-"`
low *low.Callback
}
// NewCallback creates a new high-level callback from a low-level one.
func NewCallback(lowCallback *low.Callback) *Callback {
n := new(Callback)
n.low = lowCallback
n.Expression = orderedmap.New[string, *PathItem]()
for pair := orderedmap.First(lowCallback.Expression.Value); pair != nil; pair = pair.Next() {
n.Expression.Set(pair.Key().Value, NewPathItem(pair.Value().Value))
}
n.Extensions = make(map[string]any)
for k, v := range lowCallback.Extensions {
n.Extensions[k.Value] = v.Value
}
return n
}
// GoLow returns the low-level Callback instance used to create the high-level one.
func (c *Callback) GoLow() *low.Callback {
return c.low
}
// GoLowUntyped will return the low-level Callback instance that was used to create the high-level one, with no type
func (c *Callback) GoLowUntyped() any {
return c.low
}
// Render will return a YAML representation of the Callback object as a byte slice.
func (c *Callback) Render() ([]byte, error) {
return yaml.Marshal(c)
}
// MarshalYAML will create a ready to render YAML representation of the Callback object.
func (c *Callback) MarshalYAML() (interface{}, error) {
// map keys correctly.
m := utils.CreateEmptyMapNode()
type cbItem struct {
cb *PathItem
exp string
line int
ext *yaml.Node
}
var mapped []*cbItem
for pair := orderedmap.First(c.Expression); pair != nil; pair = pair.Next() {
ln := 999 // default to a high value to weight new content to the bottom.
if c.low != nil {
for lPair := orderedmap.First(c.low.Expression.Value); lPair != nil; lPair = lPair.Next() {
if lPair.Key().Value == pair.Key() {
ln = lPair.Key().KeyNode.Line
}
}
}
mapped = append(mapped, &cbItem{pair.Value(), pair.Key(), ln, nil})
}
// extract extensions
nb := high.NewNodeBuilder(c, c.low)
extNode := nb.Render()
if extNode != nil && extNode.Content != nil {
var label string
for u := range extNode.Content {
if u%2 == 0 {
label = extNode.Content[u].Value
continue
}
mapped = append(mapped, &cbItem{nil, label,
extNode.Content[u].Line, extNode.Content[u]})
}
}
sort.Slice(mapped, func(i, j int) bool {
return mapped[i].line < mapped[j].line
})
for j := range mapped {
if mapped[j].cb != nil {
rendered, _ := mapped[j].cb.MarshalYAML()
m.Content = append(m.Content, utils.CreateStringNode(mapped[j].exp))
m.Content = append(m.Content, rendered.(*yaml.Node))
}
if mapped[j].ext != nil {
m.Content = append(m.Content, utils.CreateStringNode(mapped[j].exp))
m.Content = append(m.Content, mapped[j].ext)
}
}
return m, nil
}