98 lines
1.8 KiB
Go
98 lines
1.8 KiB
Go
package problem
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import (
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"encoding/xml"
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"fmt"
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"net/http"
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"slices"
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)
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type Problem struct {
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Type string `json:"type,omitempty" xml:"type,omitempty"`
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Title string `json:"title,omitempty" xml:"title,omitempty"`
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Status int `json:"status,omitempty" xml:"status,omitempty"`
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Detail string `json:"detail,omitempty" xml:"detail,omitempty"`
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Instance string `json:"instance,omitempty" xml:"instance,omitempty"`
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XMLName xml.Name `json:"-" xml:"problem"`
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handler func(any) http.Handler `json:"-" xml:"-"`
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}
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func New(opts ...Option) Problem {
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p := Problem{
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Type: DefaultType,
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handler: ProblemHandler,
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}
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for _, opt := range opts {
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opt(&p)
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}
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return p
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}
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const DefaultType = "about:blank"
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func NewStatus(s int, opts ...Option) Problem {
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return New(slices.Concat([]Option{WithStatus(s)}, opts)...)
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}
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func NewDetailed(s int, detail string, opts ...Option) Problem {
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return New(slices.Concat([]Option{WithStatus(s), WithDetail(detail)}, opts)...)
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}
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func (p Problem) StatusCode() int {
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return p.Status
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}
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func (p Problem) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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p.handler(p).ServeHTTP(w, r)
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}
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func WithType(t string) Option {
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return func(p *Problem) {
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p.Type = t
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}
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}
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func WithTitle(t string) Option {
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return func(p *Problem) {
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p.Title = t
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}
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}
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func WithStatus(s int) Option {
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return func(p *Problem) {
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if p.Title == "" {
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p.Title = http.StatusText(s)
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}
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p.Status = s
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}
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}
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func WithDetail(d string) Option {
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return func(p *Problem) {
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p.Detail = d
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}
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}
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func WithDetailf(f string, args ...any) Option {
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return func(p *Problem) {
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p.Detail = fmt.Sprintf(f, args...)
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}
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}
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func WithError(err error) Option {
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return func(p *Problem) {
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p.Detail = err.Error()
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}
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}
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func WithInstance(i string) Option {
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return func(p *Problem) {
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p.Instance = i
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}
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}
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type Option func(*Problem)
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