91 lines
1.8 KiB
Plaintext
91 lines
1.8 KiB
Plaintext
package errors
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import (
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"net/http"
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"strings"
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"extrovert/templates/layouts"
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"encoding/json"
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)
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type Error interface {
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Error() string
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Status() int
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ServeHTTP(w http.ResponseWriter, r *http.Request)
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Component() templ.Component
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JSON() string
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}
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type defaultErr struct{}
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func (e defaultErr) Error() string {
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return "Error: This method should have been overridden :')"
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}
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func (e defaultErr) Status() int {
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return http.StatusNotImplemented
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}
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func (e defaultErr) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if strings.Contains(r.Header.Get("Accept"), "text/html") {
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w.Header().Set("Content-Type", "text/html")
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err := e.Component().Render(r.Context(), w)
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if err != nil {
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w.Header().Set("Content-Type", "text/plain")
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w.Write([]byte("Unable to render error message, using JSON representation: " + e.JSON()))
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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} else {
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w.Header().Set("Content-Type", "application/json")
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_, err := w.Write([]byte(e.JSON()))
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if err != nil {
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w.Header().Set("Content-Type", "text/plain")
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w.Write([]byte("Unable to send error information due to: " + err.Error()))
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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}
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w.WriteHeader(e.Status())
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}
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func (e defaultErr) JSON() string {
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type jsonErr struct {
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Error string `json:"error"`
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Info any `json:"info"`
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}
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js, err := json.Marshal(jsonErr{
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Error: e.Error(),
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Info: e,
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})
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if err != nil {
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js, _ = json.Marshal(jsonErr{
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Error: "Unable to parse JSON of error",
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Info: err.Error(),
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})
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}
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return string(js)
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}
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templ (e defaultErr) Component() {
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@layouts.Page("Error") {
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<dialog open>
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<article>
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<header>
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<p>Error</p>
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</header>
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<p>
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{ e.Error() }
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</p>
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<footer>
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<a href={ templ.SafeURL("/") }>
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<button>Return to homepage</button>
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</a>
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</footer>
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</article>
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</dialog>
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}
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}
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