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Tom Wiesing 2022-09-16 17:54:40 +02:00
parent a3511b1bfc
commit a1f35b97d3
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17 changed files with 618 additions and 83 deletions
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41
pkg/httpx/html.go Normal file
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package httpx
import (
"html/template"
"net/http"
)
type HTMLHandler[T any] struct {
Handler func(r *http.Request) (T, error)
Template *template.Template // called with T
}
var htmlInternalServerErr = []byte(`<!DOCTYPE HTML><title>Internal Server Error</title>Internal Server Error`)
var htmlNotFound = []byte(`<!DOCTYPE HTML><title>Not Found</title>Not Found`)
// ServeHTTP calls j(r) and returns json
func (h HTMLHandler[T]) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// call the function
result, err := h.Handler(r)
// entity not found
if err == ErrNotFound {
w.Header().Set("Content-Type", "text/html")
w.WriteHeader(http.StatusNotFound)
w.Write(htmlNotFound)
return
}
// handle other errors
if err != nil {
w.Header().Set("Content-Type", "text/html")
w.WriteHeader(http.StatusInternalServerError)
w.Write(htmlInternalServerErr)
return
}
// write out the response as json
w.Header().Set("Content-Type", "text/html")
w.WriteHeader(http.StatusOK)
h.Template.Execute(w, result)
}