Add new debug option for http

internal/dis/component/server/handling/handling.go

@@ -0,0 +1,60 @@
+package handling
+
+import (
+	"html/template"
+	"net/http"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/rs/zerolog"
+	"github.com/tkw1536/pkglib/httpx"
+	"github.com/tkw1536/pkglib/httpx/content"
+	"github.com/tkw1536/pkglib/lazy"
+)
+
+type Handling struct {
+	component.Base
+
+	text lazy.Lazy[httpx.ErrInterceptor]
+	html lazy.Lazy[httpx.ErrInterceptor]
+}
+
+func (h *Handling) TextInterceptor() httpx.ErrInterceptor {
+	return h.text.Get(func() httpx.ErrInterceptor {
+		return h.interceptor(httpx.TextInterceptor)
+	})
+}
+
+func (h *Handling) HTMLInterceptor() httpx.ErrInterceptor {
+	return h.html.Get(func() httpx.ErrInterceptor {
+		return h.interceptor(httpx.TextInterceptor)
+	})
+}
+
+// Interceptor returns a copy of the parent interceptor with global distillery interceptor options enabled.
+func (h *Handling) interceptor(parent httpx.ErrInterceptor) httpx.ErrInterceptor {
+	pf := parent.OnFallback
+	if pf == nil {
+		pf = func(r *http.Request, err error) {}
+	}
+
+	parent.RenderError = h.Config.HTTP.Debug.Set && h.Config.HTTP.Debug.Value
+	parent.OnFallback = func(r *http.Request, err error) {
+		pf(r, err)
+
+		zerolog.Ctx(r.Context()).
+			Err(err).
+			Str("path", r.URL.Path).
+			Msg("unknown error")
+	}
+	return parent
+}
+
+func (h *Handling) Redirect(Handler content.RedirectFunc) http.Handler {
+	r := content.Redirect(Handler)
+	r.Interceptor = h.TextInterceptor()
+	return r
+}
+
+func (h *Handling) WriteHTML(context any, err error, template *template.Template, w http.ResponseWriter, r *http.Request) error {
+	return content.WriteHTMLI(context, err, template, h.HTMLInterceptor(), w, r)
+}