mux/render.go

package mux

import (
	"context"
	"io"
	"log/slog"
	"net/http"
)

type Renderer interface {
	Render(context.Context, http.ResponseWriter) error
}

func Render(w http.ResponseWriter, r *http.Request, renderable Renderer) {
	if err := renderable.Render(r.Context(), w); err != nil {
		slog.ErrorContext(r.Context(), "failed render template", slog.Any("err", err))
	}
}

type RendererFunc func(context.Context, http.ResponseWriter) error

func (r RendererFunc) Render(ctx context.Context, w http.ResponseWriter) error {
	return r(ctx, w)
}

type IoRenderer interface {
	Render(context.Context, io.Writer) error
}

func Http(code int, inner IoRenderer) Renderer {
	return httpWrapper{
		code:  code,
		inner: inner,
	}
}

type httpWrapper struct {
	code  int
	inner IoRenderer
}

func (r httpWrapper) Render(ctx context.Context, w http.ResponseWriter) error {
	w.WriteHeader(r.code)
	return r.inner.Render(ctx, w)
}