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|
package ext
import (
"errors"
"fmt"
"net/http"
"git.gabrielgio.me/cerrado/pkg/service"
"git.gabrielgio.me/cerrado/templates"
)
type (
Router struct {
middlewares []Middleware
router *http.ServeMux
}
Middleware func(next http.HandlerFunc) http.HandlerFunc
ErrorRequestHandler func(w http.ResponseWriter, r *http.Request) error
)
func NewRouter() *Router {
return &Router{
router: http.NewServeMux(),
}
}
func (r *Router) Handler() http.Handler {
return r.router
}
func (r *Router) AddMiddleware(middleware Middleware) {
r.middlewares = append(r.middlewares, middleware)
}
func wrapError(next ErrorRequestHandler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if err := next(w, r); err != nil {
if errors.Is(err, service.ErrRepositoryNotFound) {
NotFound(w)
} else {
InternalServerError(w, err)
}
}
}
}
func (r *Router) run(next ErrorRequestHandler) http.HandlerFunc {
return func(w http.ResponseWriter, re *http.Request) {
req := wrapError(next)
for _, r := range r.middlewares {
req = r(req)
}
req(w, re)
}
}
func (r *Router) HandleFunc(path string, handler ErrorRequestHandler) {
r.router.HandleFunc(path, r.run(handler))
}
func NotFound(w http.ResponseWriter) {
w.WriteHeader(http.StatusNotFound)
templates.WritePageTemplate(w, &templates.ErrorPage{
Message: "Not Found",
})
}
func InternalServerError(w http.ResponseWriter, err error) {
w.WriteHeader(http.StatusInternalServerError)
templates.WritePageTemplate(w, &templates.ErrorPage{
Message: fmt.Sprintf("Internal Server Error:\n%s", err.Error()),
})
}
|
