package handlers

import (
	"net/http"

	"git.haelnorr.com/h/oslstats/internal/view/page"

	"git.haelnorr.com/h/golib/hws"
)

// Handles responses to the / path. Also serves a 404 Page for paths that
// don't have explicit handlers
func Index(server *hws.Server) http.Handler {
	return http.HandlerFunc(
		func(w http.ResponseWriter, r *http.Request) {
			if r.URL.Path != "/" {
				page, err := ErrorPage(http.StatusNotFound)
				if err != nil {
					err = server.ThrowError(w, r, hws.HWSError{
						StatusCode:      http.StatusInternalServerError,
						Message:         "An error occured trying to generate the error page",
						Error:           err,
						Level:           hws.ErrorLevel("error"),
						RenderErrorPage: false,
					})
					if err != nil {
						server.ThrowFatal(w, err)
					}
					return
				}
				err = page.Render(r.Context(), w)
				if err != nil {
					err = server.ThrowError(w, r, hws.HWSError{
						StatusCode:      http.StatusInternalServerError,
						Message:         "An error occured trying to render the error page",
						Error:           err,
						Level:           hws.ErrorLevel("error"),
						RenderErrorPage: false,
					})
					if err != nil {
						server.ThrowFatal(w, err)
					}
					return
				}
			}
			page.Index().Render(r.Context(), w)
		},
	)
}