// Package handlers provides HTTP handlers for the file system.
package handlers

import (
	"errors"
	"net/http"
	"path/filepath"

	"git.max-richter.dev/max/marka/server/internal/fsx"
	"git.max-richter.dev/max/marka/server/internal/httpx"
)

type File struct{ root string }

func NewFile(root string) http.Handler { return &File{root: root} }

func (h *File) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	reqPath := r.URL.Path
	if reqPath == "" {
		reqPath = "/"
	}
	cleanRel, err := fsx.SafeRel(h.root, reqPath)
	if err != nil {
		httpx.WriteError(w, http.StatusBadRequest, err)
		return
	}
	target := filepath.Join(h.root, filepath.FromSlash(cleanRel))

	switch r.Method {
	case http.MethodGet:
		h.get(w, r, target)
	case http.MethodPost:
		h.post(w, r, target)
	default:
		httpx.WriteError(w, http.StatusMethodNotAllowed, errors.New("method not allowed"))
	}
}