package http

import (
	"io/ioutil"
	"net/http"
	"errors"
	"encoding/json"
)

type OnlyOfficeCallback struct {
	ChangesUrl  string              `json:"changesurl,omitempty"`
	Key         string              `json:"key"`
	Status      int                 `json:"status"`
	Url         string              `json:"url,omitempty"`
	Users       []string            `json:"users,omitempty"`
	UserData    string              `json:"userdata,omitempty"`
}

var onlyofficeCallbackHandler = withUser(func(w http.ResponseWriter, r *http.Request, d *data) (int, error) {
	body, e1 := ioutil.ReadAll(r.Body)
	if e1 != nil {
		return http.StatusInternalServerError, e1
	}

	var data OnlyOfficeCallback
	err1 := json.Unmarshal(body, &data)
	if err1 != nil {
		return http.StatusInternalServerError, err1
	}

	if (data.Status == 2 || data.Status == 6) {
		docPath := r.URL.Query().Get("save")
		if docPath == "" {
			return http.StatusInternalServerError, errors.New("Unable to get file save path")
		}
		
		if !d.user.Perm.Modify || !d.Check(docPath) {
			return http.StatusForbidden, nil
		}

		doc, err2 := http.Get(data.Url)
		if err2 != nil {
			return http.StatusInternalServerError, err2
		}
		defer doc.Body.Close()

		err := d.RunHook(func() error {
			_, writeErr := writeFile(d.user.Fs, docPath, doc.Body)
			if writeErr != nil {
				return writeErr
			}
			return nil
		}, "save", docPath, "", d.user)

		if err != nil {
			_ = d.user.Fs.RemoveAll(docPath)
			return http.StatusInternalServerError, err
		}
	}

	resp := map[string]int{
		"error": 0,
	}
	return renderJSON(w, r, resp)
})