package v1

import (
	"code.vikunja.io/api/pkg/models"
	"github.com/labstack/echo"
	"net/http"
	"strconv"
)

// GetListsByNamespaceID is the web handler to delete a namespace
// TODO: depricate this in favour of namespace.ReadOne() <-- should also return the lists
// @Summary Get all lists in a namespace
// @Description Returns all lists inside of a namespace.
// @tags namespace
// @Accept json
// @Produce json
// @Param id path int true "Namespace ID"
// @Security ApiKeyAuth
// @Success 200 {array} models.List "The lists."
// @Failure 403 {object} models.Message "No access to that namespace."
// @Failure 404 {object} models.Message "The namespace does not exist."
// @Failure 500 {object} models.Message "Internal error"
// @Router /namespaces/{id}/lists [get]
func GetListsByNamespaceID(c echo.Context) error {
	// Get our namespace
	namespace, err := getNamespace(c)
	if err != nil {
		if models.IsErrNamespaceDoesNotExist(err) {
			return c.JSON(http.StatusNotFound, models.Message{"Namespace not found."})
		}
		if models.IsErrUserDoesNotHaveAccessToNamespace(err) {
			return c.JSON(http.StatusForbidden, models.Message{"You don't have access to this namespace."})
		}
		return c.JSON(http.StatusInternalServerError, models.Message{"An error occurred."})
	}

	// Get the lists
	lists, err := models.GetListsByNamespaceID(namespace.ID)
	if err != nil {
		if models.IsErrNamespaceDoesNotExist(err) {
			return c.JSON(http.StatusNotFound, models.Message{"Namespace not found."})
		}
		return c.JSON(http.StatusInternalServerError, models.Message{"An error occurred."})
	}
	return c.JSON(http.StatusOK, lists)
}

func getNamespace(c echo.Context) (namespace models.Namespace, err error) {
	// Check if we have our ID
	id := c.Param("namespace")
	// Make int
	namespaceID, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		return
	}

	// Get the namespace
	namespace, err = models.GetNamespaceByID(namespaceID)
	if err != nil {
		return
	}

	// Check if the user has acces to that namespace
	user, err := models.GetCurrentUser(c)
	if err != nil {
		return
	}
	if !namespace.CanRead(&user) {
		return
	}

	return
}