// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-present Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package handler

import (
	"errors"
	"fmt"
	"net/http"
	"strconv"

	"code.vikunja.io/api/pkg/log"
	"code.vikunja.io/api/pkg/models"
	"code.vikunja.io/api/pkg/modules/auth"

	"github.com/labstack/echo/v5"
)

// ReadOneWeb is the webhandler to get one object
func (c *WebHandler) ReadOneWeb(ctx *echo.Context) error {
	// Get our model
	currentStruct := c.EmptyStruct()

	// Get the object & bind params to struct
	if err := ctx.Bind(currentStruct); err != nil {
		log.Debugf("Invalid model error. Internal error was: %s", err.Error())
		var he *echo.HTTPError
		if errors.As(err, &he) {
			return models.ErrInvalidModel{Message: fmt.Sprintf("%v", he.Message), Err: err}
		}
		return models.ErrInvalidModel{Err: err}
	}

	// Check permissions
	currentAuth, err := auth.GetAuthFromClaims(ctx)
	if err != nil {
		return echo.NewHTTPError(http.StatusInternalServerError, "Could not determine the current user.").Wrap(err)
	}

	maxPermission, err := DoReadOne(ctx.Request().Context(), currentStruct, currentAuth)
	if err != nil {
		return err
	}

	// Set the headers
	ctx.Response().Header().Set("x-max-permission", strconv.FormatInt(int64(maxPermission), 10))
	ctx.Response().Header().Set("Access-Control-Expose-Headers", "x-max-permission")

	return ctx.JSON(http.StatusOK, currentStruct)
}
