package v1

import (
	"encoding/json"
	"git.mowie.cc/konrad/Library/models"
	"github.com/labstack/echo"
	"net/http"
	"strconv"
	"strings"
)

// AuthorUpdate is the handler to update an author
func AuthorUpdate(c echo.Context) error {
	// Check for Request Content
	author := c.FormValue("author")
	if author == "" {
		return c.JSON(http.StatusBadRequest, models.Message{"No author model provided"})
	}

	// Look for the authors id
	id := c.Param("id")

	// Make int
	authorID, err := strconv.ParseInt(id, 10, 64)

	if err != nil {
		return c.JSON(http.StatusInternalServerError, models.Message{"Could not get author infos"})
	}

	// Check if the author exists
	_, exists, err := models.GetAuthorByID(authorID)
	if err != nil {
		return c.JSON(http.StatusInternalServerError, models.Message{"Could not get author infos"})
	}

	if !exists {
		return c.JSON(http.StatusBadRequest, models.Message{"The author does not exist."})
	}

	// Decode the JSON
	var authorstruct models.Author
	dec := json.NewDecoder(strings.NewReader(author))

	err = dec.Decode(&authorstruct)
	if err != nil {
		return c.JSON(http.StatusInternalServerError, models.Message{"Error decoding author: " + err.Error()})
	}

	// Insert the author
	newAuthor, err := models.UpdateAuthor(authorstruct, authorID)

	if err != nil {
		return c.JSON(http.StatusInternalServerError, models.Message{"Error"})
	}

	return c.JSON(http.StatusOK, newAuthor)
}