package routes

import (
	"errors"
	"net/http"

	"git.artlef.fr/bibliomane/internal/adapter"
	"git.artlef.fr/bibliomane/internal/appcontext"
	"git.artlef.fr/bibliomane/internal/dto"
	"git.artlef.fr/bibliomane/internal/i18nresource"
	"git.artlef.fr/bibliomane/internal/model"
	"git.artlef.fr/bibliomane/internal/myvalidator"
	"github.com/gin-gonic/gin"
)

func PostBookHandler(ac appcontext.AppContext) {
	var book dto.BookFields
	err := ac.C.ShouldBindJSON(&book)
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	//when creating a book, title is required
	if book.Title == nil {
		err = myvalidator.HttpError{
			StatusCode: http.StatusBadRequest,
			Err:        errors.New(i18nresource.GetTranslatedMessage(&ac, "ValidationRequired")),
		}
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	if book.CoverID != nil {
		err = myvalidator.ValidateId(ac.Db, *book.CoverID, &model.StaticFile{})
		if err != nil {
			myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
			return
		}
	}
	user, fetchUserErr := ac.GetAuthenticatedUser()
	if fetchUserErr != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}

	id, err := saveBookToDb(ac, book, &user)
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	ac.C.JSON(http.StatusOK, gin.H{"id": id})
}

func saveBookToDb(ac appcontext.AppContext, b dto.BookFields, user *model.User) (uint, error) {
	book := model.Book{
		AddedBy: *user,
	}
	err := adapter.FillBookDbFromFields(ac, &b, &book)
	if err != nil {
		return 0, err
	}

	err = ac.Db.Save(&book).Error
	return book.ID, err
}