package routes

import (
	"errors"
	"net/http"

	"git.artlef.fr/PersonalLibraryManager/internal/appcontext"
	"git.artlef.fr/PersonalLibraryManager/internal/model"
	"git.artlef.fr/PersonalLibraryManager/internal/myvalidator"
	"gorm.io/gorm"
)

type bookPostMarkAsRead struct {
	BookID uint `json:"bookId" binding:"required"`
}

func PostBookReadHandler(ac appcontext.AppContext) {
	var userbook bookPostMarkAsRead
	err := ac.C.ShouldBindJSON(&userbook)
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	err = myvalidator.ValidateId(ac.Db, userbook.BookID, &model.Book{})
	if err != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}
	user, fetchUserErr := ac.GetAuthenticatedUser()
	if fetchUserErr != nil {
		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
		return
	}

	var userbookDb model.UserBook
	res := ac.Db.Where("user_id = ? AND book_id = ?", user.ID, userbook.BookID).First(&userbookDb)
	err = res.Error
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			userbookDb = userBookWsToDb(userbook, &user)
			err = ac.Db.Save(&userbookDb).Error
			if err != nil {
				myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
				return
			}
		} else {
			myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
			return
		}
	} else {
		userbookDb.Read = true
		ac.Db.Save(&userbookDb)
	}
	ac.C.String(http.StatusOK, "Success")
}

func userBookWsToDb(ub bookPostMarkAsRead, user *model.User) model.UserBook {
	return model.UserBook{
		UserID: user.ID,
		BookID: ub.BookID,
		Read:   true,
	}
}