FunctionProject/api/controllers/favorites.js

const errorHandling = require('../assets/utils/errorHandling')
const { serverError } = require('../assets/config/errors')
const Favorites = require('../models/favorites')
const Functions = require('../models/functions')

exports.getFavoriteByFunctionId = async (req, res, next) => {
  const { functionId } = req.params
  const { userId } = req
  try {
    const favorite = await Favorites.findOne({
      where: {
        userId,
        functionId
      }
    })
    if (!favorite) {
      return res.status(200).json({ isFavorite: false })
    }
    return res.status(200).json({ isFavorite: true })
  } catch (error) {
    console.log(error)
    return errorHandling(next, serverError)
  }
}

exports.postFavoriteByFunctionId = async (req, res, next) => {
  const { functionId } = req.params
  const { userId } = req
  try {
    const resultFunction = await Functions.findOne({
      where: { id: functionId }
    })
    if (!resultFunction) {
      return errorHandling(next, {
        message: "La fonction n'existe pas.",
        statusCode: 404
      })
    }
    const favorite = await Favorites.findOne({
      where: {
        userId,
        functionId
      }
    })
    if (!favorite) {
      await Favorites.create({ userId, functionId })
      return res.status(201).json({ result: 'Le favoris a bien été ajouté!' })
    }
    return errorHandling(next, {
      message: 'La fonction est déjà en favoris.',
      statusCode: 400
    })
  } catch (error) {
    console.log(error)
    return errorHandling(next, serverError)
  }
}

exports.deleteFavoriteByFunctionId = async (req, res, next) => {
  const { functionId } = req.params
  const { userId } = req
  try {
    const resultFunction = await Functions.findOne({
      where: { id: functionId }
    })
    if (!resultFunction) {
      return errorHandling(next, {
        message: "La fonction n'existe pas.",
        statusCode: 404
      })
    }
    const favorite = await Favorites.findOne({
      where: {
        userId,
        functionId
      }
    })
    if (!favorite) {
      return errorHandling(next, {
        message: "Le fonction n'est pas en favoris.",
        statusCode: 400
      })
    }
    await favorite.destroy()
    return res
      .status(200)
      .json({ message: 'Le fonction a bien été supprimé des favoris.' })
  } catch (error) {
    console.log(error)
    return errorHandling(next, serverError)
  }
}