const addedUser = (newUser, users) => {
  const usersWithoutNewSite = removedNewUser(users)
  return [newUser,...usersWithoutNewSite]
}

const getUserById = (id, users) => {
  return users.find(user => user.id === id)
}

const usersWithThisService = (serviceId, users) => {
  // console.log('serviceId', serviceId)
  return users.filter((user) => user.serviceId.includes(serviceId))
}

const usersWithoutThisService = (serviceId, users) => {
  return users.filter((user) => {
    return !user.serviceId.includes((serviceId))
  })
}

const addServiceIdToUser = (selectedUserId, serviceId, users) => {
  if (selectedUserId && serviceId) {
    const editIdx = users.findIndex(user => user.id === selectedUserId)
    const beforeEdit = users.slice(0, editIdx)
    const afterEdit = users.slice(editIdx + 1)
    const withEdit = [...beforeEdit, {...users[editIdx], serviceId: [...users[editIdx].serviceId, serviceId]}]
    return [...withEdit, ...afterEdit]
  }
}

const deleteServiceIdFromUser = (selectedUserId, serviceId, users) => {
  if (selectedUserId && serviceId) {
    const editIdx = users.findIndex(user => user.id === selectedUserId)
    const beforeEdit = users.slice(0, editIdx)
    const afterEdit = users.slice(editIdx + 1)
    const withEdit = [...beforeEdit, {...users[editIdx], serviceId: users[editIdx].serviceId.filter((id) => id !== serviceId)}]
    return [...withEdit, ...afterEdit]
  }
}

const updatedUser = (updatedUser, users) => {
  if (updatedUser.id) {
    const editIdx = users.findIndex(user => user.id === updatedUser.id)
    const beforeEdit = users.slice(0, editIdx)
    const afterEdit = users.slice(editIdx + 1)
    const withEdit = [...beforeEdit, updatedUser]
    return [...withEdit, ...afterEdit]
  }
}

const removedNewUser = (users) => {
  if (users.length > 0) {
    const firstUser = users[0]
    const isNewUser = firstUser.id === -1
    users = isNewUser ? users.slice(1) : users
    return users
  }
}

const deletedUser = (deletedUserId, users) => {
  if (deletedUserId) {
    const deleteIdx = users.findIndex(user => user.id === deletedUserId)
    return users.slice(0, deleteIdx).concat(users.slice(deleteIdx + 1))
  }
}

export { addedUser, getUserById, usersWithThisService, usersWithoutThisService, addServiceIdToUser, deleteServiceIdFromUser, updatedUser, removedNewUser, deletedUser }