let persons = [
    { id: 1, name: 'John Doe' },
    { id: 2, name: 'Jane Smith' },
  ];
  
  // Method to fetch all all persons
  const getAllpersons = (req, res) => {
    res.json(persons);
  };
  // Method to fetch a single person by ID
  const getPersonById = (req, res) => {
    const { id } = req.params;
    const person = persons.find((person) => person.id === parseInt(id));
  
    if (person) {
      res.json(person);
    } else {
      res.status(404).json({ error: 'person not found' });
    }
  };
  
  // Method to create a new person
  const createPerson = (req, res) => {
    const newPerson = req.body;
    
    persons.push(newPerson);
  
    res.status(201).json(newPerson);
  };
  //Method to update an existing person
  const updatePerson = (req, res) => {
    const personId = parseInt(req.params.id);
    const updatedPerson = req.body;
    // Find the index of the person with the given ID in the array
    const index = persons.findIndex((person) => person.id === personId);
    if (index === -1) {
      return res.status(404).json({ error: 'Person not found' });
    }
    // Update the person in the array
    persons[index] = { ...persons[index], ...updatedPerson };
    res.json({ message: 'Person updated successfully', updatedPerson: persons[index] });
  };
  // Method to delete a person
  const deletePerson = (req,res) =>{
    const personId = parseInt(req.params.id);
    const index = persons.findIndex((person) => person.id === personId);
  
    if (index !== -1) {
      const deletedPerson = persons.splice(index, 1)[0];
      res.json({ message: 'Person deleted successfully', deletedPerson });
    } else {
      res.status(404).json({ error: 'Person not found' });
    }
  }
  // Export the methods
  export { getAllpersons, getPersonById, createPerson, updatePerson, deletePerson };