const { database } = require('../database')

/**
 * function to insert niveau to database
 */
async function insertNiveau(nom) {
  // Initialize an array to hold the individual names
  let nom_multiple = []

  // Check if 'nom' contains a comma and split it into multiple names
  if (nom.includes(',')) {
    nom_multiple = nom.split(',' || ', ').map((name) => name.trim()) // Trim to remove extra spaces
  } else {
    nom_multiple = [nom] // Treat it as a single name
  }

  // Prepare the query for insertion
  const query = database.prepare('INSERT INTO niveaus (nom) VALUES (?)')

  try {
    let responses = []
    for (const name of nom_multiple) {
      // Insert each name and collect the response
      let response = await query.run(name)
      responses.push(response)
    }
    if (nom_multiple.length === responses.length) {
      return JSON.stringify({
        last_row: nom_multiple.length,
        changes: 1
      })
    } else return false
  } catch (error) {
    return error // Return the error if any occurs
  }
}

/**
 * function to get single niveau for updating
 * @param {*} id
 * @returns Promise
 */
async function getSingleNiveau(id) {
  const query = database.prepare('SELECT * FROM niveaus WHERE id = ?')

  try {
    let response = await query.get(id)

    return response
  } catch (error) {
    return error
  }
}

/**
 * function used to update the niveau
 * @param {*} nom
 * @param {*} id
 * @returns Promise
 */
async function updateNiveau(nom, id) {
  const query = database.prepare('UPDATE niveaus SET nom = ? WHERE id = ?')

  try {
    let response = query.run(nom, id)

    return response
  } catch (error) {
    return error
  }
}

/**
 * function to get all niveau
 */
async function getNiveau() {
  const query = database.prepare('SELECT * FROM niveaus')

  try {
    let response = query.all()

    return response
  } catch (error) {
    return error
  }
}

async function deleteNiveau(id) {
  const query = database.prepare('DELETE FROM niveaus WHERE id = ?')

  try {
    let response = await query.run(id)

    return response
  } catch (error) {
    return error
  }
}

module.exports = {
  getNiveau,
  insertNiveau,
  getSingleNiveau,
  updateNiveau,
  deleteNiveau
}