const { database } = require('../database')
const { getNiveau } = require('./Niveau')
const { matiereSysteme } = require('../function/System')

/**
 * Function to insert notes into the database
 * @param {Object} formData - The form data containing subject names and values
 * @param {number} etudiant_id - The student ID
 * @param {string} etudiant_niveau - The student level
 * @returns {Promise} - Promise resolving to the database response or an error
 */
async function insertNoteRepech(
  etudiant_id,
  etudiant_niveau,
  mention_id,
  formData,
  annee_scolaire
) {
  // Extract keys and values dynamically
  const matiere_id = Object.keys(formData)
  const values = Object.values(formData)

  const query = database.prepare(
    `INSERT INTO notesrepech (etudiant_id, matiere_id, etudiant_niveau, mention_id, note, annee_scolaire) VALUES (?, ?, ?, ?, ?, ?)`
  )
  console.log(annee_scolaire)
  try {
    let response
    for (let j = 0; j < matiere_id.length; j++) {
      response = await query.run(
        etudiant_id,
        matiere_id[j],
        etudiant_niveau,
        mention_id,
        parseFloat(values[j].replace(',', '.')) || 0,
        annee_scolaire
      )
    }
    return response
  } catch (error) {
    return error
  }
}

/**
 *
 * @returns promise
 */
async function getNoteOnline() {
  const query = database.prepare('SELECT notes.* FROM notes ')

  try {
    let response = await query.all()

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

/**
 *
 * @returns promise
 */
async function getNoteRepech(id, niveau) {
  let semestre = await matiereSysteme(niveau)

  const query2 = database.prepare(
    'SELECT notesrepech.*, matieres.* FROM notesrepech JOIN matieres ON (notesrepech.matiere_id = matieres.id) WHERE notesrepech.etudiant_id = ? AND notesrepech.etudiant_niveau = ?'
  )

  try {
    let response2 = query2.all(id, niveau)
    return response2
  } catch (error) {
    console.error('Error in query2:', error)
    return error
  }
}

/**
 * Verify if a student has notes
 * @returns {Promise<Array>} - Promise resolving to an array of notes or an empty array
 */
async function verifyEtudiantIfHeHasNotesRepech() {
  try {
    // Prepare the query to filter by etudiant_id and etudiant_niveau
    const query = database.prepare('SELECT DISTINCT etudiant_id, etudiant_niveau FROM notesrepech')

    // Execute the query with the provided parameters
    const response = query.all()

    // Return the response
    return response
  } catch (error) {
    console.error('Error verifying student notes:', error)
    throw error
  }
}

/**
 * function to show moyenne in screen
 *
 * @returns promise
 */
async function showMoyenRepech(niveau, scolaire) {
  const query = database.prepare(
    `SELECT DISTINCT etudiant_id FROM notesrepech WHERE etudiant_niveau = ? AND annee_scolaire = ?`
  )

  let etudiantWithNotes = await query.all(niveau, scolaire)

  let allEtudiantWithNotes = []

  const query2 = database.prepare(
    'SELECT notesrepech.*, etudiants.*, matieres.id, matieres.nom AS nomMat, matieres.credit FROM notesrepech INNER JOIN etudiants ON (notesrepech.etudiant_id = etudiants.id) INNER JOIN matieres ON (notesrepech.matiere_id = matieres.id) WHERE notesrepech.etudiant_id = ?'
  )

  try {
    for (let index = 0; index < etudiantWithNotes.length; index++) {
      allEtudiantWithNotes.push(query2.all(etudiantWithNotes[index].etudiant_id))
    }

    return allEtudiantWithNotes
  } catch (error) {
    return error
  }
}

/**
 * function used when updating note
 * @param {Object} formData - The form data containing subject names and values
 * @param {string} niveau - The student level
 * @returns {Promise} - Promise resolving to the database response or an error
 */
async function updateNoteRepech(formData, niveau, id) {
  // Extract keys and values dynamically
  const matiere_id = Object.keys(formData)
  const values = Object.values(formData)

  const query = database.prepare(
    'UPDATE notesrepech SET note= ? WHERE etudiant_id = ? AND etudiant_niveau = ? AND matiere_id = ?'
  )

  try {
    let response

    for (let index = 0; index < matiere_id.length; index++) {
      let data = values[index]
      if (typeof data === 'string') {
        console.log(parseFloat(data.replace(',', '.')))
      } else {
        console.log(parseFloat(String(data).replace(',', '.')))
      }
      response = await query.run(data, id, niveau, matiere_id[index])
    }

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

async function blockShowMoyeneRepech() {
  const query = database.prepare(
    'SELECT DISTINCT etudiant_niveau, annee_scolaire FROM notesrepech ORDER BY annee_scolaire DESC'
  )

  const queryMention = database.prepare('SELECT * FROM mentions')

  try {
    let response = await query.all()
    let mention = await queryMention.all()
    let niveau = response.map((item) => item.etudiant_niveau)
    let annee_scolaire = response.map((item) => item.annee_scolaire)
    const query2 = database.prepare(
      `SELECT notesrepech.*, etudiants.id AS etudiantsId, etudiants.mention_id AS mentionId, etudiants.niveau, matieres.* FROM notesrepech INNER JOIN etudiants ON (notesrepech.etudiant_id = etudiants.id) INNER JOIN matieres ON (notesrepech.matiere_id = matieres.id) WHERE notesrepech.etudiant_niveau = ? AND notesrepech.annee_scolaire = ?`
    )

    let allData = []

    for (let index = 0; index < niveau.length; index++) {
      allData.push(await query2.all(niveau[index], annee_scolaire[index]))
    }

    return { response, allData, mention }
  } catch (error) {
    return error
  }
}

/**
 * get all note with matiere for single student
 * @param {*} id
 * @param {*} niveau
 * @param {*} annee_scolaire
 * @returns promise
 */
async function getMatiereAndNoteRepech(id, niveau, annee_scolaire) {
  const query = database.prepare(
    'SELECT * FROM notesrepech INNER JOIN matieres ON (notesrepech.matiere_id = matieres.id) WHERE notesrepech.etudiant_id = ? AND notesrepech.etudiant_niveau = ? AND notesrepech.annee_scolaire = ?'
  )

  try {
    let response = await query.all(id, niveau, annee_scolaire)

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

module.exports = {
  insertNoteRepech,
  getNoteRepech,
  showMoyenRepech,
  getNoteOnline,
  verifyEtudiantIfHeHasNotesRepech,
  updateNoteRepech,
  blockShowMoyeneRepech,
  getMatiereAndNoteRepech
}