script.js

document.getElementById("akanForm").addEventListener("submit", function (e) {
  e.preventDefault();

  // Retrieve user input
  const birthdate = document.getElementById("birthdate").value;
  const gender = document.getElementById("gender").value;
  const result = document.getElementById("result");

  if (!birthdate || !gender) {
    result.innerText = "⚠️ Please enter your birthdate and select gender.";
    return;
  }

  // Split date into components
  const dateObj = new Date(birthdate);
  const DD = dateObj.getDate();
  const MM = dateObj.getMonth() + 1; // Months are 0-based in JS
  const YYYY = dateObj.getFullYear();

  // Validate input
  if (DD < 1 || DD > 31) {
    result.innerText = "⚠️ Day must be between 1 and 31.";
    return;
  }
  if (MM < 1 || MM > 12) {
    result.innerText = "⚠️ Month must be between 1 and 12.";
    return;
  }

  // Extract CC and YY
  const CC = Math.floor(YYYY / 100); // first two digits
  const YY = YYYY % 100; // last two digits

  // Apply formula
  let d =
    (CC / 4 - 2 * CC - 1 + (5 * YY) / 4 + (26 * (MM + 1)) / 10 + DD) % 7;

  // Handle negative modulo in JS
  d = ((Math.floor(d) % 7) + 7) % 7;

  // Akan names mapping
  const akanNames = {
    male: ["Kwasi", "Kwadwo", "Kwabena", "Kwaku", "Yaw", "Kofi", "Kwame"],
    female: ["Akosua", "Adwoa", "Abenaa", "Akua", "Yaa", "Afua", "Ama"],
  };

  const days = [
    "Sunday",
    "Monday",
    "Tuesday",
    "Wednesday",
    "Thursday",
    "Friday",
    "Saturday",
  ];

  // Get name
  const akanName = akanNames[gender][d];

  // Display result
  result.innerText = `You were born on a ${days[d]}. Your Akan name is: ${akanName}.`;
});