index.js

let totalBill = 0;
const diskonNominal = 70500;
const serviceFee = 11200;
const kontribusi = {
  "REIN : Sundubu Jjigae": 46900,
  "REIN : Kimchi": 13900,
  "PUT : Sundubu Jjigae": 46900,
  "SEA : Topokki Maknae": 35900,
};

const assignedColors = {};
const colorCodes = [
  "\x1b[31m",
  "\x1b[32m",
  "\x1b[33m",
  "\x1b[34m",
  "\x1b[35m",
  "\x1b[36m",
  "\x1b[37m",
];
let colorIndex = 0;

function getColorForName(name) {
  if (!assignedColors[name]) {
    assignedColors[name] = colorCodes[colorIndex];
    colorIndex = (colorIndex + 1) % colorCodes.length;
  }
  return assignedColors[name];
}

function hitungSplitBill(
  totalBill,
  kontribusi,
  diskonNominal = 0,
  serviceFee = 0
) {
  const totalKontribusi = Object.values(kontribusi).reduce(
    (acc, val) => acc + val,
    0
  );

  if (totalKontribusi < totalBill) {
    return "Kontribusi tidak mencukupi total tagihan!";
  }

  const totalSetelahDiskon = totalBill - diskonNominal;

  const totalAkhir = Math.max(0, totalSetelahDiskon + serviceFee);

  const hasilPembayaran = {};
  const totalPerOrang = {};
  const totalPerOrangFinal = {};

  for (const [orang, kontribusiOrang] of Object.entries(kontribusi)) {
    const [nama] = orang.split(":").map((s) => s.trim());

    if (!totalPerOrang[nama]) {
      totalPerOrang[nama] = 0;
    }

    totalPerOrang[nama] += kontribusiOrang;

    const persentase = kontribusiOrang / totalKontribusi;
    hasilPembayaran[orang] = {
      dibayar: kontribusiOrang,
      harusDibayar: totalAkhir * persentase,
    };
  }

  for (const [nama, kontribusi] of Object.entries(totalPerOrang)) {
    const persentase = kontribusi / totalKontribusi;
    totalPerOrangFinal[nama] = totalAkhir * persentase;
  }

  return {
    totalBill,
    diskonNominal,
    serviceFee,
    totalAkhir,
    hasilPembayaran,
    totalPerOrang,
    totalPerOrangFinal,
  };
}

Object.keys(kontribusi).forEach((v) => {
  totalBill += kontribusi[v];
});

const hasil = hitungSplitBill(totalBill, kontribusi, diskonNominal, serviceFee);

console.log("\nDETAIL PEMBAYARAN:");
console.log(`  Total Tagihan: Rp ${hasil.totalBill}`);
console.log(`  Total Diskon: Rp ${hasil.diskonNominal}`);
console.log(`  Service Fee: Rp ${hasil.serviceFee}`);
console.log(
  `  Total Setelah Diskon dan Service Fee: Rp ${hasil.totalAkhir.toFixed(2)}`
);
console.log("\nHASIL PEMBAYARAN:");

for (const [orang, detail] of Object.entries(hasil.hasilPembayaran)) {
  const [nama] = orang.split(":").map((s) => s.trim());
  const color = getColorForName(nama);
  console.log(
    `  ${color}${orang} => Harga Rp ${detail.dibayar.toLocaleString(
      "ID-id"
    )}, Harus Dibayar Rp ${detail.harusDibayar.toLocaleString("ID-id")}\x1b[0m`
  );
}

console.log("\nTOTAL TAGIHAN PER ORANG:");
for (const [nama, total] of Object.entries(hasil.totalPerOrang)) {
  const color = getColorForName(nama);
  console.log(
    `  ${color}${nama} => Total Kontribusi Rp ${total.toLocaleString(
      "ID-id"
    )}\x1b[0m`
  );
}

console.log("\nTOTAL TAGIHAN AKHIR PER ORANG ( SETELAH DISKON ):");
for (const [nama, totalFinal] of Object.entries(hasil.totalPerOrangFinal)) {
  const color = getColorForName(nama);
  console.log(
    `  ${color}${nama} => Total Final Rp ${totalFinal.toLocaleString(
      "ID-id"
    )}\x1b[0m`
  );
}
console.log("\n");