backoffice/application/views/calculator.php

<link rel="stylesheet"
	  href="<?php echo base_url('bower_components/datatables.net-bs/css/dataTables.bootstrap.min.css') ?>">
<link rel="stylesheet"
	  href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/css/bootstrap-multiselect.css">
<link rel="stylesheet" href="<?php echo base_url('bower_components/toastr/toastr.css') ?>">
<?php

use Brick\Money\CurrencyConverter;
use Brick\Money\ExchangeRateProvider\PDOProvider;
use Brick\Money\ExchangeRateProvider\PDOProviderConfiguration;
use Brick\Money\ExchangeRateProvider\BaseCurrencyProvider;
use Brick\Math\RoundingMode;
use Brick\Money\Money;

extract($_POST);

$showResult = false;
$frais = 0;
$taxe = 0;
$config = $hasWallet->first_row();
$plr_user_wallet_wallet = $plr_user_wallet_wallet ? $plr_user_wallet_wallet->result() : [];
$plr_user_wallet_cash = $plr_user_wallet_cash ? $plr_user_wallet_cash->result() : [];
$plr_agent_depot_wallet = $plr_agent_depot_wallet ? $plr_agent_depot_wallet->result() : [];
$plr_agent_cash_cash = $plr_agent_cash_cash ? $plr_agent_cash_cash->result() : [];
$taxes = $taxes ? $taxes->result() : [];
$taxesNationales = array_filter($taxes, function ($tax) {
	return $tax->destination == 'national';
});

$taxesInternationales = array_filter($taxes, function ($tax) {
	return $tax->destination == 'international';
});

if (isset($save)) {
	$showResult = true;
	switch ($operation) {
		case 1: //Envoi wallet à wallet
			$frais = ($init_country != $final_country) ? calculateFees1($plr_user_wallet_wallet, $montant) : calculateFees2($config->taux_com_user_wallet_wallet_min, $config->taux_com_user_wallet_wallet_max, $config->taux_com_user_wallet_wallet, $montant);
			$taxe = ($init_country != $final_country) ? calculateTax($taxesInternationales , $frais) : calculateTax($taxesNationales ,$frais);
			break;
		case 2: //Envoi de wallet à carte
			$frais = $montant * $config->taux_com_user_wallet_carte / 100;
			$taxe = ($init_country != $final_country) ? calculateTax($taxesInternationales , $frais) : calculateTax($taxesNationales ,$frais);
			break;
		case 3: //Envoi de wallet à cash
			$frais = ($init_country != $final_country) ? calculateFees1($plr_user_wallet_cash, $montant) : calculateFees2($config->taux_com_user_wallet_cash_min, $config->taux_com_user_wallet_cash_max, $config->taux_com_user_wallet_cash, $montant);
			$taxe = ($init_country != $final_country) ? calculateTax($taxesInternationales , $frais) : calculateTax($taxesNationales ,$frais);
			break;
		case 4: //Envoi de wallet à banque
			// Non disponible
			break;
		case 5: //Envoi de carte à wallet
			$frais =$montant * $config->taux_com_user_carte_wallet / 100;
			$taxe = ($init_country != $final_country) ? calculateTax($taxesInternationales , $frais) : calculateTax($taxesNationales ,$frais);
			break;
		case 6: //Envoi de carte à cash
			$frais =$montant * $config->taux_com_user_carte_cash / 100;
			$taxe = ($init_country != $final_country) ? calculateTax($taxesInternationales , $frais) : calculateTax($taxesNationales ,$frais);
			break;
		case 9: // Retrait de wallet en cash
			$frais = calculateFees2($config->taux_com_user_wallet_cash_min, $config->taux_com_user_wallet_cash_max, $config->taux_com_user_wallet_cash, $montant);
			break;
		case 10: //Retrait de carte vers wallet
			$frais = $montant * $config->taux_com_user_carte_wallet / 100;
			break;
		case 11: // Retrait de wallet en cash
			$frais =  $montant * $config->taux_com_user_carte_cash / 100;
			break;
	}
}

//Calcul des frais internationaux
function calculateFees1(array $paliers, $montant)
{
	$size = sizeof($paliers);
	$min = $paliers[0]->min;
	$max = $size > 0 ? $paliers[$size - 1]->max : 0;
	$palier = null;
	foreach ($paliers as $p) {
		if ($montant >= $p->min && $montant <= $p->max) {
			$palier = $p;
			break;
		}
	}

	if ($palier) {
		return (($palier->min + $palier->max) / 2 * $palier->taux / 100);
	} else {
		if ($montant < $min)
			return $min * $paliers[0]->taux / 100;
		else if ($montant > $max)
			return $max * $paliers[$size - 1]->taux / 100;
	}
}

//Calcul des frais nationaux
function calculateFees2($min, $max, $taux, $montant)
{
	if ($montant < $min)
		return $min * $taux / 100;
	else if ($montant > $max)
		return $max * $taux / 100;
	else
		return $montant * $taux / 100;
}

//Calcul des taxes
function calculateTax(array $taxes, $frais)
{
	$sommeTaux = 0;
	$sommeFixe = 0;
	foreach ($taxes as $tax) {
		if ($tax->type == '%')
			$sommeTaux += $tax->valeur;

		if ($tax->type == 'fixe')
			$sommeFixe += $tax->valeur;
	}
	return ($frais * $sommeTaux / 100) + $sommeFixe;
}

// set to whatever your rates are relative to
$baseCurrency = 'USD';

// use your own credentials, or re-use your existing PDO connection
$pdo = new PDO('mysql:host=' . $this->db->hostname . ';dbname=' . $this->db->database, $this->db->username, $this->db->password);

$configuration = new PDOProviderConfiguration();

$configuration->tableName = 'exchange_rate';
$configuration->exchangeRateColumnName = 'exchange_rate';
$configuration->targetCurrencyColumnName = 'target_currency';
$configuration->sourceCurrencyCode = $baseCurrency;

// this provider loads exchange rates from your database
$provider = new PDOProvider($pdo, $configuration);

// this provider calculates exchange rates relative to the base currency
$provider = new BaseCurrencyProvider($provider, $baseCurrency);

// this currency converter can now handle any currency pair
$converter = new CurrencyConverter($provider);

//$money = Money::of('1', 'USD');
//$mone2  = $converter->convert($money, 'XAF', RoundingMode::DOWN);
?>

<div class="content-wrapper">
	<!-- Content Header (Page header) -->
	<section class="content-header">

		<h1>
			<?php echo $this->lang->line('calculator'); ?>
		</h1>
		<?php
		$site_url = base_url();

		if ($alert == "ok") {

			if (!$success == "ok") {
				?>
				<div class='alert alert-danger alert-dismissible col-xs-6'>
					<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>×</button>
					<h4><i class='icon fa fa-ban'></i> Erreur!</h4>
					<?php echo $message; ?>
				</div>

				<?php
			} else {
				?>
				<div class="alert alert-success alert-dismissible col-xs-6">
					<button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
					<h4><i class="icon fa fa-check"></i> Success!</h4>
					<?php echo $message; ?>
				</div>

				<?php
			}
		}
		?>
	</section>

	<section class="content">
		<div class="row">
			<div class="col-xs-12">
				<div class="box">
					<!--					<div class="box-header">-->
					<!---->
					<!--					</div>-->
					<div class="box-body">
						<form id="calculatorForm" class="form-content" method="post">
							<div class="form-group">
								<div class="row">
									<div class="col-lg-3">
										<label for="montant"> <?php echo $this->lang->line('Montant') ?></label>
										<input type="text" required class="form-control" id="montant"
											   name="montant" value="<?php echo @$montant; ?>">
									</div>
									<div class="col-lg-3">
										<?php
										$result = $countries;
										if ($result) {
											$numrows = $result->num_rows();

											if ($numrows > 0) { ?>
												<label for="init_country"><?php echo $this->lang->line('departure_country') ?></label>
												<select class="form-control" name="init_country" id="init_country"
														required>
													<?php foreach ($result->result() as $row) {

														echo "<option value='" . $row->id . "'>" . $row->name . "</option>";
													} ?>
												</select>
											<?php } else {
												echo $this->lang->line('no_country');
											}
											?>
										<?php } else {
											echo $this->lang->line('no_country');
										} ?>
									</div>

									<div class="col-lg-3">
										<?php
										$result = $operations;
										if ($result) {
											$numrows = sizeof($result);
											if ($numrows > 0) { ?>
												<label for="operation">Operation</label>
												<select class="form-control" name="operation"
														id="operation" <?php echo @$operation; ?> required>
													<?php foreach ($result as $row) {
														echo "<option value='" . $row->id . "'>" . $row->name . "</option>";
													} ?>
												</select>
											<?php } else {
												echo $this->lang->line('no_operation');
											}
											?>
										<?php } else {
											echo $this->lang->line('no_operation');
										} ?>
									</div>
									<div class="col-lg-3">
										<?php
										$result = $countries;
										if ($result) {
											$numrows = $result->num_rows();

											if ($numrows > 0) { ?>
												<label for="final_country"><?php echo $this->lang->line('country_of_destination') ?></label>
												<select class="form-control" name="final_country" id="final_country"
														required>
													<?php foreach ($result->result() as $row) {

														echo "<option value='" . $row->id . "'>" . $row->name . "</option>";
													} ?>
												</select>
											<?php } else {
												echo $this->lang->line('no_country');
											}
											?>
										<?php } else {
											echo $this->lang->line('no_country');
										} ?>
									</div>
								</div>
							</div>
							<?php if ($showResult) {
								$r1 = array_filter($operations, function ($op) use ($operation) {
									return $op->id == $operation;
								});
								$r2 = array_filter($countries->result(), function ($c) use ($init_country) {
									return $c->id == $init_country;
								});
								$r3 = array_filter($countries->result(), function ($c) use ($final_country) {
									return $c->id == $final_country;
								});
								$op = reset($r1);
								$d = reset($r2);
								$f = reset($r3);
								?>
								<div class="login-box" style="width: 600px;">
									<h5><strong style="text-decoration: underline;">Resultat</strong>
										: <?= @$op->name . ' du ' . $d->name . ' vers ' . $f->name ?></h5>
									<div class="login-box-body">
										<div class="row">
											<?php
											$money = Money::of(@$montant, @$d->currency_code);
											$money2 = Money::of(round(@$montant - @$frais - @$taxe, 0), @$d->currency_code);
											$money3 = Money::of(round(@$montant - @$frais - @$taxe, 0), @$d->currency_code);
											$moneyTaxe = Money::of(round(@$taxe, 0), @$d->currency_code);
											$money2 = $converter->convert($money2, @$f->currency_code, RoundingMode::DOWN);
											$money3 = $converter->convert($money3, @$d->currency_code, RoundingMode::DOWN);
											$moneyFrais = Money::of(round(@$frais, 0), @$d->currency_code);
											?>
											<div class="col-lg-6 col-md-6">
												<div>
													<label> <?php echo $this->lang->line('amount_departure_country') ?></label>
													<h4><?= $money->formatTo('fr_FR') ?></h4>
												</div>
												<div>
													<label> Frais de la transaction</label>
													<h4><?= $moneyFrais->formatTo('fr_FR') ?></h4>
												</div>
												<div>
													<label>Taxe de la transaction </label>
													<h4><?= $moneyTaxe->formatTo('fr-FR') ?></h4>
												</div>
											</div>
											<div class="col-lg-6 col-md-6">
												<div>
													<label> <?php echo $this->lang->line('amount_country_of_destination') ?></label>
													<h4><?= $money2->formatTo('fr_FR') ?></h4>
													<h4><?= $money3->formatTo('fr_FR') ?></h4>
												</div>
											</div>

										</div>
									</div>
								</div>
							<?php } ?>
							<button type="submit"
									name="save"
									class="btn btn-warning btn-block openModal"><?php echo $this->lang->line('calculate'); ?></button>
						</form>

					</div>
				</div>
			</div>
		</div>
	</section>
</div>

<!-- jQuery 3 -->
<script src="<?php echo base_url('bower_components/jquery/dist/jquery.min.js') ?>"></script>
<!-- Bootstrap 3.3.7 -->
<script src="<?php echo base_url('bower_components/bootstrap/dist/js/bootstrap.min.js') ?>"></script>
<!-- DataTables -->
<script src="<?php echo base_url('bower_components/datatables.net/js/jquery.dataTables.min.js') ?>"></script>
<script src="<?php echo base_url('bower_components/datatables.net-bs/js/dataTables.bootstrap.min.js') ?>"></script>
<!-- Slimscroll -->
<script src="<?php echo base_url('bower_components/jquery-slimscroll/jquery.slimscroll.min.js') ?>"></script>
<!-- FastClick -->
<script src="<?php echo base_url('bower_components/fastclick/lib/fastclick.js') ?>"></script>
<!-- AdminLTE App -->
<script src="<?php echo base_url('dist/js/adminlte.min.js') ?>"></script>
<!-- AdminLTE for demo purposes -->
<script src="<?php echo base_url('dist/js/demo.js') ?>"></script>
<script src="<?php echo base_url('bower_components/toastr/toastr.js') ?>"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/js/bootstrap-multiselect.js"></script>
<script src="<?php echo base_url('dist/js/sweetalert2.js') ?>"></script>
<script src="<?php echo base_url('bower_components/bootstrap-daterangepicker/daterangepicker.js') ?>"></script>
<script src="<?php echo base_url('bower_components/bootstrap-datepicker/dist/js/bootstrap-datepicker.min.js') ?>"></script>
<script src="https://cdn.jsdelivr.net/npm/autonumeric@4.5.4"></script>

<script>
	$(function () {
		anElement = new AutoNumeric('#montant', '', {
			digitGroupSeparator: ' ',
			decimalPlaces: '0',
			minimumValue: '0',
			maximumValue: '99999999999999999999999999'
		});

		$("#calculatorForm").submit(function (eventObj) {
			var txt = document.getElementById('montant');
			const montant = anElement.getNumber();
			txt.value = montant;
			return true;
		});
		//onLoad="document.getElementById('leave').options[0].selected = 'selected';"
	})
</script>