FIX: make pricejs behave more like PHP's price() in Dolibarr (taking locale settings into account)

htdocs/core/js/lib_head.js.php

@@ -127,6 +127,19 @@ $langs->trans("FridayMin"),
 $langs->trans("SaturdayMin")
 );
 
+
+$dec = ',';
+$thousand = ' ';
+if ($langs->transnoentitiesnoconv("SeparatorDecimal") != "SeparatorDecimal") {
+	$dec = $langs->transnoentitiesnoconv("SeparatorDecimal");
+}
+if ($langs->transnoentitiesnoconv("SeparatorThousand") != "SeparatorThousand") {
+	$thousand = $langs->transnoentitiesnoconv("SeparatorThousand");
+}
+if ($thousand == 'Space') {
+	$thousand = ' ';
+}
+
 ?>
 // Javascript libraries for Dolibarr ERP CRM (https://www.dolibarr.org)
 
@@ -136,6 +149,7 @@ var tradMonthsShort = <?php echo json_encode($tradMonthsShort) ?>;
 var tradDays = <?php echo json_encode($tradDays) ?>;
 var tradDaysShort = <?php echo json_encode($tradDaysShort) ?>;
 var tradDaysMin = <?php echo json_encode($tradDaysMin) ?>;
+var currencyCache = <?php echo json_encode($langs->cache_currencies) ?>;
 
 // For JQuery date picker
 $(document).ready(function() {
@@ -1064,22 +1078,95 @@ function getParameterByName(name, valueifnotfound)
 // Another solution, easier, to build a javascript rounding function
 function dolroundjs(number, decimals) { return +(Math.round(number + "e+" + decimals) + "e-" + decimals); }
 
-
 /**
  * Function similar to PHP price()
  *
+ * Example use:
+ *   pricejs(13312.448, 'MT+', 'EUR', 'fr_FR')
+ *   // (depending on conf for 'MT'): '13 312.45 €'
+ *
+ *   pricejs(343000.121, 'MT')
+ *   // assuming on conf for 'MT' is 2 and for $langs->defaultlang is 'en_US': '343,000.12'
+ *
  * @param  {number|string} amount    The amount to show
- * @param  {string} mode             'MT' or 'MU'
+ * @param  {string} mode             'MT' or 'MU'; an optional trailing '+' enables using the browser's internal
+ *                                   number formatting features (Intl object) if available
+ * @param  {string} currency_code    ISO code of currency (empty by default)
+ * @param  {string} force_locale     ISO code locale to use (if empty, will use Dolibarr's current locale code)
  * @return {string}                  The amount with digits
+ *
  */
-function pricejs(amount, mode) {
+function pricejs(amount, mode = 'MT+', currency_code = '', force_locale = '') {
 	var main_max_dec_shown = <?php echo (int) str_replace('.', '', $conf->global->MAIN_MAX_DECIMALS_SHOWN); ?>;
 	var main_rounding_unit = <?php echo (int) $conf->global->MAIN_MAX_DECIMALS_UNIT; ?>;
 	var main_rounding_tot = <?php echo (int) $conf->global->MAIN_MAX_DECIMALS_TOT; ?>;
+	var main_decimal_separator = <?php echo json_encode($dec) ?>;
+	var main_thousand_separator = <?php echo json_encode($thousand) ?>;
+	var locale_code = force_locale || <?php echo json_encode($langs->defaultlang) ?>;
+	var amountAsLocalizedString;
+	var useIntl = false; // true if mode ends with '+' and the browser provides Intl object
+	var nDigits;
+	if (currency_code === 'auto') currency_code = <?php echo json_encode($conf->currency) ?>;
 
-	if (mode == 'MU') return amount.toFixed(main_rounding_unit);
-	if (mode == 'MT') return amount.toFixed(main_rounding_tot);
-	return 'Bad value for parameter mode';
+	// min($conf->global->MAIN_MAX_DECIMALS_UNIT,$conf->global->MAIN_MAX_DECIMALS_TOT)
+
+	if (mode.endsWith && mode.endsWith('+')) {
+		mode = mode.slice(0, mode.length - 1);
+		useIntl = Boolean(Intl && Intl.NumberFormat);
+	}
+
+	if (mode === 'MU') nDigits = main_rounding_unit;
+	else if (mode === 'MT') nDigits = main_rounding_tot;
+	else return 'Bad value for parameter mode';
+
+
+	if (useIntl) {
+		// let the browser format the number using Dolibarr-provided parameters
+		var formattingOptions = {
+			minimumFractionDigits: nDigits,
+			maximumFractionDigits: nDigits
+		};
+		if (currency_code) {
+			formattingOptions['style'] = 'currency';
+			formattingOptions['currency'] = currency_code;
+		}
+		return Intl.NumberFormat(locale_code.replace('_', '-'), formattingOptions).format(amount);
+	}
+
+	// No Intl -> attempt to format the number in a way similar to Dolibarr PHP's `price()` function
+	amountAsLocalizedString = amount.toFixed(nDigits).replace(
+		/((?!^)(?:\d{3})*)(?:\.(\d+))?$/,
+		(fullMatch, digitsByThree, decimals) =>
+			digitsByThree.replace(
+				/\d{3}/g,
+				(groupOfThree) => main_thousand_separator + groupOfThree
+			) + (decimals !== undefined ? main_decimal_separator + decimals : '')
+	).replace(/ /, ' ');
+	if (!currency_code) return amountAsLocalizedString;
+
+	// print with currency
+	var currency_symbol = currency_code;
+
+	// codes of languages / currencies where the symbol must be placed before the amount
+	var currencyBeforeAmountCodes = {
+		currency: ['AUD', 'CAD', 'CNY', 'COP', 'CLP', 'GBP', 'HKD', 'MXN', 'PEN', 'USD'],
+		language: ['nl_NL']
+	};
+
+	if (currencyCache[currency_code]
+		&& currencyCache[currency_code]['unicode']
+		&& currencyCache[currency_code]['unicode'].length) {
+		currency_symbol = currencyCache[currency_code]['unicode'].reduce(function (res, cur) {return res + cur}, '');
+	}
+
+	if (currencyBeforeAmountCodes.currency.indexOf(currency_code) >= 0
+		|| currencyBeforeAmountCodes.language.indexOf(locale_code)) {
+		// if we use a language or a currency where the symbol is placed before the amount
+		return currency_symbol + amountAsLocalizedString;
+	}
+
+	// by default: currency symbol after the amount
+	return amountAsLocalizedString + ' ' + currency_symbol;
 }
 
 /**
@@ -1092,20 +1179,8 @@ function pricejs(amount, mode) {
 function price2numjs(amount) {
 	if (amount == '') return '';
 
-	<?php
-	$dec = ',';
-	$thousand = ' ';
-	if ($langs->transnoentitiesnoconv("SeparatorDecimal") != "SeparatorDecimal") {
-		$dec = $langs->transnoentitiesnoconv("SeparatorDecimal");
-	}
-	if ($langs->transnoentitiesnoconv("SeparatorThousand") != "SeparatorThousand") {
-		$thousand = $langs->transnoentitiesnoconv("SeparatorThousand");
-	}
-	if ($thousand == 'Space') {
-		$thousand = ' ';
-	}
-	print "var dec='".dol_escape_js($dec)."'; var thousand='".dol_escape_js($thousand)."';\n"; // Set var in javascript
-	?>
+	var dec = <?php echo json_encode($dec) ?>;
+	var thousand = <?php echo json_encode($thousand) ?>;
 
 	var main_max_dec_shown = <?php echo (int) str_replace('.', '', $conf->global->MAIN_MAX_DECIMALS_SHOWN); ?>;
 	var main_rounding_unit = <?php echo (int) $conf->global->MAIN_MAX_DECIMALS_UNIT; ?>;