<?php

namespace Miniflux\Translator;

use DirectoryIterator;

const PATH = '/../locales/';

function translate($identifier)
{
    $args = func_get_args();

    array_shift($args);
    array_unshift($args, get($identifier, $identifier, $args));

    foreach ($args as &$arg) {
        $arg = htmlspecialchars($arg, ENT_QUOTES, 'UTF-8', false);
    }

    return call_user_func_array(
        'sprintf',
        $args
    );
}

function translate_no_escaping($identifier)
{
    $args = func_get_args();

    array_shift($args);
    array_unshift($args, get($identifier, $identifier));

    return call_user_func_array(
        'sprintf',
        $args
    );
}

function number($number)
{
    return number_format(
        $number,
        get('number.decimals', 2),
        get('number.decimals_separator', '.'),
        get('number.thousands_separator', ',')
    );
}

function currency($amount)
{
    $position = get('currency.position', 'before');
    $symbol = get('currency.symbol', '$');
    $str = '';

    if ($position === 'before') {
        $str .= $symbol;
    }

    $str .= number($amount);

    if ($position === 'after') {
        $str .= ' '.$symbol;
    }

    return $str;
}

function datetime($format, $timestamp)
{
    if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
        $format = preg_replace('#(?<!%)((?:%%)*)%e#', '\1%#d', $format);
        $format = preg_replace('#(?<!%)((?:%%)*)%k#', '\1%#H', $format);
    }

    return strftime($format, (int) $timestamp);
}

function get($identifier, $default = '', array $values = array())
{
    $locales = container();
    $translation = $default;

    if (isset($locales[$identifier])) {
        if (is_array($locales[$identifier])) {
            $translation = plural($identifier, $default, $values);
        } else {
            $translation = $locales[$identifier];
        }
    }

    return $translation;
}

function plural($identifier, $default, array $values)
{
    $locales = container();
    $plural = 0;

    foreach ($values as $value) {
        if (is_numeric($value)) {
            $value = abs($value);
            $plural = (int) $locales['plural']($value);
            break;
        }
    }

    for ($i = $plural; $i >= 0; --$i) {
        if (isset($locales[$identifier][$i])) {
            return $locales[$identifier][$i];
        }
    }

    return $default;
}

function load($language)
{
    setlocale(LC_TIME, $language.'.UTF-8');

    $path = __DIR__.PATH.$language;
    $locales = array();

    if (is_dir($path)) {
        $dir = new DirectoryIterator($path);

        foreach ($dir as $fileinfo) {
            if (strpos($fileinfo->getFilename(), '.php') !== false) {
                $locales = array_merge($locales, include $fileinfo->getPathname());
            }
        }
    }

    container($locales);
}

function container($locales = null)
{
    static $values = array();

    if ($locales !== null) {
        $values = $locales;
    }

    return $values;
}