timeago_resolve_language()

Complexity

Conditions	19
Paths	360

Size

Total Lines	88
Code Lines	52

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
function timeago_resolve_language(?string $iso)
{
    // Normalize ISO (snake_case, lowercase)
    $iso = $iso ?: api_get_language_isocode();
    $norm = strtolower(str_replace('-', '_', trim($iso)));

    // Candidates: full, parent chain (if available), then base (first 2 letters)
    $candidates = [$norm];

    if (class_exists('SubLanguageManager')) {
        $tmp = $iso;
        // SubLanguageManager returns parents like "en_US"; normalize to snake_case
        while (!empty($parent = SubLanguageManager::getParentLocale($tmp))) {
            $candidates[] = strtolower(str_replace('-', '_', $parent));
            $tmp = $parent;
        }
    }

    if (preg_match('/^[a-z]{2}/', $norm, $m)) {
        $base = $m[0]; // e.g. "pl" from "pl_polish2", "es" from "es_spanish"
        $candidates[] = $base;
    } else {
        $base = $norm;
    }

    // Map of classes supported by the library (key = snake_case, value = class suffix)
    $map = [
        'ar' => 'Ar', 'bg' => 'Bg', 'cs' => 'Cs', 'da' => 'Da',
        'de' => 'De', 'el' => 'El', 'en' => 'En', 'es' => 'Es',
        'fa' => 'Fa', 'fi' => 'Fi', 'fr' => 'Fr', 'he' => 'He',
        'hr' => 'Hr', 'hu' => 'Hu', 'id' => 'Id', 'it' => 'It',
        'ja' => 'Ja', 'ko' => 'Ko', 'nb' => 'Nb', 'nl' => 'Nl',
        'no' => 'No', 'pl' => 'Pl',
        'pt_br' => 'Pt_BR', 'pt_pt' => 'Pt_PT',
        'ro' => 'Ro', 'ru' => 'Ru', 'sk' => 'Sk', 'sr' => 'Sr',
        'sv' => 'Sv', 'tr' => 'Tr', 'uk' => 'Uk', 'vi' => 'Vi',
        'zh_cn' => 'Zh_CN', 'zh_tw' => 'Zh_TW',
        'pt' => 'Pt_BR',
        'zh' => 'Zh_CN',
        'nn' => 'Nb',
    ];

    // Try exact candidates first, then special rules, then the base
    foreach ($candidates as $cand) {
        if (isset($map[$cand])) {
            $class = "Westsworld\\TimeAgo\\Translations\\{$map[$cand]}";
            if (class_exists($class)) {
                return new $class();
            }
        }

        // Special handling when the candidate is an ambiguous base
        if ($cand === 'pt') {
            foreach (['Pt_BR', 'Pt_PT'] as $suf) {
                $class = "Westsworld\\TimeAgo\\Translations\\$suf";
                if (class_exists($class)) {
                    return new $class();
                }
            }
        }
        if ($cand === 'zh') {
            foreach (['Zh_CN', 'Zh_TW'] as $suf) {
                $class = "Westsworld\\TimeAgo\\Translations\\$suf";
                if (class_exists($class)) {
                    return new $class();
                }
            }
        }
        if ($cand === 'nn') {
            foreach (['Nb', 'No'] as $suf) {
                $class = "Westsworld\\TimeAgo\\Translations\\$suf";
                if (class_exists($class)) {
                    return new $class();
                }
            }
        }
    }

    // Last attempt: try base directly if it has a mapping
    if (isset($map[$base])) {
        $class = "Westsworld\\TimeAgo\\Translations\\{$map[$base]}";
        if (class_exists($class)) {
            return new $class();
        }
    }

    // Final fallback: English
    return new Westsworld\TimeAgo\Translations\En();
}