| 1 | "use client"; |
| 2 | |
| 3 | import { useRouter, usePathname } from "next/navigation"; |
| 4 | import { ALL_LOCALES } from "@/lib/i18n/config"; |
| 5 | import { fill, getChrome } from "@/lib/i18n/dictionaries"; |
| 6 | import { replacePathLocale } from "@/lib/i18n/path"; |
| 7 | import { Icon } from "./icon"; |
| 8 | |
| 9 | /** Labels for the dropdown. Keyed by locale code, displayed in native script. */ |
| 10 | const LOCALE_LABELS: Record<string, string> = {}; |
| 11 | for (const l of ALL_LOCALES) { |
| 12 | LOCALE_LABELS[l.code] = l.label; |
| 13 | } |
| 14 | |
| 15 | /** Routed locales that appear in the switcher (shipped + partial). */ |
| 16 | const ROUTED = ALL_LOCALES.filter((l) => l.status === "shipped" || l.status === "partial"); |
| 17 | |
| 18 | export function LocaleSwitcher({ current }: { current: string }) { |
| 19 | const router = useRouter(); |
| 20 | const pathname = usePathname(); |
| 21 | const chrome = getChrome(current); |
| 22 | |
| 23 | const switchLocale = (code: string) => { |
| 24 | if (code === current) return; |
| 25 | document.cookie = `NEXT_LOCALE=${code};path=/;max-age=${60 * 60 * 24 * 365}`; |
| 26 | router.push(replacePathLocale(pathname, code)); |
| 27 | }; |
| 28 | |
| 29 | // If only 1 routed locale, no switcher needed. |
| 30 | if (ROUTED.length <= 1) return null; |
| 31 | |
| 32 | // If exactly 2 routed locales, show a simple toggle. |
| 33 | if (ROUTED.length === 2) { |
| 34 | const other = ROUTED.find((l) => l.code !== current); |
| 35 | if (!other) return null; |
| 36 | return ( |
| 37 | <button |
| 38 | type="button" |
| 39 | onClick={() => switchLocale(other.code)} |
| 40 | className="nav-icon-button" |
| 41 | aria-label={fill(chrome.switcherSwitchTo, { label: other.label })} |
| 42 | title={other.label} |
| 43 | > |
| 44 | <Icon name="globe" className="nav-icon" /> |
| 45 | </button> |
| 46 | ); |
| 47 | } |
| 48 | |
| 49 | // 3+ routed locales: a globe icon over a native <select>, which keeps the |
| 50 | // platform picker, keyboard and screen-reader behavior. The select is |
| 51 | // transparent and covers the icon, so the whole icon is the hit target. |
| 52 | // Partial packs sit under a visible group label so the incomplete scope is |
| 53 | // honest at the point of selection. Each option names its language in its |
| 54 | // own script, so it carries that language's `lang` (and `dir`); the badge |
| 55 | // stays in the page language on the <optgroup> instead of being mixed into |
| 56 | // the option text. |
| 57 | const option = (l: (typeof ROUTED)[number]) => ( |
| 58 | <option key={l.code} value={l.code} lang={l.code} dir={l.dir === "rtl" ? "rtl" : undefined}> |
| 59 | {l.label} |
| 60 | </option> |
| 61 | ); |
| 62 | const partial = ROUTED.filter((l) => l.status === "partial"); |
| 63 | // The badge is written as an inline "(partial)"; as a group heading it reads |
| 64 | // better without its (ASCII or full-width) brackets. |
| 65 | const partialHeading = chrome.partialBadge.replace(/^[(（]\s*|\s*[)）]$/g, ""); |
| 66 | return ( |
| 67 | <span className="nav-icon-button nav-locale"> |
| 68 | <Icon name="globe" className="nav-icon" /> |
| 69 | <select |
| 70 | value={current} |
| 71 | onChange={(e) => switchLocale(e.target.value)} |
| 72 | aria-label={chrome.switcherLabel} |
| 73 | > |
| 74 | {ROUTED.filter((l) => l.status !== "partial").map(option)} |
| 75 | {partial.length > 0 && <optgroup label={partialHeading}>{partial.map(option)}</optgroup>} |
| 76 | </select> |
| 77 | </span> |
| 78 | ); |
| 79 | } |
| 80 |