Merge pull request 'I18N support' (#22) from feat-i18n into master

Reviewed-on: https://code.lightstands.xyz///Rubicon/tutu/pulls/22

package.json

@@ -27,9 +27,11 @@
     "wrangler": "^3.78.2"
   },
   "dependencies": {
+    "@formatjs/intl-localematcher": "^0.5.4",
     "@nanostores/persistent": "^0.10.2",
     "@nanostores/solid": "^0.4.2",
     "@solid-primitives/event-listener": "^2.3.3",
+    "@solid-primitives/i18n": "^2.1.1",
     "@solid-primitives/intersection-observer": "^2.1.6",
     "@solid-primitives/resize-observer": "^2.0.26",
     "@solidjs/router": "^0.14.5",
@@ -40,6 +42,7 @@
     "date-fns": "^3.6.0",
     "fast-average-color": "^9.4.0",
     "hammerjs": "^2.0.8",
+    "iso-639-1": "^3.1.3",
     "masto": "^6.8.0",
     "nanostores": "^0.11.3",
     "solid-js": "^1.8.22",

src/App.tsx

@@ -6,6 +6,7 @@ import {
   createSignal,
   ErrorBoundary,
   lazy,
+  onCleanup,
 } from "solid-js";
 import { useRootTheme } from "./material/mui.js";
 import {
@@ -15,6 +16,7 @@ import {
 } from "./masto/clients.js";
 import { $accounts } from "./accounts/stores.js";
 import { useStore } from "@nanostores/solid";
+import { DateFnScope, useLanguage } from "./platform/i18n.jsx";
 
 const AccountSignIn = lazy(() => import("./accounts/SignIn.js"));
 const AccountMastodonOAuth2Callback = lazy(
@@ -47,6 +49,7 @@ const App: Component = () => {
   const theme = useRootTheme();
   const accts = useStore($accounts);
   const clientStore = createSignal<Session[]>([]);
+  const lang = useLanguage();
 
   createRenderEffect(() => {
     const [, setClients] = clientStore;
@@ -55,6 +58,16 @@ const App: Component = () => {
     );
   });
 
+  createRenderEffect(() => {
+    const root = document.querySelector(":root")!;
+    root.setAttribute("lang", lang());
+  });
+
+  onCleanup(() => {
+    const root = document.querySelector(":root")!;
+    root.removeAttribute("lang");
+  });
+
   const UnexpectedError = lazy(() => import("./UnexpectedError.js"));
 
   return (
@@ -65,9 +78,11 @@ const App: Component = () => {
       }}
     >
       <ThemeProvider theme={theme()}>
-        <ClientProvider value={clientStore}>
+        <DateFnScope>
-          <Routing />
+          <ClientProvider value={clientStore}>
-        </ClientProvider>
+            <Routing />
+          </ClientProvider>
+        </DateFnScope>
       </ThemeProvider>
     </ErrorBoundary>
   );

src/masto/acct.ts

@@ -12,11 +12,16 @@ export function useSignedInProfiles() {
   });
   return [
     () => {
-      const value = accessor();
+      try {
-      if (!value) {
+        const value = accessor();
-        return sessions().map((x) => ({ ...x, inf: x.account.inf }));
+        if (value) {
+          return value;
+        }
+      } catch (reason) {
+        console.error("useSignedInProfiles: update acct info failed", reason);
       }
-      return value;
+
+      return sessions().map((x) => ({ ...x, inf: x.account.inf }));
     },
     tools,
   ] as const;

src/platform/i18n.tsx

@@ -0,0 +1,188 @@
+import {
+  ParentComponent,
+  createContext,
+  createMemo,
+  createResource,
+  useContext,
+} from "solid-js";
+import { match } from "@formatjs/intl-localematcher";
+import { Accessor, createEffect, createSignal } from "solid-js";
+import { $settings } from "../settings/stores";
+import { enGB } from "date-fns/locale/en-GB";
+import { useStore } from "@nanostores/solid";
+import type { Locale } from "date-fns";
+import { resolveTemplate, translator, type Template } from "@solid-primitives/i18n";
+
+async function synchronised(
+  name: string,
+  callback: () => Promise<void> | void,
+): Promise<void> {
+  await navigator.locks.request(name, callback);
+}
+
+export const SUPPORTED_LANGS = ["en", "zh-Hans"] as const;
+
+export const SUPPORTED_REGIONS = ["en_US", "en_GB", "zh_CN"] as const;
+
+const DEFAULT_LANG = "en";
+
+/**
+ * Decide the using language for the user.
+ * @returns the selected language tag
+ */
+export function autoMatchLangTag() {
+  return match(Array.from(navigator.languages), SUPPORTED_LANGS, DEFAULT_LANG);
+}
+
+const DateFnLocaleCx = /* __@PURE__ */createContext<Accessor<Locale>>(() => enGB);
+
+const cachedDateFnLocale: Record<string, Locale> = {
+  enGB,
+};
+
+export function autoMatchRegion() {
+  const regions = navigator.languages
+    .map((x) => {
+      const parts = x.split("_");
+      if (parts.length > 1) {
+        return parts[1];
+      }
+      return undefined;
+    })
+    .filter((x): x is string => !!x);
+  for (const r of regions) {
+    for (const available of SUPPORTED_REGIONS) {
+      if (available.toLowerCase().endsWith(r.toLowerCase())) {
+        return available;
+      }
+    }
+  }
+  return "en_GB";
+}
+
+export function useRegion() {
+  const appSettings = useStore($settings);
+
+  return createMemo(() => {
+    const settings = appSettings();
+    if (typeof settings.region !== "undefined") {
+      return settings.region;
+    } else {
+      return autoMatchRegion();
+    }
+  });
+}
+
+async function importDateFnLocale(tag: string): Promise<Locale> {
+  switch (tag.toLowerCase()) {
+    case "en_us":
+      return (await import("date-fns/locale/en-US")).enUS;
+    case "en_gb":
+      return (await import("date-fns/locale/en-GB")).enGB;
+    case "zh_cn":
+      return (await import("date-fns/locale/zh-CN")).zhCN;
+    default:
+      throw new TypeError(`unsupported tag "${tag}"`);
+  }
+}
+
+/**
+ * Provides runtime values and fetch dependencies for date-fns locale
+ */
+export const DateFnScope: ParentComponent = (props) => {
+  const [dateFnLocale, setDateFnLocale] = createSignal(enGB);
+  const region = useRegion();
+
+  createEffect(() => {
+    const dateFnLocaleName = region();
+
+    if (cachedDateFnLocale[dateFnLocaleName]) {
+      setDateFnLocale(cachedDateFnLocale[dateFnLocaleName]);
+    } else {
+      synchronised("i18n-wrapper-load-date-fns-locale", async () => {
+        if (cachedDateFnLocale[dateFnLocaleName]) {
+          setDateFnLocale(cachedDateFnLocale[dateFnLocaleName]);
+          return;
+        }
+        const target = `date-fns/locale/${dateFnLocaleName}`;
+        try {
+          const mod = await importDateFnLocale(dateFnLocaleName);
+          cachedDateFnLocale[dateFnLocaleName] = mod;
+          setDateFnLocale(mod);
+        } catch (reason) {
+          console.error(
+            {
+              act: "load-date-fns-locale",
+              stat: "failed",
+              reason,
+              target,
+            },
+            "failed to load date-fns locale",
+          );
+        }
+      });
+    }
+  });
+
+  return (
+    <DateFnLocaleCx.Provider value={dateFnLocale}>
+      {props.children}
+    </DateFnLocaleCx.Provider>
+  );
+};
+
+/**
+ * Get the {@link Locale} object for date-fns.
+ *
+ * This function must be using in {@link DateFnScope}
+ *
+ * @returns Accessor for Locale
+ */
+export function useDateFnLocale(): Accessor<Locale> {
+  const cx = useContext(DateFnLocaleCx);
+  return cx;
+}
+
+export function useLanguage() {
+  const settings = useStore($settings);
+  return () => settings().language || autoMatchLangTag();
+}
+
+type ImportFn<T> = (name: string) => Promise<{default: T}>
+
+type ImportedModule<F> = F extends ImportFn<infer T> ? T: never
+
+type MergedImportedModule<T> =
+  T extends [] ? {} :
+  T extends [infer I] ? ImportedModule<I> :
+  T extends [infer I, ...infer J] ? ImportedModule<I> & MergedImportedModule<J> : never
+
+export function createStringResource<
+  T extends ImportFn<Record<string, string | Template<any> | undefined>>[],
+>(...importFns: T) {
+  const language = useLanguage();
+  const cache: Record<string, MergedImportedModule<T>> = {};
+
+  return createResource(
+    () => [language()] as const,
+    async ([nlang]) => {
+      if (cache[nlang]) {
+        return cache[nlang];
+      }
+
+      const results = await Promise.all(importFns.map(x => x(nlang).then(v => v.default)))
+
+      const merged: MergedImportedModule<T> = Object.assign({}, ...results)
+
+      cache[nlang] = merged;
+
+      return merged;
+    },
+  );
+}
+
+export function createTranslator<T extends ImportFn<Record<string, string | Template<any> | undefined>>[],>(...importFns: T) {
+  const res = createStringResource(...importFns)
+
+  return [translator(res[0], resolveTemplate), res] as const
+}

src/settings/ChooseLang.tsx

@@ -0,0 +1,116 @@
+import { createMemo, For, type Component, type JSX } from "solid-js";
+import Scaffold from "../material/Scaffold";
+import {
+  AppBar,
+  IconButton,
+  List,
+  ListItem,
+  ListItemButton,
+  ListItemSecondaryAction,
+  ListItemText,
+  ListSubheader,
+  Radio,
+  Switch,
+  Toolbar,
+} from "@suid/material";
+import { Close as CloseIcon } from "@suid/icons-material";
+import iso639_1 from "iso-639-1";
+import {
+  autoMatchLangTag,
+  createTranslator,
+  SUPPORTED_LANGS,
+} from "../platform/i18n";
+import { Title } from "../material/typography";
+import type { Template } from "@solid-primitives/i18n";
+
+type ChooseLangProps = {
+  code?: string;
+  onCodeChange: (ncode?: string) => void;
+  onClose?: JSX.EventHandlerUnion<HTMLButtonElement, MouseEvent>;
+};
+
+const ChooseLang: Component<ChooseLangProps> = (props) => {
+  const [t] = createTranslator(
+    () => import("./i18n/lang-names.json"),
+    (code) =>
+      import(`./i18n/${code}.json`) as Promise<{
+        default: Record<string, string | undefined> & {
+          ["lang.auto"]: Template<{ detected: string }>;
+        };
+      }>,
+  );
+
+  const unsupportedLangCodes = createMemo(() => {
+    return iso639_1.getAllCodes().filter((x) => !["zh", "en"].includes(x));
+  });
+
+  const matchedLangCode = createMemo(() => autoMatchLangTag());
+
+  return (
+    <Scaffold
+      topbar={
+        <AppBar position="static">
+          <Toolbar
+            variant="dense"
+            sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
+          >
+            <IconButton color="inherit" onClick={props.onClose} disableRipple>
+              <CloseIcon />
+            </IconButton>
+            <Title>{t("Choose Language")}</Title>
+          </Toolbar>
+        </AppBar>
+      }
+    >
+      <List
+        sx={{
+          paddingBottom: "var(--safe-area-inset-bottom, 0)",
+        }}
+      >
+        <ListItemButton
+          onClick={() => {
+            props.onCodeChange(props.code ? undefined : matchedLangCode());
+          }}
+        >
+          <ListItemText>
+            {t("lang.auto", {
+              detected: t(`lang.${matchedLangCode()}`) ?? matchedLangCode(),
+            })}
+          </ListItemText>
+          <ListItemSecondaryAction>
+            <Switch checked={typeof props.code === "undefined"} />
+          </ListItemSecondaryAction>
+        </ListItemButton>
+        <List subheader={<ListSubheader>{t("Supported")}</ListSubheader>}>
+          <For each={SUPPORTED_LANGS}>
+            {(code) => (
+              <ListItemButton
+                disabled={typeof props.code === "undefined"}
+                onClick={[props.onCodeChange, code]}
+              >
+                <ListItemText>{t(`lang.${code}`)}</ListItemText>
+                <ListItemSecondaryAction>
+                  <Radio
+                    checked={props.code === code || (props.code === undefined && matchedLangCode() == code)}
+                  />
+                </ListItemSecondaryAction>
+              </ListItemButton>
+            )}
+          </For>
+        </List>
+
+        <List subheader={<ListSubheader>{t("Unsupported")}</ListSubheader>}>
+          <For each={unsupportedLangCodes()}>
+            {(code) => (
+              <ListItem>
+                <ListItemText>{iso639_1.getNativeName(code)}</ListItemText>
+              </ListItem>
+            )}
+          </For>
+        </List>
+      </List>
+    </Scaffold>
+  );
+};
+
+export default ChooseLang;

src/settings/ChooseRegion.tsx

@@ -0,0 +1,106 @@
+import { createMemo, For, type Component, type JSX } from "solid-js";
+import Scaffold from "../material/Scaffold";
+import {
+  AppBar,
+  IconButton,
+  List,
+  ListItemButton,
+  ListItemSecondaryAction,
+  ListItemText,
+  ListSubheader,
+  Radio,
+  Switch,
+  Toolbar,
+} from "@suid/material";
+import { Close as CloseIcon } from "@suid/icons-material";
+import iso639_1 from "iso-639-1";
+import {
+  autoMatchRegion,
+  createTranslator,
+  SUPPORTED_REGIONS,
+} from "../platform/i18n";
+import { Title } from "../material/typography";
+import type { Template } from "@solid-primitives/i18n";
+
+type ChooseRegionProps = {
+  code?: string;
+  onCodeChange: (ncode?: string) => void;
+  onClose?: JSX.EventHandlerUnion<HTMLButtonElement, MouseEvent>;
+};
+
+const ChooseRegion: Component<ChooseRegionProps> = (props) => {
+  const [t] = createTranslator(
+    () => import("./i18n/lang-names.json"),
+    (code) =>
+      import(`./i18n/${code}.json`) as Promise<{
+        default: Record<string, string | undefined> & {
+          ["lang.auto"]: Template<{ detected: string }>;
+        };
+      }>,
+  );
+
+  const unsupportedLangCodes = createMemo(() => {
+    return iso639_1.getAllCodes().filter((x) => !["zh", "en"].includes(x));
+  });
+
+  const matchedRegionCode = createMemo(() => autoMatchRegion());
+
+  return (
+    <Scaffold
+      topbar={
+        <AppBar position="static">
+          <Toolbar
+            variant="dense"
+            sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
+          >
+            <IconButton color="inherit" onClick={props.onClose} disableRipple>
+              <CloseIcon />
+            </IconButton>
+            <Title>{t("Choose Language")}</Title>
+          </Toolbar>
+        </AppBar>
+      }
+    >
+      <List
+        sx={{
+          paddingBottom: "var(--safe-area-inset-bottom, 0)",
+        }}
+      >
+        <ListItemButton
+          onClick={() => {
+            props.onCodeChange(props.code ? undefined : matchedRegionCode());
+          }}
+        >
+          <ListItemText>
+            {t("region.auto", {
+              detected: t(`region.${matchedRegionCode()}`) ?? matchedRegionCode(),
+            })}
+          </ListItemText>
+          <ListItemSecondaryAction>
+            <Switch checked={typeof props.code === "undefined"} />
+          </ListItemSecondaryAction>
+        </ListItemButton>
+
+        <List subheader={<ListSubheader>{t("Supported")}</ListSubheader>}>
+          <For each={SUPPORTED_REGIONS}>
+            {(code) => (
+              <ListItemButton
+                disabled={typeof props.code === "undefined"}
+                onClick={[props.onCodeChange, code]}
+              >
+                <ListItemText>{t(`region.${code}`)}</ListItemText>
+                <ListItemSecondaryAction>
+                  <Radio
+                    checked={props.code === code || (props.code === undefined && matchedRegionCode() == code)}
+                  />
+                </ListItemSecondaryAction>
+              </ListItemButton>
+            )}
+          </For>
+        </List>
+      </List>
+    </Scaffold>
+  );
+};
+
+export default ChooseRegion;

src/settings/Settings.tsx

@@ -1,4 +1,4 @@
-import { For, Show, type ParentComponent } from "solid-js";
+import { createSignal, For, Show, type ParentComponent } from "solid-js";
 import Scaffold from "../material/Scaffold.js";
 import {
   AppBar,
@@ -7,32 +7,63 @@ import {
   List,
   ListItem,
   ListItemButton,
+  ListItemIcon,
   ListItemSecondaryAction,
   ListItemText,
   ListSubheader,
+  NativeSelect,
   Switch,
   Toolbar,
 } from "@suid/material";
 import {
   Close as CloseIcon,
+  Logout,
+  Public as PublicIcon,
   Refresh as RefreshIcon,
+  Translate as TranslateIcon,
 } from "@suid/icons-material";
 import { useNavigate } from "@solidjs/router";
 import { Title } from "../material/typography.jsx";
 import { css } from "solid-styled";
 import { useSignedInProfiles } from "../masto/acct.js";
 import { signOut, type Account } from "../accounts/stores.js";
-import { intlFormat } from "date-fns";
+import { format } from "date-fns";
 import { useStore } from "@nanostores/solid";
 import { $settings } from "./stores.js";
 import { useRegisterSW } from "virtual:pwa-register/solid";
+import {
+  autoMatchLangTag,
+  autoMatchRegion,
+  createTranslator,
+  SUPPORTED_LANGS,
+  SUPPORTED_REGIONS,
+  useDateFnLocale,
+} from "../platform/i18n.jsx";
+import { type Template } from "@solid-primitives/i18n";
+import BottomSheet from "../material/BottomSheet.jsx";
+import ChooseLang from "./ChooseLang.jsx";
+import ChooseRegion from "./ChooseRegion.jsx";
+
+type Strings = {
+  ["lang.auto"]: Template<{ detected: string }>;
+} & Record<string, string | undefined>;
 
 const Settings: ParentComponent = () => {
+  const [t] = createTranslator(
+    (code) =>
+      import(`./i18n/${code}.json`) as Promise<{
+        default: Strings;
+      }>,
+    () => import(`./i18n/lang-names.json`),
+  );
   const navigate = useNavigate();
   const settings$ = useStore($settings);
   const {
     needRefresh: [needRefresh],
   } = useRegisterSW();
+  const dateFnLocale = useDateFnLocale();
+  const [langPickerOpen, setLangPickerOpen] = createSignal(false);
+  const [regionPickerOpen, setRegionPickerOpen] = createSignal(false);
 
   const [profiles] = useSignedInProfiles();
 
@@ -60,7 +91,7 @@ const Settings: ParentComponent = () => {
             <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
               <CloseIcon />
             </IconButton>
-            <Title>Settings</Title>
+            <Title>{t("Settings")}</Title>
           </Toolbar>
         </AppBar>
       }
@@ -68,32 +99,35 @@ const Settings: ParentComponent = () => {
       <List class="setting-list" use:solid-styled>
         <li>
           <ul>
-            <ListSubheader>Accounts</ListSubheader>
+            <ListSubheader>{t("Accounts")}</ListSubheader>
-            <ListItem>
+            <ListItemButton disabled>
-              <ListItemText>All Notifications</ListItemText>
+              <ListItemText>{t("All Notifications")}</ListItemText>
               <ListItemSecondaryAction>
-                <Switch value={false} />
+                <Switch value={false} disabled />
               </ListItemSecondaryAction>
-            </ListItem>
+            </ListItemButton>
             <Divider />
-            <ListItem>
+            <ListItemButton disabled>
-              <ListItemText>Sign in...</ListItemText>
+              <ListItemText>{t("Sign in...")}</ListItemText>
-            </ListItem>
+            </ListItemButton>
             <Divider />
           </ul>
           <For each={profiles()}>
             {({ account: acct, inf }) => (
               <ul data-site={acct.site} data-username={inf?.username}>
                 <ListSubheader>{`@${inf?.username ?? "..."}@${new URL(acct.site).host}`}</ListSubheader>
-                <ListItem>
+                <ListItemButton disabled>
-                  <ListItemText>Notifications</ListItemText>
+                  <ListItemText>{t("Notifications")}</ListItemText>
                   <ListItemSecondaryAction>
-                    <Switch value={false} />
+                    <Switch value={false} disabled />
                   </ListItemSecondaryAction>
-                </ListItem>
+                </ListItemButton>
                 <Divider />
                 <ListItemButton onClick={[doSignOut, acct]}>
-                  <ListItemText>Sign out</ListItemText>
+                  <ListItemIcon>
+                    <Logout />
+                  </ListItemIcon>
+                  <ListItemText>{t("Sign out")}</ListItemText>
                 </ListItemButton>
                 <Divider />
               </ul>
@@ -101,12 +135,8 @@ const Settings: ParentComponent = () => {
           </For>
         </li>
         <li>
-          <ListSubheader>Reading</ListSubheader>
+          <ListSubheader>{t("Reading")}</ListSubheader>
-          <ListItem>
+          <ListItemButton
-            <ListItemText secondary="Regular">Fonts</ListItemText>
-          </ListItem>
-          <Divider />
-          <ListItem
             onClick={(e) =>
               $settings.setKey(
                 "prefetchTootsDisabled",
@@ -114,34 +144,93 @@ const Settings: ParentComponent = () => {
               )
             }
           >
-            <ListItemText secondary="Tutu will download toots before you scroll to the position.">
+            <ListItemText secondary={t("Prefetch Toots.2nd")}>
-              Prefetch Toots
+              {t("Prefetch Toots")}
             </ListItemText>
             <ListItemSecondaryAction>
               <Switch checked={!settings$().prefetchTootsDisabled} />
             </ListItemSecondaryAction>
-          </ListItem>
+          </ListItemButton>
           <Divider />
         </li>
         <li>
-          <ListSubheader>This Application</ListSubheader>
+          <ListSubheader>{t("This Application")}</ListSubheader>
+          <ListItemButton onClick={[setLangPickerOpen, true]}>
+            <ListItemIcon>
+              <TranslateIcon />
+            </ListItemIcon>
+            <ListItemText
+              secondary={
+                settings$().language === undefined
+                  ? t("lang.auto", {
+                      detected:
+                        t("lang." + autoMatchLangTag()) ?? autoMatchLangTag(),
+                    })
+                  : t("lang." + settings$().language)
+              }
+            >
+              {t("Language")}
+            </ListItemText>
+          </ListItemButton>
+          <BottomSheet open={langPickerOpen()}>
+            <ChooseLang
+              code={settings$().language}
+              onCodeChange={(nval) => $settings.setKey("language", nval)}
+              onClose={[setLangPickerOpen, false]}
+            />
+          </BottomSheet>
+          <Divider />
+          <ListItemButton onClick={[setRegionPickerOpen, true]}>
+            <ListItemIcon>
+              <PublicIcon />
+            </ListItemIcon>
+            <ListItemText
+              secondary={
+                settings$().region === undefined
+                  ? t("region.auto", {
+                      detected:
+                        t("region." + autoMatchRegion()) ?? autoMatchRegion(),
+                    })
+                  : t("region." + settings$().region)
+              }
+            >
+              {t("Region")}
+            </ListItemText>
+          </ListItemButton>
+          <BottomSheet open={regionPickerOpen()}>
+            <ChooseRegion
+              code={settings$().region}
+              onCodeChange={(nval) => $settings.setKey("region", nval)}
+              onClose={[setRegionPickerOpen, false]}
+            />
+          </BottomSheet>
+          <Divider />
           <ListItem>
-            <ListItemText secondary="Comformtable tooting experience.">
+            <ListItemText secondary={t("About Tutu.2nd")}>
-              About Tutu
+              {t("About Tutu")}
             </ListItemText>
           </ListItem>
           <Divider />
           <ListItem>
             <ListItemText
-              secondary={`Using v${import.meta.env.PACKAGE_VERSION} (built on ${intlFormat(import.meta.env.BUILT_AT)}, ${import.meta.env.MODE})`}
+              secondary={t("version", {
+                packageVersion: import.meta.env.PACKAGE_VERSION,
+                builtAt: format(
+                  import.meta.env.BUILT_AT,
+                  t("datefmt") || "yyyy/MM/dd",
+                  { locale: dateFnLocale() },
+                ),
+                buildMode: import.meta.env.MODE,
+              })}
             >
-              {needRefresh()
+              {needRefresh() ? t("updates.ready") : t("updates.no")}
-                ? "An update is ready, restart the Tutu to apply"
-                : "No updates"}
             </ListItemText>
             <Show when={needRefresh()}>
               <ListItemSecondaryAction>
-                <IconButton aria-label="Restart Now" onClick={() => window.location.reload()}>
+                <IconButton
+                  aria-label="Restart Now"
+                  onClick={() => window.location.reload()}
+                >
                   <RefreshIcon />
                 </IconButton>
               </ListItemSecondaryAction>

src/settings/i18n/en.json

@@ -0,0 +1,30 @@
+{
+  "Settings": "Settings",
+  "Accounts": "Accounts",
+  "All Notifications": "All Notifications",
+  "Sign in...": "Sign in...",
+  "Reading": "Reading",
+  "Prefetch Toots": "Prefetch Toots",
+  "Prefetch Toots.2nd": "Tutu will download the toots before you need.",
+  "This Application": "This Application",
+  "About Tutu": "About Tutu",
+  "About Tutu.2nd": "Comfortable tooting experience.",
+  "updates.ready": "An update is ready, restart the Tutu to apply",
+  "updates.no": "No updates",
+  "version": "Using v{{packageVersion}} (built on {{builtAt}}, {{buildMode}})",
+  "Language": "Language",
+  "Region": "Region",
+  "lang.auto": "(Auto) {{detected}}",
+  "region.auto": "(Auto) {{detected}}",
+  "region.en_GB": "Great Britan (English)",
+  "region.en_US": "United States (English)",
+  "region.zh_CN": "China Mainland (Chinese)",
+  "datefmt": "yyyy/MM/dd",
+  "Sign out": "Sign out",
+  "Notifications": "Notifications",
+
+  "Choose Language": "Choose Language",
+  "Supported": "Supported",
+  "Unsupported": "Unsupported",
+  "Choose Region": "Choose Region"
+}

src/settings/i18n/lang-names.json

@@ -0,0 +1,4 @@
+{
+  "lang.zh-Hans": "中文（简体）",
+  "lang.en": "English"
+}

src/settings/i18n/zh-Hans.json

@@ -0,0 +1,30 @@
+{
+  "Settings": "设置",
+  "Accounts": "所有账户",
+  "All Notifications": "所有通知",
+  "Sign in...": "登录新账户...",
+  "Reading": "阅读",
+  "Prefetch Toots": "提前下载嘟文",
+  "Prefetch Toots.2nd": "图图会在你可能需要的时候提前下载嘟文。",
+  "This Application": "本应用",
+  "About Tutu": "关于图图",
+  "About Tutu.2nd": "舒服地刷嘟。",
+  "updates.ready": "更新已准备好，下次开启会启动新版本",
+  "updates.no": "已是最新版本",
+  "version": "正在使用 v{{packageVersion}} ({{builtAt}}构建, {{buildMode}})",
+  "Language": "语言",
+  "Region": "区域",
+  "lang.auto": "（自动）{{detected}}",
+  "region.auto": "（自动）{{detected}}",
+  "region.en_GB": "英国和苏格兰（英语）",
+  "region.en_US": "美国（英语）",
+  "region.zh_CN": "中国大陆（中文）",
+  "datefmt": "yyyy年MM月dd日",
+  "Sign out": "登出此账户",
+  "Notifications": "通知",
+
+  "Choose Language": "选择语言",
+  "Supported": "已支持",
+  "Unsupported": "尚未支持",
+  "Choose Region": "选择区域"
+}

src/settings/stores.ts

@@ -3,6 +3,8 @@ import { persistentMap } from "@nanostores/persistent";
 type Settings = {
   onGoingOAuth2Process?: string;
   prefetchTootsDisabled?: boolean;
+  language?: string;
+  region?: string;
 };
 
 export const $settings = persistentMap<Settings>(

src/timelines/Home.tsx

@@ -10,7 +10,8 @@ import {
   children,
   Suspense,
   Match,
-  Switch as JsSwitch
+  Switch as JsSwitch,
+  ErrorBoundary
 } from "solid-js";
 import { useDocumentTitle } from "../utils";
 import { type mastodon } from "masto";
@@ -125,7 +126,9 @@ const TimelinePanel: Component<{
   };
 
   return (
-    <>
+    <ErrorBoundary fallback={(err, reset) => {
+      return <p>Oops: {String(err)}</p>
+    }}>
       <PullDownToRefresh
         linkedElement={scrollLinked()}
         loading={snapshot.loading}
@@ -202,7 +205,7 @@ const TimelinePanel: Component<{
           </Match>
         </JsSwitch>
       </div>
-    </>
+    </ErrorBoundary>
   );
 };
 

src/timelines/RegularToot.tsx

@@ -36,6 +36,7 @@ import Button from "../material/Button.js";
 import MediaAttachmentGrid from "./MediaAttachmentGrid.js";
 import { FastAverageColor } from "fast-average-color";
 import Color from "colorjs.io";
+import { useDateFnLocale } from "../platform/i18n";
 
 type TootContentViewProps = {
   source?: string;
@@ -170,6 +171,7 @@ function TootActionGroup<T extends mastodon.v1.Status>(
 
 function TootAuthorGroup(props: { status: mastodon.v1.Status; now: Date }) {
   const toot = () => props.status;
+  const dateFnLocale = useDateFnLocale()
 
   return (
     <div class={tootStyle.tootAuthorGrp}>
@@ -187,7 +189,7 @@ function TootAuthorGroup(props: { status: mastodon.v1.Status; now: Date }) {
           }}
         />
         <time datetime={toot().createdAt}>
-          {formatRelative(toot().createdAt, props.now)}
+          {formatRelative(toot().createdAt, props.now, {locale: dateFnLocale()})}
         </time>
         <span>
           @{toot().account.username}@{new URL(toot().account.url).hostname}

tsconfig.json

@@ -11,5 +11,6 @@
     "types": ["vite/client", "vite-plugin-pwa/solid"],
     "noEmit": true,
     "isolatedModules": true,
+    "resolveJsonModule": true,
   }
 }