feat(i18n): add LanguageSwitcher and integrate with dashboard header

package.json

@@ -14,6 +14,7 @@
     "@radix-ui/react-collapsible": "^1.1.1",
     "@radix-ui/react-dialog": "^1.1.2",
     "@radix-ui/react-dropdown-menu": "^2.1.2",
+    "@radix-ui/react-select": "^2.1.2",
     "@radix-ui/react-separator": "^1.1.0",
     "@radix-ui/react-slot": "^1.1.0",
     "@radix-ui/react-tooltip": "^1.1.4",

src/app/dashboard/layout.tsx

@@ -6,16 +6,15 @@ import {
 import {
   Breadcrumb,
   BreadcrumbItem,
-  BreadcrumbLink,
   BreadcrumbList,
   BreadcrumbPage,
-  BreadcrumbSeparator,
 } from "@/components/ui/breadcrumb";
 import { SessionProvider } from "next-auth/react";
 import { AppSidebar } from "@/components/app-sidebar";
 import { Separator } from "@/components/ui/separator";
 import { ModeSwitcher } from "@/components/mode-switcher";
 import ConfirmationDialog from "@/dialogs/ConfirmationDialog";
+import LanguageSwitcher from "@/components/language-switcher";
 
 export default function DashboardLayout({
   children,
@@ -25,25 +24,24 @@ export default function DashboardLayout({
       <SidebarProvider>
         <AppSidebar />
         <SidebarInset>
-          <header className="flex h-16 shrink-0 items-center gap-2">
+          <header className="flex h-14 shrink-0 items-center gap-2">
-            <div className="flex items-center gap-2 px-4">
+            <div className="flex flex-1 items-center gap-2 px-3">
-              <SidebarTrigger className="-ml-1" />
+              <SidebarTrigger />
               <ModeSwitcher />
               <Separator orientation="vertical" className="mr-2 h-4" />
               <Breadcrumb>
                 <BreadcrumbList>
-                  <BreadcrumbItem className="hidden md:block">
-                    <BreadcrumbLink href="#">
-                      Building Your Application
-                    </BreadcrumbLink>
-                  </BreadcrumbItem>
-                  <BreadcrumbSeparator className="hidden md:block" />
                   <BreadcrumbItem>
-                    <BreadcrumbPage>Data Fetching</BreadcrumbPage>
+                    <BreadcrumbPage className="line-clamp-1">
+                      Project Management & Task Tracking
+                    </BreadcrumbPage>
                   </BreadcrumbItem>
                 </BreadcrumbList>
               </Breadcrumb>
             </div>
+            <div className="ml-auto px-3">
+              <LanguageSwitcher />
+            </div>
           </header>
           {children}
         </SidebarInset>

src/components/language-switcher.tsx

@@ -0,0 +1,36 @@
+import { auth } from "@/auth";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+
+const languages = [
+  { value: "en-US", label: "English (United States)", flag: "🇺🇸" },
+  { value: "zh-CN", label: "简体中文", flag: "🇨🇳" },
+];
+
+export default async function LanguageSwitcher() {
+  const session = await auth();
+  const defaultLanguage = session?.user?.language || "en-US";
+
+  return (
+    <div className="space-y-2">
+      <Select defaultValue={defaultLanguage}>
+        <SelectTrigger className="[&>span]:flex [&>span]:items-center [&>span]:gap-2 [&>span_svg]:shrink-0 [&>span_svg]:text-muted-foreground/80">
+          <SelectValue placeholder="Select language" />
+        </SelectTrigger>
+        <SelectContent className="[&_*[role=option]>span>svg]:shrink-0 [&_*[role=option]>span>svg]:text-muted-foreground/80 [&_*[role=option]>span]:end-2 [&_*[role=option]>span]:start-auto [&_*[role=option]>span]:flex [&_*[role=option]>span]:items-center [&_*[role=option]>span]:gap-2 [&_*[role=option]]:pe-8 [&_*[role=option]]:ps-2">
+          {languages.map((item) => (
+            <SelectItem key={item.value} value={item.value}>
+              <span className="text-lg leading-none">{item.flag}</span>{" "}
+              <span className="truncate">{item.label}</span>
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </div>
+  );
+}

src/components/ui/select.tsx

@@ -0,0 +1,159 @@
+"use client"
+
+import * as React from "react"
+import * as SelectPrimitive from "@radix-ui/react-select"
+import { Check, ChevronDown, ChevronUp } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+const Select = SelectPrimitive.Root
+
+const SelectGroup = SelectPrimitive.Group
+
+const SelectValue = SelectPrimitive.Value
+
+const SelectTrigger = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Trigger>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Trigger>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Trigger
+    ref={ref}
+    className={cn(
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
+      className
+    )}
+    {...props}
+  >
+    {children}
+    <SelectPrimitive.Icon asChild>
+      <ChevronDown className="h-4 w-4 opacity-50" />
+    </SelectPrimitive.Icon>
+  </SelectPrimitive.Trigger>
+))
+SelectTrigger.displayName = SelectPrimitive.Trigger.displayName
+
+const SelectScrollUpButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollUpButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollUpButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollUpButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronUp className="h-4 w-4" />
+  </SelectPrimitive.ScrollUpButton>
+))
+SelectScrollUpButton.displayName = SelectPrimitive.ScrollUpButton.displayName
+
+const SelectScrollDownButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollDownButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollDownButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollDownButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronDown className="h-4 w-4" />
+  </SelectPrimitive.ScrollDownButton>
+))
+SelectScrollDownButton.displayName =
+  SelectPrimitive.ScrollDownButton.displayName
+
+const SelectContent = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Content>
+>(({ className, children, position = "popper", ...props }, ref) => (
+  <SelectPrimitive.Portal>
+    <SelectPrimitive.Content
+      ref={ref}
+      className={cn(
+        "relative z-50 max-h-96 min-w-[8rem] overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        position === "popper" &&
+          "data-[side=bottom]:translate-y-1 data-[side=left]:-translate-x-1 data-[side=right]:translate-x-1 data-[side=top]:-translate-y-1",
+        className
+      )}
+      position={position}
+      {...props}
+    >
+      <SelectScrollUpButton />
+      <SelectPrimitive.Viewport
+        className={cn(
+          "p-1",
+          position === "popper" &&
+            "h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]"
+        )}
+      >
+        {children}
+      </SelectPrimitive.Viewport>
+      <SelectScrollDownButton />
+    </SelectPrimitive.Content>
+  </SelectPrimitive.Portal>
+))
+SelectContent.displayName = SelectPrimitive.Content.displayName
+
+const SelectLabel = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Label>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Label>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Label
+    ref={ref}
+    className={cn("px-2 py-1.5 text-sm font-semibold", className)}
+    {...props}
+  />
+))
+SelectLabel.displayName = SelectPrimitive.Label.displayName
+
+const SelectItem = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Item>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Item
+    ref={ref}
+    className={cn(
+      "relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-2 pr-8 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
+      className
+    )}
+    {...props}
+  >
+    <span className="absolute right-2 flex h-3.5 w-3.5 items-center justify-center">
+      <SelectPrimitive.ItemIndicator>
+        <Check className="h-4 w-4" />
+      </SelectPrimitive.ItemIndicator>
+    </span>
+    <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
+  </SelectPrimitive.Item>
+))
+SelectItem.displayName = SelectPrimitive.Item.displayName
+
+const SelectSeparator = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Separator>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Separator>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Separator
+    ref={ref}
+    className={cn("-mx-1 my-1 h-px bg-muted", className)}
+    {...props}
+  />
+))
+SelectSeparator.displayName = SelectPrimitive.Separator.displayName
+
+export {
+  Select,
+  SelectGroup,
+  SelectValue,
+  SelectTrigger,
+  SelectContent,
+  SelectLabel,
+  SelectItem,
+  SelectSeparator,
+  SelectScrollUpButton,
+  SelectScrollDownButton,
+}