feat: categories carousel

apps/api/src/trpc/routers/_app.ts

@@ -3,12 +3,14 @@ import type { inferRouterInputs, inferRouterOutputs } from "@trpc/server";
 import { createTRPCRouter } from "#api/trpc/init";
 import { articlesRouter } from "#api/trpc/routers/articles";
 import { authRouter } from "#api/trpc/routers/auth";
+import { categoriesRouter } from "#api/trpc/routers/categories";
 import { reportsRouter } from "#api/trpc/routers/reports";
 import { sourcesRouter } from "#api/trpc/routers/sources";
 
 export const appRouter = createTRPCRouter({
   articles: articlesRouter,
   auth: authRouter,
+  categories: categoriesRouter,
   reports: reportsRouter,
   sources: sourcesRouter,
 });

apps/api/src/trpc/routers/categories.ts

@@ -0,0 +1,7 @@
+import { getCategories } from "@basango/db/queries";
+
+import { createTRPCRouter, protectedProcedure } from "#api/trpc/init";
+
+export const categoriesRouter = createTRPCRouter({
+  list: protectedProcedure.query(async ({ ctx }) => getCategories(ctx.db)),
+});

apps/dashboard/src/app/[locale]/(app)/(sidebar)/articles/page.tsx

@@ -9,6 +9,7 @@ export const metadata: Metadata = {
 };
 
 export default function Page() {
+  prefetch(trpc.categories.list.queryOptions());
   prefetch(trpc.articles.list.infiniteQueryOptions({ limit: 12 }));
 
   return (

apps/dashboard/src/app/[locale]/(app)/(sidebar)/sources/[id]/page.tsx

@@ -20,6 +20,7 @@ export default async function Page({ params }: { params: Promise<{ id: string }>
     trpc.sources.getById.queryOptions({ id }),
     trpc.sources.getCategoryShares.queryOptions({ id, limit: 10 }),
     trpc.sources.getPublications.queryOptions({ id }),
+    trpc.categories.list.queryOptions(),
     trpc.articles.list.infiniteQueryOptions({ limit: 12, sourceId: id }),
   ]);
 

apps/dashboard/src/components/articles-feed.tsx

@@ -9,6 +9,7 @@ import * as React from "react";
 import { useTRPC } from "#dashboard/trpc/client";
 
 import { ArticleCard, ArticleCardSkeleton } from "./article-card";
+import { CategoriesCarousel } from "./categories-carousel";
 
 type ArticlesTableProps = {
   sourceId?: string;
@@ -18,10 +19,16 @@ const PLACEHOLDER_COUNT = 8;
 
 export function ArticlesFeed({ sourceId }: ArticlesTableProps) {
   const trpc = useTRPC();
+  const [selectedCategory, setSelectedCategory] = React.useState<string | null>(null);
+
+  const handleCategorySelect = React.useCallback((categoryId: string | null) => {
+    setSelectedCategory((current) => (current === categoryId ? null : categoryId));
+  }, []);
 
   const query = useInfiniteQuery(
     trpc.articles.list.infiniteQueryOptions(
       {
+        category: selectedCategory ?? undefined,
         limit: 12,
         sourceId,
       },
@@ -41,6 +48,8 @@ export function ArticlesFeed({ sourceId }: ArticlesTableProps) {
 
   return (
     <div className="space-y-4">
+      <CategoriesCarousel onSelect={handleCategorySelect} selectedCategory={selectedCategory} />
+
       {query.isError && (
         <Alert variant="destructive">
           <AlertTitle>Unable to load articles</AlertTitle>

apps/dashboard/src/components/categories-carousel.tsx

@@ -0,0 +1,93 @@
+"use client";
+
+import {
+  Carousel,
+  CarouselContent,
+  CarouselItem,
+  CarouselNext,
+  CarouselPrevious,
+} from "@basango/ui/components/carousel";
+import { Skeleton } from "@basango/ui/components/skeleton";
+import { cn } from "@basango/ui/lib/utils";
+import { useQuery } from "@tanstack/react-query";
+import * as React from "react";
+
+import { useTRPC } from "#dashboard/trpc/client";
+
+type Props = {
+  onSelect: (categoryId: string | null) => void;
+  selectedCategory: string | null;
+};
+
+const PLACEHOLDER_COUNT = 10;
+
+export function CategoriesCarousel({ onSelect, selectedCategory }: Props) {
+  const trpc = useTRPC();
+  const { data, isLoading } = useQuery(trpc.categories.list.queryOptions());
+  const categories = data ?? [];
+  const showSkeletons = isLoading && categories.length === 0;
+
+  return (
+    <div className="relative">
+      <Carousel
+        className="w-full"
+        opts={{
+          align: "start",
+          containScroll: "trimSnaps",
+          dragFree: true,
+        }}
+      >
+        <CarouselContent className="-ml-2">
+          <CarouselItem className="basis-auto pl-2">
+            <CategoryPill active={!selectedCategory} onClick={() => onSelect(null)}>
+              All
+            </CategoryPill>
+          </CarouselItem>
+          {showSkeletons
+            ? Array.from({ length: PLACEHOLDER_COUNT }).map((_, index) => (
+                <CarouselItem className="basis-auto pl-2" key={`category-skeleton-${index}`}>
+                  <Skeleton className="h-8 w-20 rounded-full bg-muted/70" />
+                </CarouselItem>
+              ))
+            : categories.map((category) => (
+                <CarouselItem className="basis-auto pl-2" key={category.id}>
+                  <CategoryPill
+                    active={selectedCategory === category.id}
+                    onClick={() => onSelect(category.id)}
+                  >
+                    {category.name}
+                  </CategoryPill>
+                </CarouselItem>
+              ))}
+        </CarouselContent>
+        <CarouselPrevious className="hidden md:flex" size="icon" />
+        <CarouselNext className="hidden md:flex" size="icon" />
+      </Carousel>
+    </div>
+  );
+}
+
+type CategoryPillProps = {
+  active?: boolean;
+  children: React.ReactNode;
+  onClick: () => void;
+};
+
+function CategoryPill({ active, children, onClick }: CategoryPillProps) {
+  return (
+    <button
+      aria-pressed={active}
+      className={cn(
+        "shrink-0 rounded-full border px-3 py-1.5 text-sm font-medium transition",
+        "focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
+        active
+          ? "border-foreground bg-foreground text-background shadow-sm"
+          : "border-border bg-muted/60 text-foreground hover:border-foreground/60",
+      )}
+      onClick={onClick}
+      type="button"
+    >
+      {children}
+    </button>
+  );
+}