feat: とりあえずのアイテム追加を実現

app/components/ui/input.tsx

@@ -0,0 +1,25 @@
+import * as React from "react"
+
+import { cn } from "~/lib/utils"
+
+export interface InputProps
+  extends React.InputHTMLAttributes<HTMLInputElement> {}
+
+const Input = React.forwardRef<HTMLInputElement, InputProps>(
+  ({ className, type, ...props }, ref) => {
+    return (
+      <input
+        type={type}
+        className={cn(
+          "flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+          className
+        )}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Input.displayName = "Input"
+
+export { Input }

app/components/ui/label.tsx

@@ -0,0 +1,24 @@
+import * as React from "react"
+import * as LabelPrimitive from "@radix-ui/react-label"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "~/lib/utils"
+
+const labelVariants = cva(
+  "text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70"
+)
+
+const Label = React.forwardRef<
+  React.ElementRef<typeof LabelPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof LabelPrimitive.Root> &
+    VariantProps<typeof labelVariants>
+>(({ className, ...props }, ref) => (
+  <LabelPrimitive.Root
+    ref={ref}
+    className={cn(labelVariants(), className)}
+    {...props}
+  />
+))
+Label.displayName = LabelPrimitive.Root.displayName
+
+export { Label }

app/components/ui/radio-group.tsx

@@ -0,0 +1,42 @@
+import * as React from "react"
+import * as RadioGroupPrimitive from "@radix-ui/react-radio-group"
+import { Circle } from "lucide-react"
+
+import { cn } from "~/lib/utils"
+
+const RadioGroup = React.forwardRef<
+  React.ElementRef<typeof RadioGroupPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof RadioGroupPrimitive.Root>
+>(({ className, ...props }, ref) => {
+  return (
+    <RadioGroupPrimitive.Root
+      className={cn("grid gap-2", className)}
+      {...props}
+      ref={ref}
+    />
+  )
+})
+RadioGroup.displayName = RadioGroupPrimitive.Root.displayName
+
+const RadioGroupItem = React.forwardRef<
+  React.ElementRef<typeof RadioGroupPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof RadioGroupPrimitive.Item>
+>(({ className, ...props }, ref) => {
+  return (
+    <RadioGroupPrimitive.Item
+      ref={ref}
+      className={cn(
+        "aspect-square h-4 w-4 rounded-full border border-primary text-primary ring-offset-background focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50",
+        className
+      )}
+      {...props}
+    >
+      <RadioGroupPrimitive.Indicator className="flex items-center justify-center">
+        <Circle className="h-2.5 w-2.5 fill-current text-current" />
+      </RadioGroupPrimitive.Indicator>
+    </RadioGroupPrimitive.Item>
+  )
+})
+RadioGroupItem.displayName = RadioGroupPrimitive.Item.displayName
+
+export { RadioGroup, RadioGroupItem }

app/routes/items.tsx

@@ -1,5 +1,12 @@
-import type { MetaFunction } from "@remix-run/node";
+import type { ActionFunction, MetaFunction } from "@remix-run/node";
+import { Form } from "@remix-run/react";
+import { addDoc, collection } from "firebase/firestore";
 import useSWRSubscription from "swr/subscription";
+import { Button } from "~/components/ui/button";
+import { Input } from "~/components/ui/input";
+import { Label } from "~/components/ui/label";
+import { RadioGroup, RadioGroupItem } from "~/components/ui/radio-group";
+import { db } from "~/firebase/firestore";
 import { collectionSub } from "~/firebase/subscription";
 
 export const meta: MetaFunction = () => {
@@ -21,6 +28,51 @@ export default function Item() {
           </li>
         ))}
       </ul>
+      <Form method="post">
+        <Input type="text" name="name" placeholder="名前" />
+        <Input type="number" name="price" placeholder="価格" />
+        <RadioGroup name="type">
+          <div className="flex items-center space-x-2">
+            <RadioGroupItem value="hot" id="hot" />
+            <Label htmlFor="hot">ホット</Label>
+          </div>
+          <div className="flex items-center space-x-2">
+            <RadioGroupItem value="ice" id="ice" />
+            <Label htmlFor="ice">アイス</Label>
+          </div>
+          <div className="flex items-center space-x-2">
+            <RadioGroupItem value="ore" id="ore" />
+            <Label htmlFor="ore">オレ</Label>
+          </div>
+          <div className="flex items-center space-x-2">
+            <RadioGroupItem value="milk" id="milk" />
+            <Label htmlFor="milk">ミルク</Label>
+          </div>
+        </RadioGroup>
+        <Button type="submit">登録</Button>
+      </Form>
     </div>
   );
 }
+
+export const clientAction: ActionFunction = async ({ request }) => {
+  const formData = await request.formData();
+  const name = formData.get("name");
+  const price = formData.get("price");
+  const type = formData.get("type");
+
+  // あとでマシなバリデーションにする e.g. zod, conform
+  if (!(name && price && type)) {
+    return new Response("Bad Request", { status: 400 });
+  }
+
+  // あとでマシなエラーハンドリングにする & 処理を別ファイルに切り分ける
+  const docRef = await addDoc(collection(db, "items"), {
+    name,
+    price: Number(price),
+    type,
+  });
+
+  console.log("Document written with ID: ", docRef.id);
+  return new Response(null, { status: 204 });
+};

package.json

@@ -12,6 +12,8 @@
     "typecheck": "tsc"
   },
   "dependencies": {
+    "@radix-ui/react-label": "^2.1.0",
+    "@radix-ui/react-radio-group": "^1.2.0",
     "@radix-ui/react-slot": "^1.1.0",
     "@remix-run/node": "^2.11.0",
     "@remix-run/react": "^2.11.0",