This is a Next.js project bootstrapped with create-next-app.

Getting Started

First, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

Open http://localhost:3000 with your browser to see the result.

You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.

This project uses next/font to automatically optimize and load Geist, a new font family for Vercel.

Learn More

To learn more about Next.js, take a look at the following resources:

• Next.js Documentation - learn about Next.js features and API.
• Learn Next.js - an interactive Next.js tutorial.

You can check out the Next.js GitHub repository - your feedback and contributions are welcome!

Deploy on Vercel

The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.

Check out our Next.js deployment documentation for more details.

Supabase Authentication

The app now relies on Supabase Auth to protect the discovery experience and keep the beta invitation-only.

• /login renders a combined Google + email/password login form that issues OAuth redirects to /auth/callback.
• /auth/callback exchanges Supabase codes for sessions and redirects users back to the requested path.
• /waitlist shows a holding page for accounts that are not on the allowed-email list.
• src/middleware.ts uses @supabase/ssr to guard /, redirect unauthenticated users to /login, and send everyone without an allowed email to /waitlist.
• A logout button on the home screen links back to /login so testers can switch accounts.

Required environment variables for authentication:

NEXT_PUBLIC_SUPABASE_URL=<your-supabase-url>
NEXT_PUBLIC_SUPABASE_ANON_KEY=<your-supabase-anon-key>
ALLOWED_EMAILS=user@example.com

ALLOWED_EMAILS should be a comma-separated list of addresses allowed to sign in while the closed beta is running.

テスト

このプロジェクトは Jest を使用してテストを実行します。

テスト実行方法

# すべてのテストを実行
npm test

# カバレッジ付きで実行
npm run test:coverage

# ウォッチモードで実行
npm run test:watch

環境変数の設定

テストを実行するには、以下の環境変数が必要です：

NEXT_PUBLIC_SUPABASE_URL=<your-supabase-url>
NEXT_PUBLIC_SUPABASE_ANON_KEY=<your-supabase-anon-key>
TRACK_POOL_MAX_SIZE=10

/api/tracks/random は DB 側の get_random_tracks RPC を service_role のみ実行可能にしているため、 サーバー実行環境（本番/Vercel、E2E 実行時など）には追加で以下が必要です：

SUPABASE_SERVICE_ROLE_KEY=<your-supabase-service-role-key>

詳細は src/lib/tests/README.md を参照してください。

テストカバレッジ目標

• 全体: 80% 以上
• 重要な関数: 100%

現在のカバレッジ:

• src/lib/refill-methods/chart.ts: 93.47% (statements), 95.34% (lines)