치지직 앱으로 연동하고, 연동 확인된 ID만 접속할 수 있도록 수정, 개발용으로는 채널ID를 수동으로 접속할 수 있도록 변경.

최초 추천 고정 배치 추가.

lib/chzzk/oauth.ts

@@ -0,0 +1,89 @@
+import { getChzzkOAuthConfig } from '@/lib/auth/mode';
+
+const OPENAPI = 'https://openapi.chzzk.naver.com';
+
+export function buildChzzkLoginUrl(state: string) {
+  const { clientId, redirectUri } = getChzzkOAuthConfig();
+  const url = new URL('https://chzzk.naver.com/account-interlock');
+  url.searchParams.set('clientId', clientId);
+  url.searchParams.set('redirectUri', redirectUri);
+  url.searchParams.set('state', state);
+  return url.toString();
+}
+
+export async function exchangeAuthorizationCode(code: string, state: string) {
+  const { clientId, clientSecret } = getChzzkOAuthConfig();
+  const res = await fetch(`${OPENAPI}/auth/v1/token`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({
+      grantType: 'authorization_code',
+      clientId,
+      clientSecret,
+      code,
+      state,
+    }),
+    cache: 'no-store',
+  });
+  const json = (await res.json().catch(() => ({}))) as {
+    content?: {
+      accessToken?: string;
+      refreshToken?: string;
+      tokenType?: string;
+      expiresIn?: string | number;
+    };
+    message?: string;
+    code?: number;
+  };
+  if (!res.ok || !json.content?.accessToken) {
+    throw new Error(json.message || `토큰 발급 실패 (${res.status})`);
+  }
+  return {
+    accessToken: json.content.accessToken,
+    refreshToken: json.content.refreshToken ?? null,
+  };
+}
+
+export async function fetchAuthedUser(accessToken: string) {
+  const res = await fetch(`${OPENAPI}/open/v1/users/me`, {
+    headers: {
+      Authorization: `Bearer ${accessToken}`,
+      'Content-Type': 'application/json',
+    },
+    cache: 'no-store',
+  });
+  const json = (await res.json().catch(() => ({}))) as {
+    content?: { channelId?: string; channelName?: string };
+    message?: string;
+  };
+  if (!res.ok || !json.content?.channelId) {
+    throw new Error(json.message || `유저 정보 조회 실패 (${res.status})`);
+  }
+  return {
+    channelId: json.content.channelId.toLowerCase(),
+    channelName: json.content.channelName ?? null,
+  };
+}
+
+/** 확인 후 치지직 토큰 폐기 (저장하지 않음) */
+export async function revokeToken(
+  token: string,
+  tokenTypeHint: 'access_token' | 'refresh_token' = 'access_token',
+) {
+  const { clientId, clientSecret } = getChzzkOAuthConfig();
+  try {
+    await fetch(`${OPENAPI}/auth/v1/token/revoke`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        clientId,
+        clientSecret,
+        token,
+        tokenTypeHint,
+      }),
+      cache: 'no-store',
+    });
+  } catch {
+    // 폐기는 best-effort
+  }
+}