대시보드, GNB 추가

src/app/api/dashboard/overview/route.ts

@@ -0,0 +1,220 @@
+import { NextResponse } from "next/server";
+import { PrismaClient } from "@prisma/client";
+import { verifyAccessToken } from "@/features/auth/authCrypto";
+
+// 대시보드 개요 API (/api/dashboard/overview)
+// - 로그인한 사용자의 프로젝트/폼 제출 통계를 집계해 요약/프로젝트별 지표를 반환한다.
+// - DB 스키마: Project, FormSubmission
+// - 인증: pb_access 쿠키(JWT)를 검증해 현재 사용자 식별
+
+const prisma = new PrismaClient();
+
+interface AuthUser {
+  id: string;
+  email: string;
+  tokenVersion: number;
+}
+
+// 공통: pb_access 쿠키에서 JWT 토큰을 추출한다.
+function extractTokenFromCookieHeader(cookieHeader: string | null): string | null {
+  if (!cookieHeader) return null;
+
+  const parts = cookieHeader.split(";");
+  for (const part of parts) {
+    const trimmed = part.trim();
+    if (trimmed.startsWith("pb_access=")) {
+      const value = trimmed.substring("pb_access=".length);
+      return decodeURIComponent(value);
+    }
+  }
+  return null;
+}
+
+// 공통: Request 헤더의 쿠키에서 인증된 유저 정보를 복원한다.
+async function getAuthUserFromRequest(request: Request): Promise<AuthUser | null> {
+  const cookieHeader = request.headers.get("cookie");
+  const token = extractTokenFromCookieHeader(cookieHeader);
+  if (!token) return null;
+
+  const payload = await verifyAccessToken(token);
+  if (!payload) return null;
+
+  return {
+    id: payload.sub,
+    email: payload.email,
+    tokenVersion: payload.tokenVersion,
+  };
+}
+
+interface SummaryStats {
+  totalProjects: number;
+  totalSubmissions: number;
+  todaySubmissions: number;
+  last7DaysSubmissions: number;
+}
+
+interface DailySubmissionItem {
+  // 일별 제출 수 그래프를 위한 집계 데이터
+  date: string; // YYYY-MM-DD (UTC 기준)
+  count: number;
+}
+
+interface ProjectStatsItem {
+  projectId: string;
+  title: string;
+  slug: string;
+  status: string;
+  totalSubmissions: number;
+  lastSubmissionAt: string | null;
+}
+
+// GET /api/dashboard/overview
+// - 현재 로그인 사용자의 프로젝트 목록/폼 제출 내역을 조회해 통계를 계산한다.
+export async function GET(request: Request) {
+  const authUser = await getAuthUserFromRequest(request);
+  if (!authUser) {
+    return NextResponse.json(
+      { message: "대시보드를 조회하려면 로그인이 필요합니다." },
+      { status: 401 },
+    );
+  }
+
+  try {
+    // 현재 사용자 소유 프로젝트와, 해당 사용자가 소유한 제출 내역을 한 번에 로드한다.
+    const [projects, submissions] = await Promise.all([
+      prisma.project.findMany({
+        where: { userId: authUser.id },
+        select: {
+          id: true,
+          title: true,
+          slug: true,
+          status: true,
+        },
+      }),
+      prisma.formSubmission.findMany({
+        where: { userId: authUser.id },
+        select: {
+          id: true,
+          projectId: true,
+          projectSlug: true,
+          createdAt: true,
+        },
+      }),
+    ]);
+
+    const totalProjects = projects.length;
+    const totalSubmissions = submissions.length;
+
+    // 오늘/최근 7일 기준 시각 계산
+    const now = new Date();
+    const startOfToday = new Date(now);
+    startOfToday.setHours(0, 0, 0, 0);
+    const sevenDaysAgo = new Date(now.getTime() - 7 * 24 * 60 * 60 * 1000);
+
+    let todaySubmissions = 0;
+    let last7DaysSubmissions = 0;
+
+    for (const submission of submissions) {
+      const createdAt = submission.createdAt instanceof Date
+        ? submission.createdAt
+        : new Date(submission.createdAt as unknown as string);
+
+      if (createdAt >= startOfToday) {
+        todaySubmissions += 1;
+      }
+
+      if (createdAt >= sevenDaysAgo) {
+        last7DaysSubmissions += 1;
+      }
+    }
+
+    // 프로젝트별 통계 맵을 구성한다.
+    const statsByProjectId = new Map<
+      string,
+      {
+        projectId: string;
+        title: string;
+        slug: string;
+        status: string;
+        totalSubmissions: number;
+        lastSubmissionAt: Date | null;
+      }
+    >();
+
+    for (const project of projects) {
+      statsByProjectId.set(project.id, {
+        projectId: project.id,
+        title: project.title,
+        slug: project.slug,
+        status: project.status,
+        totalSubmissions: 0,
+        lastSubmissionAt: null,
+      });
+    }
+
+    for (const submission of submissions) {
+      const stat = submission.projectId ? statsByProjectId.get(submission.projectId) : null;
+      if (!stat) continue;
+
+      stat.totalSubmissions += 1;
+
+      const createdAt = submission.createdAt instanceof Date
+        ? submission.createdAt
+        : new Date(submission.createdAt as unknown as string);
+
+      if (!stat.lastSubmissionAt || createdAt > stat.lastSubmissionAt) {
+        stat.lastSubmissionAt = createdAt;
+      }
+    }
+
+    const projectStats: ProjectStatsItem[] = Array.from(statsByProjectId.values()).map((item) => ({
+      projectId: item.projectId,
+      title: item.title,
+      slug: item.slug,
+      status: item.status,
+      totalSubmissions: item.totalSubmissions,
+      lastSubmissionAt: item.lastSubmissionAt ? item.lastSubmissionAt.toISOString() : null,
+    }));
+
+    const summaryStats: SummaryStats = {
+      totalProjects,
+      totalSubmissions,
+      todaySubmissions,
+      last7DaysSubmissions,
+    };
+
+    // 일별 전체 제출 수를 집계해 그래프용 데이터로 변환한다.
+    const countsByDate = new Map<string, number>();
+
+    for (const submission of submissions) {
+      const createdAt = submission.createdAt instanceof Date
+        ? submission.createdAt
+        : new Date(submission.createdAt as unknown as string);
+
+      const dateKey = createdAt.toISOString().slice(0, 10); // YYYY-MM-DD
+      const prev = countsByDate.get(dateKey) ?? 0;
+      countsByDate.set(dateKey, prev + 1);
+    }
+
+    const dailySubmissions: DailySubmissionItem[] = Array.from(countsByDate.entries())
+      .map(([date, count]) => ({ date, count }))
+      .sort((a, b) => a.date.localeCompare(b.date));
+
+    return NextResponse.json(
+      {
+        summaryStats,
+        projectStats,
+        dailySubmissions,
+      },
+      { status: 200 },
+    );
+  } catch (error: any) {
+    return NextResponse.json(
+      {
+        message: "대시보드 데이터를 계산하는 중 오류가 발생했습니다.",
+        error: error?.message,
+      },
+      { status: 500 },
+    );
+  }
+}