import "dotenv/config";
import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";

import { signAccessToken } from "@/features/auth/authCrypto";

const BASE_URL = "http://localhost";

// in-memory Prisma 목 데이터
const inMemoryProjects: any[] = [];
const inMemorySubmissions: any[] = [];

vi.mock("@prisma/client", () => {
  class PrismaClientMock {
    project = {
      findMany: async ({ where }: any) => {
        if (!where || !where.userId) return [];
        return inMemoryProjects.filter((p) => p.userId === where.userId);
      },
    };

    formSubmission = {
      findMany: async ({ where }: any) => {
        if (!where || !where.userId) return [];
        return inMemorySubmissions.filter((s) => s.userId === where.userId);
      },
    };
  }

  return { PrismaClient: PrismaClientMock };
});

beforeEach(() => {
  inMemoryProjects.length = 0;
  inMemorySubmissions.length = 0;
  process.env.AUTH_JWT_SECRET = "test-jwt-secret-reports";
  process.env.AUTH_ENCRYPTION_KEY = "0123456789abcdef0123456789abcdef";

  vi.useFakeTimers();
  vi.setSystemTime(new Date("2025-01-10T00:00:00.000Z"));
});

afterEach(() => {
  vi.useRealTimers();
});

describe("/api/reports/overview", () => {
  it("range=all 에서 전체 프로젝트/제출 기준으로 summary/daily/byProject 를 집계해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const userId = "user-reports";

    inMemoryProjects.push(
      {
        id: "p1",
        userId,
        title: "Project A",
        slug: "project-a",
      },
      {
        id: "p2",
        userId,
        title: "Project B",
        slug: "project-b",
      },
    );

    inMemorySubmissions.push(
      {
        id: "s1",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-09T12:00:00.000Z"),
      },
      {
        id: "s2",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-05T09:00:00.000Z"),
      },
      {
        id: "s3",
        userId,
        projectId: "p2",
        projectSlug: "project-b",
        createdAt: new Date("2024-12-20T08:00:00.000Z"),
      },
    );

    const token = await signAccessToken({
      id: userId,
      email: "reports@example.com",
      tokenVersion: 1,
      emailVerified: true,
    } as any);

    const res = await reports(
      new Request(`${BASE_URL}/api/reports/overview?range=all`, {
        headers: { cookie: `pb_access=${token}` },
      }),
    );

    expect(res.status).toBe(200);
    const json = (await res.json()) as any;

    expect(json.summary.totalSubmissions).toBe(3);
    expect(json.summary.uniqueProjects).toBe(2);
    expect(json.summary.avgPerDay).toBeGreaterThan(0);

    expect(Array.isArray(json.daily)).toBe(true);
    expect(json.daily.length).toBe(3);

    expect(Array.isArray(json.byProject)).toBe(true);
    expect(json.byProject).toHaveLength(2);

    const byId: Record<string, any> = {};
    for (const row of json.byProject) {
      byId[row.projectId] = row;
    }

    expect(byId["p1"].submissions).toBe(2);
    expect(byId["p2"].submissions).toBe(1);
    expect(byId["p1"].ratio + byId["p2"].ratio).toBeCloseTo(1, 5);
  });

  it("range=7d 에서는 최근 7일간의 제출만 포함해 summary/daily/byProject 를 집계해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const userId = "user-reports-7d";

    inMemoryProjects.push({ id: "p1", userId, title: "Project A", slug: "project-a" });

    inMemorySubmissions.push(
      {
        id: "s1",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-09T12:00:00.000Z"), // within 7d
      },
      {
        id: "s2",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-01T12:00:00.000Z"), // older than 7d
      },
    );

    const token = await signAccessToken({
      id: userId,
      email: "reports7d@example.com",
      tokenVersion: 1,
      emailVerified: true,
    } as any);

    const res = await reports(
      new Request(`${BASE_URL}/api/reports/overview?range=7d`, {
        headers: { cookie: `pb_access=${token}` },
      }),
    );

    expect(res.status).toBe(200);
    const json = (await res.json()) as any;

    expect(json.summary.totalSubmissions).toBe(1);
    expect(json.summary.uniqueProjects).toBe(1);
    expect(json.daily).toHaveLength(1);
    expect(json.byProject).toHaveLength(1);
    expect(json.byProject[0].submissions).toBe(1);
  });

  it("projectId 를 지정하면 해당 프로젝트의 데이터만 포함해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const userId = "user-reports-project";

    inMemoryProjects.push(
      { id: "p1", userId, title: "Project A", slug: "project-a" },
      { id: "p2", userId, title: "Project B", slug: "project-b" },
    );

    inMemorySubmissions.push(
      {
        id: "s1",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-09T12:00:00.000Z"),
      },
      {
        id: "s2",
        userId,
        projectId: "p2",
        projectSlug: "project-b",
        createdAt: new Date("2025-01-09T15:00:00.000Z"),
      },
    );

    const token = await signAccessToken({
      id: userId,
      email: "reports-project@example.com",
      tokenVersion: 1,
      emailVerified: true,
    } as any);

    const res = await reports(
      new Request(`${BASE_URL}/api/reports/overview?range=all&projectId=p1`, {
        headers: { cookie: `pb_access=${token}` },
      }),
    );

    expect(res.status).toBe(200);
    const json = (await res.json()) as any;

    expect(json.summary.totalSubmissions).toBe(1);
    expect(json.summary.uniqueProjects).toBe(1);
    expect(json.byProject).toHaveLength(1);
    expect(json.byProject[0].projectId).toBe("p1");
  });

  it("range=all 에서 timePatterns 과 projectStatusSummary 를 함께 집계해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const userId = "user-reports-v2";

    inMemoryProjects.push(
      {
        id: "p1",
        userId,
        title: "Published Project",
        slug: "published-project",
        status: "PUBLISHED",
      },
      {
        id: "p2",
        userId,
        title: "Draft Project",
        slug: "draft-project",
        status: "DRAFT",
      },
    );

    // 3개의 제출: p1 에 2개, p2 에 1개, 서로 다른 시간대
    inMemorySubmissions.push(
      {
        id: "s1",
        userId,
        projectId: "p1",
        projectSlug: "published-project",
        createdAt: new Date("2025-01-09T01:00:00.000Z"),
      },
      {
        id: "s2",
        userId,
        projectId: "p1",
        projectSlug: "published-project",
        createdAt: new Date("2025-01-09T15:00:00.000Z"),
      },
      {
        id: "s3",
        userId,
        projectId: "p2",
        projectSlug: "draft-project",
        createdAt: new Date("2025-01-08T09:00:00.000Z"),
      },
    );

    const token = await signAccessToken({
      id: userId,
      email: "reports-v2@example.com",
      tokenVersion: 1,
      emailVerified: true,
    } as any);

    const res = await reports(
      new Request(`${BASE_URL}/api/reports/overview?range=all`, {
        headers: { cookie: `pb_access=${token}` },
      }),
    );

    expect(res.status).toBe(200);
    const json = (await res.json()) as any;

    expect(json.summary.totalSubmissions).toBe(3);

    // timePatterns
    expect(json.timePatterns).toBeDefined();
    expect(Array.isArray(json.timePatterns.byHour)).toBe(true);
    const sumByHour = (json.timePatterns.byHour as Array<{ hour: number; count: number }>).reduce(
      (sum, item) => sum + item.count,
      0,
    );
    expect(sumByHour).toBe(3);

    // projectStatusSummary
    expect(json.projectStatusSummary).toBeDefined();
    expect(Array.isArray(json.projectStatusSummary.byStatus)).toBe(true);
    const byStatus: Record<string, { projects: number; submissions: number }> = {};
    for (const row of json.projectStatusSummary.byStatus as Array<{
      status: string;
      projects: number;
      submissions: number;
    }>) {
      byStatus[row.status] = { projects: row.projects, submissions: row.submissions };
    }

    expect(byStatus["PUBLISHED"].projects).toBe(1);
    expect(byStatus["PUBLISHED"].submissions).toBe(2);
    expect(byStatus["DRAFT"].projects).toBe(1);
    expect(byStatus["DRAFT"].submissions).toBe(1);
  });

  it("from/to 쿼리로 커스텀 기간을 필터링해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const userId = "user-reports-from-to";

    inMemoryProjects.push({ id: "p1", userId, title: "Project A", slug: "project-a" });

    inMemorySubmissions.push(
      {
        id: "s1",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-01T12:00:00.000Z"),
      },
      {
        id: "s2",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-05T12:00:00.000Z"),
      },
      {
        id: "s3",
        userId,
        projectId: "p1",
        projectSlug: "project-a",
        createdAt: new Date("2025-01-09T12:00:00.000Z"),
      },
    );

    const token = await signAccessToken({
      id: userId,
      email: "reports-from-to@example.com",
      tokenVersion: 1,
      emailVerified: true,
    } as any);

    const res = await reports(
      new Request(`${BASE_URL}/api/reports/overview?from=2025-01-02&to=2025-01-08`, {
        headers: { cookie: `pb_access=${token}` },
      }),
    );

    expect(res.status).toBe(200);
    const json = (await res.json()) as any;

    expect(json.summary.totalSubmissions).toBe(1);
    expect(json.summary.uniqueProjects).toBe(1);
    expect(json.daily).toHaveLength(1);
    expect(json.daily[0].date).toBe("2025-01-05");
    expect(json.byProject).toHaveLength(1);
    expect(json.byProject[0].submissions).toBe(1);
  });

  it("JWT 가 없으면 401 을 반환해야 한다", async () => {
    const { GET: reports } = await import("@/app/api/reports/overview/route");

    const res = await reports(new Request(`${BASE_URL}/api/reports/overview?range=all`));

    expect(res.status).toBe(401);
  });
});