import { INestApplication } from "@nestjs/common";
import { getRepositoryToken } from "@nestjs/typeorm";
import { Repository } from "typeorm";
import request from "supertest";
import { buildTestApp } from "./app.harness";
import { SessionEntity } from "../src/session/session.entity";

describe("SessionController", () => {
  let app: INestApplication;
  let repo: Repository<SessionEntity>;

  beforeAll(async () => {
    app = await buildTestApp();
    repo = app.get<Repository<SessionEntity>>(
      getRepositoryToken(SessionEntity),
    );
  });

  afterAll(async () => {
    await app.close();
  });

  async function seedSession(name: string) {
    return repo.save(
      repo.create({
        sessionName: name,
        token: "tok",
        cookies: "[]",
        localStorage: "{}",
      }),
    );
  }

  // ── GET /sessions ──────────────────────────────────────────────────────────

  describe("GET /sessions", () => {
    it("returns 200 with a paginated result", async () => {
      const res = await request(app.getHttpServer())
        .get("/sessions")
        .expect(200);
      expect(Array.isArray(res.body.data)).toBe(true);
      expect(typeof res.body.total).toBe("number");
      expect(res.body).toHaveProperty("page");
      expect(res.body).toHaveProperty("limit");
    });

    it("includes seeded sessions", async () => {
      await seedSession("visible-session");
      const res = await request(app.getHttpServer())
        .get("/sessions")
        .expect(200);
      const names = res.body.data.map(
        (s: { sessionName: string }) => s.sessionName,
      );
      expect(names).toContain("visible-session");
    });

    it("does not expose token, cookies or localStorage fields", async () => {
      await seedSession("private-session");
      const res = await request(app.getHttpServer())
        .get("/sessions")
        .expect(200);
      const item = res.body.data.find(
        (s: { sessionName: string }) => s.sessionName === "private-session",
      ) as Record<string, unknown>;
      expect(item).toBeDefined();
      expect(item.token).toBeUndefined();
      expect(item.cookies).toBeUndefined();
      expect(item.localStorage).toBeUndefined();
    });

    it("respects page and limit params", async () => {
      await seedSession("paged-session-a");
      await seedSession("paged-session-b");

      const res = await request(app.getHttpServer())
        .get("/sessions?page=1&limit=1")
        .expect(200);
      expect(res.body.data).toHaveLength(1);
      expect(res.body.page).toBe(1);
      expect(res.body.limit).toBe(1);
    });

    it("returns empty data array for out-of-range page", async () => {
      const res = await request(app.getHttpServer())
        .get("/sessions?page=9999&limit=20")
        .expect(200);
      expect(res.body.data).toHaveLength(0);
    });

    it("returns 400 for invalid page param", async () => {
      await request(app.getHttpServer()).get("/sessions?page=0").expect(400);
    });

    it("orders by sessionName ASC", async () => {
      await seedSession("zzz-sort-session");
      await seedSession("aaa-sort-session");

      const res = await request(app.getHttpServer())
        .get("/sessions?orderBy=sessionName&orderDir=ASC")
        .expect(200);
      const names: string[] = res.body.data.map(
        (s: { sessionName: string }) => s.sessionName,
      );
      expect(names).toEqual([...names].sort());
    });

    it("orders by sessionName DESC", async () => {
      const res = await request(app.getHttpServer())
        .get("/sessions?orderBy=sessionName&orderDir=DESC")
        .expect(200);
      const names: string[] = res.body.data.map(
        (s: { sessionName: string }) => s.sessionName,
      );
      expect(names).toEqual([...names].sort().reverse());
    });

    it("returns 400 for invalid orderDir", async () => {
      await request(app.getHttpServer())
        .get("/sessions?orderDir=SIDEWAYS")
        .expect(400);
    });
  });

  // ── DELETE /sessions/:id ───────────────────────────────────────────────────

  describe("DELETE /sessions/:id", () => {
    it("deletes an existing session and returns 204", async () => {
      const s = await seedSession("delete-me-session");
      await request(app.getHttpServer())
        .delete(`/sessions/${s.id}`)
        .expect(204);

      const res = await request(app.getHttpServer())
        .get("/sessions")
        .expect(200);
      const names = res.body.data.map(
        (sess: { sessionName: string }) => sess.sessionName,
      );
      expect(names).not.toContain("delete-me-session");
    });

    it("returns 404 for unknown id", async () => {
      await request(app.getHttpServer())
        .delete("/sessions/00000000-0000-0000-0000-000000000001")
        .expect(404);
    });

    it("returns 400 for non-numeric id", async () => {
      await request(app.getHttpServer()).delete("/sessions/abc").expect(400);
    });
  });
});