import { INestApplication } from "@nestjs/common";
import request from "supertest";
import { buildTestApp } from "./app.harness";

describe("EnvironmentController", () => {
  let app: INestApplication;

  beforeAll(async () => {
    app = await buildTestApp();
  });

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

  // ── POST /environments ─────────────────────────────────────────────────────

  describe("POST /environments", () => {
    it("creates an environment and returns 201", async () => {
      const res = await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-a", data: { id: "https://id.example.com" } })
        .expect(201);

      expect(res.body.id).toBeDefined();
      expect(res.body.name).toBe("env-a");
      expect(res.body.data.id).toBe("https://id.example.com");
    });

    it("returns 400 when name is missing", async () => {
      await request(app.getHttpServer())
        .post("/environments")
        .send({ data: { id: "https://id.example.com" } })
        .expect(400);
    });

    it("returns 400 when data is missing", async () => {
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-no-data" })
        .expect(400);
    });

    it("returns 400 when data is not an object", async () => {
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-bad-data", data: "not-an-object" })
        .expect(400);
    });

    it("returns 409 when name already exists", async () => {
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-duplicate", data: {} })
        .expect(201);

      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-duplicate", data: {} })
        .expect(409);
    });
  });

  // ── GET /environments ──────────────────────────────────────────────────────

  describe("GET /environments", () => {
    it("returns 200 with a paginated result", async () => {
      const res = await request(app.getHttpServer())
        .get("/environments")
        .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("respects page and limit params", async () => {
      // seed two extra environments
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-page-1", data: {} })
        .expect(201);
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-page-2", data: {} })
        .expect(201);

      const res = await request(app.getHttpServer())
        .get("/environments?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("/environments?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("/environments?page=0")
        .expect(400);
    });

    it("orders by name ASC", async () => {
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "zzz-env", data: {} });
      await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "aaa-env", data: {} });

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

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

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

  // ── GET /environments/:id ──────────────────────────────────────────────────

  describe("GET /environments/:id", () => {
    it("returns the created environment", async () => {
      const created = await request(app.getHttpServer())
        .post("/environments")
        .send({
          name: "env-get-one",
          data: { cabinet: "https://cabinet.example.com" },
        })
        .expect(201);

      const res = await request(app.getHttpServer())
        .get(`/environments/${created.body.id}`)
        .expect(200);

      expect(res.body.name).toBe("env-get-one");
    });

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

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

  // ── PATCH /environments/:id ────────────────────────────────────────────────

  describe("PATCH /environments/:id", () => {
    it("updates name and returns 200", async () => {
      const created = await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-patch-me", data: {} })
        .expect(201);

      const res = await request(app.getHttpServer())
        .patch(`/environments/${created.body.id}`)
        .send({ name: "env-patched" })
        .expect(200);

      expect(res.body.name).toBe("env-patched");
    });

    it("returns 404 for unknown id", async () => {
      await request(app.getHttpServer())
        .patch("/environments/00000000-0000-0000-0000-000000000001")
        .send({ name: "x" })
        .expect(404);
    });
  });

  // ── DELETE /environments/:id ───────────────────────────────────────────────

  describe("DELETE /environments/:id", () => {
    it("deletes and returns 204", async () => {
      const created = await request(app.getHttpServer())
        .post("/environments")
        .send({ name: "env-delete-me", data: {} })
        .expect(201);

      await request(app.getHttpServer())
        .delete(`/environments/${created.body.id}`)
        .expect(204);

      await request(app.getHttpServer())
        .get(`/environments/${created.body.id}`)
        .expect(404);
    });

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