import { INestApplication } from "@nestjs/common";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { query } from "@eden/database";
import { agent, bearer, closeTestApp, createTestApp, loginSuperAdmin, qaEmail, type AuthedTokens } from "./setup.js";

/**
 * Protects the fix in commit 8d108e0 ("fix: assign-user de reseller usava
 * resellerId do body, não o :id da URL"): the reseller a user is assigned
 * to must always be the `:id` in the URL, never a value read from the
 * request body. AssignUserToResellerDto (apps/api/src/resellers/dto/
 * assign-user-to-reseller.dto.ts) now only declares `userId` — it doesn't
 * accept `resellerId` at all — so the strongest proof available at the
 * HTTP layer is that a body containing `resellerId` is rejected outright
 * by the mass-assignment whitelist (a body that could "win" over the URL
 * literally cannot reach the service layer any more). This is backed up
 * with a direct read of `users.reseller_id` after a legitimate call,
 * confirming the URL's reseller is the one actually persisted.
 *
 * Fixtures: two throwaway resellers + one throwaway user (all
 * `qa-test-`/`qa_` tagged). Cleanup: unassign the user (reseller_id back
 * to null, exercised by test (b) itself), then deactivate the user and
 * both resellers — no DELETE endpoint exists for either resource.
 */
describe("resellers — assign-user URL-wins-over-body invariant", () => {
  let app: INestApplication;
  let admin: AuthedTokens;
  let resellerAId: string;
  let resellerBId: string;
  let userId: string;

  beforeAll(async () => {
    app = await createTestApp();
    admin = await loginSuperAdmin(app);

    const resellerA = await agent(app)
      .post("/api/v1/resellers")
      .set(...bearer(admin.accessToken))
      .send({ name: "qa-test- Reseller A (target)" })
      .expect(201);
    resellerAId = resellerA.body.id;

    const resellerB = await agent(app)
      .post("/api/v1/resellers")
      .set(...bearer(admin.accessToken))
      .send({ name: "qa-test- Reseller B (decoy in body)" })
      .expect(201);
    resellerBId = resellerB.body.id;

    const invite = await agent(app)
      .post("/api/v1/users/invite")
      .set(...bearer(admin.accessToken))
      .send({ email: qaEmail("reseller-assignee"), roleKey: "user", applications: ["core"] })
      .expect(201);
    userId = invite.body.user.id;
  });

  afterAll(async () => {
    await agent(app)
      .patch(`/api/v1/users/${userId}`)
      .set(...bearer(admin.accessToken))
      .send({ isActive: false })
      .expect(200);
    await agent(app)
      .patch(`/api/v1/resellers/${resellerAId}`)
      .set(...bearer(admin.accessToken))
      .send({ active: false })
      .expect(200);
    await agent(app)
      .patch(`/api/v1/resellers/${resellerBId}`)
      .set(...bearer(admin.accessToken))
      .send({ active: false })
      .expect(200);
    await closeTestApp(app);
  });

  it("a 'resellerId' in the body is rejected by the whitelist — there is no way to redirect the assignment via the body", async () => {
    await agent(app)
      .patch(`/api/v1/resellers/${resellerAId}/assign-user`)
      .set(...bearer(admin.accessToken))
      .send({ userId, resellerId: resellerBId })
      .expect(400);

    // Confirm the rejected request didn't partially apply anything.
    const { rows } = await query<{ reseller_id: string | null }>(
      "SELECT reseller_id FROM users WHERE id = $1",
      [userId],
    );
    expect(rows[0]?.reseller_id).toBeNull();
  });

  it("assigning via the URL's :id actually persists that reseller (not the decoy)", async () => {
    const res = await agent(app)
      .patch(`/api/v1/resellers/${resellerAId}/assign-user`)
      .set(...bearer(admin.accessToken))
      .send({ userId })
      .expect(200);
    expect(res.body.resellerId).toBe(resellerAId);

    const { rows } = await query<{ reseller_id: string | null }>(
      "SELECT reseller_id FROM users WHERE id = $1",
      [userId],
    );
    expect(rows[0]?.reseller_id).toBe(resellerAId);
  });

  it("POST /v1/resellers/unassign-user clears the assignment", async () => {
    const res = await agent(app)
      .post("/api/v1/resellers/unassign-user")
      .set(...bearer(admin.accessToken))
      .send({ userId })
      .expect(201);
    expect(res.body.resellerId).toBeNull();

    const { rows } = await query<{ reseller_id: string | null }>(
      "SELECT reseller_id FROM users WHERE id = $1",
      [userId],
    );
    expect(rows[0]?.reseller_id).toBeNull();
  });
});