/**
 * RBAC data-access matrix — dev system
 *
 * Verifies that role-based access control is enforced at the network level
 * (tRPC response payload) against the running dev server with real seed data.
 *
 * Unlike rbac-permissions.spec.ts (which checks UI visibility), these tests
 * call tRPC procedures directly via fetch() inside the browser context and
 * assert on HTTP status + tRPC error codes in the response body.
 *
 * All tests use pre-authenticated storage states — no signIn() calls, no
 * auth rate limiter pressure. 3 logins total per suite run (from globalSetup).
 *
 * Tested procedures and their audience classes (docs/route-access-matrix.md):
 *
 *   user.list            → admin-only     (adminProcedure)
 *   allocation.listView  → planning-read  (planningReadProcedure → VIEW_PLANNING)
 *   resource.listSummaries → resource-overview (resourceOverviewProcedure)
 *   user.listAssignable  → manager-write  (managerProcedure → ADMIN or MANAGER)
 *
 * Expected access matrix:
 *
 *   Procedure               ADMIN  MANAGER  VIEWER
 *   user.list               ✓      FORBIDDEN FORBIDDEN
 *   allocation.listView     ✓      ✓        FORBIDDEN
 *   resource.listSummaries  ✓      ✓        FORBIDDEN
 *   user.listAssignable     ✓      ✓        FORBIDDEN
 */
import { expect, test, type Page } from "@playwright/test";
import { STORAGE_STATE } from "../../playwright.dev.config.js";

// ---------------------------------------------------------------------------
// Helper — call a tRPC query procedure directly from within the browser context
// ---------------------------------------------------------------------------

type TrpcQueryResult = {
  httpStatus: number;
  trpcCode: string | null;
  hasData: boolean;
};

/**
 * Runs a tRPC GET query inside the browser context (inherits the session cookie).
 * Returns the HTTP status, the tRPC error code (null on success), and whether
 * a non-null `result.data` was returned.
 *
 * tRPC v11 batch GET format:
 *   /api/trpc/<proc>?batch=1&input={"0":{"json":<input>}}
 * Success response:  [{"result":{"data":{"json": ...}}}]
 * Error response:    [{"error":{"json":{"data":{"code":"FORBIDDEN","httpStatus":403}}}}]
 */
async function trpcQuery(
  page: Page,
  procedure: string,
  input: unknown = null,
): Promise<TrpcQueryResult> {
  return page.evaluate(
    async ({ procedure, input }) => {
      const encodedInput = encodeURIComponent(
        JSON.stringify({ "0": { json: input } }),
      );
      const url = `/api/trpc/${procedure}?batch=1&input=${encodedInput}`;
      const res = await fetch(url, { credentials: "include" });
      const httpStatus = res.status;

      // tRPC v11 with no transformer: no extra .json wrapper around the payload.
      // Error format: [{"error":{"message":"...","code":-32603,"data":{"code":"FORBIDDEN","httpStatus":403}}}]
      // Success format: [{"result":{"data": <value>}}]
      type TrpcBatchItem = {
        result?: { data?: unknown };
        error?: { data?: { code?: string }; message?: string };
      };
      const body = (await res.json()) as TrpcBatchItem[];
      const item = body[0];
      const trpcCode = item?.error?.data?.code ?? null;
      const hasData =
        item?.result?.data !== undefined && item.result.data !== null;

      return { httpStatus, trpcCode, hasData } satisfies {
        httpStatus: number;
        trpcCode: string | null;
        hasData: boolean;
      };
    },
    { procedure, input },
  );
}

// ---------------------------------------------------------------------------
// Admin — should have access to all procedures
// ---------------------------------------------------------------------------

test.describe("RBAC data-access — admin", () => {
  test.use({ storageState: STORAGE_STATE.admin });

  test("admin: user.list returns data (admin-only procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.list");
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
    expect(result.hasData).toBe(true);
  });

  test("admin: allocation.listView returns data (planning-read)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "allocation.listView", {});
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });

  test("admin: resource.listSummaries returns data (resource-overview)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "resource.listSummaries");
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });

  test("admin: user.listAssignable returns data (manager-write procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.listAssignable");
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });
});

// ---------------------------------------------------------------------------
// Manager — FORBIDDEN on admin-only, allowed on planning-read/resource-overview/manager
// ---------------------------------------------------------------------------

test.describe("RBAC data-access — manager", () => {
  test.use({ storageState: STORAGE_STATE.manager });

  test("manager: user.list is FORBIDDEN (admin-only procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.list");
    expect(result.trpcCode).toBe("FORBIDDEN");
  });

  test("manager: allocation.listView returns data (planning-read)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "allocation.listView", {});
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });

  test("manager: resource.listSummaries returns data (resource-overview)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "resource.listSummaries");
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });

  test("manager: user.listAssignable returns data (manager-write procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.listAssignable");
    expect(result.trpcCode).toBeNull();
    expect(result.httpStatus).toBe(200);
  });
});

// ---------------------------------------------------------------------------
// Viewer — FORBIDDEN on all sensitive procedures
// ---------------------------------------------------------------------------

test.describe("RBAC data-access — viewer", () => {
  test.use({ storageState: STORAGE_STATE.viewer });

  test("viewer: user.list is FORBIDDEN (admin-only procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.list");
    expect(result.trpcCode).toBe("FORBIDDEN");
  });

  test("viewer: allocation.listView is FORBIDDEN (planning-read — no VIEW_PLANNING)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "allocation.listView", {});
    expect(result.trpcCode).toBe("FORBIDDEN");
  });

  test("viewer: resource.listSummaries is FORBIDDEN (resource-overview)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "resource.listSummaries");
    expect(result.trpcCode).toBe("FORBIDDEN");
  });

  test("viewer: user.listAssignable is FORBIDDEN (manager-write procedure)", async ({
    page,
  }) => {
    await page.goto("/dashboard");
    await page.waitForLoadState("networkidle");

    const result = await trpcQuery(page, "user.listAssignable");
    expect(result.trpcCode).toBe("FORBIDDEN");
  });
});