import { type Page } from "@playwright/test";
import { test, expect } from "../fixtures/stock-adjustment-processing";
import { StockAdjustmentCreateFormPage } from "../pages/stock-adjustment-create-form";
import { StockAdjustmentDetailPage } from "../pages/stock-adjustment-detail";
import { StockAdjustmentListPage } from "../pages/stock-adjustment-list";

/**
 * E2E coverage for the `stock-adjustment-processing` business flow, driven end to
 * end through the live frontend by the machine user (an account that holds both
 * the Inventory Manager capabilities — create / submit / cancel — and the
 * Approver's confirm / reject, since separation of duties is not enforced at the
 * application level per the actor docs).
 *
 * Each test walks the flow diagram's main path as a single journey, asserting the
 * visible status outcomes at every hand-off between the two roles. Nothing touches
 * real stock until the adjustment is CONFIRMED, so the happy path uses an INCREASE
 * CORRECTION (which never fails for insufficient stock) to exercise confirmation.
 */

const LINE_QTY = "5";

/**
 * Create a DRAFT stock adjustment carrying a unique reason code (so the list row
 * can be found) with a single INCREASE CORRECTION line, then land on its detail
 * page. Returns the adjustment id resolved from the detail URL.
 */
async function createDraftCorrectionAdjustment(page: Page, reasonCode: string): Promise<string> {
  const createForm = new StockAdjustmentCreateFormPage(page);
  await createForm.goto();
  await expect(createForm.adjustmentTypeSelect).toBeVisible();
  await createForm.selectAdjustmentType(/correction/i);
  await createForm.fillReasonCode(reasonCode);
  await createForm.selectFirstLineItem(0);
  await createForm.selectFirstLineStorageLocation(0);
  await createForm.setQuantity(0, LINE_QTY);
  // CORRECTION lines carry a per-line direction; INCREASE never fails on confirm
  // for lack of stock, keeping the happy path deterministic against seed data.
  await createForm.selectDirection(0, /increase/i);
  await createForm.submit();

  const listPage = new StockAdjustmentListPage(page);
  const detailPage = new StockAdjustmentDetailPage(page);

  // On success the create form navigates to the new record; depending on the
  // AppShell route nesting this lands directly on the detail page or on the
  // list. Handle both: if we land on the list, follow the new row's View link.
  await expect(detailPage.heading.or(listPage.heading)).toBeVisible();
  if (await listPage.heading.isVisible()) {
    await listPage.getViewLink(reasonCode).first().click();
    await page.waitForURL(/\/inventory\/stock-adjustment\/[^/]+$/);
    await expect(detailPage.heading).toBeVisible();
  }

  const id = new URL(page.url()).pathname.split("/").pop();
  if (!id) {
    throw new Error("Could not resolve stock adjustment id from the detail URL");
  }
  return id;
}

// Flow main path: Create (DRAFT) -> Submit (SUBMITTED) -> Confirm (CONFIRMED).
// Exercises both actors on one adjustment; confirmation applies the movement.
test("inventory manager creates and submits a correction adjustment, then the approver confirms it", async ({
  page,
}) => {
  const reasonCode = `E2E-CONFIRM-${Date.now()}`;
  await createDraftCorrectionAdjustment(page, reasonCode);

  const detailPage = new StockAdjustmentDetailPage(page);

  // DRAFT: the adjustment is submittable and cancellable; no approval actions yet.
  await expect(detailPage.statusBadge).toHaveText(/draft/i);
  await expect(detailPage.submitButton).toBeVisible();
  await expect(detailPage.cancelButton).toBeVisible();

  // Submit for approval — DRAFT -> SUBMITTED; the Approver actions surface and the
  // author-only actions retire.
  await detailPage.submitButton.click();
  await expect(detailPage.statusBadge).toHaveText(/submitted/i);
  await expect(detailPage.confirmButton).toBeVisible();
  await expect(detailPage.rejectButton).toBeVisible();
  await expect(detailPage.submitButton).toHaveCount(0);

  // Confirm — SUBMITTED -> CONFIRMED. Posting the movement is terminal: no
  // submit / cancel / confirm / reject actions remain.
  await detailPage.confirmButton.click();
  await expect(detailPage.statusBadge).toHaveText(/confirmed/i);
  await expect(detailPage.confirmButton).toHaveCount(0);
  await expect(detailPage.rejectButton).toHaveCount(0);
  await expect(detailPage.cancelButton).toHaveCount(0);
});

// Reject branch: Create -> Submit -> Reject (SUBMITTED -> REJECTED). The native
// resubmit transition is not surfaced by a resolver, so REJECTED is terminal here.
test("approver rejects a submitted stock adjustment", async ({ page }) => {
  const reasonCode = `E2E-REJECT-${Date.now()}`;
  await createDraftCorrectionAdjustment(page, reasonCode);

  const detailPage = new StockAdjustmentDetailPage(page);

  // Submit for approval — DRAFT -> SUBMITTED.
  await expect(detailPage.submitButton).toBeVisible();
  await detailPage.submitButton.click();
  await expect(detailPage.statusBadge).toHaveText(/submitted/i);
  await expect(detailPage.rejectButton).toBeVisible();

  // Reject — SUBMITTED -> REJECTED. No stock moved; the approval actions retire.
  await detailPage.rejectButton.click();
  await expect(detailPage.statusBadge).toHaveText(/rejected/i);
  await expect(detailPage.confirmButton).toHaveCount(0);
  await expect(detailPage.rejectButton).toHaveCount(0);
});

// Cancel branch + list triage: cancel a DRAFT adjustment, then confirm the list
// view surfaces it (status triage) linked back to the detail page.
test("inventory manager cancels a draft stock adjustment and finds it in the list", async ({
  page,
}) => {
  const reasonCode = `E2E-CANCEL-${Date.now()}`;
  await createDraftCorrectionAdjustment(page, reasonCode);

  const detailPage = new StockAdjustmentDetailPage(page);

  // Cancel — a DRAFT adjustment cancels unconditionally into the terminal
  // CANCELLED state: no submit / cancel actions remain.
  await expect(detailPage.cancelButton).toBeVisible();
  await detailPage.cancelButton.click();
  await expect(detailPage.statusBadge).toHaveText(/cancelled/i);
  await expect(detailPage.cancelButton).toHaveCount(0);
  await expect(detailPage.submitButton).toHaveCount(0);

  // View Stock Adjustment List — the cancelled adjustment is still listed for
  // triage and links back to its detail page.
  const listPage = new StockAdjustmentListPage(page);
  await listPage.goto();
  await expect(listPage.heading).toBeVisible();
  await expect(listPage.getRow(reasonCode).first()).toBeVisible();
  await listPage.getViewLink(reasonCode).first().click();
  await page.waitForURL(/\/inventory\/stock-adjustment\/[^/]+$/);
  await expect(detailPage.heading).toBeVisible();
});