/**
 * E2E — Submitter user journey.
 * Covers: S-01 (create PO), S-02 (save draft), S-03 (submit for approval),
 *          S-05 (view status), S-07 (edit and resubmit), S-08 (confirm receipt page visible).
 */
import { test, expect, type Page } from "@playwright/test";
import { fillFirstLineItem, fillPoHeader } from "./helpers/login";

const TECH = { email: "tech@pelagia.local", password: "tech1234" };
const MGR  = { email: "manager@pelagia.local", password: "manager1234" };

async function login(page: Page, creds: typeof TECH) {
  await page.goto("/login");
  await page.getByLabel(/email/i).fill(creds.email);
  await page.getByLabel(/password/i).fill(creds.password);
  await page.getByRole("button", { name: /sign in/i }).click();
  await expect(page).not.toHaveURL(/\/login/, { timeout: 20_000 });
}

async function fillNewPoForm(page: Page, title: string) {
  await page.goto("/po/new");
  await fillPoHeader(page, title);
  await fillFirstLineItem(page, {
    name: "Test marine part",
    quantity: "5",
    unitPrice: "100",
  });
}

// ── S-02: Save as draft ──────────────────────────────────────────────────────

test("S-02 — submitter can save a PO as draft", async ({ page }) => {
  await login(page, TECH);
  const title = `E2E_DRAFT_${Date.now()}`;
  await fillNewPoForm(page, title);

  await page.getByRole("button", { name: /save as draft/i }).click();
  await expect(page).toHaveURL(/\/po\//);
  await expect(page.getByText("Draft")).toBeVisible();
});

// ── S-01 + S-03: Create and submit ──────────────────────────────────────────

test("S-01 + S-03 — submitter can create a PO and submit for approval", async ({ page }) => {
  await login(page, TECH);
  const title = `E2E_SUBMIT_${Date.now()}`;
  await fillNewPoForm(page, title);

  await page.getByRole("button", { name: /submit for approval/i }).click();
  await expect(page).toHaveURL(/\/po\//);
  await expect(page.getByText(/under review/i)).toBeVisible();
});

// ── S-01: Line items with GST ────────────────────────────────────────────────

test("S-01 — new PO form shows GST rate dropdown on line items", async ({ page }) => {
  await login(page, TECH);
  await page.goto("/po/new");
  // GST select should be visible with 18% default
  const gstSelect = page.locator("select").filter({ hasText: "18%" });
  await expect(gstSelect).toBeVisible();
});

// ── S-01: T&C structured fields ──────────────────────────────────────────────

test("S-01 — new PO form shows structured T&C section with fixed first line", async ({ page }) => {
  await login(page, TECH);
  await page.goto("/po/new");
  await expect(page.getByText(/please quote this purchase order/i)).toBeVisible();
  await expect(page.locator('input[name="tcDelivery"]')).toBeVisible();
  await expect(page.locator('input[name="tcPaymentTerms"]')).toBeVisible();
});

// ── S-05: View status and activity ──────────────────────────────────────────

test("S-05 — submitter can view the status and activity trail of their PO", async ({ page }) => {
  await login(page, TECH);
  // Go to My Orders
  await page.goto("/my-orders");
  await expect(page.getByRole("heading", { name: /my orders|orders/i })).toBeVisible();
  // Should have at least the seeded POs or any created ones
  // Click the first PO if available
  const firstLink = page.locator("a[href^='/po/']").first();
  if (await firstLink.count() > 0) {
    await firstLink.click();
    await expect(page.getByText(/activity/i)).toBeVisible();
  }
});

// ── S-07: Edit PO when edits requested ──────────────────────────────────────

test("S-07 — submitter sees edit form pre-populated with existing values", async ({ page }) => {
  await login(page, TECH);
  const title = `E2E_EDIT_${Date.now()}`;
  await fillNewPoForm(page, title);
  await page.getByRole("button", { name: /save as draft/i }).click();
  await expect(page).toHaveURL(/\/po\//);

  // Click Edit
  await page.getByRole("link", { name: /edit/i }).click();
  await expect(page).toHaveURL(/\/edit$/);
  // Form should be pre-populated
  await expect(page.locator('input[name="title"]')).toHaveValue(title);
  await expect(page.getByPlaceholder("Item name *")).toHaveValue("Test marine part");
});

// ── S-08: Confirm receipt page ───────────────────────────────────────────────

test("S-08 — receipt confirmation page is accessible at /po/[id]/receipt", async ({ page }) => {
  await login(page, TECH);
  // Use the seeded PAID_DELIVERED PO if present, otherwise just check the route exists
  // The seed creates a PO in PAID_DELIVERED state
  await page.goto("/my-orders");
  const paidLink = page.getByText(/paid|confirm receipt/i).first();
  if (await paidLink.isVisible()) {
    await paidLink.click();
    // Should see confirm receipt CTA
    await expect(page.getByRole("link", { name: /confirm receipt/i })).toBeVisible();
  }
});

// ── Navigation ───────────────────────────────────────────────────────────────

test("submitter dashboard shows New PO button", async ({ page }) => {
  await login(page, TECH);
  await expect(page.getByRole("link", { name: /new (po|purchase order)/i })).toBeVisible();
});

test("submitter cannot access approvals queue", async ({ page }) => {
  await login(page, TECH);
  await page.goto("/approvals");
  // Should redirect or show dashboard (not the approvals queue)
  await expect(page).not.toHaveURL(/approvals/);
});