import { APIRequestContext, expect } from '@playwright/test';

/**
 * Where the app under test is served.
 *
 * Matches playwright.config.ts's baseURL. It exists as a constant because
 * `beforeAll` runs with worker-scoped fixtures only and cannot read the
 * test-scoped `baseURL` option, so a seeding hook has to name the host itself.
 * One spec used to write it inline, which meant changing the port in the config
 * moved every test except that one.
 */
export const BASE_URL = process.env.PLAYWRIGHT_BASE_URL ?? 'http://localhost:5173';

/**
 * Seeding through the admin API.
 *
 * Every spec that needs stock used to write its own version of this, and the
 * copies had drifted: some checked `res.ok()`, some checked `res.status()`,
 * some checked nothing, and one built its own request context against a
 * hardcoded `http://localhost:5173` rather than the configured baseURL.
 *
 * Seeding through the API rather than the UI on purpose. Creating an item by
 * driving the admin form makes every storefront test depend on the admin form
 * working, so a broken form fails a hundred tests that are not about it.
 */

/** An admin API context for `beforeAll`, where the `adminApi` fixture is out of reach. */
export async function createAdminContext(
  playwright: { request: { newContext: (o: { baseURL: string }) => Promise<APIRequestContext> } }
): Promise<APIRequestContext> {
  return playwright.request.newContext({ baseURL: BASE_URL });
}

export interface SeededItem {
  id: number;
  name: string;
}

/** Unique enough to survive a parallel run and a database nobody truncated. */
export function uniqueSuffix(): string {
  return `${Date.now().toString(36)}${Math.random().toString(36).slice(2, 7)}`;
}

export function uniqueEmail(prefix = 'pw'): string {
  return `${prefix}-${uniqueSuffix()}@example.com`;
}

interface CreateItemOptions {
  name: string;
  price?: string;
  description?: string;
  categoryId?: number | null;
  tags?: string[];
  /**
   * New items are created pending, and the storefront lists only published
   * ones. Most fixtures stand in for ordinary stock rather than staged drafts,
   * so publishing is the default — a spec that wants a draft asks for one.
   */
  publish?: boolean;
}

export async function createItem(
  api: APIRequestContext,
  options: CreateItemOptions
): Promise<SeededItem> {
  const res = await api.post('/api/admin/items', {
    // multipart rather than JSON: the route accepts image uploads, so it reads
    // its fields from a multipart body even when no image is attached.
    multipart: {
      name: options.name,
      description: options.description ?? '',
      price: options.price ?? '50',
      category_id: options.categoryId == null ? '' : String(options.categoryId),
      tags: JSON.stringify(options.tags ?? [])
    }
  });
  expect(res.ok(), `creating item ${options.name}`).toBeTruthy();
  const item = { id: (await res.json()).id as number, name: options.name };

  if (options.publish ?? true) {
    await publishItem(api, item.id);
  }
  return item;
}

export async function publishItem(api: APIRequestContext, id: number): Promise<void> {
  const res = await api.post(`/api/admin/items/${id}/mark-available`);
  expect(res.ok(), `publishing item ${id}`).toBeTruthy();
}

export async function sellItem(api: APIRequestContext, id: number): Promise<void> {
  const res = await api.post(`/api/admin/items/${id}/mark-sold`);
  expect(res.ok(), `selling item ${id}`).toBeTruthy();
}

export async function createCategory(
  api: APIRequestContext,
  name: string,
  parentId: number | null = null
): Promise<number> {
  const res = await api.post('/api/admin/categories', { data: { name, parent_id: parentId } });
  expect(res.status(), `creating category ${name}`).toBe(201);
  return (await res.json()).id as number;
}

export async function createTag(api: APIRequestContext, name: string): Promise<number> {
  const res = await api.post('/api/admin/tags', { data: { name } });
  expect(res.ok(), `creating tag ${name}`).toBeTruthy();
  return (await res.json()).id as number;
}