import { test, expect, type APIRequestContext } from '@playwright/test';
import { setActiveProfile, HENDRIK_ID } from './fixtures/profile';

// Helper: idempotent recipe delete.
async function deleteRecipe(request: APIRequestContext, id: number): Promise<void> {
  await request.delete(`/api/recipes/${id}`);
}

// Shared ingredient payload builder — fills all required Zod fields.
function makeIngredient(
  position: number,
  name: string,
  section_heading: string | null,
  overrides: Partial<{
    quantity: number | null;
    unit: string | null;
    note: string | null;
    raw_text: string;
  }> = {}
) {
  return {
    position,
    quantity: overrides.quantity ?? null,
    unit: overrides.unit ?? null,
    name,
    note: overrides.note ?? null,
    raw_text: overrides.raw_text ?? name,
    section_heading
  };
}

// ─────────────────────────────────────────────────────────────────────────────
// Per-test cleanup scaffolding — single variable, reset in beforeEach.
// ─────────────────────────────────────────────────────────────────────────────

let createdId: number | null = null;

test.beforeEach(() => {
  createdId = null;
});

test.afterEach(async ({ request }) => {
  if (createdId !== null) {
    await deleteRecipe(request, createdId);
    createdId = null;
  }
});

// ─────────────────────────────────────────────────────────────────────────────
// Test 1 — pure API roundtrip (no browser needed)
// ─────────────────────────────────────────────────────────────────────────────

test('API: section_heading persistiert ueber PATCH + GET', async ({ request }) => {
  // 1. Create blank recipe.
  const createRes = await request.post('/api/recipes/blank');
  expect(createRes.status()).toBe(200);
  const { id } = (await createRes.json()) as { id: number };
  createdId = id;

  // 2. PATCH with 3 ingredients carrying section_heading values.
  const patchRes = await request.patch(`/api/recipes/${id}`, {
    data: {
      ingredients: [
        makeIngredient(1, 'Mehl', 'Fuer den Teig', { quantity: 200, unit: 'g', raw_text: '200 g Mehl' }),
        makeIngredient(2, 'Zucker', null, { quantity: 100, unit: 'g', raw_text: '100 g Zucker' }),
        makeIngredient(3, 'Beeren', 'Fuer die Fuellung', { quantity: 150, unit: 'g', raw_text: '150 g Beeren' })
      ]
    }
  });
  expect(patchRes.status()).toBe(200);

  // 3. GET and assert persisted values.
  const getRes = await request.get(`/api/recipes/${id}`);
  expect(getRes.status()).toBe(200);
  const body = (await getRes.json()) as {
    recipe: { ingredients: Array<{ name: string; section_heading: string | null }> };
  };
  const ings = body.recipe.ingredients;

  const mehl = ings.find((i) => i.name === 'Mehl');
  const zucker = ings.find((i) => i.name === 'Zucker');
  const beeren = ings.find((i) => i.name === 'Beeren');

  expect(mehl?.section_heading).toBe('Fuer den Teig');
  expect(zucker?.section_heading).toBeNull();
  expect(beeren?.section_heading).toBe('Fuer die Fuellung');
});

// ─────────────────────────────────────────────────────────────────────────────
// Test 2 — UI edit flow: add section, save, assert view renders heading
// ─────────────────────────────────────────────────────────────────────────────

test('Editor: Abschnitt via Inline-Button anlegen, View rendert Ueberschrift', async ({
  page,
  request
}) => {
  // 1. Create blank recipe via API.
  const createRes = await request.post('/api/recipes/blank');
  expect(createRes.status()).toBe(200);
  const { id } = (await createRes.json()) as { id: number };
  createdId = id;

  // 2. Open recipe in edit mode.
  await setActiveProfile(page, HENDRIK_ID);
  await page.goto(`/recipes/${id}?edit=1`);

  // 3. Add two ingredient rows.
  const addIngBtn = page.getByRole('button', { name: /Zutat hinzufügen/i });
  await addIngBtn.click();
  await addIngBtn.click();

  // Fill the two ingredient rows by aria-label "Zutat" inputs.
  const nameInputs = page.locator('.ing-list .ing-row input[aria-label="Zutat"]');
  await nameInputs.nth(0).fill('Mehl');
  await nameInputs.nth(1).fill('Zucker');

  // 4. Click "Abschnitt hinzufügen" above the first row.
  // The button is inside .section-insert which is opacity:0 until hover/focus.
  // Hover the ing-list to trigger visibility, then click.
  await page.hover('.ing-list');
  await page.locator('.ing-list .add-section').first().click();

  // 5. Type heading text into the section-heading input that appeared.
  const headingInput = page.locator('.ing-list input[aria-label="Sektionsüberschrift"]').first();
  await headingInput.fill('Fuer den Teig');

  // 6. Save — exact match to avoid colliding with "Kommentar speichern".
  await page.getByRole('button', { name: 'Speichern', exact: true }).click();

  // After save, editMode becomes false — page switches to view mode.
  // Wait for the section-heading element to confirm view mode is active.
  await expect(page.locator('.ing-list .section-heading').first()).toBeVisible({ timeout: 8000 });

  // 7. Assert heading text is rendered.
  await expect(page.locator('.ing-list .section-heading').first()).toHaveText('Fuer den Teig');
});

// ─────────────────────────────────────────────────────────────────────────────
// Test 3 — UI: remove an existing section heading, save, confirm it's gone
// ─────────────────────────────────────────────────────────────────────────────

test('Editor: Sektion entfernen speichert ohne Ueberschrift', async ({ page, request }) => {
  // 1. Create blank recipe and pre-populate via API.
  const createRes = await request.post('/api/recipes/blank');
  expect(createRes.status()).toBe(200);
  const { id } = (await createRes.json()) as { id: number };
  createdId = id;

  await request.patch(`/api/recipes/${id}`, {
    data: {
      ingredients: [makeIngredient(1, 'Butter', 'Teig', { raw_text: 'Butter' })]
    }
  });

  // 2. Open editor.
  await setActiveProfile(page, HENDRIK_ID);
  await page.goto(`/recipes/${id}?edit=1`);

  // The section-heading-row should be visible since heading = 'Teig'.
  const removeBtn = page
    .locator('.ing-list')
    .getByRole('button', { name: 'Sektion entfernen' });
  await expect(removeBtn).toBeVisible({ timeout: 6000 });

  // 3. Click the section-remove X button.
  await removeBtn.click();

  // 4. Save — exact match to avoid colliding with "Kommentar speichern".
  await page.getByRole('button', { name: 'Speichern', exact: true }).click();

  // Wait for view mode (editMode = false makes RecipeEditor unmount).
  // The .section-heading-row is part of the editor; in view mode we check
  // the view's .ing-list for absence of .section-heading items.
  await expect(page.locator('.ing-list .section-heading')).toHaveCount(0, { timeout: 8000 });
});

// ─────────────────────────────────────────────────────────────────────────────
// Test 4 — empty heading trims to null on save
// ─────────────────────────────────────────────────────────────────────────────

test('Editor: leeres Heading wird beim Speichern zu null', async ({ page, request }) => {
  // 1. Create blank recipe.
  const createRes = await request.post('/api/recipes/blank');
  expect(createRes.status()).toBe(200);
  const { id } = (await createRes.json()) as { id: number };
  createdId = id;

  // 2. Open editor, add one ingredient, open section input and leave it empty.
  await setActiveProfile(page, HENDRIK_ID);
  await page.goto(`/recipes/${id}?edit=1`);

  await page.getByRole('button', { name: /Zutat hinzufügen/i }).click();
  await page.locator('.ing-list .ing-row input[aria-label="Zutat"]').first().fill('Eier');

  // Trigger add-section visibility and click.
  await page.hover('.ing-list');
  await page.locator('.ing-list .add-section').first().click();

  // Leave the heading input empty (do not type anything).
  // The save() function trims '' → null.

  // 3. Save — exact match to avoid colliding with "Kommentar speichern".
  await page.getByRole('button', { name: 'Speichern', exact: true }).click();

  // Wait until view mode is active (editor gone).
  await expect(page.locator('.ing-list .section-heading')).toHaveCount(0, { timeout: 8000 });

  // 4. Confirm via API that section_heading is null.
  const getRes = await request.get(`/api/recipes/${id}`);
  expect(getRes.status()).toBe(200);
  const body = (await getRes.json()) as {
    recipe: { ingredients: Array<{ name: string; section_heading: string | null }> };
  };
  const eier = body.recipe.ingredients.find((i) => i.name === 'Eier');
  expect(eier?.section_heading).toBeNull();
});