import { test, expect } from '@playwright/test';
import * as fs from 'fs';

test.describe('Environment Management', () => {
  test('should not allow removing DEFAULT environment', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    const removeButton = page.locator('button.btn-danger[title="Remove environment"]');
    await expect(removeButton).toBeDisabled();
  });

  test('should remove non-DEFAULT environment', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    page.once('dialog', async dialog => { await dialog.accept('toRemove'); });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);
    await expect(page.locator('#environments option')).toHaveCount(2);
    page.once('dialog', async dialog => { await dialog.accept(); });
    await page.click('button.btn-danger[title="Remove environment"]');
    await page.waitForTimeout(300);
    await expect(page.locator('#environments option')).toHaveCount(1);
  });

  test('should create new environment and switch without errors', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    page.once('dialog', async dialog => { await dialog.accept('env1'); });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);
    await expect(page.locator('#environments option')).toHaveCount(2);
    await page.locator('#environments').selectOption({ index: 0 });
    await page.waitForTimeout(300);
    await page.locator('#environments').selectOption('env1');
    await page.waitForTimeout(300);
    await expect(page.locator('#environments')).toBeVisible();
  });

  test('should create multiple environments and switch between them', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    page.once('dialog', async dialog => { await dialog.accept('env1'); });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);
    page.once('dialog', async dialog => { await dialog.accept('env2'); });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);
    await expect(page.locator('#environments option')).toHaveCount(3);
    await page.locator('#environments').selectOption({ index: 0 });
    await page.waitForTimeout(200);
    await page.locator('#environments').selectOption('env1');
    await page.waitForTimeout(200);
    await page.locator('#environments').selectOption('env2');
    await page.waitForTimeout(200);
    await expect(page.locator('#environments')).toBeVisible();
  });

  test('should add params and edit template manually', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    const nameInput = page.locator('input[placeholder="name"]').first();
    const valueInput = page.locator('input[placeholder="value"]').first();
    const addButton = page.locator('button.btn-success').first();
    await nameInput.fill('host');
    await valueInput.fill('localhost:8080');
    await addButton.click();
    await page.waitForTimeout(500);
    await nameInput.fill('port');
    await valueInput.fill('9090');
    await addButton.click();
    await page.waitForTimeout(500);
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);
    await expect(page.locator('button:has-text("Edit")')).toBeVisible();
    await page.click('button:has-text("Edit")');
    await page.waitForTimeout(500);
    const textarea = page.locator('textarea');
    await expect(textarea).toBeVisible();
    await textarea.fill('{\n    "!!! host": "@host@",\n    "!!! port": "@port@",\n    "!!! custom": "@custom@"\n}');
    await page.waitForTimeout(300);
    await page.click('button:has-text("Save")');
    await page.waitForTimeout(500);
    await expect(page.locator('button:has-text("Edit")')).toBeVisible();
    const pageContent = await page.content();
    expect(pageContent).toContain('!!! custom');
  });

  test('should not duplicate params when placeholder already exists', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    const nameInput = page.locator('input[placeholder="name"]').first();
    const valueInput = page.locator('input[placeholder="value"]').first();
    const addButton = page.locator('button.btn-success').first();
    await nameInput.fill('host');
    await valueInput.fill('localhost:8080');
    await addButton.click();
    await page.waitForTimeout(500);
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);
    await page.click('button:has-text("Edit")');
    await page.waitForTimeout(300);
    const textarea = page.locator('textarea');
    await textarea.fill('{\n    "!!! host": "@host@",\n    "apiUrl": "http://@host@/api"\n}');
    await page.waitForTimeout(300);
    await page.click('button:has-text("Save")');
    await page.waitForTimeout(500);
    await page.click('a:has-text("Env")');
    await page.waitForTimeout(300);
    await nameInput.fill('host');
    await valueInput.fill('updated-host:9090');
    await addButton.click();
    await page.waitForTimeout(500);
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);
    const templateContent = await page.locator('.config-template-editor').textContent();
    const hostKeyCount = (templateContent.match(/!!! host/g) || []).length;
    expect(hostKeyCount).toBe(1);
    const hostPlaceholderCount = (templateContent.match(/@host@/g) || []).length;
    expect(hostPlaceholderCount).toBe(2);
  });

  test('should download config file with correct filename', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');
    await page.waitForTimeout(500);
    const [download] = await Promise.all([
      page.waitForEvent('download'),
      page.click('button:has-text("Download")')
    ]);
    const filename = download.suggestedFilename();
    expect(filename).toMatch(/^config_\d{2}-\d{2}-\d{2}-\d{4}\.json\.xml$/);
    // Save and read the file to verify content
    await download.saveAs('temp-config.xml');
    const contentStr = fs.readFileSync('temp-config.xml', 'utf8');
    expect(contentStr).toContain('engine');
    expect(contentStr).toContain('DEFAULT');
    expect(contentStr).toContain('template');
    fs.unlinkSync('temp-config.xml');
  });
});