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

test.describe('Environment Management', () => {
  test('should not allow removing DEFAULT environment', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');

    // Try to remove DEFAULT - should be blocked
    const removeButton = page.locator('button.btn-danger[title="Remove environment"]');
    
    // The button should be disabled for DEFAULT
    await expect(removeButton).toBeDisabled();
  });

  test('should remove non-DEFAULT environment', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');

    // Create a new environment
    page.once('dialog', async dialog => {
      await dialog.accept('toRemove');
    });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);

    // Verify we have 2 envs
    await expect(page.locator('#environments option')).toHaveCount(2);

    // Remove the new environment
    page.once('dialog', async dialog => {
      await dialog.accept(); // Confirm removal
    });
    await page.click('button.btn-danger[title="Remove environment"]');
    await page.waitForTimeout(300);

    // Verify we're back to 1 env (DEFAULT)
    await expect(page.locator('#environments option')).toHaveCount(1);
    await expect(page.locator('#environments')).toContainText('DEFAULT');
  });

  test('should create new environment and switch without errors', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');

    // Verify DEFAULT environment is loaded
    await expect(page.locator('#environments')).toContainText('DEFAULT');

    // Create a new environment
    page.once('dialog', async dialog => {
      await dialog.accept('env1');
    });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);

    // Verify new environment is created
    await expect(page.locator('#environments option')).toHaveCount(2);

    // Switch back to DEFAULT (by index 0)
    await page.locator('#environments').selectOption({ index: 0 });
    await page.waitForTimeout(300);

    // Verify the page is still working
    await expect(page.locator('#environments')).toBeVisible();

    // Switch to env1 (by text) - this should NOT cause error
    await page.locator('#environments').selectOption('env1');
    await page.waitForTimeout(300);

    // Verify the page is still working (no white screen of death)
    await expect(page.locator('#environments')).toBeVisible();
    await expect(page.locator('#environments option')).toHaveCount(2);
  });

  test('should create multiple environments and switch between them', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');

    // Create env1
    page.once('dialog', async dialog => {
      await dialog.accept('env1');
    });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);

    // Create env2
    page.once('dialog', async dialog => {
      await dialog.accept('env2');
    });
    await page.click('button.btn-success[title="Add environment"]');
    await page.waitForTimeout(500);

    // Verify we have 3 envs (DEFAULT + env1 + env2)
    await expect(page.locator('#environments option')).toHaveCount(3);

    // Switch to each env and verify page doesn't crash
    await page.locator('#environments').selectOption({ index: 0 });
    await page.waitForTimeout(200);
    await expect(page.locator('#environments')).toBeVisible();

    await page.locator('#environments').selectOption('env1');
    await page.waitForTimeout(200);
    await expect(page.locator('#environments')).toBeVisible();

    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")');

    // Step 1: Add a param to DEFAULT
    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);

    // Add second param
    await nameInput.fill('port');
    await valueInput.fill('9090');
    await addButton.click();
    await page.waitForTimeout(500);

    // Step 2: Switch to Content Template tab
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);

    // Verify the tab content is visible (check for Edit button)
    await expect(page.locator('button:has-text("Edit")')).toBeVisible();

    // Step 3: Click Edit button
    await page.click('button:has-text("Edit")');
    await page.waitForTimeout(500);

    // Step 4: Verify textarea is visible
    const textarea = page.locator('textarea');
    await expect(textarea).toBeVisible();
    
    // Step 5: Edit the template manually - add a new key
    await textarea.fill('{\n    "!!! host": "@host@",\n    "!!! port": "@port@",\n    "!!! custom": "@custom@"\n}');
    await page.waitForTimeout(300);

    // Step 6: Click Save
    await page.click('button:has-text("Save")');
    await page.waitForTimeout(500);

    // Step 7: Verify the template was saved (Edit button should be visible again)
    await expect(page.locator('button:has-text("Edit")')).toBeVisible();
    
    // Verify the content contains the new key
    const pageContent = await page.content();
    expect(pageContent).toContain('!!! custom');
  });

  test('should not duplicate params when placeholder already exists in template', async ({ page }) => {
    await page.goto('/');
    await page.click('button:has-text("Create new")');

    // Step 1: Add a param to DEFAULT
    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);

    // Step 2: Switch to Content Template tab
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);

    // Step 3: Click Edit and manually add @host@ usage in a custom field
    await page.click('button:has-text("Edit")');
    await page.waitForTimeout(300);

    const textarea = page.locator('textarea');
    // Add a custom field that uses @host@ placeholder
    await textarea.fill('{\n    "!!! host": "@host@",\n    "apiUrl": "http://@host@/api"\n}');
    await page.waitForTimeout(300);

    // Step 4: Save
    await page.click('button:has-text("Save")');
    await page.waitForTimeout(500);

    // Step 5: Add ANOTHER param with same name (host) - should not create duplicate
    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);

    // Step 6: Switch back to Content Template and verify no duplicate
    await page.click('a:has-text("Content Template")');
    await page.waitForTimeout(500);

    // Count occurrences of "!!! host" - should be exactly 1
    const templateContent = await page.locator('.config-template-editor').textContent();
    const hostKeyCount = (templateContent.match(/!!! host/g) || []).length;
    expect(hostKeyCount).toBe(1);

    // The @host@ placeholder should appear twice (once in !!! host, once in apiUrl)
    const hostPlaceholderCount = (templateContent.match(/@host@/g) || []).length;
    expect(hostPlaceholderCount).toBe(2);
  });
});