// Jest setup file - runs before all tests
// Set NODE_ENV to test to prevent main application from starting
process.env.NODE_ENV = 'test';

// Mock fs operations globally to prevent checkpoint.js errors
const mockFn = () => {
  const fn = function(...args) { return fn.mockReturnValue; };
  fn.mockReturnValue = undefined;
  fn.mockResolvedValue = (value) => { fn.mockReturnValue = Promise.resolve(value); return fn; };
  return fn;
};

global.fs = {
  readFileSync: () => 'mocked-file-content',
  writeFileSync: () => {},
  mkdirSync: () => {},
  existsSync: () => false,
  readdirSync: () => [],
  unlinkSync: () => {}
};

// Mock fs/promises
global.fsPromises = {
  readFile: () => Promise.resolve('mocked-content'),
  writeFile: () => Promise.resolve(undefined),
  mkdir: () => Promise.resolve(undefined)
};

// Suppress console warnings and errors during tests for cleaner output
const originalConsoleWarn = console.warn;
const originalConsoleError = console.error;

console.warn = () => {};
console.error = () => {};

// Track timers and intervals for cleanup
const timers = new Set();
const immediates = new Set();
const originalSetTimeout = global.setTimeout;
const originalSetInterval = global.setInterval;
const originalSetImmediate = global.setImmediate;
const originalClearTimeout = global.clearTimeout;
const originalClearInterval = global.clearInterval;
const originalClearImmediate = global.clearImmediate;

global.setTimeout = (fn, delay, ...args) => {
  const id = originalSetTimeout(fn, delay, ...args);
  timers.add(id);
  return id;
};

global.setInterval = (fn, delay, ...args) => {
  const id = originalSetInterval(fn, delay, ...args);
  timers.add(id);
  return id;
};

global.setImmediate = (fn, ...args) => {
  const id = originalSetImmediate(fn, ...args);
  immediates.add(id);
  return id;
};

global.clearTimeout = (id) => {
  timers.delete(id);
  return originalClearTimeout(id);
};

global.clearInterval = (id) => {
  timers.delete(id);
  return originalClearInterval(id);
};

global.clearImmediate = (id) => {
  immediates.delete(id);
  return originalClearImmediate(id);
};

global.pendingImmediates = immediates;

// Mock @iarna/toml to prevent async import after teardown
// Note: This mock will be applied globally for all tests

// Comprehensive behavioral detection mocking to prevent async operations
global.mockBehavioralDetection = {
  config: { enabled: false },
  isBlocked: () => Promise.resolve({ blocked: false }),
  getRateLimit: () => Promise.resolve(null),
  analyzeRequest: () => Promise.resolve({ totalScore: 0, patterns: [] }),
  loadRules: () => Promise.resolve(),
  init: () => Promise.resolve()
};

// Mock the loadConfig function globally to prevent TOML imports
global.mockLoadConfig = async (name, target) => {
  // Return immediately without trying to import TOML
  return Promise.resolve();
};

// Mock dynamic imports to prevent teardown issues
const originalImport = global.import;
if (originalImport) {
  global.import = (modulePath) => {
    if (modulePath === '@iarna/toml') {
      return Promise.resolve({
        default: { parse: () => ({}) },
        parse: () => ({})
      });
    }
    if (modulePath.includes('behavioral-detection')) {
      return Promise.resolve(global.mockBehavioralDetection);
    }
    return originalImport(modulePath);
  };
}

// Function to clear all timers
global.clearAllTimers = () => {
  timers.forEach(id => {
    originalClearTimeout(id);
    originalClearInterval(id);
  });
  timers.clear();
  
  immediates.forEach(id => {
    originalClearImmediate(id);
  });
  immediates.clear();
};

// Clean up after all tests
afterAll(() => {
  // Clear all remaining timers
  global.clearAllTimers();
  
  // Restore original console methods
  console.warn = originalConsoleWarn;
  console.error = originalConsoleError;
  
  // Restore original import if it was mocked
  if (originalImport) {
    global.import = originalImport;
  }
  
  // Restore original timer functions
  global.setTimeout = originalSetTimeout;
  global.setInterval = originalSetInterval;
  global.setImmediate = originalSetImmediate;
  global.clearTimeout = originalClearTimeout;
  global.clearInterval = originalClearInterval;
  global.clearImmediate = originalClearImmediate;
});