import { config } from 'dotenv';
import path from 'path';
import { TEST_CONFIG } from '../config/__tests__/test.config';
import { beforeAll, afterAll, beforeEach, describe, expect, it, mock, test } from 'bun:test';

// Load test environment variables
config({ path: path.resolve(process.cwd(), '.env.test') });

// Global test setup
beforeAll(() => {
    // Set required environment variables
    process.env.NODE_ENV = 'test';
    process.env.JWT_SECRET = TEST_CONFIG.TEST_JWT_SECRET;
    process.env.TEST_TOKEN = TEST_CONFIG.TEST_TOKEN;

    // Configure console output for tests
    const originalConsoleError = console.error;
    const originalConsoleWarn = console.warn;
    const originalConsoleLog = console.log;

    // Suppress console output during tests unless explicitly enabled
    if (!process.env.DEBUG) {
        console.error = mock(() => { });
        console.warn = mock(() => { });
        console.log = mock(() => { });
    }

    // Store original console methods for cleanup
    (global as any).__ORIGINAL_CONSOLE__ = {
        error: originalConsoleError,
        warn: originalConsoleWarn,
        log: originalConsoleLog
    };
});

// Global test teardown
afterAll(() => {
    // Restore original console methods
    const originalConsole = (global as any).__ORIGINAL_CONSOLE__;
    if (originalConsole) {
        console.error = originalConsole.error;
        console.warn = originalConsole.warn;
        console.log = originalConsole.log;
        delete (global as any).__ORIGINAL_CONSOLE__;
    }
});

// Reset mocks between tests
beforeEach(() => {
    // Clear all mock function calls
    const mockFns = Object.values(mock).filter(value => typeof value === 'function');
    mockFns.forEach(mockFn => {
        if (mockFn.mock) {
            mockFn.mock.calls = [];
            mockFn.mock.results = [];
            mockFn.mock.instances = [];
            mockFn.mock.lastCall = undefined;
        }
    });
});

// Custom test environment setup
const setupTestEnvironment = () => {
    return {
        // Mock WebSocket for SSE tests
        mockWebSocket: () => {
            const mockWs = {
                on: mock(() => { }),
                send: mock(() => { }),
                close: mock(() => { })
            };
            return mockWs;
        },

        // Mock HTTP response for API tests
        mockResponse: () => {
            const res: any = {};
            res.status = mock(() => res);
            res.json = mock(() => res);
            res.send = mock(() => res);
            res.end = mock(() => res);
            res.setHeader = mock(() => res);
            res.writeHead = mock(() => res);
            res.write = mock(() => true);
            res.removeHeader = mock(() => res);
            return res;
        },

        // Mock HTTP request for API tests
        mockRequest: (overrides = {}) => {
            return {
                headers: { 'content-type': 'application/json' },
                body: {},
                query: {},
                params: {},
                ip: TEST_CONFIG.TEST_CLIENT_IP,
                method: 'GET',
                path: '/api/test',
                is: mock((type: string) => type === 'application/json'),
                ...overrides
            };
        },

        // Create test client for SSE tests
        createTestClient: (id: string = 'test-client') => ({
            id,
            ip: TEST_CONFIG.TEST_CLIENT_IP,
            connectedAt: new Date(),
            send: mock(() => { }),
            rateLimit: {
                count: 0,
                lastReset: Date.now()
            },
            connectionTime: Date.now()
        }),

        // Create test event for SSE tests
        createTestEvent: (type: string = 'test_event', data: any = {}) => ({
            event_type: type,
            data,
            origin: 'test',
            time_fired: new Date().toISOString(),
            context: { id: 'test' }
        }),

        // Create test entity for Home Assistant tests
        createTestEntity: (entityId: string = 'test.entity', state: string = 'on') => ({
            entity_id: entityId,
            state,
            attributes: {},
            last_changed: new Date().toISOString(),
            last_updated: new Date().toISOString()
        }),

        // Helper to wait for async operations
        wait: (ms: number) => new Promise(resolve => setTimeout(resolve, ms))
    };
};

// Export test utilities
export const testUtils = setupTestEnvironment();

// Export Bun test utilities
export { beforeAll, afterAll, beforeEach, describe, expect, it, mock, test };

// Make test utilities available globally
(global as any).testUtils = testUtils;
(global as any).describe = describe;
(global as any).it = it;
(global as any).test = test;
(global as any).expect = expect;
(global as any).beforeAll = beforeAll;
(global as any).afterAll = afterAll;
(global as any).beforeEach = beforeEach;
(global as any).mock = mock;