import dotenv from 'dotenv';
dotenv.config({ path: '.env.local' });
dotenv.config({ path: '.env' });

import jwt from 'jsonwebtoken';
import https from 'https';
import http from 'http';
import net from 'net';
import {
  generateJitsiRoomName,
  generateJitsiToken,
  generateJitsiMeetingUrl,
  JitsiUser,
} from '../lib/jitsi';
import { prisma, getTenantPrisma } from '../lib/prisma';

// ANSI color codes
const GREEN = '\x1b[32m';
const RED = '\x1b[31m';
const YELLOW = '\x1b[33m';
const CYAN = '\x1b[36m';
const BOLD = '\x1b[1m';
const RESET = '\x1b[0m';

async function testRoomIdGeneration() {
  console.log(`\n${CYAN}${BOLD}[1/4] Testing Deterministic Jitsi Room ID Generation...${RESET}`);

  const tenantSlug = 'peak-fitness';
  const sessionId = 'session_abc123';
  const fixedTimestamp = 1775740000000;

  const roomName = generateJitsiRoomName(tenantSlug, sessionId, fixedTimestamp);
  const expectedFormat = `${tenantSlug}_${sessionId}_${fixedTimestamp}`;

  if (roomName !== expectedFormat) {
    throw new Error(`Expected room name '${expectedFormat}', got '${roomName}'`);
  }

  // Test special character sanitization
  const messySlug = 'Gym @ Downtown #1!';
  const sanitizedRoom = generateJitsiRoomName(messySlug, sessionId, fixedTimestamp);
  if (/[@#! ]/.test(sanitizedRoom)) {
    throw new Error(`Room name was not properly sanitized: '${sanitizedRoom}'`);
  }

  console.log(`  ${GREEN}✔ Deterministic room format verified: ${roomName}${RESET}`);
  console.log(`  ${GREEN}✔ Slug sanitization verified: '${messySlug}' -> '${sanitizedRoom}'${RESET}`);
  console.log(`  ${GREEN}${BOLD}✔ Room ID generation check: PASSED${RESET}`);
  return true;
}

async function testJwtSigning() {
  console.log(`\n${CYAN}${BOLD}[2/4] Testing Jitsi JWT Room Token Signing & Claims...${RESET}`);

  const roomName = 'iron-gym_session_999_1775740000000';
  const tenantSlug = 'iron-gym';
  const secret = process.env.JITSI_APP_SECRET;
  if (!secret) {
    throw new Error('JITSI_APP_SECRET is required for JWT verification');
  }

  // 1. Host (Instructor) Token
  const hostUser: JitsiUser = {
    id: 'user_instructor_01',
    name: 'Marcus Miller',
    email: 'marcus@iron-gym.local',
    role: 'INSTRUCTOR',
  };

  const hostToken = generateJitsiToken({
    roomName,
    tenantSlug,
    user: hostUser,
    expiresInSeconds: 3600,
  });

  const decodedHost = jwt.verify(hostToken, secret) as any;

  if (decodedHost.room !== roomName) {
    throw new Error(`Token room mismatch: expected '${roomName}', got '${decodedHost.room}'`);
  }
  if (decodedHost.context?.user?.moderator !== true) {
    throw new Error('Host token expected moderator: true');
  }
  if (decodedHost.context?.features?.recording !== true) {
    throw new Error('Host token expected recording: true');
  }

  console.log(`  ${GREEN}✔ Host JWT verified: moderator=true, recording=true, room=${decodedHost.room}${RESET}`);

  // 2. Participant (Client) Token
  const clientUser: JitsiUser = {
    id: 'user_client_02',
    name: 'Sarah Connor',
    email: 'sarah@iron-gym.local',
    role: 'CLIENT',
  };

  const clientToken = generateJitsiToken({
    roomName,
    tenantSlug,
    user: clientUser,
    expiresInSeconds: 3600,
  });

  const decodedClient = jwt.verify(clientToken, secret) as any;

  if (decodedClient.context?.user?.moderator !== false) {
    throw new Error('Client token expected moderator: false');
  }
  if (decodedClient.context?.features?.recording !== false) {
    throw new Error('Client token expected recording: false');
  }

  console.log(`  ${GREEN}✔ Client JWT verified: moderator=false, recording=false, room=${decodedClient.room}${RESET}`);

  // 3. Meeting URL Construction
  const meetingUrl = generateJitsiMeetingUrl(roomName, hostToken);
  if (!meetingUrl.includes('https://') || !meetingUrl.includes(roomName) || !meetingUrl.includes('jwt=')) {
    throw new Error(`Meeting URL construction failed: ${meetingUrl}`);
  }
  console.log(`  ${GREEN}✔ Meeting URL constructed successfully: ${meetingUrl.slice(0, 75)}...${RESET}`);

  console.log(`  ${GREEN}${BOLD}✔ JWT signing & claims check: PASSED${RESET}`);
  return true;
}

async function testJitsiConnectivity() {
  console.log(`\n${CYAN}${BOLD}[3/4] Testing Connectivity to Jitsi Web (192.168.16.50)...${RESET}`);

  const host = '192.168.16.50';

  // 1. TCP socket test to Port 443
  const port443Ok = await new Promise<boolean>((resolve) => {
    const socket = new net.Socket();
    socket.setTimeout(3000);
    socket.connect(443, host, () => {
      socket.destroy();
      resolve(true);
    });
    socket.on('error', () => resolve(false));
    socket.on('timeout', () => {
      socket.destroy();
      resolve(false);
    });
  });

  if (!port443Ok) {
    throw new Error(`TCP connection to ${host}:443 failed`);
  }
  console.log(`  ${GREEN}✔ TCP connection to ${host}:443 successful${RESET}`);

  // 2. HTTPS request to Jitsi Web endpoint
  const httpsOk = await new Promise<boolean>((resolve, reject) => {
    const req = https.request(
      {
        host,
        port: 443,
        path: '/',
        method: 'GET',
        rejectUnauthorized: false,
        timeout: 4000,
      },
      (res) => {
        console.log(`  ${GREEN}✔ Jitsi Web HTTPS response received: HTTP ${res.statusCode} ${res.statusMessage}${RESET}`);
        resolve(true);
      }
    );

    req.on('error', (err) => {
      console.log(`  ${YELLOW}⚠ HTTPS request error (${err.message}), checking HTTP port 80 fallback...${RESET}`);
      http.get(`http://${host}:80/`, (res80) => {
        console.log(`  ${GREEN}✔ Jitsi Web HTTP:80 response received: HTTP ${res80.statusCode}${RESET}`);
        resolve(true);
      }).on('error', reject);
    });

    req.on('timeout', () => {
      req.destroy();
      resolve(false);
    });

    req.end();
  });

  if (!httpsOk) {
    throw new Error(`Failed to receive HTTP/HTTPS response from Jitsi Web at ${host}`);
  }

  console.log(`  ${GREEN}${BOLD}✔ Jitsi Web endpoint check: PASSED${RESET}`);
  return true;
}

async function testTenantClassroomIntegration() {
  console.log(`\n${CYAN}${BOLD}[4/4] Testing Multi-Tenant Classroom Database Flow...${RESET}`);

  const testSlug = 'jitsi-test-tenant';
  let tenant = await prisma.tenant.findUnique({ where: { slug: testSlug } });

  if (!tenant) {
    tenant = await prisma.tenant.create({
      data: {
        name: 'Jitsi Test Gym',
        slug: testSlug,
        domain: 'jitsi-test.fitnessapp.local',
      },
    });
  }

  const tenantPrisma = getTenantPrisma(tenant.id);

  // Create class session with Jitsi room ID
  const timestamp = Date.now();
  const jitsiRoomId = generateJitsiRoomName(tenant.slug, 'class-poc', timestamp);

  const session = await tenantPrisma.classSession.create({
    data: {
      tenantId: tenant.id,
      title: 'Milestone 2 Live HIIT Test',
      description: 'End-to-end WebRTC classroom verification session',
      startTime: new Date(),
      endTime: new Date(Date.now() + 3600 * 1000),
      capacity: 10,
      jitsiRoomId,
    },
  });

  console.log(`  ${GREEN}✔ ClassSession created with Jitsi Room ID: ${session.jitsiRoomId}${RESET}`);

  // Create Instructor and Client
  const instructor = await tenantPrisma.user.upsert({
    where: {
      tenantId_email: {
        tenantId: tenant.id,
        email: `instructor@${testSlug}.com`,
      },
    },
    update: {},
    create: {
      tenantId: tenant.id,
      name: 'Lead Trainer',
      email: `instructor@${testSlug}.com`,
      role: 'INSTRUCTOR',
    },
  });

  const client = await tenantPrisma.user.upsert({
    where: {
      tenantId_email: {
        tenantId: tenant.id,
        email: `client@${testSlug}.com`,
      },
    },
    update: {},
    create: {
      tenantId: tenant.id,
      name: 'Test Athlete',
      email: `client@${testSlug}.com`,
      role: 'CLIENT',
    },
  });

  // Verify Booking Creation
  const booking = await tenantPrisma.booking.upsert({
    where: {
      userId_classSessionId: {
        userId: client.id,
        classSessionId: session.id,
      },
    },
    update: {},
    create: {
      tenantId: tenant.id,
      userId: client.id,
      classSessionId: session.id,
      status: 'CONFIRMED',
      signedWaiverAt: new Date(),
    },
  });

  console.log(`  ${GREEN}✔ Verified Client Booking: user ${client.id} -> session ${session.id} (Status: ${booking.status})${RESET}`);

  // Generate tokens for both
  const hostToken = generateJitsiToken({
    roomName: session.jitsiRoomId,
    tenantSlug: tenant.slug,
    user: {
      id: instructor.id,
      name: instructor.name || 'Lead Trainer',
      email: instructor.email,
      role: instructor.role,
    },
  });

  const clientToken = generateJitsiToken({
    roomName: session.jitsiRoomId,
    tenantSlug: tenant.slug,
    user: {
      id: client.id,
      name: client.name || 'Test Athlete',
      email: client.email,
      role: client.role,
    },
  });

  if (!hostToken || !clientToken) {
    throw new Error('Token generation failed for database entities');
  }

  console.log(`  ${GREEN}✔ Tenant isolation verified: both host & client tokens signed for ${session.jitsiRoomId}${RESET}`);
  console.log(`  ${GREEN}${BOLD}✔ Multi-Tenant Classroom Flow check: PASSED${RESET}`);
  return true;
}

async function main() {
  console.log(`${BOLD}====================================================${RESET}`);
  console.log(`${BOLD}  Milestone 2 Verification: Jitsi WebRTC Integration${RESET}`);
  console.log(`${BOLD}====================================================${RESET}`);

  let allPassed = true;

  try {
    await testRoomIdGeneration();
  } catch (err: any) {
    console.error(`  ${RED}✘ Room ID check failed: ${err.message}${RESET}`);
    allPassed = false;
  }

  try {
    await testJwtSigning();
  } catch (err: any) {
    console.error(`  ${RED}✘ JWT signing check failed: ${err.message}${RESET}`);
    allPassed = false;
  }

  try {
    await testJitsiConnectivity();
  } catch (err: any) {
    console.error(`  ${RED}✘ Jitsi connectivity check failed: ${err.message}${RESET}`);
    allPassed = false;
  }

  try {
    await testTenantClassroomIntegration();
  } catch (err: any) {
    console.error(`  ${RED}✘ Multi-tenant flow check failed: ${err.message}${RESET}`);
    allPassed = false;
  }

  console.log(`\n${BOLD}====================================================${RESET}`);
  if (allPassed) {
    console.log(`${GREEN}${BOLD}🎉 ALL MILESTONE 2 JITSI VERIFICATION CHECKS PASSED!${RESET}`);
    console.log(`${BOLD}====================================================${RESET}\n`);
    process.exit(0);
  } else {
    console.log(`${RED}${BOLD}❌ SOME JITSI VERIFICATION CHECKS FAILED.${RESET}`);
    console.log(`${BOLD}====================================================${RESET}\n`);
    process.exit(1);
  }
}

main();