import axios from 'axios';
import crypto from 'crypto';
import { PrismaClient } from '@repo/database';

const prisma = new PrismaClient();
const API_URL = process.env.API_URL || 'http://localhost:8080/v1';
const ADMIN_API_KEY = process.env.ADMIN_API_KEY || 'default_admin_key'; // Update accordingly
const WHATSAPP_APP_SECRET = process.env.WHATSAPP_APP_SECRET || ''; // If set, needed for webhook payload signing

const TEST_PHONE = '221770000000'; // Fake test number

// Helper to sign webhook payload
function generateSignature(payload: string): string {
    if (!WHATSAPP_APP_SECRET) return '';
    const hash = crypto.createHmac('sha256', WHATSAPP_APP_SECRET).update(payload).digest('hex');
    return `sha256=${hash}`;
}

// Helper to simulate incoming WhatsApp Text
async function simulateWhatsAppMessage(phone: string, text: string) {
    const payload = JSON.stringify({
        object: 'whatsapp_business_account',
        entry: [{
            id: 'test_entry',
            changes: [{
                value: {
                    messaging_product: 'whatsapp',
                    metadata: { phone_number_id: 'test_phone_id' },
                    messages: [{
                        from: phone,
                        id: `msg_${Date.now()}`,
                        timestamp: Date.now().toString(),
                        type: 'text',
                        text: { body: text }
                    }]
                },
                field: 'messages'
            }]
        }]
    });

    const headers: Record<string, string> = { 'Content-Type': 'application/json' };
    const signature = generateSignature(payload);
    if (signature) headers['x-hub-signature-256'] = signature;

    try {
        await axios.post(`${API_URL}/whatsapp/webhook`, payload, { headers });
        console.log(`[E2E] Simulated WhatsApp Message from ${phone}: "${text}"`);
    } catch (e: unknown) {
        console.error(`[E2E] Failed to simulate message: ${(e as any).response?.data?.error || (e instanceof Error ? (e instanceof Error ? e.message : String(e)) : String(e))}`);
    }
}

// Helper to sleep for async DB updates
const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));

async function runTests() {
    console.log('🚀 Starting XAMLÉ E2E Journey Test (Sprints 22 & 23)');

    try {
        // 1. Cleanup previous test state
        await prisma.userProgress.deleteMany({ where: { user: { phone: TEST_PHONE } } });
        await prisma.response.deleteMany({ where: { user: { phone: TEST_PHONE } } });
        await prisma.enrollment.deleteMany({ where: { user: { phone: TEST_PHONE } } });
        await prisma.message.deleteMany({ where: { user: { phone: TEST_PHONE } } });
        await prisma.businessProfile.deleteMany({ where: { user: { phone: TEST_PHONE } } });
        await prisma.user.deleteMany({ where: { phone: TEST_PHONE } });
        console.log('[E2E] Cleanup complete.');

        // Initialize User directly for speed, or via onboarding.
        // We'll create the user directly in DB to simulate the exact WOLOF Couture state
        const track = await prisma.track.findFirst({ where: { title: { contains: 'Comprendre son business' } } });
        if (!track) throw new Error("Could not find T1 Track in DB.");

        const user = await prisma.user.create({
            data: {
                phone: TEST_PHONE,
                language: 'WOLOF',
                activity: 'Couture',
            }
        });

        const enrollment = await prisma.enrollment.create({
            data: {
                userId: user.id,
                trackId: track.id,
                currentDay: 1,
                status: 'ACTIVE'
            }
        });

        console.log(`[E2E] Created Test User | ID: ${user.id} | Track: ${track.id} | CurrentDay: 1`);

        // --- TEST 1: ANTI-SAUT ---
        console.log('\n--- TEST 1: ANTI-SAUT ---');
        // Simulate sending a response to Day 1
        console.log(`[E2E] Sending Day 1 Answer...`);
        await simulateWhatsAppMessage(TEST_PHONE, "Couture answer for day 1");
        await sleep(3000); // give time for queue & worker to process AI eval

        // User should normally receive Bravo and then reply 'SUITE'. Let's simulate 'SUITE'.
        console.log(`[E2E] Sending 'SUITE' keyword...`);
        await simulateWhatsAppMessage(TEST_PHONE, "SUITE");
        await sleep(2000);

        const updatedEnrollment = await prisma.enrollment.findFirst({ where: { userId: user.id, trackId: track.id } });
        if (updatedEnrollment?.currentDay === 2) {
            console.log(`✅ [Anti-Saut Test Passed] currentDay est exactement 2.`);
        } else {
            console.error(`❌ [Anti-Saut Test Failed] currentDay is ${updatedEnrollment?.currentDay} instead of 2.`);
        }

        // --- TEST 2: HUMAN-IN-THE-LOOP ---
        console.log('\n--- TEST 2: HUMAN-IN-THE-LOOP (WOLOF AUDIO) ---');
        // Since we can't easily mock an audio upload to Meta right now, we will manually insert a `PENDING_REVIEW`
        // into the tracking flow. Actually, we can trigger the Worker indirectly, but inserting the userProgress
        // to mimic Wolof interception is simpler for an E2E API test.

        console.log(`[E2E] Simulating WOLOF Interception (Setting PENDING_REVIEW)...`);
        await prisma.userProgress.upsert({
            where: { userId_trackId: { userId: user.id, trackId: track.id } },
            update: { exerciseStatus: 'PENDING_REVIEW' as any },
            create: { userId: user.id, trackId: track.id, exerciseStatus: 'PENDING_REVIEW' as any }
        });

        const preReview = await prisma.userProgress.findUnique({ where: { userId_trackId: { userId: user.id, trackId: track.id } } });
        if ((preReview?.exerciseStatus as string) === 'PENDING_REVIEW') {
            console.log(`✅ [Human-in-the-Loop] Status correctly set to PENDING_REVIEW.`);
        }

        console.log(`[E2E] Admin calling POST /admin/override-feedback...`);
        try {
            const adminRes = await axios.post(`${API_URL}/admin/override-feedback`, {
                userId: user.id,
                trackId: track.id,
                transcription: 'Traduction manuelle validée de la couture.',
                overrideAudioUrl: 'https://fake-s3-url.com/audio.webm',
                adminId: 'E2E_ADMIN'
            }, {
                headers: { 'Authorization': `Bearer ${ADMIN_API_KEY}` }
            });
            console.log(`[E2E] Admin Overdrive Response: ${adminRes.status}`);

            // Wait for BullMQ to process the overdrive logic and send SUITE automatically
            await sleep(4000);

            const postReview = await prisma.userProgress.findUnique({ where: { userId_trackId: { userId: user.id, trackId: track.id } } });
            const progressEnrollment = await prisma.enrollment.findFirst({ where: { userId: user.id, trackId: track.id } });

            if ((postReview?.exerciseStatus as string) === 'COMPLETED' && progressEnrollment?.currentDay === 3) {
                console.log(`✅ [Human-in-the-Loop Test Passed] User unlocked & progressed to Day 3.`);
            } else {
                console.log(`⚠️  [Human-in-the-Loop Note] exerciseStatus: ${postReview?.exerciseStatus}, currentDay: ${progressEnrollment?.currentDay}`);
            }

        } catch (e: unknown) {
            console.error(`❌ [Human-in-the-Loop Test Failed] API Error: ${(e as any).response?.data?.error || (e instanceof Error ? (e instanceof Error ? e.message : String(e)) : String(e))}`);
        }

        // --- TEST 3: BADGE GUARD ---
        console.log('\n--- TEST 3: BADGE GUARD VERIFICATION ---');
        // Inject a REPRISE badge and force currentDay to 3.5 (Fractional)
        await prisma.userProgress.update({
            where: { userId_trackId: { userId: user.id, trackId: track.id } },
            data: { badges: ['CLARTÉ', 'REPRISE'] }
        });
        await prisma.enrollment.update({
            where: { id: enrollment.id },
            data: { currentDay: 3.5 }
        });

        console.log(`[E2E] User has Badges: ['CLARTÉ', 'REPRISE'] on Day 3.5`);
        // Simulating the pedagogy send logic. If we were to send SUITE now, it would increment to 4 and trigger pedagogy.ts.
        console.log(`[E2E] Sending 'SUITE' to trigger Day 4 (which should NOT show REPRISE badge)...`);
        await simulateWhatsAppMessage(TEST_PHONE, "SUITE");
        await sleep(3000);

        const finalEnrollment = await prisma.enrollment.findFirst({ where: { userId: user.id, trackId: track.id } });
        console.log(`[E2E] Final Day is now: ${finalEnrollment?.currentDay}. Check server logs above for [Badge Guard] isVisible: false.`);

        console.log('\n🎉 All specified E2E simulations completed.');
        process.exit(0);

    } catch (error) {
        console.error('❌ E2E Test Execution Failed:', error);
        process.exit(1);
    }
}

runTests();