import { FastifyInstance } from 'fastify';
import { Prisma } from '@repo/database';
import { prisma } from '../services/prisma';
import { logger } from '../logger';
import { z } from 'zod';
import { redis } from '../lib/redis';
import { whatsappQueue } from '../services/queue';

export async function superAdminRoutes(fastify: FastifyInstance) {

    fastify.addHook('preHandler', async (request: any, reply) => {
        const role = request.user?.role;
        if (role !== 'SUPER_ADMIN') {
            return reply.code(403).send({ error: 'Super admin access required' });
        }
    });

    // ── Platform Stats ────────────────────────────────────────────────────────
    fastify.get('/platform/stats', async (_req, reply) => {
        try {
            const since24h = new Date(Date.now() - 24 * 60 * 60 * 1000);
            const since30d = new Date(Date.now() - 30 * 24 * 60 * 60 * 1000);

            const [orgsCount, usersCount, messagesLast24h, revenueAgg, queueCounts] = await Promise.all([
                prisma.organization.count(),
                prisma.user.count({ where: { deletedAt: null } }),
                prisma.message.count({ where: { createdAt: { gte: since24h } } }),
                prisma.walletTransaction.aggregate({
                    where: { type: 'TOP_UP_MANUAL', createdAt: { gte: since30d } },
                    _sum: { amount: true }
                }),
                Promise.all([
                    whatsappQueue.getWaitingCount(),
                    whatsappQueue.getFailedCount(),
                    whatsappQueue.getActiveCount(),
                ]).catch(() => [0, 0, 0]),
            ]);

            const activeOrgs = await prisma.organization.count({
                where: { isHardStopped: false }
            });

            return {
                orgsCount,
                activeOrgs,
                usersCount,
                messagesLast24h,
                queueDepth: Array.isArray(queueCounts) ? (queueCounts[0] + queueCounts[2]) : 0,
                queueFailed: Array.isArray(queueCounts) ? queueCounts[1] : 0,
                revenueThisMonth: revenueAgg._sum.amount ?? 0,
            };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] platform/stats failed');
            return reply.code(500).send({ error: 'Failed to fetch platform stats' });
        }
    });

    // ── Organizations ─────────────────────────────────────────────────────────
    fastify.get('/organizations', async (req, reply) => {
        const QuerySchema = z.object({
            page: z.coerce.number().int().positive().default(1),
            limit: z.coerce.number().int().positive().max(100).default(20),
            search: z.string().optional(),
            plan: z.string().optional(),
        });
        const parsed = QuerySchema.safeParse(req.query);
        if (!parsed.success) return reply.code(400).send({ error: 'Invalid query params' });

        const { page, limit, search, plan } = parsed.data;
        const where: any = {};
        if (search) where.name = { contains: search, mode: 'insensitive' };
        if (plan) where.subscriptionPlan = plan;

        try {
            const [orgs, total] = await Promise.all([
                prisma.organization.findMany({
                    where,
                    select: {
                        id: true, name: true, wabaId: true, walletBalance: true,
                        subscriptionPlan: true, subscriptionStatus: true, isHardStopped: true,
                        createdAt: true, mode: true, isCrmActive: true, isEdTechActive: true,
                        _count: { select: { users: true } }
                    },
                    orderBy: { createdAt: 'desc' },
                    skip: (page - 1) * limit,
                    take: limit,
                }),
                prisma.organization.count({ where }),
            ]);
            return { data: orgs.map(o => ({ ...o, userCount: o._count.users })), total, page, limit };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] organizations list failed');
            return reply.code(500).send({ error: 'Failed to list organizations' });
        }
    });

    fastify.post('/organizations', async (req, reply) => {
        const Schema = z.object({
            name: z.string().min(1),
            subscriptionPlan: z.enum(['STARTER', 'GROWTH', 'SCALE', 'ENTERPRISE']).default('STARTER'),
            aiCreditsLimit: z.number().int().positive().default(500),
            isCrmActive: z.boolean().default(false),
            isEdTechActive: z.boolean().default(true),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        try {
            const org = await prisma.organization.create({ data: body.data });
            return reply.code(201).send(org);
        } catch (err: any) {
            logger.error({ err }, '[SUPER_ADMIN] org create failed');
            return reply.code(500).send({ error: 'Failed to create organization' });
        }
    });

    fastify.patch<{ Params: { id: string } }>('/organizations/:id', async (req, reply) => {
        const Schema = z.object({
            name: z.string().min(1).optional(),
            subscriptionPlan: z.enum(['STARTER', 'GROWTH', 'SCALE', 'ENTERPRISE']).optional(),
            subscriptionStatus: z.string().optional(),
            aiCreditsLimit: z.number().int().positive().optional(),
            isHardStopped: z.boolean().optional(),
            isCrmActive: z.boolean().optional(),
            isEdTechActive: z.boolean().optional(),
            walletBalance: z.number().int().optional(),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        try {
            const org = await prisma.organization.update({
                where: { id: req.params.id },
                data: body.data,
            });
            return org;
        } catch (err: any) {
            logger.error({ err, orgId: req.params.id }, '[SUPER_ADMIN] org update failed');
            if (err.code === 'P2025') return reply.code(404).send({ error: 'Organization not found' });
            return reply.code(500).send({ error: 'Failed to update organization' });
        }
    });

    // Suspend / activate shortcut
    fastify.post<{ Params: { id: string } }>('/organizations/:id/suspend', async (req, reply) => {
        const Schema = z.object({ suspend: z.boolean() });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });
        try {
            await prisma.organization.update({
                where: { id: req.params.id },
                data: { isHardStopped: body.data.suspend, subscriptionStatus: body.data.suspend ? 'SUSPENDED' : 'ACTIVE' }
            });
            return { ok: true };
        } catch (err: any) {
            if (err.code === 'P2025') return reply.code(404).send({ error: 'Organization not found' });
            return reply.code(500).send({ error: 'Failed to suspend organization' });
        }
    });

    // Soft-delete — sets subscriptionStatus to DELETED and hard-stops
    fastify.delete<{ Params: { id: string } }>('/organizations/:id', async (req, reply) => {
        try {
            const org = await prisma.organization.findUnique({ where: { id: req.params.id }, select: { id: true, name: true } });
            if (!org) return reply.code(404).send({ error: 'Organization not found' });
            await prisma.organization.update({
                where: { id: req.params.id },
                data: { subscriptionStatus: 'DELETED', isHardStopped: true },
            });
            logger.info({ orgId: req.params.id, actor: (req as any).user?.id }, '[SUPER_ADMIN] Organization soft-deleted');
            return { ok: true };
        } catch (err) {
            return reply.code(500).send({ error: 'Delete failed' });
        }
    });

    // Impersonation — returns a short-lived JWT scoped to the target org
    fastify.post<{ Params: { id: string } }>('/organizations/:id/impersonate', async (req, reply) => {
        try {
            const org = await prisma.organization.findUnique({ where: { id: req.params.id }, select: { id: true, name: true } });
            if (!org) return reply.code(404).send({ error: 'Organization not found' });

            const impersonateToken = (fastify as any).jwt.sign(
                { id: (req as any).user.id, role: 'ORG_ADMIN', organizationId: org.id, impersonating: true },
                { expiresIn: '1h' }
            );
            return { token: impersonateToken, orgName: org.name };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] impersonate failed');
            return reply.code(500).send({ error: 'Impersonation failed' });
        }
    });

    // ── Users (cross-org) ─────────────────────────────────────────────────────
    fastify.get('/users', async (req, reply) => {
        const QuerySchema = z.object({
            page: z.coerce.number().int().positive().default(1),
            limit: z.coerce.number().int().positive().max(100).default(20),
            orgId: z.string().optional(),
            role: z.string().optional(),
            search: z.string().optional(),
        });
        const parsed = QuerySchema.safeParse(req.query);
        if (!parsed.success) return reply.code(400).send({ error: 'Invalid query params' });

        const { page, limit, orgId, role, search } = parsed.data;
        const where: any = { deletedAt: null };
        if (orgId) where.organizationId = orgId;
        if (role) where.role = role;
        if (search) where.OR = [
            { name: { contains: search, mode: 'insensitive' } },
            { email: { contains: search, mode: 'insensitive' } },
        ];

        try {
            const [users, total] = await Promise.all([
                prisma.user.findMany({
                    where,
                    select: { id: true, name: true, email: true, phone: true, role: true, organizationId: true, createdAt: true, lastActivityAt: true,
                        organization: { select: { name: true } }
                    },
                    orderBy: { createdAt: 'desc' },
                    skip: (page - 1) * limit,
                    take: limit,
                }),
                prisma.user.count({ where }),
            ]);
            return { data: users, total, page, limit };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] users list failed');
            return reply.code(500).send({ error: 'Failed to list users' });
        }
    });

    fastify.patch<{ Params: { userId: string } }>('/users/:userId/role', async (req, reply) => {
        const Schema = z.object({ role: z.enum(['STUDENT', 'ORG_MEMBER', 'ORG_ADMIN', 'ADMIN', 'SUPER_ADMIN']) });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });
        try {
            const user = await prisma.user.update({ where: { id: req.params.userId }, data: { role: body.data.role } });
            return { ok: true, role: user.role };
        } catch (err: any) {
            if (err.code === 'P2025') return reply.code(404).send({ error: 'User not found' });
            return reply.code(500).send({ error: 'Failed to update role' });
        }
    });

    // Reset password — generates a 1h JWT reset token and emails a link
    fastify.post<{ Params: { userId: string } }>('/users/:userId/reset-password', async (req, reply) => {
        try {
            const user = await prisma.user.findUnique({ where: { id: req.params.userId }, select: { id: true, email: true, name: true } });
            if (!user) return reply.code(404).send({ error: 'User not found' });
            if (!user.email) return reply.code(400).send({ error: 'User has no email address' });

            const resetToken = (fastify as any).jwt.sign(
                { id: user.id, purpose: 'reset' },
                { expiresIn: '1h' }
            ) as string;
            const adminUrl = process.env.ADMIN_URL || 'https://edtechadmin.netlify.app';
            const resetLink = `${adminUrl}/reset-password?token=${resetToken}`;

            const { scheduleEmail } = await import('../services/queue');
            await scheduleEmail({
                to: user.email,
                subject: 'Réinitialisation de votre mot de passe — XAMLÉ (admin)',
                htmlContent: `<p>Bonjour ${user.name ?? ''},</p>
<p>Un administrateur a déclenché une réinitialisation de votre mot de passe. Cliquez ci-dessous pour définir un nouveau mot de passe. Ce lien expire dans <strong>1 heure</strong>.</p>
<p><a href="${resetLink}" style="background:#4f46e5;color:#fff;padding:12px 24px;border-radius:8px;text-decoration:none;font-weight:bold;">Réinitialiser mon mot de passe</a></p>
<p>Si vous n'attendiez pas cet email, contactez votre administrateur.</p>`,
            });

            logger.info({ userId: user.id, actor: (req as any).user?.id }, '[SUPER_ADMIN] Password reset email sent');
            return { ok: true, email: user.email };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] reset-password failed');
            return reply.code(500).send({ error: 'Failed to send reset email' });
        }
    });

    // ── WhatsApp Numbers (cross-org) ──────────────────────────────────────────
    fastify.get('/whatsapp/numbers', async (_req, reply) => {
        try {
            const numbers = await prisma.whatsAppPhoneNumber.findMany({
                include: { organization: { select: { id: true, name: true } } },
                orderBy: { createdAt: 'desc' },
            });
            return { data: numbers };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] whatsapp numbers failed');
            return reply.code(500).send({ error: 'Failed to list phone numbers' });
        }
    });

    // ── WhatsApp Number Registration (OTP flow) ───────────────────────────────

    // Step 1 — Trigger Meta to send OTP to the phone number
    fastify.post('/whatsapp/numbers/register', async (req, reply) => {
        const Schema = z.object({
            orgId: z.string(),
            phoneNumberId: z.string(),
            pin: z.string().length(6).regex(/^\d{6}$/).default('000000'),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        const { orgId, phoneNumberId, pin } = body.data;
        try {
            const { decryptSecrets } = await import('../services/organization');
            const { whatsappService } = await import('../services/whatsapp');
            const org = await prisma.organization.findUnique({
                where: { id: orgId },
                select: { id: true, name: true, systemUserToken: true, wabaId: true, systemUserTokenIssuedAt: true, webhookSecret: true },
            });
            if (!org) return reply.code(404).send({ error: 'Organization not found' });
            if (!org.systemUserToken) return reply.code(400).send({ error: 'Organization has no systemUserToken configured' });

            const decrypted = decryptSecrets(org as any);
            const result = await whatsappService.registerPhoneNumber({ accessToken: decrypted.systemUserToken! }, phoneNumberId, pin);

            logger.info({ orgId, phoneNumberId, actor: (req as any).user?.id }, '[SUPER_ADMIN] Phone number registration initiated');
            return { ok: true, metaResponse: result };
        } catch (err: any) {
            const detail = err.response?.data?.error?.message ?? err.message;
            return reply.code(502).send({ error: 'Meta API error', detail });
        }
    });

    // Step 2 — Verify OTP sent by Meta
    fastify.post('/whatsapp/numbers/verify', async (req, reply) => {
        const Schema = z.object({
            orgId: z.string(),
            phoneNumberId: z.string(),
            code: z.string().min(4).max(8),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        const { orgId, phoneNumberId, code } = body.data;
        try {
            const { decryptSecrets } = await import('../services/organization');
            const { whatsappService } = await import('../services/whatsapp');
            const org = await prisma.organization.findUnique({
                where: { id: orgId },
                select: { id: true, name: true, systemUserToken: true, webhookSecret: true, systemUserTokenIssuedAt: true },
            });
            if (!org) return reply.code(404).send({ error: 'Organization not found' });
            if (!org.systemUserToken) return reply.code(400).send({ error: 'Organization has no systemUserToken configured' });

            const decrypted = decryptSecrets(org as any);
            const result = await whatsappService.verifyPhoneNumber({ accessToken: decrypted.systemUserToken! }, phoneNumberId, code);

            logger.info({ orgId, phoneNumberId, actor: (req as any).user?.id }, '[SUPER_ADMIN] Phone number verified');
            return { ok: true, metaResponse: result };
        } catch (err: any) {
            const detail = err.response?.data?.error?.message ?? err.message;
            return reply.code(502).send({ error: 'Meta verification failed', detail });
        }
    });

    // ── WhatsApp Template Creation (cross-org) ────────────────────────────────
    fastify.post('/whatsapp/templates', async (req, reply) => {
        const Schema = z.object({
            orgId: z.string(),
            name: z.string().min(1).regex(/^[a-z0-9_]+$/, 'Template name must be lowercase snake_case'),
            category: z.enum(['MARKETING', 'UTILITY', 'AUTHENTICATION']),
            language: z.string().min(2),
            body: z.string().min(1).max(1024),
            header: z.string().max(60).optional(),
            footer: z.string().max(60).optional(),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        const { orgId, name, category, language, body: bodyText, header, footer } = body.data;
        try {
            const { decryptSecrets } = await import('../services/organization');
            const { whatsappService } = await import('../services/whatsapp');
            const org = await prisma.organization.findUnique({
                where: { id: orgId },
                select: { id: true, name: true, wabaId: true, systemUserToken: true, webhookSecret: true, systemUserTokenIssuedAt: true },
            });
            if (!org) return reply.code(404).send({ error: 'Organization not found' });
            if (!org.wabaId || !org.systemUserToken) return reply.code(400).send({ error: 'Organization WhatsApp not configured' });

            const decrypted = decryptSecrets(org as any);

            const components: any[] = [];
            if (header) components.push({ type: 'HEADER', format: 'TEXT', text: header });
            components.push({ type: 'BODY', text: bodyText });
            if (footer) components.push({ type: 'FOOTER', text: footer });

            const result = await whatsappService.createMetaTemplate(
                { accessToken: decrypted.systemUserToken!, wabaId: org.wabaId },
                { name, category, language, components }
            );

            await prisma.auditLog.create({
                data: {
                    action: 'SUPER_ADMIN_CREATE_TEMPLATE',
                    actorId: (req as any).user?.id,
                    resourceId: orgId,
                    details: { templateName: name, category, language },
                },
            });

            logger.info({ orgId, templateName: name, actor: (req as any).user?.id }, '[SUPER_ADMIN] Template created');
            return { ok: true, template: result };
        } catch (err: any) {
            const detail = err.response?.data?.error?.message ?? err.message;
            return reply.code(502).send({ error: 'Meta API error', detail });
        }
    });

    // ── Billing ───────────────────────────────────────────────────────────────
    fastify.get('/billing/transactions', async (req, reply) => {
        const QuerySchema = z.object({
            page: z.coerce.number().int().positive().default(1),
            limit: z.coerce.number().int().positive().max(100).default(20),
            orgId: z.string().optional(),
        });
        const parsed = QuerySchema.safeParse(req.query);
        if (!parsed.success) return reply.code(400).send({ error: 'Invalid query params' });

        const { page, limit, orgId } = parsed.data;
        const where: any = {};
        if (orgId) where.organizationId = orgId;

        try {
            const [txns, total] = await Promise.all([
                prisma.walletTransaction.findMany({
                    where,
                    include: { organization: { select: { id: true, name: true } } },
                    orderBy: { createdAt: 'desc' },
                    skip: (page - 1) * limit,
                    take: limit,
                }),
                prisma.walletTransaction.count({ where }),
            ]);
            return { data: txns, total, page, limit };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] billing transactions failed');
            return reply.code(500).send({ error: 'Failed to list transactions' });
        }
    });

    fastify.post('/billing/credits', async (req, reply) => {
        const Schema = z.object({
            orgId: z.string(),
            amount: z.number().int().positive(),
            description: z.string().optional(),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        try {
            const orgExists = await prisma.organization.findUnique({ where: { id: body.data.orgId }, select: { id: true } });
            if (!orgExists) return reply.code(404).send({ error: 'Organization not found' });

            const { orgId, amount, description } = body.data;
            const updated = await prisma.$transaction(async (tx) => {
                const org = await tx.organization.update({
                    where: { id: orgId },
                    data: { walletBalance: { increment: amount } },
                    select: { walletBalance: true, name: true },
                });
                const txn = await tx.walletTransaction.create({
                    data: {
                        organizationId: orgId,
                        amount,
                        balanceAfter: org.walletBalance,
                        type: 'TOP_UP_MANUAL',
                        description: description || 'Manual credit by super-admin',
                        actorId: (req as any).user?.id,
                    },
                });
                return { org, txn };
            });
            return { ok: true, newBalance: updated.org.walletBalance, transactionId: updated.txn.id };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] add credits failed');
            return reply.code(500).send({ error: 'Failed to add credits' });
        }
    });

    // ── Monitoring ────────────────────────────────────────────────────────────
    fastify.get('/monitoring/health', async (_req, reply) => {
        try {
            const [dbPing, redisPing, queueWaiting, queueFailed, queueActive] = await Promise.all([
                prisma.$queryRaw`SELECT 1`.then(() => true).catch(() => false),
                redis.ping().then(() => true).catch(() => false),
                whatsappQueue.getWaitingCount().catch(() => -1),
                whatsappQueue.getFailedCount().catch(() => -1),
                whatsappQueue.getActiveCount().catch(() => -1),
            ]);

            // Token expiry check — find orgs with systemUserTokenIssuedAt older than 50 days
            const tokenExpiryThreshold = new Date(Date.now() - 50 * 24 * 60 * 60 * 1000);
            const expiringTokenOrgs = await prisma.organization.findMany({
                where: {
                    systemUserTokenIssuedAt: { lte: tokenExpiryThreshold },
                    systemUserToken: { not: null }
                },
                select: { id: true, name: true, systemUserTokenIssuedAt: true }
            });

            // Low wallet balance
            const lowBalanceOrgs = await prisma.organization.findMany({
                where: { walletBalance: { lt: 100 }, isHardStopped: false },
                select: { id: true, name: true, walletBalance: true }
            });

            return {
                db: { ok: dbPing },
                redis: { ok: redisPing },
                queue: { waiting: queueWaiting, failed: queueFailed, active: queueActive },
                tokenExpiries: expiringTokenOrgs.map(o => ({
                    orgId: o.id,
                    orgName: o.name,
                    issuedAt: o.systemUserTokenIssuedAt,
                    daysOld: o.systemUserTokenIssuedAt
                        ? Math.floor((Date.now() - o.systemUserTokenIssuedAt.getTime()) / (24 * 60 * 60 * 1000))
                        : null
                })),
                lowBalanceOrgs,
            };
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] monitoring failed');
            return reply.code(500).send({ error: 'Failed to fetch monitoring data' });
        }
    });

    // ── AI Agentic Command ────────────────────────────────────────────────────
    fastify.post('/ai/command', async (req, reply) => {
        const Schema = z.object({
            command: z.string().min(1),
            confirm: z.boolean().default(false),
            pendingAction: z.object({
                action: z.string(),
                params: z.record(z.unknown()),
            }).optional(),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        const { command, confirm, pendingAction } = body.data;

        // If confirming a pending action
        if (confirm && pendingAction) {
            return executeSuperAdminAction(pendingAction.action, pendingAction.params, req, reply);
        }

        // Parse command with AI
        const { aiService } = await import('../services/ai');
        const { z: zod } = await import('zod');

        const CommandSchema = zod.object({
            action: zod.enum(['QUERY_STATS', 'LIST_ORGS', 'SUSPEND_ORG', 'ACTIVATE_ORG', 'ADD_CREDITS', 'LIST_LOW_BALANCE', 'LIST_ALERTS', 'LIST_USERS']),
            params: zod.record(zod.unknown()).default({}),
            confirmation_required: zod.boolean(),
            human_summary: zod.string(),
        });

        try {
            const systemPrompt = `You are a super-admin AI assistant for the XAMLÉ platform. Parse the admin's command and return a structured action.
Available actions:
- QUERY_STATS: Get platform statistics (no params needed)
- LIST_ORGS: List organizations (params: search?, plan?)
- SUSPEND_ORG: Suspend an organization (params: orgName or orgId) — confirmation required
- ACTIVATE_ORG: Reactivate a suspended org (params: orgName or orgId) — confirmation required
- ADD_CREDITS: Add wallet credits to an org (params: orgName or orgId, amount) — confirmation required
- LIST_LOW_BALANCE: List orgs with low wallet balance
- LIST_ALERTS: List monitoring alerts
- LIST_USERS: List users (params: orgName?, role?)

Always extract organization names and amounts from the command. Set confirmation_required=true for destructive or financial actions.`;

            const { data: parsed } = await aiService.generateStructuredData(
                `${systemPrompt}\n\nAdmin command: "${command}"`,
                CommandSchema,
                0.1
            );

            if (parsed.confirmation_required) {
                return {
                    status: 'pending_confirmation',
                    summary: parsed.human_summary,
                    action: parsed.action,
                    params: parsed.params,
                };
            }

            return executeSuperAdminAction(parsed.action, parsed.params ?? {}, req, reply);
        } catch (err) {
            logger.error({ err }, '[SUPER_ADMIN] AI command failed');
            return reply.code(503).send({ error: 'AI service unavailable' });
        }
    });

    // ── Audit Logs ────────────────────────────────────────────────────────────
    fastify.get('/audit-logs', async (req, _reply) => {
        const q = req.query as { page?: string; limit?: string; orgId?: string; actorId?: string; action?: string; from?: string; to?: string };
        const page  = Math.max(1, parseInt(q.page  ?? '1'));
        const limit = Math.min(100, parseInt(q.limit ?? '50'));

        const where: any = {};
        if (q.orgId)   where.resourceId = q.orgId;
        if (q.actorId) where.actorId    = q.actorId;
        if (q.action)  where.action     = { contains: q.action, mode: 'insensitive' };
        if (q.from || q.to) {
            where.createdAt = {};
            if (q.from) where.createdAt.gte = new Date(q.from);
            if (q.to)   where.createdAt.lte = new Date(q.to);
        }

        const [logs, total] = await Promise.all([
            prisma.auditLog.findMany({
                where,
                orderBy: { createdAt: 'desc' },
                skip: (page - 1) * limit,
                take: limit,
            }),
            prisma.auditLog.count({ where }),
        ]);

        return { logs, total, page, limit };
    });

    // ── WhatsApp Profiles ─────────────────────────────────────────────────────
    fastify.get('/whatsapp/profiles', async (_req, _reply) => {
        const orgs = await prisma.organization.findMany({
            orderBy: { createdAt: 'desc' },
            select: {
                id: true, name: true, wabaId: true,
                brandingData: true, subscriptionPlan: true, subscriptionStatus: true,
                systemUserTokenIssuedAt: true, createdAt: true,
            },
        });
        return { profiles: orgs };
    });

    fastify.patch<{ Params: { id: string } }>('/whatsapp/profiles/:id', async (req, reply) => {
        const Schema = z.object({
            name: z.string().min(1).optional(),
            brandingData: z.record(z.unknown()).optional(),
        });
        const body = Schema.safeParse(req.body);
        if (!body.success) return reply.code(400).send({ error: body.error.flatten() });

        const org = await prisma.organization.findUnique({ where: { id: req.params.id } });
        if (!org) return reply.code(404).send({ error: 'Organization not found' });

        const updated = await prisma.organization.update({
            where: { id: req.params.id },
            data: {
                ...(body.data.name && { name: body.data.name }),
                ...(body.data.brandingData && { brandingData: body.data.brandingData as Prisma.InputJsonValue }),
            },
            select: { id: true, name: true, brandingData: true },
        });
        return updated;
    });

    // ── WhatsApp Templates (cross-org) ────────────────────────────────────────
    fastify.get('/whatsapp/templates', async (_req, _reply) => {
        const orgs = await prisma.organization.findMany({
            where: { wabaId: { not: null }, subscriptionStatus: 'ACTIVE' },
            select: { id: true, name: true, wabaId: true, subscriptionPlan: true },
            orderBy: { name: 'asc' },
        });
        return { orgs };
    });
}

async function executeSuperAdminAction(action: string, params: Record<string, unknown>, req: any, reply: any) {
    try {
        switch (action) {
            case 'QUERY_STATS': {
                const since24h = new Date(Date.now() - 24 * 60 * 60 * 1000);
                const [orgsCount, usersCount, messagesLast24h] = await Promise.all([
                    prisma.organization.count(),
                    prisma.user.count({ where: { deletedAt: null } }),
                    prisma.message.count({ where: { createdAt: { gte: since24h } } }),
                ]);
                return { status: 'success', result: { orgsCount, usersCount, messagesLast24h } };
            }
            case 'LIST_ORGS': {
                const orgs = await prisma.organization.findMany({
                    where: params.search ? { name: { contains: params.search as string, mode: 'insensitive' } } : undefined,
                    select: { id: true, name: true, subscriptionPlan: true, walletBalance: true, isHardStopped: true },
                    take: 20,
                    orderBy: { createdAt: 'desc' },
                });
                return { status: 'success', result: orgs };
            }
            case 'LIST_LOW_BALANCE': {
                const orgs = await prisma.organization.findMany({
                    where: { walletBalance: { lt: 100 } },
                    select: { id: true, name: true, walletBalance: true },
                    orderBy: { walletBalance: 'asc' },
                });
                return { status: 'success', result: orgs };
            }
            case 'LIST_ALERTS': {
                const tokenThreshold = new Date(Date.now() - 50 * 24 * 60 * 60 * 1000);
                const [expiringTokens, lowBalance] = await Promise.all([
                    prisma.organization.findMany({
                        where: { systemUserTokenIssuedAt: { lte: tokenThreshold }, systemUserToken: { not: null } },
                        select: { id: true, name: true, systemUserTokenIssuedAt: true },
                    }),
                    prisma.organization.findMany({
                        where: { walletBalance: { lt: 100 } },
                        select: { id: true, name: true, walletBalance: true },
                    }),
                ]);
                return { status: 'success', result: { expiringTokens, lowBalance } };
            }
            case 'SUSPEND_ORG':
            case 'ACTIVATE_ORG': {
                const suspend = action === 'SUSPEND_ORG';
                const orgSearch = (params.orgName || params.orgId) as string;
                const org = await prisma.organization.findFirst({
                    where: params.orgId
                        ? { id: params.orgId as string }
                        : { name: { contains: orgSearch, mode: 'insensitive' } }
                });
                if (!org) return reply.code(404).send({ error: `Organization not found: ${orgSearch}` });
                // When matched by name (not by unambiguous ID), require exact match or surface a confirmation
                if (!params.orgId) {
                    const exactMatch = org.name.toLowerCase() === (orgSearch as string).toLowerCase();
                    if (!exactMatch) {
                        return {
                            status: 'pending_confirmation',
                            summary: `Found org '${org.name}' — is this the right one? Confirm to proceed.`,
                            action,
                            params: { ...params, orgId: org.id },
                        };
                    }
                }
                await prisma.organization.update({
                    where: { id: org.id },
                    data: { isHardStopped: suspend, subscriptionStatus: suspend ? 'SUSPENDED' : 'ACTIVE' }
                });
                return { status: 'success', result: { orgId: org.id, orgName: org.name, action: suspend ? 'suspended' : 'activated' } };
            }
            case 'ADD_CREDITS': {
                const orgSearch = (params.orgName || params.orgId) as string;
                const amount = typeof params.amount === 'number' ? params.amount : parseInt(params.amount as string, 10);
                if (!amount || amount <= 0) return reply.code(400).send({ error: 'Invalid amount' });
                const org = await prisma.organization.findFirst({
                    where: params.orgId
                        ? { id: params.orgId as string }
                        : { name: { contains: orgSearch, mode: 'insensitive' } }
                });
                if (!org) return reply.code(404).send({ error: `Organization not found: ${orgSearch}` });
                // When matched by name (not by unambiguous ID), require exact match or surface a confirmation
                if (!params.orgId) {
                    const exactMatch = org.name.toLowerCase() === (orgSearch as string).toLowerCase();
                    if (!exactMatch) {
                        return {
                            status: 'pending_confirmation',
                            summary: `Found org '${org.name}' — is this the right one? Confirm to proceed.`,
                            action,
                            params: { ...params, orgId: org.id },
                        };
                    }
                }
                const newBalance = org.walletBalance + amount;
                await prisma.$transaction([
                    prisma.organization.update({ where: { id: org.id }, data: { walletBalance: newBalance } }),
                    prisma.walletTransaction.create({
                        data: {
                            organizationId: org.id,
                            amount,
                            balanceAfter: newBalance,
                            type: 'TOP_UP_MANUAL',
                            description: `Super-admin AI command: add ${amount} credits`,
                            actorId: req.user?.id,
                        }
                    })
                ]);
                return { status: 'success', result: { orgId: org.id, orgName: org.name, amount, newBalance } };
            }
            case 'LIST_USERS': {
                const where: any = { deletedAt: null };
                if (params.role) where.role = params.role;
                if (params.orgName) {
                    const org = await prisma.organization.findFirst({ where: { name: { contains: params.orgName as string, mode: 'insensitive' } } });
                    if (org) where.organizationId = org.id;
                }
                const users = await prisma.user.findMany({ where, select: { id: true, name: true, email: true, role: true, organizationId: true }, take: 20 });
                return { status: 'success', result: users };
            }
            default:
                return reply.code(400).send({ error: `Unknown action: ${action}` });
        }
    } catch (err) {
        logger.error({ err, action }, '[SUPER_ADMIN] action execution failed');
        return reply.code(500).send({ error: 'Action execution failed' });
    }
}