'use client';

import React, { useState, useEffect } from 'react';
import Link from 'next/link';
import {
    Plus, Search, Building2, Copy, Check, Pencil, Trash2,
    ExternalLink, Globe, LayoutGrid, List, AlertCircle, X,
    DollarSign, Wallet, ArrowRight, ShieldCheck, Loader2,
    Coins, History
} from 'lucide-react';

export default function MerchantsPage() {
    const [merchants, setMerchants] = useState<any[]>([]);
    const [isLoading, setIsLoading] = useState(true);
    const [treasuryData, setTreasuryData] = useState<any>(null);
    const [isLoadingTreasury, setIsLoadingTreasury] = useState(true);
    const [copiedId, setCopiedId] = useState<string | null>(null);
    const [showEditModal, setShowEditModal] = useState(false);
    const [showPayoutModal, setShowPayoutModal] = useState(false);
    const [selectedMerchant, setSelectedMerchant] = useState<any>(null);
    const [payoutAmount, setPayoutAmount] = useState<string>('');
    const [payoutNetwork, setPayoutNetwork] = useState<string>('POLYGON');
    const [payoutCurrency, setPayoutCurrency] = useState<string>('USDT');
    const [merchantBalances, setMerchantBalances] = useState<any[]>([]);
    const [merchantFeePercent, setMerchantFeePercent] = useState<number>(1);
    const [isSubmitting, setIsSubmitting] = useState(false);
    const [editForm, setEditForm] = useState({
        name: '',
        webhook_url: '',
        fee_percent: '',
        payout_address: '',
        payout_addresses: { EVM: '', SOLANA: '', TRON: '', BITCOIN: '' } as Record<string, string>
    });
    const [isUpdating, setIsUpdating] = useState(false);

    useEffect(() => {
        fetchMerchants();
        fetchTreasury();
    }, []);

    const fetchTreasury = async () => {
        setIsLoadingTreasury(true);
        try {
            const res = await fetch('/api/admin/treasury/balances');
            const data = await res.json();
            if (res.ok) setTreasuryData(data.balances);
        } catch (e) {
            console.error(e);
        } finally {
            setIsLoadingTreasury(false);
        }
    };

    const fetchMerchants = async () => {
        setIsLoading(true);
        try {
            const response = await fetch('/api/merchants');
            const data = await response.json();
            if (!response.ok) throw new Error(data.error);
            setMerchants(data);
        } catch (err) {
            console.error('Fetch error:', err);
        } finally {
            setIsLoading(false);
        }
    };

    const copyToClipboard = (text: string, id: string) => {
        navigator.clipboard.writeText(text);
        setCopiedId(id);
        setTimeout(() => setCopiedId(null), 2000);
    };

    const handleEditClick = (merchant: any) => {
        setSelectedMerchant(merchant);
        setEditForm({
            name: merchant.name,
            webhook_url: merchant.webhook_url || '',
            fee_percent: merchant.fee_percent?.toString() || '1.0',
            payout_address: merchant.payout_address || '',
            payout_addresses: merchant.payout_addresses || { EVM: '', SOLANA: '', TRON: '', BITCOIN: '' }
        });
        setShowEditModal(true);
    };

    const handlePayoutClick = async (merchant: any) => {
        setSelectedMerchant(merchant);
        setPayoutAmount('');
        setShowPayoutModal(true);
        // Fetch merchant's per-network balances
        try {
            const res = await fetch(`/api/merchants/${merchant.id}/balances`);
            const data = await res.json();
            setMerchantBalances(data.balances || []);
            setMerchantFeePercent(data.feePercent || 1);
        } catch (e) {
            setMerchantBalances([]);
        }
    };

    const handleUpdateMerchant = async (e: React.FormEvent) => {
        e.preventDefault();
        setIsUpdating(true);
        try {
            const response = await fetch(`/api/merchants/${selectedMerchant.id}`, {
                method: 'PATCH',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    name: editForm.name,
                    webhook_url: editForm.webhook_url,
                    fee_percent: parseFloat(editForm.fee_percent),
                    payout_address: editForm.payout_address,
                    payout_addresses: editForm.payout_addresses
                })
            });
            if (!response.ok) throw new Error('Güncelleme başarısız.');

            await fetchMerchants();
            setShowEditModal(false);
            setSelectedMerchant(null);
        } catch (err: any) {
            alert(err.message);
        } finally {
            setIsUpdating(false);
        }
    };

    const handleDeleteMerchant = async (id: string) => {
        if (!confirm('Bu firmayı silmek istediğinize emin misiniz? Bu işlem geri alınamaz.')) return;

        try {
            const response = await fetch(`/api/merchants/${id}`, {
                method: 'DELETE'
            });
            if (!response.ok) throw new Error('Silme işlemi başarısız.');
            await fetchMerchants();
        } catch (err: any) {
            alert(err.message);
        }
    };

    const handleProcessPayout = async (e: React.FormEvent) => {
        e.preventDefault();
        if (!selectedMerchant || parseFloat(payoutAmount) <= 0) return;

        setIsSubmitting(true);
        try {
            const response = await fetch('/api/admin/payouts', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({
                    merchantId: selectedMerchant.id,
                    amount: parseFloat(payoutAmount),
                    network: payoutNetwork,
                    currency: payoutCurrency
                })
            });

            const data = await response.json();
            if (!response.ok) throw new Error(data.error || 'Ödeme işlemi başarısız.');

            alert('Ödeme başarıyla gönderildi! TX Hash: ' + data.txHash);
            await fetchMerchants();
            setShowPayoutModal(false);
            setSelectedMerchant(null);
            setPayoutAmount('');
        } catch (err: any) {
            alert(err.message);
        } finally {
            setIsSubmitting(false);
        }
    };

    return (
        <div className="space-y-8 animate-in fade-in slide-in-from-bottom-4 duration-700">
            {/* Header */}
            <div className="flex flex-col md:flex-row md:items-center justify-between gap-6 bg-white p-8 rounded-[32px] border border-gray-100 shadow-sm">
                <div className="flex items-center gap-4">
                    <div className="w-12 h-12 bg-blue-50 rounded-2xl flex items-center justify-center text-blue-600">
                        <Building2 size={24} />
                    </div>
                    <div>
                        <h2 className="text-xl font-black text-gray-900">Firmalar (Merchants)</h2>
                        <p className="text-xs text-gray-400 font-bold uppercase tracking-widest mt-0.5">Ödeme alan tüm işletmeler</p>
                    </div>
                </div>

                <Link
                    href="/admin/merchants/new"
                    className="flex items-center justify-center gap-2 px-6 py-3 bg-[#2563EB] text-white rounded-2xl text-sm font-bold hover:bg-blue-700 transition shadow-lg shadow-blue-100"
                >
                    <Plus size={18} />
                    Yeni Firma Ekle
                </Link>
            </div>


            {/* Merchant Cards Grid */}
            <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-2 gap-6">
                {isLoading ? (
                    <div className="col-span-full flex justify-center py-20">
                        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600"></div>
                    </div>
                ) : merchants.map((m) => {
                    const identifier = m.short_id || m.id;
                    const paymentLink = `https://p2cgateway.store/checkout?merchant_id=${identifier}&amount=0`;

                    return (
                        <div key={m.id} className="bg-white rounded-[40px] border border-gray-100 p-8 shadow-sm hover:shadow-md transition-shadow group">
                            <div className="flex justify-between items-start mb-6">
                                <div className="flex items-center gap-4">
                                    <div className="w-14 h-14 bg-gray-50 rounded-2xl flex items-center justify-center text-gray-400 font-black text-xl group-hover:bg-blue-50 group-hover:text-blue-600 transition-colors">
                                        {m.name.substring(0, 1).toUpperCase()}
                                    </div>
                                    <div>
                                        <h3 className="text-lg font-black text-gray-900">{m.name}</h3>
                                        <div className="flex items-center gap-3">
                                            <span className="text-[10px] text-blue-600 font-black uppercase tracking-widest">ID: {identifier}</span>
                                            <div className="flex items-center gap-1.5 px-2 py-0.5 bg-emerald-50 text-emerald-600 text-[9px] font-black rounded-lg border border-emerald-100 uppercase tracking-tight">
                                                Fee: %{m.fee_percent || '1.0'}
                                            </div>
                                        </div>
                                    </div>
                                </div>
                                <div className="flex items-center gap-1">
                                    <button
                                        onClick={() => handleEditClick(m)}
                                        className="p-2 text-gray-300 hover:text-blue-600 hover:bg-blue-50 rounded-xl transition-all"
                                        title="Düzenle"
                                    >
                                        <Pencil size={18} />
                                    </button>
                                    <button
                                        onClick={() => handleDeleteMerchant(m.id)}
                                        className="p-2 text-gray-300 hover:text-red-600 hover:bg-red-50 rounded-xl transition-all"
                                        title="Sil"
                                    >
                                        <Trash2 size={18} />
                                    </button>
                                </div>
                            </div>

                            {/* Balance Section */}
                            <div className="mb-6 p-4 bg-emerald-50/50 rounded-2xl border border-emerald-100 space-y-4">
                                <div className="flex items-center justify-between">
                                    <div>
                                        <p className="text-[10px] font-black text-emerald-600 uppercase tracking-widest pl-1">İçerideki Bakiye</p>
                                        <p className="text-xl font-black text-emerald-700">
                                            {new Intl.NumberFormat('tr-TR', { style: 'currency', currency: 'TRY' }).format(Number(m.available_balance || 0))}
                                        </p>
                                    </div>
                                    <div className="text-right">
                                        <p className="text-[10px] font-black text-gray-400 uppercase tracking-widest">Toplam Ödenen</p>
                                        <p className="text-xs font-bold text-gray-600">
                                            {new Intl.NumberFormat('tr-TR', { style: 'currency', currency: 'TRY' }).format(Number(m.withdrawn_balance || 0))}
                                        </p>
                                    </div>
                                </div>

                                {m.balance_breakdown && m.balance_breakdown.length > 0 && (
                                    <div className="flex flex-wrap gap-2 pt-2 border-t border-emerald-100/50">
                                        {m.balance_breakdown.map((b: any, i: number) => (
                                            <div key={i} className="px-2 py-1 bg-white/60 rounded-lg border border-emerald-100/50 flex items-center gap-1.5 shadow-sm">
                                                <div className={`w-1.5 h-1.5 rounded-full ${b.network === 'SOLANA' ? 'bg-emerald-400' : b.network === 'POLYGON' ? 'bg-purple-400' : b.network === 'TRON' ? 'bg-red-400' : 'bg-orange-400'}`}></div>
                                                <span className="text-[9px] font-black text-emerald-800 uppercase tabular-nums">
                                                    {Number(b.amount).toFixed(4)} {b.token}
                                                </span>
                                            </div>
                                        ))}
                                    </div>
                                )}

                                <button
                                    onClick={() => handlePayoutClick(m)}
                                    disabled={parseFloat(m.available_balance || '0') <= 0}
                                    className="w-full flex items-center justify-center gap-2 py-3 bg-emerald-600 text-white rounded-xl text-[10px] font-black uppercase tracking-widest hover:bg-emerald-700 disabled:opacity-50 disabled:grayscale transition-all shadow-lg shadow-emerald-100"
                                >
                                    <Wallet size={14} /> Ödeme Gönder (Withdraw)
                                </button>
                            </div>

                            <div className="space-y-4">
                                {/* API Key Section */}
                                <div className="p-4 bg-gray-50 rounded-2xl space-y-2 border border-transparent hover:border-gray-100 transition-colors">
                                    <label className="text-[10px] font-black text-gray-400 uppercase tracking-widest pl-1">API Anahtarı (Secret Key)</label>
                                    <div className="flex items-center justify-between gap-3">
                                        <div className="flex-1 bg-white px-4 py-2 rounded-xl text-[11px] font-mono text-gray-400 truncate border border-gray-100/50">
                                            {m.api_key || '••••••••••••••••'}
                                        </div>
                                        <button
                                            onClick={() => copyToClipboard(m.api_key || '', m.id + '-key')}
                                            className="p-2 text-gray-400 hover:text-blue-600 transition-colors"
                                        >
                                            {copiedId === m.id + '-key' ? <Check size={14} /> : <Copy size={14} />}
                                        </button>
                                    </div>
                                </div>

                                {/* Webhook Section */}
                                <div className="p-4 bg-gray-50 rounded-2xl space-y-2 border border-transparent hover:border-gray-100 transition-colors">
                                    <label className="text-[10px] font-black text-gray-400 uppercase tracking-widest pl-1">Webhook URL</label>
                                    <div className="flex items-center gap-2">
                                        <span className="text-xs font-bold text-gray-600 truncate px-1">{m.webhook_url || 'Ayarlanmamış'}</span>
                                        <Globe size={14} className="text-gray-300 shrink-0" />
                                    </div>
                                </div>

                                {/* Payment Link Section */}
                                <div className="p-4 bg-blue-50/30 rounded-2xl border border-blue-50 space-y-2">
                                    <label className="text-[10px] font-black text-blue-600 uppercase tracking-widest pl-1">Ödeme Linki</label>
                                    <div className="flex items-center gap-2">
                                        <div className="flex-1 bg-white px-4 py-3 rounded-xl border border-blue-100/50 flex items-center justify-between group/link hover:border-blue-200 transition-colors">
                                            <a 
                                                href={paymentLink} 
                                                target="_blank" 
                                                rel="noreferrer"
                                                className="text-[11px] font-mono truncate text-gray-500 hover:text-blue-600 transition-colors flex-1 flex items-center gap-1.5"
                                                title="Linki Aç"
                                            >
                                                https://p2cgateway.store/checkout?merchant_id=<span className="text-blue-600 font-bold">{identifier}</span>&amount=<span className="text-emerald-500 font-bold">0</span>
                                                <ExternalLink size={10} className="opacity-0 group-hover/link:opacity-100 transition-opacity" />
                                            </a>
                                        </div>
                                        <button
                                            onClick={() => copyToClipboard(paymentLink, m.id)}
                                            className="p-3 bg-white text-blue-600 rounded-xl border border-blue-100 hover:bg-blue-600 hover:text-white transition shadow-sm shrink-0"
                                            title="Kopyala"
                                        >
                                            {copiedId === m.id ? <Check size={16} /> : <Copy size={16} />}
                                        </button>
                                    </div>
                                    <p className="text-[9px] text-gray-400 font-medium px-1">Yukarıdaki linki müşterinize ileterek manuel ödeme alabilir veya sitenize gömebilirsiniz.</p>
                                </div>
                            </div>

                            <div className="mt-8 pt-6 border-t border-gray-50 flex items-center justify-between">
                                <div className="flex items-center gap-2">
                                    <div className="w-2 h-2 rounded-full bg-emerald-500 animate-pulse"></div>
                                    <span className="text-[10px] font-black text-gray-400 uppercase tracking-widest">Aktif</span>
                                </div>
                                <a
                                    href={`/admin/transactions?merchant_id=${m.id}`}
                                    className="flex items-center gap-2 text-xs font-black text-[#2563EB] hover:underline"
                                >
                                    Tüm İşlemleri Gör
                                    <ExternalLink size={12} />
                                </a>
                                <Link
                                    href={`/merchant/${identifier}`}
                                    className="flex items-center gap-2 text-xs font-black text-emerald-600 hover:underline"
                                >
                                    Firma Paneli
                                    <ExternalLink size={12} />
                                </Link>
                            </div>
                        </div>
                    );
                })}

                {!isLoading && merchants.length === 0 && (
                    <div className="col-span-full p-20 bg-white rounded-[40px] border border-gray-100 text-center space-y-6">
                        <div className="w-20 h-20 bg-gray-50 rounded-3xl flex items-center justify-center mx-auto text-gray-200">
                            <Building2 size={40} />
                        </div>
                        <div className="max-w-xs mx-auto">
                            <p className="text-lg font-black text-gray-900">Henüz firma bulunmuyor</p>
                            <p className="text-gray-400 text-sm mt-1 font-bold">İlk firmanızı ekleyerek ödeme almaya başlayın.</p>
                        </div>
                        <Link
                            href="/admin/merchants/new"
                            className="inline-flex items-center gap-2 px-8 py-4 bg-gray-900 text-white rounded-2xl text-sm font-black hover:bg-gray-800 transition shadow-xl shadow-gray-200"
                        >
                            <Plus size={20} />
                            Firma Ekleyerek Başlayın
                        </Link>
                    </div>
                )}
            </div>

            {/* Edit Modal */}
            {showEditModal && (
                <div className="fixed inset-0 z-50 flex items-center justify-center p-6 bg-gray-900/60 backdrop-blur-sm animate-in fade-in duration-300">
                    <div className="bg-white w-full max-w-lg rounded-[40px] shadow-2xl overflow-hidden animate-in zoom-in-95 duration-300">
                        <div className="p-10">
                            <div className="flex justify-between items-center mb-10">
                                <div>
                                    <h2 className="text-2xl font-black text-gray-900">Firmayı Düzenle</h2>
                                    <p className="text-xs text-gray-400 font-bold uppercase tracking-widest mt-2 px-1">Firma bilgilerini güncelle</p>
                                </div>
                                <button
                                    onClick={() => setShowEditModal(false)}
                                    className="p-3 hover:bg-gray-50 rounded-2xl text-gray-400 transition"
                                >
                                    <X size={24} />
                                </button>
                            </div>

                            <form onSubmit={handleUpdateMerchant} className="space-y-8">
                                <div className="space-y-6">
                                    <div className="space-y-3">
                                        <label className="text-[10px] font-black text-gray-400 uppercase tracking-[0.2em] ml-1">Firma Adı</label>
                                        <div className="relative">
                                            <Building2 className="absolute left-5 top-1/2 -translate-y-1/2 text-gray-300" size={20} />
                                            <input
                                                type="text"
                                                required
                                                value={editForm.name}
                                                onChange={(e) => setEditForm({ ...editForm, name: e.target.value })}
                                                placeholder="Örn: Ayris Teknoloji"
                                                className="w-full pl-14 pr-6 py-4 bg-gray-50 border-2 border-transparent focus:border-blue-500 focus:bg-white rounded-[24px] outline-none transition-all font-bold text-gray-900 placeholder:text-gray-300"
                                            />
                                        </div>
                                    </div>

                                    <div className="space-y-3">
                                        <label className="text-[10px] font-black text-gray-400 uppercase tracking-[0.2em] ml-1">Özel Komisyon (%)</label>
                                        <div className="relative">
                                            <div className="absolute right-5 top-1/2 -translate-y-1/2 text-gray-300 font-black text-sm">%</div>
                                            <input
                                                type="number"
                                                step="0.1"
                                                min="0"
                                                max="100"
                                                value={editForm.fee_percent}
                                                onChange={(e) => setEditForm({ ...editForm, fee_percent: e.target.value })}
                                                placeholder="1.0"
                                                className="w-full pl-6 pr-12 py-4 bg-gray-50 border-2 border-transparent focus:border-blue-500 focus:bg-white rounded-[24px] outline-none transition-all font-bold text-gray-900 placeholder:text-gray-300"
                                            />
                                        </div>
                                        <p className="text-[10px] text-gray-400 font-medium px-1">Kesinti oranı. Boş bırakılırsa sistem varsayılanı kullanılır.</p>
                                    </div>

                                    <div className="space-y-3">
                                        <label className="text-[10px] font-black text-gray-400 uppercase tracking-[0.2em] ml-1">Webhook URL</label>
                                        <div className="relative">
                                            <Globe className="absolute left-5 top-1/2 -translate-y-1/2 text-gray-300" size={20} />
                                            <input
                                                type="url"
                                                value={editForm.webhook_url}
                                                onChange={(e) => setEditForm({ ...editForm, webhook_url: e.target.value })}
                                                placeholder="https://siteniz.com/webhook"
                                                className="w-full pl-14 pr-6 py-4 bg-gray-50 border-2 border-transparent focus:border-blue-500 focus:bg-white rounded-[24px] outline-none transition-all font-bold text-gray-900 placeholder:text-gray-300"
                                            />
                                        </div>
                                    </div>

                                    <div className="space-y-3">
                                        <label className="text-[10px] font-black text-gray-400 uppercase tracking-[0.2em] ml-1">Ödeme Adresleri (Ağ Bazlı)</label>
                                        <p className="text-[9px] text-gray-400 italic px-1 -mt-1">Her ağ için payout yapılacak cüzdan adresini girin.</p>

                                        {[
                                            { key: 'EVM', label: 'EVM (Polygon/BSC/ETH)', placeholder: '0x...', icon: '🟣' },
                                            { key: 'SOLANA', label: 'Solana', placeholder: '5pLH...veya base58 adres', icon: '🟢' },
                                            { key: 'TRON', label: 'TRON', placeholder: 'T...', icon: '🔴' },
                                            { key: 'BITCOIN', label: 'Bitcoin', placeholder: 'bc1q...', icon: '🟠' }
                                        ].map(net => (
                                            <div key={net.key} className="relative">
                                                <span className="absolute left-4 top-1/2 -translate-y-1/2 text-base">{net.icon}</span>
                                                <input
                                                    type="text"
                                                    value={editForm.payout_addresses?.[net.key] || ''}
                                                    onChange={(e) => setEditForm({
                                                        ...editForm,
                                                        payout_addresses: { ...editForm.payout_addresses, [net.key]: e.target.value }
                                                    })}
                                                    className="w-full pl-12 pr-6 py-3 bg-gray-50 border-2 border-transparent focus:border-blue-500 focus:bg-white rounded-2xl outline-none transition-all font-mono text-xs text-gray-900 placeholder:text-gray-300"
                                                    placeholder={`${net.label}: ${net.placeholder}`}
                                                />
                                            </div>
                                        ))}
                                    </div>
                                </div>

                                <div className="flex gap-4 pt-4">
                                    <button
                                        type="button"
                                        onClick={() => setShowEditModal(false)}
                                        className="flex-1 py-4 text-gray-400 font-black text-sm uppercase tracking-widest hover:text-gray-600 transition"
                                    >
                                        İptal
                                    </button>
                                    <button
                                        type="submit"
                                        disabled={isUpdating}
                                        className="flex-[2] py-4 bg-blue-600 text-white rounded-2xl font-black text-sm uppercase tracking-widest hover:bg-blue-700 transition shadow-xl shadow-blue-100 disabled:opacity-50"
                                    >
                                        {isUpdating ? 'Güncelleniyor...' : 'Değişiklikleri Kaydet'}
                                    </button>
                                </div>
                            </form>
                        </div>
                    </div>
                </div>
            )}

            {/* Payout Modal */}
            {showPayoutModal && (
                <div className="fixed inset-0 bg-black/40 backdrop-blur-sm z-50 flex items-center justify-center p-4">
                    <div className="bg-white rounded-[40px] w-full max-w-lg max-h-[90vh] overflow-y-auto shadow-2xl animate-in zoom-in duration-300">
                        <div className="bg-emerald-600 p-8 text-white relative">
                            <button onClick={() => setShowPayoutModal(false)} className="absolute top-6 right-6 p-2 hover:bg-white/10 rounded-full transition">
                                <X size={24} />
                            </button>
                            <div className="flex items-center gap-4 mb-4">
                                <div className="w-16 min-w-[64px] h-16 bg-white/10 rounded-3xl flex items-center justify-center">
                                    <Wallet size={32} />
                                </div>
                                <div>
                                    <h3 className="text-2xl font-black">Ödeme Gönder</h3>
                                    <p className="text-xs text-white/60 font-bold uppercase tracking-widest">Treasury'den Merchant Cüzdanına Transfer</p>
                                </div>
                            </div>
                        </div>

                        <form onSubmit={handleProcessPayout} className="p-8 space-y-6">
                            {(() => {
                                const bal = merchantBalances.find(b => b.network === payoutNetwork && b.token === payoutCurrency);
                                const totalGross = bal ? bal.totalGross : 0;
                                const totalNet = bal ? bal.balance : 0;
                                const totalFee = totalGross - totalNet;
                                const withdrawn = bal ? bal.withdrawn : 0;
                                const available = totalNet - withdrawn;

                                return (
                                    <div className="bg-emerald-50 p-6 rounded-3xl border border-emerald-100 space-y-4">
                                        <div className="flex justify-between items-center">
                                            <p className="text-[10px] font-black text-emerald-600 uppercase tracking-widest">Alıcı Firma</p>
                                            <p className="text-sm font-bold text-emerald-700">{selectedMerchant?.name}</p>
                                        </div>

                                        <div className="grid grid-cols-2 gap-4 pt-2 border-t border-emerald-200/30">
                                            <div>
                                                <p className="text-[9px] font-black text-emerald-600/60 uppercase tracking-tight">Top. Brüt (Hazine)</p>
                                                <p className="text-xs font-black text-emerald-800 tabular-nums">{totalGross.toFixed(4)} {payoutCurrency}</p>
                                            </div>
                                            <div className="text-right">
                                                <p className="text-[9px] font-black text-emerald-600/60 uppercase tracking-tight">Platform Fee (%{merchantFeePercent})</p>
                                                <p className="text-xs font-black text-orange-600 tabular-nums">-{totalFee.toFixed(4)} {payoutCurrency}</p>
                                            </div>
                                        </div>

                                        <div className="pt-2 border-t border-emerald-200/50">
                                            <p className="text-[10px] font-black text-emerald-600 uppercase tracking-widest mb-1">Net Hak Ediş (Çekilebilir)</p>
                                            <div className="flex items-baseline gap-2">
                                                <p className="text-3xl font-black text-emerald-900 tabular-nums">{available.toFixed(6)}</p>
                                                <p className="text-sm font-black text-emerald-700">{payoutCurrency}</p>
                                            </div>
                                            {withdrawn > 0 && (
                                                <p className="text-[9px] text-emerald-600/60 font-bold mt-1">Daha önce {withdrawn.toFixed(4)} {payoutCurrency} çekildi.</p>
                                            )}
                                        </div>

                                        {merchantBalances.length > 0 && (
                                            <div className="flex flex-wrap gap-1.5 pt-2 border-t border-emerald-200/30">
                                                {merchantBalances.filter(b => b.available > 0).map((b, i) => (
                                                    <span key={i} className={`px-2 py-0.5 rounded-lg text-[8px] font-bold uppercase tabular-nums border cursor-pointer transition-all ${b.network === payoutNetwork && b.token === payoutCurrency ? 'bg-emerald-600 text-white border-emerald-600 shadow-md' : 'bg-white text-emerald-700 border-emerald-100 hover:border-emerald-300'}`}
                                                        onClick={() => { setPayoutNetwork(b.network); setPayoutCurrency(b.token); }}
                                                    >
                                                        {b.network}/{b.token}: {b.available.toFixed(4)}
                                                    </span>
                                                ))}
                                            </div>
                                        )}
                                    </div>
                                );
                            })()}

                            <div className="space-y-4">
                                {/* Simplified Selection Indicator */}
                                <div className="p-4 bg-gray-50 rounded-2xl border border-gray-100 mb-4">
                                    <p className="text-[10px] font-black text-gray-400 uppercase tracking-widest leading-none mb-2">Seçili Ödeme Hattı</p>
                                    <div className="flex items-center justify-between">
                                        <div className="flex items-center gap-3">
                                            <div className="w-10 h-10 bg-white rounded-xl flex items-center justify-center text-lg shadow-sm border border-gray-100">
                                                {payoutNetwork === 'SOLANA' ? '🟢' : payoutNetwork === 'TRON' ? '🔴' : payoutNetwork === 'BITCOIN' ? '🟠' : '🟣'}
                                            </div>
                                            <div>
                                                <p className="text-sm font-black text-gray-900">{payoutNetwork}</p>
                                                <p className="text-[10px] font-bold text-blue-600 uppercase tracking-tight">{payoutCurrency}</p>
                                            </div>
                                        </div>
                                        <span className="text-[9px] font-black text-gray-300 uppercase italic">Yukarıdaki chiplerden seçin</span>
                                    </div>
                                </div>

                                <div>
                                    <label className="block text-[10px] font-black text-gray-400 uppercase tracking-widest mb-2 pl-1">
                                        Gönderilecek {payoutCurrency} Miktarı
                                    </label>
                                    {(() => {
                                        const bal = merchantBalances.find(b => b.network === payoutNetwork && b.token === payoutCurrency);
                                        const maxAvailable = bal ? bal.available : 0;
                                        const isOverspend = parseFloat(payoutAmount || '0') > maxAvailable;
                                        return (
                                            <>
                                                <div className="relative">
                                                    <input
                                                        type="number"
                                                        step="0.00000001"
                                                        value={payoutAmount}
                                                        onChange={(e) => setPayoutAmount(e.target.value)}
                                                        className={`w-full pl-5 pr-24 py-4 bg-gray-50 border rounded-2xl focus:ring-2 focus:ring-emerald-500 transition outline-none font-black text-lg ${isOverspend ? 'border-red-400 bg-red-50' : 'border-gray-100'}`}
                                                        placeholder="0.00"
                                                        required
                                                    />
                                                    <div className="absolute right-3 top-1/2 -translate-y-1/2 flex items-center gap-2">
                                                        {maxAvailable > 0 && (
                                                            <button
                                                                type="button"
                                                                onClick={() => setPayoutAmount(maxAvailable.toString())}
                                                                className="px-2 py-1 bg-emerald-100 text-emerald-700 rounded-lg text-[9px] font-black uppercase hover:bg-emerald-200 transition"
                                                            >
                                                                MAX
                                                            </button>
                                                        )}
                                                        <span className="font-black text-gray-300 uppercase text-sm">{payoutCurrency}</span>
                                                    </div>
                                                </div>
                                                {isOverspend && (
                                                    <p className="text-[9px] text-red-500 font-black mt-1 px-1">⚠️ Girilen miktar firma bakiyesini ({maxAvailable.toFixed(6)} {payoutCurrency}) aşıyor!</p>
                                                )}
                                            </>
                                        );
                                    })()}
                                    <p className="text-[9px] text-gray-400 mt-1 italic px-1">Treasury cüzdanından düşülüp merchant adresine kripto olarak iletilecek.</p>
                                </div>

                                <div className="p-4 bg-blue-50 rounded-2xl border border-blue-100 flex gap-3">
                                    <ShieldCheck className="text-blue-600 shrink-0" size={20} />
                                    <p className="text-[10px] text-blue-700 font-bold leading-relaxed">
                                        Bu işlem kalıcıdır. Payout adresi ({payoutNetwork}):
                                        <span className="font-mono text-[10px] block mt-1 break-all">
                                            {(() => {
                                                const netKey = ['POLYGON', 'BSC', 'ETH'].includes(payoutNetwork) ? 'EVM' : payoutNetwork;
                                                const addr = selectedMerchant?.payout_addresses?.[netKey];
                                                return addr || <span className="text-red-500 font-black">ADRES EKSİK! Lütfen firma ayarlarından {netKey} adresini girin.</span>;
                                            })()}
                                        </span>
                                    </p>
                                </div>
                            </div>

                            <button
                                type="submit"
                                disabled={isSubmitting || (() => {
                                    const bal = merchantBalances.find(b => b.network === payoutNetwork && b.token === payoutCurrency);
                                    const maxAvailable = bal ? bal.available : 0;
                                    return parseFloat(payoutAmount || '0') > maxAvailable || parseFloat(payoutAmount || '0') <= 0;
                                })() || !(() => {
                                    const netKey = ['POLYGON', 'BSC', 'ETH'].includes(payoutNetwork) ? 'EVM' : payoutNetwork;
                                    return selectedMerchant?.payout_addresses?.[netKey];
                                })()}
                                className="w-full py-5 bg-gray-900 text-white rounded-2xl text-xs font-black uppercase tracking-[0.2em] hover:bg-black transition shadow-xl disabled:opacity-50 flex items-center justify-center gap-3"
                            >
                                {isSubmitting ? (
                                    <>
                                        <Loader2 className="animate-spin" size={18} />
                                        İşleniyor...
                                    </>
                                ) : (
                                    <>
                                        Ödemeyi Onayla & Gönder
                                        <ArrowRight size={18} />
                                    </>
                                )}
                            </button>
                        </form>
                    </div>
                </div>
            )}
        </div>
    );
}