/**
 * Admin All Payments Page
 * View and manage all payment transactions
 */

import { useState, useEffect } from 'react';
import { Search, Filter, Loader2, AlertCircle } from 'lucide-react';
import { Card } from '../../components/ui/card';
import Badge from '../../components/ui/badge/Badge';
import { getAdminPayments, type Payment } from '../../services/billing.api';

type AdminPayment = Payment & { account_name?: string };

export default function AdminAllPaymentsPage() {
  const [payments, setPayments] = useState<AdminPayment[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string>('');
  const [statusFilter, setStatusFilter] = useState('all');

  useEffect(() => {
    loadPayments();
  }, []);

  const loadPayments = async () => {
    try {
      setLoading(true);
      const data = await getAdminPayments();
      setPayments(data.results || []);
    } catch (err: any) {
      setError(err.message || 'Failed to load payments');
    } finally {
      setLoading(false);
    }
  };

  const filteredPayments = payments.filter((payment) => {
    return statusFilter === 'all' || payment.status === statusFilter;
  });

  const getStatusColor = (status: string) => {
    switch (status) {
      case 'succeeded':
      case 'completed':
        return 'success';
      case 'processing':
      case 'pending':
      case 'pending_approval':
        return 'warning';
      case 'refunded':
        return 'info';
      default:
        return 'error';
    }
  };

  if (loading) {
    return (
      <div className="flex items-center justify-center min-h-screen">
        <Loader2 className="w-8 h-8 animate-spin text-blue-600" />
      </div>
    );
  }

  return (
    <div className="p-6">
      <div className="mb-6">
        <h1 className="text-2xl font-bold text-gray-900 dark:text-white">All Payments</h1>
        <p className="text-gray-600 dark:text-gray-400 mt-1">
          View and manage all payment transactions
        </p>
      </div>

      {error && (
        <div className="mb-6 p-4 bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-lg flex items-center gap-3">
          <AlertCircle className="w-5 h-5 text-red-600" />
          <p className="text-red-800 dark:text-red-200">{error}</p>
        </div>
      )}

      <div className="mb-6 flex items-center gap-2">
        <Filter className="w-5 h-5 text-gray-400" />
        <select
          value={statusFilter}
          onChange={(e) => setStatusFilter(e.target.value)}
          className="px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg focus:ring-2 focus:ring-blue-500 dark:bg-gray-800"
        >
          <option value="all">All Status</option>
          <option value="pending_approval">Pending Approval</option>
          <option value="processing">Processing</option>
          <option value="succeeded">Succeeded</option>
          <option value="completed">Completed</option>
          <option value="pending">Pending</option>
          <option value="failed">Failed</option>
          <option value="cancelled">Cancelled</option>
          <option value="refunded">Refunded</option>
        </select>
      </div>

      <Card className="overflow-hidden">
        <div className="overflow-x-auto">
          <table className="w-full">
            <thead className="bg-gray-50 dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700">
              <tr>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Account</th>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Invoice</th>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Amount</th>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Method</th>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Status</th>
                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase">Date</th>
                <th className="px-6 py-3 text-right text-xs font-medium text-gray-500 uppercase">Actions</th>
              </tr>
            </thead>
            <tbody className="divide-y divide-gray-200 dark:divide-gray-700">
              {filteredPayments.length === 0 ? (
                <tr>
                  <td colSpan={6} className="px-6 py-8 text-center text-gray-500">No payments found</td>
                </tr>
              ) : (
                filteredPayments.map((payment) => (
                  <tr key={payment.id} className="hover:bg-gray-50 dark:hover:bg-gray-800">
                    <td className="px-6 py-4 font-medium">{payment.account_name}</td>
                    <td className="px-6 py-4 text-sm text-gray-700 dark:text-gray-300">
                      {payment.invoice_number || payment.invoice_id || '—'}
                    </td>
                    <td className="px-6 py-4 font-semibold">{payment.currency} {payment.amount}</td>
                    <td className="px-6 py-4 text-sm capitalize">{payment.payment_method.replace('_', ' ')}</td>
                    <td className="px-6 py-4">
                      <Badge 
                        variant="light" 
                        color={getStatusColor(payment.status)}
                      >
                        {payment.status}
                      </Badge>
                    </td>
                    <td className="px-6 py-4 text-sm text-gray-600">
                      {new Date(payment.created_at).toLocaleDateString()}
                    </td>
                    <td className="px-6 py-4 text-right">
                      <button className="text-blue-600 hover:text-blue-700 text-sm">View</button>
                    </td>
                  </tr>
                ))
              )}
            </tbody>
          </table>
        </div>
      </Card>
    </div>
  );
}