{% extends 'dashboard/base.html' %}
{% load static %}
{% load humanize %}

{% block title %}Billing History - Peza API{% endblock %}
{% block breadcrumb %}Billing History{% endblock %}

{% block content %}
<main class="mx-auto px-4 py-5 ">

  <!-- Header -->
  <div class="mb-6 flex items-center justify-between">
    <div>
      <h1 class="text-xl font-bold text-gray-900">Billing History</h1>
      <p class="text-sm text-gray-600 mt-0.5">Subscriptions & payment records</p>
    </div>
    <button onclick="location.reload()" class="px-3 py-1.5 bg-white border border-gray-300 text-gray-700 text-sm font-medium rounded-md hover:bg-gray-50 flex items-center">
      <svg class="w-4 h-4 mr-1.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"/>
      </svg>
      Refresh
    </button>
  </div>

  <!-- Stats – smaller & tighter -->
  <div class="grid sm:grid-cols-3 gap-4 mt-6">
    <div class="bg-white rounded-lg border border-gray-200 p-4">
      <div class="text-xs text-gray-500">Successful</div>
      <div class="text-xl font-bold text-gray-900 mt-1">{{ successful_count|default:0 }}</div>
    </div>
    <div class="bg-white rounded-lg border border-gray-200 p-4">
      <div class="text-xs text-gray-500">Pending</div>
      <div class="text-xl font-bold text-gray-900 mt-1">{{ pending_count|default:0 }}</div>
    </div>
    <div class="bg-white rounded-lg border border-gray-200 p-4">
      <div class="text-xs text-gray-500">Total Spent</div>
      <div class="text-xl font-bold text-gray-900 mt-1">MWK {{ total_spent|default:0|floatformat:0|intcomma }}</div>
    </div>
  </div>

  <!-- Transaction History -->
  <div class="bg-white rounded-lg shadow-sm border border-gray-200 overflow-hidden mt-6">
    <div class="border-b border-gray-200 px-5 py-3">
      <div class="flex items-center justify-between">
        <h2 class="text-base font-semibold text-gray-900 flex items-center">
          <svg class="w-4 h-4 text-gray-500 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"/>
          </svg>
          Transactions
        </h2>
        {% if transactions %}
        <span class="text-xs text-gray-500">{{ page_obj.paginator.count }} item{{ page_obj.paginator.count|pluralize }}</span>
        {% endif %}
      </div>
    </div>

    {% if transactions %}
    <div class="overflow-x-auto">
      <table class="w-full text-sm">
        <thead class="bg-gray-50 border-b border-gray-200">
          <tr class="text-xs text-gray-500 uppercase tracking-wide">
            <th class="px-5 py-2.5 text-left font-medium">Date</th>
            <th class="px-5 py-2.5 text-left font-medium">ID</th>
            <th class="px-5 py-2.5 text-left font-medium">Plan</th>
            <th class="px-5 py-2.5 text-left font-medium">Amount</th>
            <th class="px-5 py-2.5 text-left font-medium">Provider</th>
            <th class="px-5 py-2.5 text-left font-medium">Status</th>
            <th class="px-5 py-2.5 text-left font-medium">Action</th>
          </tr>
        </thead>
        <tbody class="divide-y divide-gray-100">
          {% for tx in transactions %}
          <tr class="hover:bg-gray-50/70 transition-colors">
            <td class="px-5 py-3">
              <div class="font-medium text-gray-900">{{ tx.created_at|date:"M d, Y" }}</div>
              <div class="text-xs text-gray-500">{{ tx.created_at|time:"H:i" }}</div>
            </td>
            <td class="px-5 py-3 font-mono text-gray-700">{{ tx.charge_id|slice:":8" }}…{{ tx.charge_id|slice:"-4:" }}</td>
            <td class="px-5 py-3 font-medium text-gray-900">{{ tx.plan.name|default:"—" }}</td>
            <td class="px-5 py-3 font-semibold text-green-700">
              MWK {{ tx.amount|floatformat:0|intcomma }}
            </td>
            <td class="px-5 py-3">
              <div class="flex items-center gap-2">
                {% if 'airtel' in tx.operator_ref_id|lower or tx.operator_ref_id == '1' %}
                  <span class="text-red-600 font-medium">Airtel</span>
                {% elif 'tnm' in tx.operator_ref_id|lower or tx.operator_ref_id == '2' %}
                  <span class="text-blue-600 font-medium">TNM</span>
                {% else %}
                  <span class="text-gray-600">{{ tx.mobile|default:"—" }}</span>
                {% endif %}
              </div>
            </td>
            <td class="px-5 py-3">
              {% if tx.status == 'success' %}
                <span class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-green-100 text-green-800">Success</span>
              {% elif tx.status == 'pending' %}
                <span class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-yellow-100 text-yellow-800">Pending</span>
              {% elif tx.status == 'failed' %}
                <span class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-red-100 text-red-800">Failed</span>
              {% else %}
                <span class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium bg-gray-100 text-gray-700">{{ tx.get_status_display }}</span>
              {% endif %}
            </td>
            <td class="px-5 py-3">
              {% if tx.status == 'pending' %}
                <button onclick="checkStatus('{{ tx.charge_id }}')" id="btn-{{ tx.charge_id }}"
                  class="px-3 py-1 bg-blue-50 text-blue-700 text-xs font-medium rounded hover:bg-blue-100 transition">
                  Check
                </button>
              {% elif tx.status == 'success' %}
                <span class="text-xs text-green-600">✓ Done</span>
              {% endif %}
            </td>
          </tr>
          {% endfor %}
        </tbody>
      </table>
    </div>

    <div class="border-t border-gray-200 px-5 py-3 bg-gray-50 text-xs text-gray-600 flex flex-col sm:flex-row sm:justify-between sm:items-center gap-3">
      <div>Showing {{ page_obj.start_index }}-{{ page_obj.end_index }} of {{ page_obj.paginator.count }} transaction{{ page_obj.paginator.count|pluralize }}</div>
      <div class="flex items-center gap-3">
        {% if page_obj.has_other_pages %}
        <nav class="flex items-center gap-1 text-xs">
          {% if page_obj.has_previous %}
          <a href="?page={{ page_obj.previous_page_number }}" class="px-2 py-1 bg-white border border-gray-300 rounded hover:bg-gray-100">Prev</a>
          {% endif %}
          {% for num in page_obj.paginator.page_range %}
            {% if num == page_obj.number %}
            <span class="px-2 py-1 bg-blue-600 text-white rounded border border-blue-600">{{ num }}</span>
            {% elif num >= page_obj.number|add:'-2' and num <= page_obj.number|add:'2' %}
            <a href="?page={{ num }}" class="px-2 py-1 bg-white border border-gray-300 rounded hover:bg-gray-100">{{ num }}</a>
            {% endif %}
          {% endfor %}
          {% if page_obj.has_next %}
          <a href="?page={{ page_obj.next_page_number }}" class="px-2 py-1 bg-white border border-gray-300 rounded hover:bg-gray-100">Next</a>
          {% endif %}
        </nav>
        {% endif %}
        <a href="{% url 'subscribe' %}" class="text-blue-600 hover:text-blue-800 font-medium text-sm flex items-center">
          <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"/></svg>
          New Plan
        </a>
      </div>
    </div>

    {% else %}
    <!-- Empty state – more compact -->
    <div class="px-6 py-12 text-center">
      <svg class="w-12 h-12 mx-auto mb-3 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"/>
      </svg>
      <h3 class="text-base font-medium text-gray-900 mb-1">No transactions yet</h3>
      <p class="text-sm text-gray-600 mb-4">Subscribe to a plan to get started.</p>
      <a href="{% url 'subscribe' %}" class="inline-flex items-center px-4 py-2 bg-blue-600 text-white text-sm font-medium rounded-lg hover:bg-blue-700">
        Subscribe Now
      </a>
    </div>
    {% endif %}
  </div>

</main>

<script>
function checkStatus(chargeId) {
  const btn = document.getElementById('btn-' + chargeId);
  const originalHTML = btn.innerHTML;
  
  btn.disabled = true;
  btn.innerHTML = `
    <svg class="w-4 h-4 mr-1 animate-spin" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"/>
    </svg>
    Checking...
  `;
  
  fetch(`/payments/check/${chargeId}/`)
    .then(response => response.json())
    .then(data => {
      if (data.status === 'success') {
        // Show success and reload
        btn.innerHTML = `
          <svg class="w-4 h-4 mr-1 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"/>
          </svg>
          Success!
        `;
        setTimeout(() => location.reload(), 1500);
      } else if (data.status === 'pending') {
        // Still pending
        btn.innerHTML = `
          <svg class="w-4 h-4 mr-1 text-yellow-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"/>
          </svg>
          Still Pending
        `;
        setTimeout(() => {
          btn.disabled = false;
          btn.innerHTML = originalHTML;
        }, 2000);
      } else {
        // Failed or cancelled
        btn.innerHTML = `
          <svg class="w-4 h-4 mr-1 text-red-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
          </svg>
          ${data.status.charAt(0).toUpperCase() + data.status.slice(1)}
        `;
        setTimeout(() => location.reload(), 1500);
      }
    })
    .catch(error => {
      console.error('Error:', error);
      btn.innerHTML = `
        <svg class="w-4 h-4 mr-1 text-red-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
        </svg>
        Error
      `;
      setTimeout(() => {
        btn.disabled = false;
        btn.innerHTML = originalHTML;
      }, 2000);
    });
}

// Auto-check pending transactions on page load
document.addEventListener('DOMContentLoaded', function() {
  const pendingItems = document.querySelectorAll('.bg-yellow-100');
  
  if (pendingItems.length > 0) {
    // Show notification
    const notification = document.createElement('div');
    notification.className = 'notification fixed top-4 right-4 bg-blue-500 text-white px-4 py-2 rounded-lg shadow-lg flex items-center';
    notification.innerHTML = `
      <svg class="w-4 h-4 mr-2 animate-spin" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"/>
      </svg>
      Checking pending transactions...
    `;
    document.body.appendChild(notification);
    
    // Remove notification after 3 seconds
    setTimeout(() => {
      notification.remove();
    }, 3000);
    
    // Auto-check first pending transaction after a delay
    setTimeout(() => {
      const firstPendingBtn = document.querySelector('.bg-yellow-100 + td .bg-blue-50');
      if (firstPendingBtn) {
        firstPendingBtn.click();
      }
    }, 1000);
  }
});
</script>

{% endblock %}