{% extends "base.html" %}
{% block title %}Shopping List — Menu Planner{% endblock %}

{% block content %}
<div class="d-flex align-items-center justify-content-between mb-4 no-print">
  <div>
    <h1 class="h3 fw-bold mb-0">Shopping List</h1>
    <p class="text-muted mb-0">
      Week of {{ week_start.strftime('%B %d, %Y') }}
      {% if total %}&nbsp;·&nbsp; {{ checked }}/{{ total }} checked{% endif %}
    </p>
  </div>
  <div class="d-flex gap-2 align-items-center">
    <a href="/shopping-list?week={{ prev_week }}" class="btn btn-outline-secondary btn-sm"><i class="bi bi-chevron-left"></i></a>
    <a href="/shopping-list" class="btn btn-outline-secondary btn-sm">This Week</a>
    <a href="/shopping-list?week={{ next_week }}" class="btn btn-outline-secondary btn-sm"><i class="bi bi-chevron-right"></i></a>
    <button onclick="window.print()" class="btn btn-outline-secondary btn-sm ms-2">
      <i class="bi bi-printer me-1"></i>Print
    </button>
    {% if current_user.is_authenticated %}
    <button id="regenerateBtn" class="btn btn-success btn-sm">
      <i class="bi bi-arrow-clockwise me-1"></i>Regenerate
    </button>
    {% if total %}
    <button id="clearBtn" class="btn btn-outline-danger btn-sm">
      <i class="bi bi-trash me-1"></i>Clear
    </button>
    {% endif %}
    {% endif %}{# end is_authenticated #}
  </div>
</div>

{% if categories %}

<!-- Progress bar -->
{% if total %}
<div class="mb-4 no-print">
  <div class="d-flex justify-content-between small text-muted mb-1">
    <span>{{ checked }} of {{ total }} items collected</span>
    <span>{{ (checked / total * 100)|int }}%</span>
  </div>
  <div class="progress" style="height:8px">
    <div class="progress-bar bg-success" style="width: {{ (checked / total * 100)|int }}%"></div>
  </div>
</div>
{% endif %}

<div class="row g-4">
  {% for cat_name, items in categories %}
  <div class="col-md-6 col-xl-4">
    <div class="card shadow-sm h-100">
      <div class="card-header fw-semibold d-flex align-items-center gap-2">
        {% if cat_name == 'Meat & Poultry' %}<i class="bi bi-egg-fried text-warning"></i>
        {% elif cat_name == 'Seafood' %}<i class="bi bi-water text-info"></i>
        {% elif cat_name == 'Dairy & Eggs' %}<i class="bi bi-cup-straw text-warning"></i>
        {% elif cat_name == 'Produce' %}<i class="bi bi-flower1 text-success"></i>
        {% elif cat_name == 'Pantry' %}<i class="bi bi-archive text-secondary"></i>
        {% elif cat_name == 'Spices & Herbs' %}<i class="bi bi-asterisk text-danger"></i>
        {% else %}<i class="bi bi-box text-muted"></i>{% endif %}
        {{ cat_name }}
        <span class="badge bg-secondary ms-auto">{{ items|length }}</span>
      </div>
      <ul class="list-group list-group-flush">
        {% for item in items %}
        <li class="list-group-item shopping-item {% if item.checked %}checked{% endif %}" data-id="{{ item.id }}">
          <div class="d-flex align-items-center gap-2">
            <input type="checkbox" class="form-check-input flex-shrink-0 shop-check" id="item{{ item.id }}"
                   {% if item.checked %}checked{% endif %}>
            <label for="item{{ item.id }}" class="mb-0 flex-grow-1 check-label">
              <span class="ing-qty fw-semibold me-1">
                {% if item.quantity == item.quantity|int %}{{ item.quantity|int }}{% else %}{{ item.quantity }}{% endif %}
                {{ item.unit }}
              </span>
              {{ item.ingredient_name }}
            </label>
            {% if item.recipe_sources %}
            <span class="text-muted small d-none d-sm-inline source-hint" title="{{ item.recipe_sources }}">
              <i class="bi bi-book"></i>
            </span>
            {% endif %}
          </div>
          {% if item.recipe_sources %}
          <div class="small text-muted mt-1 ps-4 source-text">{{ item.recipe_sources }}</div>
          {% endif %}
        </li>
        {% endfor %}
      </ul>
    </div>
  </div>
  {% endfor %}
</div>

{% else %}
<div class="text-center py-5">
  <i class="bi bi-cart-x fs-1 text-muted"></i>
  <p class="text-muted mt-3">No shopping list yet for this week.</p>
  <p class="text-muted small">Add meals to your <a href="/meal-plan">meal plan</a> first, then click Regenerate.</p>
  <button id="regenerateBtn2" class="btn btn-success mt-2">
    <i class="bi bi-arrow-clockwise me-1"></i>Generate from Meal Plan
  </button>
</div>
{% endif %}

<!-- Toast -->
<div class="position-fixed bottom-0 end-0 p-3 no-print" style="z-index:1100">
  <div id="toast" class="toast align-items-center text-bg-success border-0" role="alert">
    <div class="d-flex">
      <div class="toast-body" id="toastBody">Done!</div>
      <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast"></button>
    </div>
  </div>
</div>
{% endblock %}

{% block scripts %}
<script>
const weekStart = '{{ week_start.isoformat() }}';
const toast = new bootstrap.Toast(document.getElementById('toast'), {delay: 2000});

// Checkbox toggle
document.querySelectorAll('.shop-check').forEach(cb => {
  cb.addEventListener('change', async function() {
    const item = this.closest('.shopping-item');
    const res = await api(`/shopping-list/${item.dataset.id}/check`, {
      method: 'POST', body: JSON.stringify({checked: this.checked}),
    });
    if (res) {
      item.classList.toggle('checked', this.checked);
      updateProgress();
    }
  });
});

function updateProgress() {
  const all  = document.querySelectorAll('.shop-check').length;
  const done = document.querySelectorAll('.shop-check:checked').length;
  const bar  = document.querySelector('.progress-bar');
  if (bar) bar.style.width = all ? `${Math.round(done/all*100)}%` : '0%';
}

async function regenerate() {
  const res = await api('/shopping-list/generate', {
    method: 'POST', body: JSON.stringify({week: weekStart}),
  });
  if (!res) return;
  const data = await res.json();
  if (data.success) {
    location.reload();
  } else {
    document.getElementById('toastBody').textContent = data.error || 'No meals planned for this week.';
    document.getElementById('toast').className = 'toast align-items-center text-bg-danger border-0';
    toast.show();
  }
}

document.getElementById('regenerateBtn')?.addEventListener('click', regenerate);
document.getElementById('regenerateBtn2')?.addEventListener('click', regenerate);

document.getElementById('clearBtn')?.addEventListener('click', async () => {
  if (!confirm('Clear the shopping list for this week?')) return;
  const res = await api('/shopping-list/clear', {
    method: 'POST', body: JSON.stringify({week: weekStart}),
  });
  if (res) location.reload();
});
</script>
{% endblock %}