PackIt/admin/mappings.php

<?php
require_once __DIR__ . '/auth.php';
require_once __DIR__ . '/layout.php';
require_admin();

$pdo = get_pdo();

// Handle add/remove mapping
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $action = $_POST['action'] ?? '';
    $aid    = (int)($_POST['activityID'] ?? 0);
    $iid    = (int)($_POST['itemID']     ?? 0);

    if ($action === 'add' && $aid > 0 && $iid > 0) {
        $qty = max(1, (int)($_POST['quantity'] ?? 1));
        try {
            $pdo->prepare("INSERT IGNORE INTO activity_item_map (activityID,itemID,quantity) VALUES (?,?,?)")
                ->execute([$aid, $iid, $qty]);
            flash('success', 'Mapping added.');
        } catch (Exception $e) {
            flash('error', 'Could not add mapping.');
        }
    }
    if ($action === 'update' && $aid > 0 && $iid > 0) {
        $qty = max(1, (int)($_POST['quantity'] ?? 1));
        $pdo->prepare("UPDATE activity_item_map SET quantity=? WHERE activityID=? AND itemID=?")
            ->execute([$qty, $aid, $iid]);
        flash('success', 'Quantity updated.');
    }
    if ($action === 'remove' && $aid > 0 && $iid > 0) {
        $pdo->prepare("DELETE FROM activity_item_map WHERE activityID=? AND itemID=?")
            ->execute([$aid, $iid]);
        flash('success', 'Mapping removed.');
    }

    header('Location: mappings.php' . (isset($_GET['aid']) ? '?aid=' . (int)$_GET['aid'] : ''));
    exit;
}

// Load all activities and items for selects
$activities = $pdo->query("
    SELECT a.activityID, a.activityName, ag.groupName
    FROM activities a
    JOIN activity_groups ag ON ag.groupID = a.groupID
    ORDER BY ag.sortOrder, a.sortOrder, a.activityID
")->fetchAll();

$allItems = $pdo->query("
    SELECT i.itemID, i.itemName, ig.groupName
    FROM items i
    JOIN item_groups ig ON ig.groupID = i.groupID
    ORDER BY ig.sortOrder, i.sortOrder, i.itemID
")->fetchAll();

// Selected activity filter
$selectedAid = isset($_GET['aid']) ? (int)$_GET['aid'] : 0;
if (!$selectedAid && !empty($activities)) {
    $selectedAid = $activities[0]['activityID'];
}

// Get current mappings for selected activity
$mappedItemIds = [];
$mappedItems   = [];
if ($selectedAid) {
    $stmt = $pdo->prepare("
        SELECT i.itemID, i.itemName, ig.groupName, aim.quantity
        FROM activity_item_map aim
        JOIN items i          ON i.itemID   = aim.itemID
        JOIN item_groups ig   ON ig.groupID = i.groupID
        WHERE aim.activityID = ?
        ORDER BY ig.sortOrder, i.sortOrder
    ");
    $stmt->execute([$selectedAid]);
    $mappedItems   = $stmt->fetchAll();
    $mappedItemIds = array_column($mappedItems, 'itemID');
}

admin_head('Mappings', 'mappings.php');
show_alerts();
?>
<h1>Activity ↔ Item Mappings</h1>

<div style="display:flex;gap:1.5rem;flex-wrap:wrap;align-items:flex-start;">

  <!-- Activity selector -->
  <div class="card" style="min-width:220px;flex:0 0 220px;">
    <h2>Select Activity</h2>
    <?php foreach ($activities as $a): ?>
    <a href="?aid=<?= $a['activityID'] ?>"
       style="display:block;padding:.45rem .6rem;border-radius:6px;margin-bottom:.25rem;font-size:.85rem;text-decoration:none;
              background:<?= $selectedAid==$a['activityID'] ? 'rgba(232,197,71,.1)' : 'transparent' ?>;
              color:<?= $selectedAid==$a['activityID'] ? 'var(--accent)' : 'var(--muted)' ?>;
              border:1px solid <?= $selectedAid==$a['activityID'] ? 'rgba(232,197,71,.3)' : 'transparent' ?>;">
      <?= htmlspecialchars($a['activityName']) ?>
      <span style="float:right;font-size:.72rem;color:var(--muted)"><?= htmlspecialchars($a['groupName']) ?></span>
    </a>
    <?php endforeach; ?>
  </div>

  <!-- Mapping manager -->
  <div style="flex:1;min-width:300px;">
    <?php if ($selectedAid):
      // Get the activity name
      $actName = '';
      foreach ($activities as $a) { if ($a['activityID'] == $selectedAid) $actName = $a['activityName']; }
    ?>
    <div class="card">
      <h2 style="margin-bottom:1rem">Items for: <span style="color:var(--accent)"><?= htmlspecialchars($actName) ?></span></h2>

      <!-- Add new mapping -->
      <form method="POST" style="display:flex;gap:.5rem;align-items:flex-end;margin-bottom:1.25rem;flex-wrap:wrap;">
        <input type="hidden" name="action" value="add">
        <input type="hidden" name="activityID" value="<?= $selectedAid ?>">
        <div style="flex:1;min-width:200px;">
          <label>Add Item</label>
          <select name="itemID" required style="margin-bottom:0;">
            <option value="">– choose item –</option>
            <?php
            // Group items in optgroups
            $optGroups = [];
            foreach ($allItems as $it) {
                if (in_array($it['itemID'], $mappedItemIds)) continue; // already mapped
                $optGroups[$it['groupName']][] = $it;
            }
            foreach ($optGroups as $grpName => $grpItems):
            ?>
            <optgroup label="<?= htmlspecialchars($grpName) ?>">
              <?php foreach ($grpItems as $it): ?>
              <option value="<?= $it['itemID'] ?>"><?= htmlspecialchars($it['itemName']) ?></option>
              <?php endforeach; ?>
            </optgroup>
            <?php endforeach; ?>
          </select>
        </div>
        <div style="width:90px;">
          <label>Qty</label>
          <input type="number" name="quantity" value="1" min="1" style="margin-bottom:0;width:100%;">
        </div>
        <button type="submit" class="btn btn-primary">➕ Add</button>
      </form>

      <!-- Current mapped items -->
      <?php if (empty($mappedItems)): ?>
      <p style="color:var(--muted);font-size:.85rem">No items mapped yet.</p>
      <?php else: ?>
      <table class="tbl">
        <thead><tr><th>#</th><th>Item</th><th>Group</th><th>Qty</th><th></th></tr></thead>
        <tbody>
        <?php foreach ($mappedItems as $it): ?>
        <tr>
          <td style="color:var(--muted)"><?= $it['itemID'] ?></td>
          <td><?= htmlspecialchars($it['itemName']) ?></td>
          <td><span class="badge badge-group"><?= htmlspecialchars($it['groupName']) ?></span></td>
          <td>
            <form method="POST" style="display:flex;gap:.3rem;align-items:center;">
              <input type="hidden" name="action"     value="update">
              <input type="hidden" name="activityID" value="<?= $selectedAid ?>">
              <input type="hidden" name="itemID"     value="<?= $it['itemID'] ?>">
              <input type="number" name="quantity" value="<?= (int)$it['quantity'] ?>" min="1" style="margin:0;width:70px;">
              <button class="btn btn-sm btn-primary">💾</button>
            </form>
          </td>
          <td style="text-align:right">
            <form method="POST" onsubmit="return confirm('Remove this mapping?')">
              <input type="hidden" name="action"     value="remove">
              <input type="hidden" name="activityID" value="<?= $selectedAid ?>">
              <input type="hidden" name="itemID"     value="<?= $it['itemID'] ?>">
              <button class="btn btn-sm btn-danger">Remove</button>
            </form>
          </td>
        </tr>
        <?php endforeach; ?>
        </tbody>
      </table>
      <?php endif; ?>
    </div>
    <?php endif; ?>
  </div>

</div>
<?php admin_foot(); ?>