编辑 tech_usage_edit.php - 文件管理器

✏️ 编辑：tech_usage_edit.php

路径：/home/boguraj1/public_html/isp/tech_usage_edit.php

大小：11.1 KB · 修改：2026-06-15 23:30:56 · 权限：0644 · 可写

<?php
session_start();
require_once 'includes/auth.php';
requireTechnician();
require_once 'config/db.php';

date_default_timezone_set('Asia/Dhaka');

$user_id = (int) $_SESSION['user_id'];
$entry_id = (int) ($_GET['id'] ?? $_POST['entry_id'] ?? 0);

$error   = '';
$success = '';

// Load the entry — must belong to this technician and be a 'deducted' type
$entry_stmt = $pdo->prepare("
    SELECT st.id, st.product_id, st.quantity, st.notes, st.created_at,
           p.name AS product_name, p.unit, p.current_stock
    FROM   stock_transactions st
    JOIN   products p ON p.id = st.product_id
    WHERE  st.id = ? AND st.user_id = ? AND st.type = 'deducted'
");
$entry_stmt->execute([$entry_id, $user_id]);
$entry = $entry_stmt->fetch();

if (!$entry) {
    // Either doesn't exist or doesn't belong to this tech
    header('Location: tech_dashboard.php');
    exit;
}

// Fetch all products for the dropdown (names + unit only — no stock)
$all_products = $pdo->query("SELECT id, name, unit FROM products ORDER BY name ASC")->fetchAll();

// Sticky form values (pre-fill from entry on first load)
$form = [
    'product_id' => $entry['product_id'],
    'quantity'   => $entry['quantity'],
    'notes'      => $entry['notes'],
];

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['entry_id'])) {
    $form['product_id'] = (int) ($_POST['product_id'] ?? 0);
    $form['quantity']   = trim($_POST['quantity'] ?? '');
    $form['notes']      = trim($_POST['notes'] ?? '');

$new_qty        = (int) $form['quantity'];
    $new_product_id = $form['product_id'];

if ($new_product_id <= 0) {
        $error = 'Please select a product.';
    } elseif ($new_qty <= 0) {
        $error = 'Quantity must be a positive number.';
    } else {
        // Fetch both old and new product with a lock to prevent race conditions
        $old_prod_stmt = $pdo->prepare("SELECT id, name, unit, current_stock FROM products WHERE id = ?");
        $old_prod_stmt->execute([$entry['product_id']]);
        $old_product = $old_prod_stmt->fetch();

$new_prod_stmt = $pdo->prepare("SELECT id, name, unit, current_stock FROM products WHERE id = ?");
        $new_prod_stmt->execute([$new_product_id]);
        $new_product = $new_prod_stmt->fetch();

if (!$new_product) {
            $error = 'Selected product not found.';
        } else {
            $same_product = ((int) $entry['product_id'] === $new_product_id);
            $old_qty      = (int) $entry['quantity'];

if ($same_product) {
                // Same product: calculate net stock change
                $stock_change = $new_qty - $old_qty; // positive = need to deduct more, negative = restore some

// Available stock = current + what we already took (can be reclaimed)
                $available = $new_product['current_stock'] + $old_qty;

if ($new_qty > $available) {
                    $error = 'Quantity exceeds available stock. Please contact your admin.';
                }
            } else {
                // Different product: restore old product's stock, deduct from new product
                $available_new = $new_product['current_stock'];
                if ($new_qty > $available_new) {
                    $error = 'Not enough stock for the newly selected product. Please contact your admin.';
                }
            }

if ($error === '') {
                // All validations passed — update inside a transaction
                $pdo->beginTransaction();
                try {
                    if ($same_product) {
                        if ($stock_change !== 0) {
                            // Adjust stock by the difference
                            $pdo->prepare("UPDATE products SET current_stock = current_stock - ? WHERE id = ?")
                                ->execute([$stock_change, $new_product_id]);
                        }
                    } else {
                        // Restore old product stock
                        $pdo->prepare("UPDATE products SET current_stock = current_stock + ? WHERE id = ?")
                            ->execute([$old_qty, $entry['product_id']]);
                        // Deduct from new product
                        $pdo->prepare("UPDATE products SET current_stock = current_stock - ? WHERE id = ?")
                            ->execute([$new_qty, $new_product_id]);
                    }

// Update the transaction record
                    $pdo->prepare(
                        "UPDATE stock_transactions
                         SET product_id = ?, quantity = ?, notes = ?, is_edited = 1, edited_at = NOW()
                         WHERE id = ? AND user_id = ?"
                    )->execute([$new_product_id, $new_qty, $form['notes'], $entry_id, $user_id]);

$pdo->commit();

$success = "Entry updated successfully.";

// Reload entry data to reflect changes
                    $entry_stmt->execute([$entry_id, $user_id]);
                    $entry = $entry_stmt->fetch();
                    $form  = [
                        'product_id' => $entry['product_id'],
                        'quantity'   => $entry['quantity'],
                        'notes'      => $entry['notes'],
                    ];

} catch (Exception $ex) {
                    $pdo->rollBack();
                    $error = 'Update failed. Please try again.';
                }
            }
        }
    }
}

include 'includes/header.php';
?>

<div class="row mb-3">
    <div class="col">
        <h4 class="page-title"><i class="bi bi-pencil-square me-2 text-primary"></i>Edit My Entry</h4>
        <nav aria-label="breadcrumb">
            <ol class="breadcrumb">
                <li class="breadcrumb-item"><a href="tech_dashboard.php">My Dashboard</a></li>
                <li class="breadcrumb-item active">Edit Entry</li>
            </ol>
        </nav>
    </div>
</div>

<div class="card mb-4 border-warning">
            <div class="card-body py-3 d-flex align-items-center gap-3">
                <i class="bi bi-info-circle text-warning fs-4"></i>
                <div>
                    <div class="small text-muted">Original entry submitted:</div>
                    <strong><?= htmlspecialchars($entry['product_name']) ?></strong>
                    — <?= $entry['quantity'] ?> <?= htmlspecialchars($entry['unit']) ?>(s)
                    on <?= date('d M Y', strtotime($entry['created_at'])) ?>
                    at <?= date('h:i A', strtotime($entry['created_at'])) ?>
                </div>
            </div>
        </div>

<div class="card">
            <div class="card-header bg-warning text-dark fw-semibold">
                <i class="bi bi-pencil me-1"></i> Correct This Entry
            </div>
            <div class="card-body">

<?php if ($success !== ''): ?>
                <div class="alert alert-success d-flex align-items-start gap-2">
                    <i class="bi bi-check-circle-fill mt-1"></i>
                    <div>
                        <?= htmlspecialchars($success) ?>
                        <div class="mt-2 d-flex gap-2 flex-wrap">
                            <a href="tech_dashboard.php" class="btn btn-sm btn-success">Back to Dashboard</a>
                            <a href="tech_usage.php"     class="btn btn-sm btn-outline-secondary">Submit New</a>
                        </div>
                    </div>
                </div>
                <?php endif; ?>

<?php if ($error !== ''): ?>
                <div class="alert alert-danger d-flex align-items-center gap-2">
                    <i class="bi bi-exclamation-triangle-fill"></i>
                    <?= htmlspecialchars($error) ?>
                </div>
                <?php endif; ?>

<div class="mb-3">
                        <label for="product_id" class="form-label fw-semibold">
                            Product <span class="text-danger">*</span>
                        </label>
                        <select class="form-select" id="product_id" name="product_id" required>
                            <option value="">-- Select Product --</option>
                            <?php foreach ($all_products as $p): ?>
                            <option value="<?= $p['id'] ?>"
                                    data-unit="<?= htmlspecialchars($p['unit']) ?>"
                                    <?= (int) $form['product_id'] === (int) $p['id'] ? 'selected' : '' ?>>
                                <?= htmlspecialchars($p['name']) ?>
                            </option>
                            <?php endforeach; ?>
                        </select>
                    </div>

<div class="mb-3">
                        <label for="quantity" class="form-label fw-semibold">
                            Correct Quantity <span class="text-danger">*</span>
                        </label>
                        <div class="input-group">
                            <input type="number"
                                   class="form-control"
                                   id="quantity"
                                   name="quantity"
                                   value="<?= (int) $form['quantity'] ?>"
                                   min="1"
                                   required>
                            <span class="input-group-text" id="unit-label">unit(s)</span>
                        </div>
                    </div>

<div class="mb-4">
                        <label for="notes" class="form-label fw-semibold">Notes / Reason</label>
                        <input type="text"
                               class="form-control"
                               id="notes"
                               name="notes"
                               value="<?= htmlspecialchars($form['notes']) ?>"
                               placeholder="e.g., House #5 Mirpur, Customer: Rahim">
                    </div>

<div class="d-grid gap-2">
                        <button type="submit" class="btn btn-warning fw-semibold text-dark py-2">
                            <i class="bi bi-check-circle me-1"></i> Save Changes
                        </button>
                        <a href="tech_dashboard.php" class="btn btn-outline-secondary">Cancel</a>
                    </div>
                </form>

</div>
        </div>

</div>
</div>

function updateUnit() {
        const opt = select.options[select.selectedIndex];
        unitLabel.textContent = opt.dataset.unit ? opt.dataset.unit + '(s)' : 'unit(s)';
    }

select.addEventListener('change', updateUnit);
    updateUnit();
}());
</script>

<?php include 'includes/footer.php'; ?>