38438-vm/import_suppliers.php

<?php
require_once 'db/config.php';
$pageTitle = 'Import Suppliers';

$message = '';
$error = '';
$results = [];

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['csv_file'])) {
    $file = $_FILES['csv_file'];
    
    if ($file['error'] !== UPLOAD_ERR_OK) {
        $error = 'File upload failed.';
    } else {
        $handle = fopen($file['tmp_name'], 'r');
        $header = fgetcsv($handle);
        
        // Expected columns: name, type, contact_info
        $expected = ['name', 'type', 'contact_info'];
        
        if (!$header || count(array_intersect($expected, $header)) < 1) {
            $error = 'Invalid CSV format. Please use the provided template.';
        } else {
            $columnMap = array_flip($header);
            $rowCount = 0;
            $importCount = 0;
            $skippedCount = 0;
            
            db()->beginTransaction();
            try {
                $stmt = db()->prepare("INSERT INTO suppliers (tenant_id, name, type, contact_info) VALUES (?, ?, ?, ?)");
                
                while (($row = fgetcsv($handle)) !== false) {
                    $rowCount++;
                    $data = [];
                    foreach ($expected as $col) {
                        $data[$col] = isset($columnMap[$col]) && isset($row[$columnMap[$col]]) ? trim($row[$columnMap[$col]]) : '';
                    }
                    
                    if (empty($data['name'])) {
                        $skippedCount++;
                        $results[] = "Row $rowCount: Skipped (Missing Name)";
                        continue;
                    }

                    // Default type if invalid
                    if (!in_array($data['type'], ['supplier', 'contractor'])) {
                        $data['type'] = 'supplier';
                    }
                    
                    $stmt->execute([
                        1, // Hardcoded tenant_id
                        $data['name'],
                        $data['type'],
                        $data['contact_info']
                    ]);
                    $importCount++;
                }
                db()->commit();
                $message = "Import completed successfully. $importCount suppliers imported, $skippedCount skipped.";
            } catch (Exception $e) {
                db()->rollBack();
                $error = 'Database error: ' . $e->getMessage();
            }
        }
        fclose($handle);
    }
}

include 'includes/header.php';
?>

<div class="container mt-4">
    <div class="d-flex justify-content-between align-items-center mb-4">
        <h2><i class="bi bi-truck me-2"></i>Import Suppliers</h2>
        <a href="samples/suppliers_template.csv" class="btn btn-outline-primary btn-sm">
            <i class="bi bi-download me-1"></i>Download Template
        </a>
    </div>

    <?php if ($message): ?>
        <div class="alert alert-success alert-dismissible fade show" role="alert">
            <?= $message ?>
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    <?php endif; ?>

    <?php if ($error): ?>
        <div class="alert alert-danger alert-dismissible fade show" role="alert">
            <?= $error ?>
            <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        </div>
    <?php endif; ?>

    <div class="row">
        <div class="col-md-6">
            <div class="card shadow-sm border-0">
                <div class="card-body p-4">
                    <form action="import_suppliers.php" method="POST" enctype="multipart/form-data">
                        <div class="mb-4">
                            <label for="csv_file" class="form-label fw-bold">Select CSV File</label>
                            <input type="file" class="form-control" id="csv_file" name="csv_file" accept=".csv" required>
                            <div class="form-text mt-2">
                                Max file size: 2MB. Only .csv files are allowed.
                            </div>
                        </div>
                        <button type="submit" class="btn btn-primary w-100 py-2">
                            <i class="bi bi-upload me-2"></i>Upload and Import
                        </button>
                    </form>
                </div>
            </div>
        </div>
        <div class="col-md-6">
            <div class="card shadow-sm border-0 h-100">
                <div class="card-header bg-white py-3">
                    <h5 class="mb-0">Import Instructions</h5>
                </div>
                <div class="card-body">
                    <ol class="small text-muted">
                        <li>Download the CSV template using the button above.</li>
                        <li>Fill in your supplier data. The <strong>name</strong> field is required.</li>
                        <li>The <strong>type</strong> field should be either 'supplier' or 'contractor'.</li>
                        <li>Save the file as a CSV and upload it.</li>
                    </ol>
                    <div class="alert alert-info py-2 small mb-0">
                        <i class="bi bi-info-circle me-1"></i> Existing suppliers with the same name will be added as new entries.
                    </div>
                </div>
            </div>
        </div>
    </div>

    <?php if (!empty($results)): ?>
        <div class="card shadow-sm border-0 mt-4">
            <div class="card-header bg-white py-3">
                <h5 class="mb-0">Import Logs</h5>
            </div>
            <div class="card-body">
                <div class="list-group list-group-flush small">
                    <?php foreach ($results as $res): ?>
                        <div class="list-group-item px-0 border-0 py-1">
                            <i class="bi bi-dot me-1"></i><?= $res ?>
                        </div>
                    <?php endforeach; ?>
                </div>
            </div>
        </div>
    <?php endif; ?>
</div>

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