<?php
/**
 * modules/rates/edit_rates.php
 */

$p = $GLOBALS['my_privs'] ?? ['can_edit' => 0];
if (in_array(1, $_SESSION['all_role_ids'] ?? [])) { $p['can_edit'] = 1; }

if ($p['can_edit'] == 0) {
    header("Location: index.php?s=" . encrypt_url('mod=rates&page=list_rates') . "&status=access_denied");
    exit;
}

$rate_id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
if ($rate_id == 0) {
    header("Location: index.php?s=" . encrypt_url('mod=rates&page=list_rates'));
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $category_id = (int)$_POST['category_id'];
    $type_id     = (int)$_POST['type_id'];
    $rate        = (float)$_POST['rate_per_ton'];
    $eff_from    = $db->escape($_POST['effective_from']);
    $eff_to      = !empty($_POST['effective_to']) ? "'" . $db->escape($_POST['effective_to']) . "'" : "NULL";
    $status      = $db->escape($_POST['status']);
    $updated_by  = (int)$_SESSION['user_id'];

    $sql = "UPDATE TBL_RATES 
            SET CATEGORY_ID = $category_id,
                TYPE_ID = $type_id,
                RATE_PER_TON = $rate,
                EFFECTIVE_FROM = '$eff_from',
                EFFECTIVE_TO = $eff_to,
                STATUS = '$status',
                UPDATED_BY = $updated_by,
                UPDATED_DATE = CURRENT_TIMESTAMP
            WHERE RATE_ID = $rate_id";
    
    if ($db->query($sql)) {
        header("Location: index.php?s=" . encrypt_url('mod=rates&page=list_rates') . "&status=updated");
        exit;
    }
}

$sql = "SELECT * FROM TBL_RATES WHERE RATE_ID = $rate_id";
$result = $db->query($sql);
$data = mysqli_fetch_assoc($result);

if (!$data) {
    header("Location: index.php?s=" . encrypt_url('mod=rates&page=list_rates'));
    exit;
}

$cat_sql = "SELECT CATEGORY_ID, CATEGORY_NAME FROM TBL_CATEGORIES WHERE STATUS = 'ACTIVE' ORDER BY CATEGORY_NAME ASC";
$cat_res = $db->query($cat_sql);

$type_sql = "SELECT TYPE_ID, TYPE_NAME FROM TBL_COAL_TYPES WHERE STATUS = 'ACTIVE' ORDER BY TYPE_NAME ASC";
$type_res = $db->query($type_sql);
?>

<div class="p-3">
    <section class="content-header px-0">
        <div class="container-fluid">
            <div class="row mb-2">
                <div class="col-sm-6">
                    <h1 class="font-weight-bold text-primary"><i class="fas fa-edit mr-2"></i>Correct Rate Typo</h1>
                </div>
                <div class="col-sm-6 text-right">
                    <a href="index.php?s=<?php echo encrypt_url('mod=rates&page=list_rates'); ?>" class="btn btn-default shadow-sm border">
                        <i class="fas fa-arrow-left mr-1"></i> Cancel Update
                    </a>
                </div>
            </div>
        </div>
    </section>

    <section class="content px-0">
        <div class="container-fluid">
            <form action="" method="POST">
                <div class="card card-outline card-primary shadow-sm" style="border-top: 4px solid #007bff;">
                    <div class="card-body">
                        <div class="row">
                            <div class="col-md-3 form-group">
                                <label class="text-secondary">Coal Category <span class="text-danger">*</span></label>
                                <select name="category_id" class="form-control" required>
                                    <?php while($c = mysqli_fetch_assoc($cat_res)): ?>
                                        <option value="<?php echo $c['CATEGORY_ID']; ?>" <?php echo ($data['CATEGORY_ID'] == $c['CATEGORY_ID']) ? 'selected' : ''; ?>>
                                            <?php echo htmlspecialchars($c['CATEGORY_NAME']); ?>
                                        </option>
                                    <?php endwhile; ?>
                                </select>
                            </div>

                            <div class="col-md-3 form-group">
                                <label class="text-secondary">Coal Type <span class="text-danger">*</span></label>
                                <select name="type_id" class="form-control" required>
                                    <?php while($t = mysqli_fetch_assoc($type_res)): ?>
                                        <option value="<?php echo $t['TYPE_ID']; ?>" <?php echo ($data['TYPE_ID'] == $t['TYPE_ID']) ? 'selected' : ''; ?>>
                                            <?php echo htmlspecialchars($t['TYPE_NAME']); ?>
                                        </option>
                                    <?php endwhile; ?>
                                </select>
                            </div>
                            
                            <div class="col-md-2 form-group">
                                <label class="text-secondary">Rate Per Ton (Rs) <span class="text-danger">*</span></label>
                                <input type="number" step="0.01" min="0" name="rate_per_ton" class="form-control font-weight-bold text-success" value="<?php echo $data['RATE_PER_TON']; ?>" required>
                            </div>

                            <div class="col-md-2 form-group">
                                <label class="text-secondary">Effective From <span class="text-danger">*</span></label>
                                <input type="date" name="effective_from" class="form-control" value="<?php echo $data['EFFECTIVE_FROM']; ?>" required>
                            </div>
                            
                            <div class="col-md-2 form-group">
                                <label class="text-secondary">Status</label>
                                <select name="status" class="form-control">
                                    <option value="ACTIVE" <?php echo ($data['STATUS'] == 'ACTIVE') ? 'selected' : ''; ?>>ACTIVE</option>
                                    <option value="HISTORICAL" <?php echo ($data['STATUS'] == 'HISTORICAL') ? 'selected' : ''; ?>>HISTORICAL</option>
                                    <option value="INACTIVE" <?php echo ($data['STATUS'] == 'INACTIVE') ? 'selected' : ''; ?>>INACTIVE</option>
                                </select>
                            </div>
                        </div>
                    </div>
                    <div class="card-footer bg-white text-right p-3">
                        <button type="submit" class="btn btn-primary px-5 font-weight-bold shadow-sm">
                            <i class="fas fa-sync mr-2"></i> UPDATE RATE
                        </button>
                    </div>
                </div>
            </form>
        </div>
    </section>
</div>