View Code - 20260723

month_end_stock_entry.php | 20260723_000646.php Initial Domain Snapshot

<?php
/* month_end_stock_entry.php
   Same as previous final file but with robust Save request handling:
   - posts to window.location.href
   - disables Save button while sending
   - shows server response in notice area
*/

error_reporting(E_ALL);
ini_set('display_errors',1);

require_once __DIR__ . '/modules/auth/page_acl.php';
$ctx = page_require_access('month_end_stock_entry');
$u = $ctx['user'] ?? null;
$company_id = (int)($ctx['company_id'] ?? 0);
$pdo = $ctx['pdo'] ?? null;

if (!$pdo) {
    require_once __DIR__ . '/core/db.php';
}
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

/* CSRF */
$csrf = $_SESSION['csrf_token'] ?? bin2hex(random_bytes(16));
$_SESSION['csrf_token'] = $csrf;

/* OPTIONS */
$OPTIONS = [
    'location' => ['MST1','MST2A','MST2B','MST2-TOP','ZARI MACHINE'],
    'machine_groups' => [
        'MST1' => ['Bobin Machine','Warping Machine','Palti Machine'],
        'MST2A' => ['Bobin Machine'],
        'MST2B' => ['Bobin Machine'],
        'MST2-TOP' => ['Warping Machine','Palti Machine','TFO'],
        'ZARI MACHINE' => ['Zari Machine']
    ],
    'machine_types' => [
        'Bobin Machine' => ['In Bobin','Open Box','Closed Box','In Machine'],
        'Warping Machine' => ['Beam Stock','Beam Quality','Yarn in Machine','Yarn in Closed Box','Yarn in Open Box'],
        'Palti Machine' => ['Total Zari Roll'],
        'TFO' => ['TFO Standard Section'],
        'Zari Machine' => []
    ]
];

/* Preload lookups */
$deniers = []; $colors = [];
try {
    $q = $pdo->prepare("SELECT value FROM denier_lookup WHERE company_id = :cid ORDER BY value");
    $q->execute([':cid'=>$company_id]);
    $deniers = array_column($q->fetchAll(PDO::FETCH_ASSOC), 'value');

$q2 = $pdo->prepare("SELECT value FROM color_lookup WHERE company_id = :cid ORDER BY value");
    $q2->execute([':cid'=>$company_id]);
    $colors = array_column($q2->fetchAll(PDO::FETCH_ASSOC), 'value');
} catch (Exception $e) {}

/* -------------------- beam fetch -------------------- */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && ($_POST['action'] ?? '') === 'fetch') {
    header('Content-Type: application/json; charset=utf-8');
    $bid = (int)($_POST['beam_quality_id'] ?? 0);
    $total_meter = (float)($_POST['total_meter'] ?? 0);

if (!$bid || !($total_meter > 0)) {
        echo json_encode(['success'=>false,'msg'=>'Missing beam_quality_id or total_meter']);
        exit;
    }

$sql = "SELECT y.id, y.seq_no, y.stock_type, y.yarn_type, y.denier, y.color, y.total_tar, y.tpm, y.wastage
            FROM beam_quality_yarns y
            JOIN beam_qualities q ON q.id = y.beam_quality_id
            WHERE y.beam_quality_id = :bid AND q.company_id = :cid
            ORDER BY y.seq_no ASC, y.id ASC";
    $st = $pdo->prepare($sql);
    $st->execute([':bid'=>$bid, ':cid'=>$company_id]);
    $rows = $st->fetchAll(PDO::FETCH_ASSOC);
    if (!$rows) {
        echo json_encode(['success'=>false,'msg'=>'No yarn rows found for selected quality.']);
        exit;
    }

// optional denier corrections
    $map = []; $map_short = [];
    try {
        $st2 = $pdo->prepare("SELECT stock_type, yarn_type, denier, new_denier FROM yarn_weight_data WHERE 1");
        $st2->execute();
        foreach ($st2->fetchAll(PDO::FETCH_ASSOC) as $r) {
            $key = strtolower(trim($r['stock_type'])) . '||' . strtolower(trim($r['yarn_type'])) . '||' . trim($r['denier']);
            $map[$key] = $r['new_denier'];
            $k2 = strtolower(trim($r['stock_type'])) . '||' . strtolower(trim($r['yarn_type']));
            if (!isset($map_short[$k2])) $map_short[$k2] = $r['new_denier'];
        }
    } catch (Exception $e) {}

$out = [];
    foreach ($rows as $r) {
        $k = strtolower(trim($r['stock_type'])) . '||' . strtolower(trim($r['yarn_type'])) . '||' . trim($r['denier']);
        $k2 = strtolower(trim($r['stock_type'])) . '||' . strtolower(trim($r['yarn_type']));
        $new_denier = $map[$k] ?? $map_short[$k2] ?? (float)$r['denier'];

$meters_for_yarn = $total_meter * (float)$r['total_tar'];
        $weight_kg = ($meters_for_yarn * (float)$new_denier) / 9000000.0;

$out[] = [
            'id' => (int)$r['id'],
            'seq_no' => (int)$r['seq_no'],
            'stock_type' => $r['stock_type'],
            'yarn_type' => $r['yarn_type'],
            'denier' => $r['denier'],
            'color' => $r['color'],
            'total_tar' => (string)$r['total_tar'],
            'tpm' => (string)$r['tpm'],
            'wastage' => (string)$r['wastage'],
            'new_denier' => (float)$new_denier,
            'meters' => round($meters_for_yarn, 3),
            'weight_kg' => round($weight_kg, 6),
        ];
    }

echo json_encode(['success'=>true,'data'=>$out], JSON_UNESCAPED_UNICODE);
    exit;
}

/* -------------------- cone lookup / add lookup / save (same logic as before) -------------------- */
/* cone_lookup */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && ($_POST['action'] ?? '') === 'cone_lookup') {
    header('Content-Type: application/json; charset=utf-8');
    $color = trim($_POST['color'] ?? '');
    $denier = trim($_POST['denier'] ?? '');
    if (!$color || !$denier) { echo json_encode(['success'=>false,'msg'=>'Missing color/denier']); exit; }
    try {
        $q = $pdo->prepare("SELECT cone_weight FROM cone_weight_matrix WHERE company_id = :cid AND LOWER(color)=LOWER(:color) AND LOWER(denier)=LOWER(:denier) LIMIT 1");
        $q->execute([':cid'=>$company_id, ':color'=>$color, ':denier'=>$denier]);
        $r = $q->fetch(PDO::FETCH_ASSOC);
        if ($r && $r['cone_weight']) { echo json_encode(['success'=>true,'cone_weight'=> (float)$r['cone_weight'] ]); exit; }
        $q2 = $pdo->prepare("SELECT cone_weight FROM cone_weight_matrix WHERE company_id = :cid AND LOWER(color)=LOWER(:color) LIMIT 1");
        $q2->execute([':cid'=>$company_id, ':color'=>$color]);
        $r2 = $q2->fetch(PDO::FETCH_ASSOC);
        if ($r2 && $r2['cone_weight']) { echo json_encode(['success'=>true,'cone_weight'=> (float)$r2['cone_weight'] ]); exit; }
    } catch (Exception $e) {}
    echo json_encode(['success'=>false,'msg'=>'No cone weight found']);
    exit;
}

/* add_lookup */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && ($_POST['action'] ?? '') === 'add_lookup') {
    header('Content-Type: application/json; charset=utf-8');
    $type = trim($_POST['type'] ?? '');
    $value = trim($_POST['value'] ?? '');
    if (!$type || !$value) { echo json_encode(['success'=>false,'msg'=>'Missing type/value']); exit; }
    try {
        if ($type === 'denier') {
            $ins = $pdo->prepare("INSERT INTO denier_lookup (company_id, value) VALUES (:cid, :val)");
            $ins->execute([':cid'=>$company_id, ':val'=>$value]);
        } elseif ($type === 'color') {
            $ins = $pdo->prepare("INSERT INTO color_lookup (company_id, value) VALUES (:cid, :val)");
            $ins->execute([':cid'=>$company_id, ':val'=>$value]);
        } else { echo json_encode(['success'=>false,'msg'=>'Unknown lookup type']); exit; }
        echo json_encode(['success'=>true,'msg'=>'Saved']); exit;
    } catch (Exception $e) {
        echo json_encode(['success'=>false,'msg'=>'DB insert failed']); exit;
    }
}

/* save: validate JSON and insert; on duplicate merge (unchanged) */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && ($_POST['action'] ?? '') === 'save') {

$token = $_POST['csrf_token'] ?? '';
    if (!$token || !hash_equals($_SESSION['csrf_token'] ?? '', $token)) {
        echo "<div style='color:red;padding:10px;'>CSRF token mismatch.</div>";
        exit;
    }

$month = trim($_POST['month'] ?? '');
    $stock_type = trim($_POST['stock_type_h'] ?? $_POST['stock_type'] ?? '');
    $remark = trim($_POST['remark_h'] ?? $_POST['remark'] ?? '');
    $raw_yarns_json = $_POST['yarns_json'] ?? '';

if (!$month || !$stock_type) {
        echo "<div style='color:orange;padding:10px;'>Please fill month and stock type.</div>";
        exit;
    }

if ($raw_yarns_json === '') {
        $final_json_string = json_encode([], JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
    } else {
        $dec = json_decode($raw_yarns_json, true);
        if ($dec === null && json_last_error() !== JSON_ERROR_NONE) {
            echo "<div style='color:orange;padding:10px;'>Invalid JSON in yarns_json: " . htmlspecialchars(json_last_error_msg()) . "</div>";
            exit;
        }
        $final_json_string = json_encode($dec, JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
    }

$payload = json_decode($final_json_string, true);
    $beam_quality_id = $payload['beam_quality_id'] ?? null;
    $total_meter = $payload['total_meter'] ?? null;

try {
        $ins = $pdo->prepare("
            INSERT INTO month_end_stock_report
            (company_id, month, stock_type, beam_quality_id, total_meter, yarns_json, remark, created_by)
            VALUES
            (:cid, :month, :stock_type, :bqid, :tm, :yj, :remark, :created_by)
        ");
        $ins->bindValue(':cid', $company_id, PDO::PARAM_INT);
        $ins->bindValue(':month', $month, PDO::PARAM_STR);
        $ins->bindValue(':stock_type', $stock_type, PDO::PARAM_STR);
        if ($beam_quality_id !== null && $beam_quality_id !== '') $ins->bindValue(':bqid', $beam_quality_id, PDO::PARAM_INT);
        else $ins->bindValue(':bqid', null, PDO::PARAM_NULL);
        $ins->bindValue(':tm', $total_meter !== null && $total_meter !== '' ? $total_meter : null);
        $ins->bindValue(':yj', $final_json_string, PDO::PARAM_STR);
        $ins->bindValue(':remark', $remark, PDO::PARAM_STR);
        $ins->bindValue(':created_by', $u['id'] ?? null, PDO::PARAM_INT);
        $ins->execute();

echo "<div style='color:green;padding:10px;'>Entry saved successfully (new row inserted).</div>";
        exit;

} catch (PDOException $ex) {
        $msg = $ex->getMessage();
        $sqlState = $ex->getCode();
        if (strpos($msg, 'Duplicate') !== false || $sqlState === '23000') {
            try {
                if ($beam_quality_id) {
                    $find = $pdo->prepare("SELECT id, yarns_json FROM month_end_stock_report WHERE company_id = :cid AND month = :month AND stock_type = :st AND (beam_quality_id = :bq OR (beam_quality_id IS NULL AND :bq IS NULL)) LIMIT 1");
                    $find->execute([':cid'=>$company_id, ':month'=>$month, ':st'=>$stock_type, ':bq'=>$beam_quality_id]);
                } else {
                    $find = $pdo->prepare("SELECT id, yarns_json FROM month_end_stock_report WHERE company_id = :cid AND month = :month AND stock_type = :st LIMIT 1");
                    $find->execute([':cid'=>$company_id, ':month'=>$month, ':st'=>$stock_type]);
                }
                $existing = $find->fetch(PDO::FETCH_ASSOC);
                if ($existing) {
                    $ex_id = (int)$existing['id'];
                    $existing_json = $existing['yarns_json'] ?: '[]';
                    $dec_existing = json_decode($existing_json, true);
                    if ($dec_existing === null) $dec_existing = [];

if (isset($dec_existing['entries']) && is_array($dec_existing['entries'])) {
                        $merged = $dec_existing;
                    } else {
                        $merged = ['entries' => [$dec_existing]];
                    }

$newEntry = json_decode($final_json_string, true);
                    $newEntry['__merged_at'] = date('c');
                    $newEntry['__merged_by'] = $u['id'] ?? null;
                    $merged['entries'][] = $newEntry;

$upd = $pdo->prepare("UPDATE month_end_stock_report SET yarns_json = :yj, remark = :remark, created_by = :created_by WHERE id = :id");
                    $upd->execute([
                        ':yj' => json_encode($merged, JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES),
                        ':remark' => $remark,
                        ':created_by' => $u['id'] ?? null,
                        ':id' => $ex_id
                    ]);

echo "<div style='color:green;padding:10px;'>Duplicate detected: merged new entry into existing row (id={$ex_id}).</div>";
                    exit;
                } else {
                    echo "<div style='color:red;padding:10px;'>Duplicate error but existing row not found. DB message: " . htmlspecialchars($msg) . "</div>";
                    exit;
                }
            } catch (Exception $e2) {
                echo "<div style='color:red;padding:10px;'>Merge failed: " . htmlspecialchars($e2->getMessage()) . "</div>";
                exit;
            }
        } else {
            echo "<div style='color:red;padding:10px;'>DB error: " . htmlspecialchars($msg) . "</div>";
            exit;
        }
    }
}

/* -------------------- HTML/UI -------------------- */
?>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Month-end Stock Entry — Final</title>
<meta name="viewport" content="width=device-width,initial-scale=1">
<style>
body{font-family:Arial,Helvetica,sans-serif;background:#fff;padding:18px;}
.card{border:1px solid #ddd;border-radius:6px;padding:14px;max-width:1200px;margin:8px auto;}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.form-group{display:flex;flex-direction:column;margin-bottom:8px;}
label{font-weight:600;margin-bottom:6px;}
input.form-control, select.form-control, textarea.form-control{padding:8px;border:1px solid #ccc;border-radius:4px;}
.section{border:1px dashed #ccc;padding:10px;margin:8px 0;border-radius:6px;background:#fafafa;}
.btn{display:inline-block;padding:7px 10px;border-radius:6px;border:0;cursor:pointer;}
.btn-primary{background:#2d6cdf;color:#fff;}
.btn-success{background:#2da54b;color:#fff;}
.small-btn{padding:6px 8px;font-size:12px;margin-left:6px;}
.table{width:100%;border-collapse:collapse;margin-top:8px;}
.table th,.table td{border:1px solid #eee;padding:6px;font-size:13px;}
.mt-2{margin-top:12px;}
.notice{padding:8px;border-radius:6px;margin-bottom:10px;background:#f7f7f7;border:1px solid #eee;}
#beamFetchMsg{font-size:13px;color:#666;margin-left:8px;}
</style>
</head>
<body>
<div class="card">
  <h3>Month-end Stock Entry — Final</h3>

<div class="form-grid">
      <div class="form-group">
        <label for="month">Month</label>
        <input id="month" name="month" type="month" class="form-control" required>
      </div>

<div class="form-group">
        <label for="location">Location</label>
        <select id="location" name="location" class="form-control">
          <option value="">-- Select Location --</option>
          <?php foreach($OPTIONS['location'] as $loc): ?>
            <option value="<?= htmlspecialchars($loc) ?>"><?= htmlspecialchars($loc) ?></option>
          <?php endforeach; ?>
        </select>
      </div>

<div class="form-group">
        <label for="machine_group">Machine Group</label>
        <select id="machine_group" name="machine_group" class="form-control"><option value="">-- Select --</option></select>
      </div>

<div class="form-group">
        <label for="machine_type">Machine Type</label>
        <select id="machine_type" name="machine_type" class="form-control"><option value="">-- Select --</option></select>
      </div>

<div class="form-group">
        <label for="stock_type">Stock Type</label>
        <select id="stock_type" name="stock_type" class="form-control" required>
          <option value="">-- Select --</option>
          <option>Stock in installed beam</option>
          <option>Stock in beam stock</option>
          <option>Stock in open box</option>
          <option>Stock in bobin</option>
        </select>
      </div>

<div class="form-group">
        <label for="beam_quality_id">Beam Quality (if beam)</label>
        <select id="beam_quality_id" name="beam_quality_id" class="form-control">
          <option value="">-- Select Quality --</option>
          <?php
            $stmt = $pdo->prepare("SELECT id,name FROM beam_qualities WHERE company_id = :cid ORDER BY name");
            $stmt->execute([':cid'=>$company_id]);
            foreach($stmt->fetchAll(PDO::FETCH_ASSOC) as $q): ?>
            <option value="<?= (int)$q['id'] ?>"><?= htmlspecialchars($q['name']) ?></option>
          <?php endforeach; ?>
        </select>
      </div>

<div class="form-group">
        <label for="total_meter">Total Meter (for beam)</label>
        <input id="total_meter" name="total_meter" type="number" step="0.001" class="form-control">
      </div>

<div class="form-group">
        <label for="remark">Remark</label>
        <input id="remark" name="remark" class="form-control">
      </div>
    </div>

<div class="mt-2">
      <button id="btnPrepare" type="button" class="btn btn-primary">Prepare Details</button>
      <input type="hidden" name="action" value="save" id="save_action">
      <input type="hidden" name="yarns_json" id="save_yarns_json">
      <input type="hidden" name="month" id="save_month">
      <input type="hidden" name="location_h" id="save_location">
      <input type="hidden" name="machine_group_h" id="save_machine_group">
      <input type="hidden" name="machine_type_h" id="save_machine_type">
      <input type="hidden" name="stock_type_h" id="save_stock_type">
      <input type="hidden" name="beam_quality_id_h" id="save_beam_quality_id">
      <input type="hidden" name="total_meter_h" id="save_total_meter">
      <input type="hidden" name="remark_h" id="save_remark">
      <button id="btnSave" type="button" class="btn btn-success">Save Entry</button>
    </div>
  </form>

<div id="detailArea" style="margin-top:14px; display:none;">
    <div id="beamArea" style="display:none;">
      <h4>Yarn Composition & Calculations (Beam)</h4>
      <div style="margin-bottom:8px;">
        <button id="btnFetchBeam" type="button" class="btn btn-primary small-btn">Fetch Beam Rows</button>
        <span id="beamFetchMsg"></span>
      </div>
      <table class="table" id="beamTable"><thead><tr>
        <th>#</th><th>Stock Type</th><th>Yarn Type</th><th>Color</th><th>Orig Denier</th><th>New Denier</th>
        <th>Total Tar</th><th>Meters</th><th>Weight (kg)</th><th>TPM</th><th>Wastage</th>
      </tr></thead><tbody></tbody></table>
    </div>

<div id="otherSections" style="display:none;">
      <div class="section">
        <strong>Other sections</strong>
        <div>Bobin / Warping / Palti UI omitted for brevity.</div>
      </div>
    </div>
  </div>

</div>

document.addEventListener('DOMContentLoaded', function(){
    const locationEl = $('location'), mgEl = $('machine_group'), mtEl = $('machine_type');
    const btnPrepare = $('btnPrepare'), btnSave = $('btnSave'), btnFetchBeam = $('btnFetchBeam');
    const detailArea = $('detailArea'), beamArea = $('beamArea'), otherSections = $('otherSections');
    const beamTableBody = document.querySelector('#beamTable tbody');
    const beamFetchMsg = $('beamFetchMsg');

function clearSelect(sel, placeholder){ sel.innerHTML = ''; sel.appendChild(new Option(placeholder||'-- Select --','')); }
    function getKeyInsensitive(obj, key) {
      if (!obj) return undefined;
      if (Object.prototype.hasOwnProperty.call(obj, key)) return obj[key];
      const keys = Object.keys(obj);
      const found = keys.find(k => k.toLowerCase() === String(key).toLowerCase());
      return found ? obj[found] : undefined;
    }

locationEl.addEventListener('change', function(){
      clearSelect(mgEl,'-- Select Group --'); clearSelect(mtEl,'-- Select Machine Type --');
      const groups = getKeyInsensitive(OPTIONS.machine_groups, this.value);
      if (Array.isArray(groups)) groups.forEach(g => mgEl.appendChild(createOption(g)));
    });

mgEl.addEventListener('change', function(){
      clearSelect(mtEl,'-- Select Machine Type --');
      const types = getKeyInsensitive(OPTIONS.machine_types, this.value);
      if (Array.isArray(types)) types.forEach(t => mtEl.appendChild(createOption(t)));
    });

function renderBeamRows(rows){
      beamTableBody.innerHTML = '';
      rows.forEach((r,i) => {
        const tr = document.createElement('tr');
        tr.innerHTML = '<td>' + (i+1) + '</td>' +
          '<td>' + escapeHtml(r.stock_type) + '</td>' +
          '<td>' + escapeHtml(r.yarn_type) + '</td>' +
          '<td>' + escapeHtml(r.color) + '</td>' +
          '<td>' + escapeHtml(String(r.denier)) + '</td>' +
          '<td>' + escapeHtml(String(r.new_denier)) + '</td>' +
          '<td>' + escapeHtml(String(r.total_tar)) + '</td>' +
          '<td>' + escapeHtml(String(r.meters)) + '</td>' +
          '<td>' + escapeHtml(String(r.weight_kg)) + '</td>' +
          '<td>' + escapeHtml(String(r.tpm ?? '')) + '</td>' +
          '<td>' + escapeHtml(String(r.wastage ?? '')) + '</td>';
        beamTableBody.appendChild(tr);
      });
    }

function fetchBeamData(){
      const bq = $('beam_quality_id').value;
      const tm = parseFloat($('total_meter').value || 0);
      if (!bq) { alert('Select beam quality first.'); return; }
      if (!(tm > 0)) { alert('Enter total meter for beam'); return; }
      beamFetchMsg.textContent = 'Fetching...';

const fd = new FormData();
      fd.append('action','fetch');
      fd.append('beam_quality_id', bq);
      fd.append('total_meter', tm);

fetch(window.location.href, { method: 'POST', body: fd })
        .then(r => r.json())
        .then(j => {
          if (!j.success) {
            beamFetchMsg.textContent = 'No data: ' + (j.msg || '');
            renderBeamRows([]);
            return;
          }
          renderBeamRows(j.data || []);
          beamFetchMsg.textContent = 'Rows loaded: ' + (j.data ? j.data.length : 0);
        })
        .catch(err => {
          console.error('fetchBeamData error', err);
          beamFetchMsg.textContent = 'Fetch error (see console).';
        });
    }

if (btnFetchBeam) btnFetchBeam.addEventListener('click', function(e){ e.preventDefault(); fetchBeamData(); });

btnPrepare.addEventListener('click', function(e){
      e.preventDefault();
      if (!$('month').value || !$('stock_type').value) return alert('Select month and stock type first.');
      $('save_month').value = $('month').value;
      $('save_location').value = $('location').value;
      $('save_machine_group').value = $('machine_group').value;
      $('save_machine_type').value = $('machine_type').value;
      $('save_stock_type').value = $('stock_type').value;
      $('save_beam_quality_id').value = $('beam_quality_id').value;
      $('save_total_meter').value = $('total_meter').value;
      $('save_remark').value = $('remark').value;

detailArea.style.display = 'block';
      const mt = ($('machine_type').value || '').toLowerCase();
      if (mt.includes('beam')) {
        beamArea.style.display = 'block';
        otherSections.style.display = 'none';
        fetchBeamData();
      } else {
        beamArea.style.display = 'none';
        otherSections.style.display = 'block';
      }
    });

btnSave.addEventListener('click', function(e){
      e.preventDefault();
      if (!$('month').value) return alert('Select month first.');
      if (!$('stock_type').value) return alert('Select stock type.');

let payload = {};
      payload.location = $('save_location').value || $('location').value || '';
      payload.machine_group = $('save_machine_group').value || $('machine_group').value || '';
      payload.machine_type = $('save_machine_type').value || $('machine_type').value || '';
      payload.stock_type = $('save_stock_type').value || $('stock_type').value || '';
      payload.month = $('save_month').value || $('month').value || '';
      payload.remark = $('save_remark').value || $('remark').value || '';
      payload.created_by = <?= (int)($u['id'] ?? 0) ?>;
      payload.meta = { prepared_at: new Date().toISOString(), prepared_by: <?= (int)($u['id'] ?? 0) ?> };

if (window.PREPARED_JSON) {
        try { payload.sections = JSON.parse(window.PREPARED_JSON); } catch(e) { payload.sections = window.PREPARED_JSON; }
      } else {
        if (beamArea.style.display !== 'none') {
          payload.sections = payload.sections || {};
          payload.sections.beam = [];
          document.querySelectorAll('#beamTable tbody tr').forEach(tr => {
            const td = tr.querySelectorAll('td');
            payload.sections.beam.push({
              stock_type: td[1].textContent,
              yarn_type: td[2].textContent,
              color: td[3].textContent,
              denier: td[4].textContent,
              new_denier: td[5].textContent,
              total_tar: td[6].textContent,
              meters: td[7].textContent,
              weight_kg: td[8].textContent
            });
          });
        } else {
          payload.sections = payload.sections || [];
        }
      }

payload.beam_quality_id = $('beam_quality_id').value || null;
      payload.total_meter = $('total_meter').value || null;

// IMPORTANT: use native JS stringify only (no PHP constants)
      $('save_yarns_json').value = JSON.stringify(payload);
      $('save_month').value = $('month').value;
      $('save_stock_type').value = $('stock_type').value;

// disable Save button while request is in progress
      btnSave.disabled = true;
      btnSave.textContent = 'Saving...';

const fd = new FormData(document.getElementById('mainForm'));
      fd.set('action','save');

fetch(window.location.href, { method: 'POST', body: fd })
        .then(r => r.text())
        .then(html => {
          let notice = document.querySelector('.notice');
          if (!notice) {
            notice = document.createElement('div'); notice.className = 'notice';
            document.querySelector('.card').insertBefore(notice, document.querySelector('.card').firstChild.nextSibling);
          }
          notice.innerHTML = html;
        })
        .catch(err => {
          console.error('save error', err);
          let notice = document.querySelector('.notice');
          if (!notice) {
            notice = document.createElement('div'); notice.className = 'notice';
            document.querySelector('.card').insertBefore(notice, document.querySelector('.card').firstChild.nextSibling);
          }
          notice.innerHTML = '<div style="color:red">Save failed — see console for details.</div>';
        })
        .finally(() => {
          btnSave.disabled = false;
          btnSave.textContent = 'Save Entry';
        });
    });
  });
})();
</script>

</body>
</html>