<?php
defined('BASEPATH') or exit('No direct script access allowed');

require_once(APPPATH . 'libraries/fpdf/fpdf.php');

// =============================================================================
// Custom FPDF: override Footer() agar tampil otomatis di SETIAP halaman
// Footer tidak bisa bergeser karena FPDF memanggil Footer() sebelum ganti hal.
// =============================================================================
class ReceiveTransferFpdf extends FPDF
{
   public $printUsername = '-';
   public $printDate     = '';

   public function __construct($orientation = 'P', $unit = 'mm', $size = 'A4')
   {
      parent::__construct($orientation, $unit, $size);
      // Daftarkan Arial Narrow — file font ada di fpdf/font/Arial_Narrow.php
      $this->AddFont('Arial_Narrow', '',  'Arial_Narrow.php');   // regular
      $this->AddFont('Arial_Narrow', 'B', 'Arial_Narrow_B.php'); // bold (Liberation Sans Narrow Bold)
   }

   public function Footer()
   {
      $pageW = $this->GetPageWidth() - 30; // sama dengan margin 15+15

      // ── Posisi: 20mm dari bawah halaman ──────────────────────────────────
      $this->SetY(-20);

      // ── Baris 1: Print Oleh (kiri) | Nomor Halaman (tengah) ───────────────
      $colSide   = ($pageW - 40) / 2;
      $colCenter = 40;

      $this->SetFont('Arial_Narrow', '', 7);
      $this->Cell($colSide,   4, 'Print Oleh : ' . $this->printUsername, 0, 0, 'L');
      $this->Cell($colCenter, 4, $this->PageNo() . ' / {nb}',            0, 0, 'C');
      $this->Cell($colSide,   4, '',                                      0, 1, 'R');


      // ── Baris 2: Tgl Print (kiri) ──────────────────────────────────────────
      $this->SetFont('Arial_Narrow', '', 7);
      $this->Cell($colSide, 4, 'Tgl Print   : ' . $this->printDate, 0, 0, 'L');
      $this->Cell($colCenter + $colSide, 4, '', 0, 1, 'L');
   }
}

// =============================================================================
// Controller
// =============================================================================
class Rpt_receive_transfer extends MY_Controller
{
   // ── Properti bersama antar fungsi PDF ─────────────────────────────────────
   /** @var ReceiveTransferFpdf */
   private $_pdf;
   private $_pageW;
   private $_header_data;
   private $_username;

   public function __construct()
   {
      parent::__construct();
   }

   public function index()
   {
      echo "Receive Transfer Report API";
   }

   // =========================================================================
   // ENDPOINT: pdf
   // GET/POST: id (SuratJalanID), username (opsional)
   // =========================================================================
   public function pdf()
   {
      try {
         $id       = intval($this->input->get_post('id'));
         $username = trim($this->input->get_post('username') ?? '');

         if ($id <= 0) {
            $this->sys_error("ID tidak valid");
            exit;
         }

         // ── Ambil data header & detail dari DB ────────────────────────────
         $header  = $this->_get_header($id);
         $details = $this->_get_detail($id);

         // ── Inisialisasi FPDF custom ──────────────────────────────────────
         $this->_pdf                  = new ReceiveTransferFpdf('P', 'mm', 'A4');
         $this->_pdf->printUsername   = $username !== '' ? $username : '-';
         $this->_pdf->printDate       = date('d-m-Y H:i:s');
         $this->_pageW                = $this->_pdf->GetPageWidth() - 30;
         $this->_header_data          = $header;
         $this->_username             = $this->_pdf->printUsername;

         $this->_pdf->AliasNbPages();                 // aktifkan alias total halaman
         $this->_pdf->SetMargins(15, 15, 15);
         $this->_pdf->SetAutoPageBreak(true, 22);     // 22mm ruang footer di bawah
         $this->_pdf->AddPage();

         // ── Susun isi halaman ─────────────────────────────────────────────
         $this->_pdf_header();
         $this->_pdf_data($details);
         $this->_pdf_terms();

         // ── Output ────────────────────────────────────────────────────────
         $filename = 'RT_' . str_replace('/', '-', $header['SuratJalanNumber']) . '.pdf';
         header('Content-Type: application/pdf');
         header('Content-Disposition: inline; filename="' . $filename . '"');
         header('Cache-Control: private, max-age=0, must-revalidate');
         header('Pragma: public');
         echo $this->_pdf->Output('S');
      } catch (Exception $exc) {
         $this->sys_error($exc->getMessage());
      }
   }

   // =========================================================================
   // DATABASE: Ambil data header
   // =========================================================================
   private function _get_header($id)
   {
      $sql = "
         SELECT
            sj.*,
            ex.ExpeditionName,
            ex.ExpeditionIsInternal,
            exs.ExpeditionStaffName,
            exs.ExpeditionStaffMobile,
            tg.T_GoodsTransferNum,
            tg.T_GoodsTransferDate,
            tg.T_GoodsTransferType,
            tg.T_GoodsTransferFromM_BranchCode,
            tg.T_GoodsTransferToM_BranchCode,
            rFrom.S_RegionalName AS RegionalFromName,
            bTo.M_BranchName AS BranchToName,
            bTo.M_BranchAddress AS BranchToAddress,
            wh.WarehouseName AS ReceivedWarehouseName,
            IFNULL(uRec.M_UserUsername, '') AS ReceivedByName
         FROM suratjalan sj
         LEFT JOIN t_goods_transfer tg ON tg.T_GoodsTransferID = sj.SuratJalanT_GoodsTransferID
            AND tg.T_GoodsTransferIsActive = 'Y'
         LEFT JOIN expedition ex ON ex.ExpeditionID = sj.SuratJalanEkspedisiID
            AND ex.ExpeditionIsActive = 'Y'
         LEFT JOIN expeditionstaff exs ON exs.ExpeditionStaffID = sj.SuratJalanEkspedisiStaffID
            AND exs.ExpeditionStaffIsActive = 'Y'
         LEFT JOIN s_regional rFrom ON rFrom.S_RegionalID = tg.T_GoodsTransferFromS_RegionalID
         LEFT JOIN m_branch bTo ON bTo.M_BranchCode = tg.T_GoodsTransferToM_BranchCode
         LEFT JOIN warehouse wh ON wh.WarehouseID = sj.SuratJalanReceivedWarehouseID
         LEFT JOIN m_user uRec ON uRec.M_UserID = sj.SuratJalanReceivedUserID
         WHERE sj.SuratJalanIsActive = 'Y'
            AND sj.SuratJalanID = ?
         LIMIT 1
      ";
      $qry = $this->db->query($sql, array($id));
      if (!$qry || $qry->num_rows() === 0) {
         $this->sys_error("Data Penerimaan Surat Jalan tidak ditemukan");
         exit;
      }
      return $qry->row_array();
   }

   // =========================================================================
   // DATABASE: Ambil data detail
   // =========================================================================
   private function _get_detail($id)
   {
      $sql = "
         SELECT
            sjd.*,
            item.M_ItemCode,
            item.M_ItemDesc,
            iu.ItemUnitName,
            iu.ItemUnitCode,
            pr.PurchaseRequestNumber
         FROM suratjalan_detail sjd
         JOIN m_item item ON item.M_ItemID = sjd.SuratJalanDetailM_ItemID
            AND item.M_ItemIsActive = 'Y'
         LEFT JOIN itemunit iu ON iu.ItemUnitID = sjd.SuratJalanDetailItemUnitID
            AND iu.ItemUnitIsActive = 'Y'
         LEFT JOIN purchase_request_flag prf ON prf.PurchaseRequestFlagID = sjd.SuratJalanDetailPurchaseRequestFlagID
            AND prf.PurchaseRequestFlagIsActive = 'Y'
         LEFT JOIN purchase_request_detail prd ON prd.PurchaseRequestDetailID = prf.PurchaseRequestFlagPurchaseRequestDetailID
         LEFT JOIN purchase_request pr ON pr.PurchaseRequestID = prd.PurchaseRequestDetailPurchaseRequestID
         WHERE sjd.SuratJalanDetailIsActive = 'Y'
            AND sjd.SuratJalanDetailSuratJalanID = ?
         ORDER BY sjd.SuratJalanDetailID ASC
      ";
      $qry = $this->db->query($sql, array($id));
      return $qry ? $qry->result_array() : array();
   }

   // =========================================================================
   // PDF SECTION: Header — Judul + Informasi Dokumen (2 kolom)
   // =========================================================================
   private function _pdf_header()
   {
      $pdf    = $this->_pdf;
      $pageW  = $this->_pageW;
      $header = $this->_header_data;

      // ── Judul utama ───────────────────────────────────────────────────────
      $pdf->SetFont('Arial_Narrow', 'B', 14);
      $pdf->Cell($pageW, 8, 'RECEIVE TRANSFER REPORT (RT)', 0, 1, 'L');
      $pdf->SetDrawColor(0, 0, 0);
      $pdf->SetLineWidth(0.5);
      $pdf->Line(15, $pdf->GetY(), 15 + $pageW, $pdf->GetY());
      $pdf->Ln(2);

      $startY = $pdf->GetY();
      $halfW  = $pageW / 2;
      $lblW   = 28;
      $valW   = $halfW - $lblW - 4;

      // ── Kolom Kiri ────────────────────────────────────────────────────────
      $pdf->SetY($startY);

      $leftItems = array(
         array('Nomor SJ',       $header['SuratJalanNumber'], true),
         array('Tanggal SJ',     $this->_fmt_date($header['SuratJalanDate']), false),
         array('Tanggal Terima', $this->_fmt_date($header['SuratJalanReceivedDate']), false),
         array('Gudang Terima',  $header['ReceivedWarehouseName'] ?: '-', false),
         array('Status',         $header['SuratJalanStatus'], false),
      );

      foreach ($leftItems as $item) {
         $pdf->SetX(15);
         $pdf->SetFont('Arial_Narrow', '', 9);
         $pdf->Cell($lblW, 5, $item[0], 0, 0, 'L');
         $pdf->Cell(4,    5, ':', 0, 0, 'C');
         if ($item[2]) {
            $pdf->SetFont('Arial_Narrow', 'B', 9);
         } else {
            $pdf->SetFont('Arial_Narrow', '', 9);
         }
         $pdf->Cell($valW, 5, $item[1], 0, 1, 'L');
      }

      // Keterangan / Note langsung di bawah Status (tanpa spasi vertikal)
      if (!empty($header['SuratJalanReceivedNote'])) {
         $pdf->SetX(15);
         $pdf->SetFont('Arial_Narrow', '', 9);
         $pdf->Cell($lblW, 5, 'Catatan Terima', 0, 0, 'L');
         $pdf->Cell(4,    5, ':', 0, 0, 'C');
         $pdf->MultiCell($valW, 5, $header['SuratJalanReceivedNote'], 0, 'L');
      }
      $leftY = $pdf->GetY();

      // ── Kolom Kanan ───────────────────────────────────────────────────────
      $pdf->SetY($startY);
      $rightX = 15 + $halfW;

      $rightItems = array(
         array('Dari Regional',   $header['RegionalFromName'] ?: '-'),
         array('Tujuan Cabang',  $header['BranchToName'] ?: '-'),
         array('Alamat Tujuan',  $header['BranchToAddress'] ?: '-'),
         array('Ekspedisi',      $header['ExpeditionName'] ?: '-'),
         array('Driver / Staf',  $header['ExpeditionStaffName'] ?: '-'),
         array('Diterima Oleh',  $header['ReceivedByName'] ?: '-'),
      );

      foreach ($rightItems as $item) {
         $pdf->SetX($rightX);
         $pdf->SetFont('Arial_Narrow', '', 9);
         $pdf->Cell($lblW, 5, $item[0], 0, 0, 'L');
         $pdf->Cell(4,    5, ':', 0, 0, 'C');
         $pdf->SetFont('Arial_Narrow', '', 9);

         if ($item[0] === 'Alamat Tujuan') {
            $pdf->MultiCell($valW, 5, $item[1], 0, 'L');
         } else {
            $pdf->Cell($valW, 5, $item[1], 0, 1, 'L');
         }
      }
      $rightY = $pdf->GetY();

      // Posisikan Y ke yang paling bawah + margin
      $pdf->SetY(max($leftY, $rightY) + 4);
   }

   // =========================================================================
   // PDF SECTION: Data — Tabel detail item
   // =========================================================================
   private function _pdf_data($details)
   {
      $pdf    = $this->_pdf;
      $pageW  = $this->_pageW;
      $header = $this->_header_data;

      // ── Definisi kolom: [label, lebar, align] ─────────────────────────────
      // Total lebar = 180mm (A4 portrait: 210 - margin 15 kiri - 15 kanan)
      // 8 + 59 + 20 + 20 + 20 + 17 + 36 = 180
      $cols = array(
         array('No',                8,  'C'),
         array('Nama',     59, 'L'),
         array('Unit',              20, 'C'),
         array('Qty Kirim',         20, 'R'),
         array('Qty Terima',        20, 'R'),
         array('Selisih',           17, 'R'),
         array('No. PR / Ref',      36, 'L'),
      );

      // Header kolom
      $pdf->SetLineWidth(0.3); // border medium
      $pdf->SetFont('Arial_Narrow', 'B', 8);
      $pdf->SetFillColor(220, 220, 220);
      $pdf->SetDrawColor(0, 0, 0);
      foreach ($cols as $c) {
         $pdf->Cell($c[1], 7, $c[0], 1, 0, 'C', true);
      }
      $pdf->Ln();

      // Baris data
      $pdf->SetLineWidth(0.2); // border lebih tipis di data
      $pdf->SetFont('Arial_Narrow', '', 8);
      $pdf->SetFillColor(255, 255, 255);
      $no        = 1;

      foreach ($details as $d) {
         $qtyKirim  = intval($d['SuratJalanDetailQty']);
         $qtyTerima = intval($d['SuratJalanDetailQtyReceived']);
         $selisih   = $qtyKirim - $qtyTerima;

         $pdf->Cell($cols[0][1], 6, $no,                                                         1, 0, 'C');
         $pdf->Cell($cols[1][1], 6, $d['M_ItemDesc'] ?: ($d['M_ItemCode'] ?: '-'),               1, 0, 'L');
         $pdf->Cell($cols[2][1], 6, $d['ItemUnitName'] ?: ($d['ItemUnitCode'] ?: '-'),           1, 0, 'C');
         $pdf->Cell($cols[3][1], 6, $this->_fmt_qty($qtyKirim),                                  1, 0, 'C');
         $pdf->Cell($cols[4][1], 6, $this->_fmt_qty($qtyTerima),                                 1, 0, 'C');
         $pdf->Cell($cols[5][1], 6, $this->_fmt_qty($selisih),                                   1, 0, 'C');
         $pdf->Cell($cols[6][1], 6, $d['PurchaseRequestNumber'] ?: '-',                         1, 0, 'L');
         $pdf->Ln();

         $no++;
      }

      $pdf->Ln(4);
   }

   // =========================================================================
   // PDF SECTION: Syarat & Ketentuan
   // =========================================================================
   private function _pdf_terms()
   {
      $pdf   = $this->_pdf;
      $pageW = $this->_pageW;

      $terms = array(
         'Barang yang diterima telah diverifikasi secara kuantitas dan kualitas sesuai dengan fisik yang diserahterimakan.',
         'Segala ketidaksesuaian/selisih barang harus dilaporkan dalam waktu 1x24 jam sejak dokumen ini ditandatangani.',
         'Penerimaan barang ini sah secara sistem setelah dokumen ini divalidasi dan disimpan di sistem persediaan.',
         'Dokumen ini dicetak secara otomatis dari sistem ERP One-API.'
      );

      $pdf->SetFont('Arial_Narrow', 'B', 9);
      $pdf->Cell($pageW, 5, 'Syarat & Ketentuan:', 0, 1, 'L');

      $pdf->SetFont('Arial_Narrow', '', 8);
      foreach ($terms as $i => $t) {
         $pdf->Cell(6,            5, ($i + 1) . '.', 0, 0, 'R');
         $pdf->Cell($pageW - 6,   5, $t,             0, 1, 'L');
      }
   }

   // =========================================================================
   // HELPER: Format tampilan
   // =========================================================================
   private function _fmt_date($d)
   {
      if (!$d || $d === '0000-00-00') return '-';
      return date('d-m-Y', strtotime($d));
   }

   private function _fmt_datetime($d)
   {
      if (!$d || $d === '0000-00-00 00:00:00') return '-';
      return date('d-m-Y H:i', strtotime($d));
   }

   private function _fmt_num($n)
   {
      return number_format(floatval($n), 2, ',', '.');
   }

   // format jumlah/qty: tanpa desimal
   private function _fmt_qty($n)
   {
      return number_format(floatval($n), 0, ',', '.');
   }

   private function _fmt_rp($n)
   {
      return 'Rp ' . number_format(floatval($n), 2, ',', '.');
   }
}