{% extends "base.html" %}
{% block title %}Retur Pembelian - FinansialApp{% endblock %}
{% block page_title %}Retur Pembelian{% endblock %}
{% block content %}

<div class="row justify-content-center">
<div class="col-lg-9">

<style>
.retur-journal-preview{background:var(--card-h);border:1px solid var(--bdr-md);border-radius:8px;color:var(--tx);padding:.85rem .95rem}
.retur-journal-preview .rjp-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:.55rem;color:var(--tx2);font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:0}
.retur-journal-preview .rjp-note{color:var(--tx3);font-size:.74rem;line-height:1.45;margin-top:.55rem}
.retur-journal-preview .rjp-row{display:grid;grid-template-columns:minmax(0,1fr) 120px 120px;gap:.65rem;align-items:center;padding:.38rem 0;border-top:1px solid var(--bdr)}
.retur-journal-preview .rjp-row:first-of-type{border-top:0}
.retur-journal-preview .rjp-akun{min-width:0;font-weight:650;font-size:.82rem;overflow-wrap:anywhere}
.retur-journal-preview .rjp-amount{text-align:right;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.8rem;color:var(--tx)}
.retur-journal-preview .rjp-empty{color:var(--tx3);font-size:.8rem;padding:.45rem 0}
[data-theme=dark] .retur-journal-preview{background:rgba(15,23,42,.72);border-color:rgba(148,163,184,.26)}
[data-theme=dark] .retur-journal-preview .rjp-row{border-color:rgba(148,163,184,.18)}
@media (max-width:576px){.retur-journal-preview .rjp-row{grid-template-columns:1fr 1fr}.retur-journal-preview .rjp-akun{grid-column:1/-1}.retur-journal-preview .rjp-amount{text-align:left}}
</style>

<div class="alert alert-info py-2 mb-3" style="font-size:.85rem">
  <i class="fas fa-circle-info me-1"></i>
  Retur pembelian mencatat barang yang dikembalikan ke supplier. Jurnalnya:
  Debit Kas/Bank atau <strong>Hutang Usaha (2100)</strong>, Kredit <strong>Persediaan (1130)</strong>.
  Stok produk otomatis berkurang.
</div>

<ul class="nav nav-tabs mb-3" id="modeTabs">
  <li class="nav-item">
    <a class="nav-link active" id="tab-umum" href="#" onclick="switchMode('umum');return false">
      <i class="fas fa-file-invoice-dollar me-1"></i>Retur Umum (Nominal)</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" id="tab-produk" href="#" onclick="switchMode('produk');return false">
      <i class="fas fa-boxes-stacked me-1"></i>Retur per Produk</a>
  </li>
</ul>

<!-- ════════════════ FORM RETUR UMUM ════════════════ -->
<div id="form-umum">
<div class="card">
  <div class="card-header d-flex align-items-center gap-2">
    <i class="fas fa-rotate-right text-info"></i>
    <span class="section-title">Retur Pembelian, Nominal</span>
  </div>
  <div class="card-body">
  <form method="POST">
    <input type="hidden" name="mode" value="umum">
    <div class="row g-3">
      <div class="col-md-6">
        <label class="form-label fw-semibold">Tanggal <span class="text-danger">*</span></label>
        <input type="date" name="tanggal" class="form-control" value="{{ today }}" max="{{ today }}" required>
      </div>
      <div class="col-md-6">
        <label class="form-label fw-semibold">Sumber Pengembalian dari Supplier <span class="text-danger">*</span></label>
        <select name="sumber" class="form-select" onchange="toggleSumber(this, 'u')">
          <option value="kas">Refund Tunai (Kas/Bank masuk)</option>
          <option value="hutang">Potong Hutang ke Supplier</option>
        </select>
      </div>
      <div class="col-md-6" id="u_kas_box">
        <label class="form-label fw-semibold"><i class="fas fa-vault text-success me-1"></i>Rekening Kas/Bank</label>
        <select name="akun_kas" class="form-select">
          {% for a in akun_kas %}
          <option value="{{ a.kode }}">{{ a.kode }} - {{ a.nama }}</option>
          {% endfor %}
        </select>
      </div>
      <div class="col-md-6">
        <label class="form-label fw-semibold">Nama Supplier</label>
        <input type="text" name="pemasok" class="form-control" placeholder="Untuk pencarian hutang">
        <div class="form-text">Wajib diisi jika sumber = potong hutang.</div>
      </div>
      <div class="col-md-6" id="u_hutang_box" style="display:none">
        <label class="form-label fw-semibold">Hutang Sumber</label>
        <select name="hutang_id" class="form-select">
          <option value="">Auto cari dari nama + nominal</option>
          {% for h in hutang_aktif %}
          <option value="{{ h.id }}">{{ h.pemasok }} - {{ h.keterangan or 'Hutang' }} - sisa {{ h.sisa|rp }}</option>
          {% endfor %}
        </select>
        <div class="form-text">Pilih jika ada beberapa hutang supplier yang mirip.</div>
      </div>
      <div class="col-12">
        <label class="form-label fw-semibold">Keterangan <span class="text-danger">*</span></label>
        <input type="text" name="keterangan" class="form-control" placeholder="Mis: Retur ke PT XYZ, produk rusak" required>
      </div>
      <div class="col-md-6">
        <label class="form-label fw-semibold">Nominal Retur <span class="text-danger">*</span></label>
        <div class="input-group">
          <span class="input-group-text">Rp</span>
          <input type="number" name="nominal" class="form-control" min="1" step="1" required placeholder="0">
        </div>
        <div class="form-text">Saldo Persediaan (1130): <strong>{{ saldo_persediaan|rp }}</strong></div>
      </div>
      <div class="col-12">
        <div class="retur-journal-preview" id="preview-beli-umum"></div>
      </div>

      <div class="col-12">
        <button class="btn btn-info text-white" type="submit">
          <i class="fas fa-rotate-right me-1"></i>Catat Retur Pembelian</button>
      </div>
    </div>
  </form>
  </div>
</div>
</div>

<!-- ════════════════ FORM RETUR PER PRODUK ════════════════ -->
<div id="form-produk" style="display:none">
<div class="card">
  <div class="card-header d-flex align-items-center gap-2">
    <i class="fas fa-boxes-stacked text-info"></i>
    <span class="section-title">Retur Pembelian, per Produk</span>
  </div>
  <div class="card-body">
  <form method="POST">
    <input type="hidden" name="mode" value="produk">
    <div class="row g-3">
      <div class="col-md-6">
        <label class="form-label fw-semibold">Tanggal <span class="text-danger">*</span></label>
        <input type="date" name="tanggal" class="form-control" value="{{ today }}" max="{{ today }}" required>
      </div>
      <div class="col-md-6">
        <label class="form-label fw-semibold">Sumber Pengembalian <span class="text-danger">*</span></label>
        <select name="sumber" class="form-select" onchange="toggleSumber(this, 'p')">
          <option value="kas">Refund Tunai (Kas/Bank masuk)</option>
          <option value="hutang">Potong Hutang ke Supplier</option>
        </select>
      </div>
      <div class="col-md-6" id="p_kas_box">
        <label class="form-label fw-semibold"><i class="fas fa-vault text-success me-1"></i>Rekening Kas/Bank</label>
        <select name="akun_kas" class="form-select">
          {% for a in akun_kas %}
          <option value="{{ a.kode }}">{{ a.kode }} - {{ a.nama }}</option>
          {% endfor %}
        </select>
      </div>
      <div class="col-md-6">
        <label class="form-label fw-semibold">Nama Supplier</label>
        <input type="text" name="pemasok" class="form-control" placeholder="Untuk pencarian hutang">
      </div>
      <div class="col-md-6" id="p_hutang_box" style="display:none">
        <label class="form-label fw-semibold">Hutang Sumber</label>
        <select name="hutang_id" class="form-select">
          <option value="">Auto cari dari nama + nominal</option>
          {% for h in hutang_aktif %}
          <option value="{{ h.id }}">{{ h.pemasok }} - {{ h.keterangan or 'Hutang' }} - sisa {{ h.sisa|rp }}</option>
          {% endfor %}
        </select>
      </div>
      <div class="col-12">
        <label class="form-label fw-semibold">Keterangan <span class="text-danger">*</span></label>
        <input type="text" name="keterangan" class="form-control" placeholder="Mis: Retur ke PT XYZ" required>
      </div>

      <div class="col-12">
        <label class="form-label fw-semibold">Produk yang Diretur</label>
        <div class="table-responsive">
          <table class="table table-sm align-middle table-sticky-actions mb-2" id="produk-table">
            <thead><tr>
              <th style="width:38%">Produk (stok)</th>
              <th style="width:15%">Qty</th>
              <th style="width:22%">Harga Beli</th>
              <th style="width:20%">Subtotal</th>
              <th></th>
            </tr></thead>
            <tbody id="rows-body">
              <tr>
                <td>
                  <select name="produk_id[]" class="form-select form-select-sm" onchange="loadHarga(this)">
                    <option value="">-- pilih produk --</option>
                    {% for p in produk_list %}
                    <option value="{{ p.id }}" data-harga="{{ p.harga_beli }}" data-stok="{{ p.stok }}">
                      {{ p.kode }}, {{ p.nama }} (stok: {{ p.stok|qty }})
                    </option>
                    {% endfor %}
                  </select>
                </td>
                <td><input type="number" name="qty[]" class="form-control form-control-sm" min="0.01" step="any" value="1" oninput="hitungSub(this)"></td>
                <td>
                  <div class="input-group input-group-sm">
                    <span class="input-group-text">Rp</span>
                    <input type="number" name="harga_beli[]" class="form-control form-control-sm" min="0" step="1" oninput="hitungSub(this)">
                  </div>
                </td>
                <td><span class="sub-display fw-semibold">Rp 0</span></td>
                <td><button type="button" class="btn btn-sm btn-outline-danger" onclick="hapusRow(this)"><i class="fas fa-trash"></i></button></td>
              </tr>
            </tbody>
          </table>
          <button type="button" class="btn btn-outline-secondary btn-sm" onclick="tambahRow()">
            <i class="fas fa-plus me-1"></i>Tambah Produk</button>
        </div>
      </div>

      <div class="col-12">
        <div class="rounded-3 p-3" style="background:#dbeafe;border:1px solid #93c5fd">
          <div class="d-flex justify-content-between align-items-center">
            <span class="fw-semibold text-primary-emphasis">Total Retur</span>
            <span class="fs-5 fw-bold text-primary-emphasis" id="total-display">Rp 0</span>
          </div>
        </div>
      </div>

      <div class="col-12">
        <div class="retur-journal-preview" id="preview-beli-produk"></div>
      </div>

      <div class="col-12">
        <button class="btn btn-info text-white" type="submit">
          <i class="fas fa-rotate-right me-1"></i>Catat Retur per Produk</button>
      </div>
    </div>
  </form>
  </div>
</div>
</div>

<script>
function fmtRp(n){ return window.rpAbsFmt ? window.rpAbsFmt(n) : 'Rp ' + Math.round(Math.abs(n || 0)).toLocaleString('id-ID'); }
function readInput(el){
  if(!el) return 0;
  if(window.numVal) return window.numVal(el);
  return parseFloat(String(el.value || '0').replace(/\./g,'').replace(',','.')) || 0;
}
function selectedText(sel, fallback){ return sel && sel.options[sel.selectedIndex] ? sel.options[sel.selectedIndex].textContent.trim() : fallback; }
function journalHtml(rows, note){
  const active = rows.filter(r => (r.debit || 0) > 0 || (r.kredit || 0) > 0);
  let html = '<div class="rjp-head"><span><i class="fas fa-book-open me-1"></i>Pratinjau Jurnal</span><span>Debit / Kredit</span></div>';
  if(!active.length){
    html += '<div class="rjp-empty">Isi nominal untuk melihat posisi jurnal otomatis.</div>';
  } else {
    active.forEach(r => {
      html += '<div class="rjp-row"><div class="rjp-akun">'+r.akun+'</div><div class="rjp-amount">'+((r.debit||0)>0?fmtRp(r.debit):'-')+'</div><div class="rjp-amount">'+((r.kredit||0)>0?fmtRp(r.kredit):'-')+'</div></div>';
    });
    const td = active.reduce((s,r)=>s+(r.debit||0),0);
    const tk = active.reduce((s,r)=>s+(r.kredit||0),0);
    html += '<div class="rjp-row"><div class="rjp-akun">Total</div><div class="rjp-amount">'+fmtRp(td)+'</div><div class="rjp-amount">'+fmtRp(tk)+'</div></div>';
  }
  if(note) html += '<div class="rjp-note">'+note+'</div>';
  return html;
}
function setPreview(id, rows, note){ const el = document.getElementById(id); if(el) el.innerHTML = journalHtml(rows, note); }
function contraAkun(scope){
  const sumber = scope.querySelector('select[name="sumber"]');
  if(sumber && sumber.value === 'hutang') return '2100 - Hutang Usaha';
  return selectedText(scope.querySelector('select[name="akun_kas"]'), '1100 - Kas');
}
function switchMode(m){
  document.getElementById('form-umum').style.display   = m==='umum'?'block':'none';
  document.getElementById('form-produk').style.display = m==='produk'?'block':'none';
  document.getElementById('tab-umum').classList.toggle('active', m==='umum');
  document.getElementById('tab-produk').classList.toggle('active', m==='produk');
  updateReturPreview();
}
function toggleSumber(sel, prefix){
  document.getElementById(prefix+'_kas_box').style.display = sel.value==='kas'?'block':'none';
  const hutangBox = document.getElementById(prefix+'_hutang_box');
  if(hutangBox) hutangBox.style.display = sel.value==='hutang'?'block':'none';
  updateReturPreview();
}
function loadHarga(sel){
  const opt = sel.options[sel.selectedIndex];
  const harga = opt ? (opt.dataset.harga || 0) : 0;
  const row = sel.closest('tr');
  const input = row.querySelector('input[name="harga_beli[]"]');
  if(window.numFmtSet) window.numFmtSet(input, harga); else input.value = harga;
  hitungSub(sel);
}
function hitungSub(el){
  const row = el.closest('tr');
  const qty  = readInput(row.querySelector('input[name="qty[]"]'));
  const harga= readInput(row.querySelector('input[name="harga_beli[]"]'));
  const sub  = qty*harga;
  row.querySelector('.sub-display').textContent = fmtRp(sub);
  hitungTotal();
}
function productTotal(){
  let total = 0;
  document.querySelectorAll('#rows-body tr').forEach(tr=>{
    const q = readInput(tr.querySelector('input[name="qty[]"]'));
    const h = readInput(tr.querySelector('input[name="harga_beli[]"]'));
    total += q*h;
  });
  return total;
}
function hitungTotal(){
  const total = productTotal();
  document.getElementById('total-display').textContent = fmtRp(total);
  updateReturBeliProduk();
}
function updateReturBeliUmum(){
  const scope = document.getElementById('form-umum');
  const nominal = readInput(scope.querySelector('input[name="nominal"]'));
  const rows = [
    {akun:contraAkun(scope), debit:nominal, kredit:0},
    {akun:'1130 - Persediaan Barang', debit:0, kredit:nominal}
  ];
  setPreview('preview-beli-umum', rows, 'Retur pembelian mengurangi persediaan. Jika sumber potong hutang, server memakai akun hutang dari tagihan terkait.');
}
function updateReturBeliProduk(){
  const scope = document.getElementById('form-produk');
  const total = productTotal();
  const rows = [
    {akun:contraAkun(scope), debit:total, kredit:0},
    {akun:'1130 - Persediaan Barang', debit:0, kredit:total}
  ];
  setPreview('preview-beli-produk', rows, 'Mode per produk juga mengurangi stok SKU dan valuasi persediaan.');
}
function updateReturPreview(){ updateReturBeliUmum(); updateReturBeliProduk(); }
function tambahRow(){
  const body = document.getElementById('rows-body');
  const first = body.querySelector('tr');
  const clone = first.cloneNode(true);
  clone.querySelectorAll('input').forEach(i=>{i.value=i.name==='qty[]'?'1':'';});
  clone.querySelector('select').value='';
  clone.querySelector('.sub-display').textContent='Rp 0';
  body.appendChild(clone);
  if(window.numFmtInitAll) window.numFmtInitAll();
  hitungTotal();
}
function hapusRow(btn){
  const body = document.getElementById('rows-body');
  const tr = btn.closest('tr');
  if(body.querySelectorAll('tr').length<=1){
    // Baris terakhir → kosongkan isinya (bukan diam saja) supaya tombol X selalu berfungsi.
    tr.querySelectorAll('input').forEach(i=>{ i.value = (i.name==='qty[]' ? '1' : ''); });
    const sel = tr.querySelector('select'); if(sel) sel.value='';
    const sd = tr.querySelector('.sub-display'); if(sd) sd.textContent='Rp 0';
    if(window.numFmtInitAll) window.numFmtInitAll();
  } else {
    tr.remove();
  }
  hitungTotal();
}
document.addEventListener('DOMContentLoaded', function(){
  document.querySelectorAll('#form-umum input,#form-umum select,#form-produk input,#form-produk select').forEach(el=>{
    el.addEventListener('input', updateReturPreview);
    el.addEventListener('change', updateReturPreview);
  });
  updateReturPreview();
});
</script>

</div>
</div>
{% endblock %}