@extends('layouts.app')

@section('content')
@php
    $isEdit   = isset($mode) && $mode === 'edit';
    $editable = ($faktura->can_be_editable ?? true) && !($faktura->usunieto ?? false);

    $action = $isEdit
        ? route('faktury.update.parties', $faktura->id_faktura)
        : route('faktury.store.parties',  $faktura->id_faktura);

    $backRoute = $isEdit
        ? route('faktury.edit.header',  $faktura->id_faktura)
        : route('faktury.create.header');

    $nextLabel = $isEdit ? 'Zapisz zmiany' : 'Zapisz podmioty i przejdź dalej';
@endphp

<div class="container py-4" x-data="partiesPage({{ $editable ? 'true' : 'false' }})" x-init="showModal=false">
    <style>[x-cloak]{display:none!important}</style>

    {{-- Nagłówek --}}
    <div class="d-flex flex-wrap align-items-center justify-content-between mb-4">
        <div>
            <h2 class="h5 fw-semibold mb-1">
                {{ $isEdit ? 'Edycja faktury — Krok 2/5: Podmioty' : 'Nowa faktura — Krok 2/5: Podmioty' }}
            </h2>
            <p class="text-secondary small mb-0">
                Faktura #{{ $faktura->id_faktura }} · {{ $faktura->p_2_numer }} · {{ $faktura->p_1_data_wystawienia }}
            </p>
        </div>
        <a href="{{ $backRoute }}" class="btn btn-outline-secondary">Wróć do nagłówka</a>
    </div>

    {{-- Pasek postępu --}}
    <div class="mb-4">
        <div class="progress" style="height:8px;"><div class="progress-bar bg-primary" style="width:40%"></div></div>
        <div class="d-flex justify-content-between small text-muted mt-2">
            <span>1. Nagłówek</span>
            <span class="fw-semibold text-primary">2. Podmioty</span>
            <span>3. Pozycje</span>
            <span>4. Płatności</span>
            <span>5. Podsumowanie</span>
        </div>
    </div>

    {{-- Komunikaty --}}
    @if (!$editable)
        <div class="alert alert-info">
            Ta faktura jest {{ $faktura->usunieto ? 'oznaczona jako usunięta' : 'zatwierdzona' }} — edycja zablokowana. Pola są tylko do podglądu.
        </div>
    @endif
    @if (session('success')) <div class="alert alert-success">{{ session('success') }}</div> @endif
    @if ($errors->any())
        <div class="alert alert-danger">
            <ul class="mb-0 ps-3">@foreach ($errors->all() as $e) <li>{{ $e }}</li> @endforeach</ul>
        </div>
    @endif

    {{-- Szybkie akcje --}}
    <div class="glass-card mb-4 p-3">
        <div class="small text-muted mb-2">Szybkie uzupełnianie z kartoteki kontrahentów:</div>
        <div class="d-flex flex-wrap gap-2">
            <button type="button" class="btn btn-primary btn-sm" @click="openModal('podmiot1')" :disabled="!editable">Wybierz dla Wystawcy</button>
            <button type="button" class="btn btn-primary btn-sm" @click="openModal('podmiot2')" :disabled="!editable">Wybierz dla Nabywcy</button>
            <button type="button" class="btn btn-primary btn-sm" @click="p3=true; openModal('podmiot3')" :disabled="!editable">Wybierz dla Podmiot 3</button>
            <button type="button" class="btn btn-primary btn-sm" @click="upow=true; openModal('upowazniony')" :disabled="!editable">Wybierz dla Upoważnionego</button>
        </div>
    </div>

    <form method="POST" action="{{ $action }}">
        @csrf
        @if($isEdit) @method('PATCH') @endif

        {{-- WYSTAWCA --}}
        <div class="card glass-card mb-4 shadow-sm">
            <div class="card-header d-flex justify-content-between align-items-center bg-transparent border-bottom">
                <div>
                    <h5 class="mb-0">Podmiot 1 — Wystawca</h5>
                    <small class="text-muted">Wymagane: Kod kraju + Adres L1. Identyfikacja: NIP / (KodUE+NrVATUE) / NrID.</small>
                </div>
                <button type="button" class="btn btn-primary btn-sm" @click="openModal('podmiot1')" :disabled="!editable">Z kontrahentów</button>
            </div>
            <div class="card-body">
                @php $p = $faktura->podmiot1; @endphp
                <div class="row g-3">
                    <div class="col-md-3"><label class="form-label small">NIP</label>
                        <input name="podmiot1[nip]" value="{{ old('podmiot1.nip', $p->nip ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-2"><label class="form-label small">Kod UE</label>
                        <input name="podmiot1[kod_ue]" value="{{ old('podmiot1.kod_ue', $p->kod_ue ?? '') }}" class="form-control form-control-sm" placeholder="PL" @disabled(!$editable)>
                    </div>
                    <div class="col-md-3"><label class="form-label small">Nr VAT UE</label>
                        <input name="podmiot1[nr_vat_ue]" value="{{ old('podmiot1.nr_vat_ue', $p->nr_vat_ue ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Nr ID</label>
                        <input name="podmiot1[nrid]" value="{{ old('podmiot1.nrid', $p->nrid ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>

                    <div class="col-md-4"><label class="form-label small">Nazwa</label>
                        <input name="podmiot1[nazwa]" value="{{ old('podmiot1.nazwa', $p->nazwa ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                        <div class="form-text">Lub wypełnij Imię + Nazwisko</div>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Imię</label>
                        <input name="podmiot1[imie]" value="{{ old('podmiot1.imie', $p->imie ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Nazwisko</label>
                        <input name="podmiot1[nazwisko]" value="{{ old('podmiot1.nazwisko', $p->nazwisko ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>

                    <div class="col-md-2"><label class="form-label small">Kod kraju</label>
                        <input name="podmiot1[kod_kraju]" value="{{ old('podmiot1.kod_kraju', $p->kod_kraju ?? 'PL') }}" class="form-control form-control-sm" @disabled(!$editable) required>
                    </div>
                    <div class="col-md-10"><label class="form-label small">Adres (Adres L1)</label>
                        <input name="podmiot1[adres_l1]" value="{{ old('podmiot1.adres_l1', $p->adres_l1 ?? '') }}" class="form-control form-control-sm" @disabled(!$editable) required>
                    </div>

                    <div class="col-md-6"><label class="form-label small">E-mail</label>
                        <input name="podmiot1[email]" value="{{ old('podmiot1.email', $p->email ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-6"><label class="form-label small">Telefon</label>
                        <input name="podmiot1[telefon]" value="{{ old('podmiot1.telefon', $p->telefon ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                </div>
            </div>
        </div>

        {{-- NABYWCA --}}
        <div class="card glass-card mb-4 shadow-sm">
            <div class="card-header d-flex justify-content-between align-items-center bg-transparent border-bottom">
                <div>
                    <h5 class="mb-0">Podmiot 2 — Nabywca</h5>
                    <small class="text-muted">Analogiczna identyfikacja jak wyżej.</small>
                </div>
                <button type="button" class="btn btn-primary btn-sm" @click="openModal('podmiot2')" :disabled="!editable">Z kontrahentów</button>
            </div>
            <div class="card-body">
                @php $p = $faktura->podmiot2; @endphp
                <div class="row g-3">
                    <div class="col-md-3"><label class="form-label small">NIP</label>
                        <input name="podmiot2[nip]" value="{{ old('podmiot2.nip', $p->nip ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-2"><label class="form-label small">Kod UE</label>
                        <input name="podmiot2[kod_ue]" value="{{ old('podmiot2.kod_ue', $p->kod_ue ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-3"><label class="form-label small">Nr VAT UE</label>
                        <input name="podmiot2[nr_vat_ue]" value="{{ old('podmiot2.nr_vat_ue', $p->nr_vat_ue ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Nr ID</label>
                        <input name="podmiot2[nrid]" value="{{ old('podmiot2.nrid', $p->nrid ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>

                    <div class="col-md-4"><label class="form-label small">Nazwa</label>
                        <input name="podmiot2[nazwa]" value="{{ old('podmiot2.nazwa', $p->nazwa ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Imię</label>
                        <input name="podmiot2[imie]" value="{{ old('podmiot2.imie', $p->imie ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-4"><label class="form-label small">Nazwisko</label>
                        <input name="podmiot2[nazwisko]" value="{{ old('podmiot2.nazwisko', $p->nazwisko ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>

                    <div class="col-md-2"><label class="form-label small">Kod kraju</label>
                        <input name="podmiot2[kod_kraju]" value="{{ old('podmiot2.kod_kraju', $p->kod_kraju ?? 'PL') }}" class="form-control form-control-sm" @disabled(!$editable) required>
                    </div>
                    <div class="col-md-10"><label class="form-label small">Adres (Adres L1)</label>
                        <input name="podmiot2[adres_l1]" value="{{ old('podmiot2.adres_l1', $p->adres_l1 ?? '') }}" class="form-control form-control-sm" @disabled(!$editable) required>
                    </div>

                    <div class="col-md-6"><label class="form-label small">E-mail</label>
                        <input name="podmiot2[email]" value="{{ old('podmiot2.email', $p->email ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                    <div class="col-md-6"><label class="form-label small">Telefon</label>
                        <input name="podmiot2[telefon]" value="{{ old('podmiot2.telefon', $p->telefon ?? '') }}" class="form-control form-control-sm" @disabled(!$editable)>
                    </div>
                </div>
            </div>
        </div>

        {{-- DODATKOWE PODMIOTY --}}
        <div class="card glass-card mb-4 shadow-sm">
            <div class="card-header d-flex justify-content-between align-items-center bg-transparent border-bottom">
                <h5 class="mb-0">Dodatkowe podmioty (opcjonalne)</h5>
                <div class="d-flex gap-2">
                    <button type="button" class="btn btn-outline-primary btn-sm" @click="toggleP3()" :disabled="!editable">
                        <span x-show="!p3">+ Podmiot 3</span><span x-show="p3">− Podmiot 3</span>
                    </button>
                    <button type="button" class="btn btn-outline-primary btn-sm" @click="toggleUpow()" :disabled="!editable">
                        <span x-show="!upow">+ Upoważniony</span><span x-show="upow">− Upoważniony</span>
                    </button>
                </div>
            </div>
            <div class="card-body">
                @php $p3m = $faktura->podmiot3; @endphp
                <div class="border rounded p-3 mb-3" x-show="p3" x-cloak>
                    <div class="d-flex justify-content-between align-items-center mb-2">
                        <h6 class="mb-0">Podmiot 3</h6>
                        <button type="button" class="btn btn-primary btn-sm" @click="openModal('podmiot3')" :disabled="!editable">Z kontrahentów</button>
                    </div>
                    <div class="row g-3">
                        <div class="col-md-3"><input name="podmiot3[nip]" value="{{ old('podmiot3.nip', $p3m->nip ?? '') }}" class="form-control form-control-sm" placeholder="NIP" @disabled(!$editable)></div>
                        <div class="col-md-3"><input name="podmiot3[kod_ue]" value="{{ old('podmiot3.kod_ue', $p3m->kod_ue ?? '') }}" class="form-control form-control-sm" placeholder="Kod UE" @disabled(!$editable)></div>
                        <div class="col-md-6"><input name="podmiot3[adres_l1]" value="{{ old('podmiot3.adres_l1', $p3m->adres_l1 ?? '') }}" class="form-control form-control-sm" placeholder="Adres L1" @disabled(!$editable)></div>
                    </div>
                </div>

                @php $pu = $faktura->podmiotUpowazniony; @endphp
                <div class="border rounded p-3" x-show="upow" x-cloak>
                    <div class="d-flex justify-content-between align-items-center mb-2">
                        <h6 class="mb-0">Podmiot upoważniony</h6>
                        <button type="button" class="btn btn-primary btn-sm" @click="openModal('upowazniony')" :disabled="!editable">Z kontrahentów</button>
                    </div>
                    <div class="row g-3">
                        <div class="col-md-3"><input name="upowazniony[nip]" value="{{ old('upowazniony.nip', $pu->nip ?? '') }}" class="form-control form-control-sm" placeholder="NIP" @disabled(!$editable)></div>
                        <div class="col-md-3"><input name="upowazniony[kod_ue]" value="{{ old('upowazniony.kod_ue', $pu->kod_ue ?? '') }}" class="form-control form-control-sm" placeholder="Kod UE" @disabled(!$editable)></div>
                        <div class="col-md-6"><input name="upowazniony[adres_l1]" value="{{ old('upowazniony.adres_l1', $pu->adres_l1 ?? '') }}" class="form-control form-control-sm" placeholder="Adres L1" @disabled(!$editable)></div>
                    </div>
                </div>
            </div>
        </div>

        {{-- Przyciski --}}
        <div class="d-flex justify-content-between">
            <a href="{{ $backRoute }}" class="btn btn-outline-secondary">Wstecz</a>

            @if($editable)
                <button type="submit" class="btn btn-primary">{{ $nextLabel }}</button>
            @else
                <a href="{{ route('faktury.summary', $faktura->id_faktura) }}" class="btn btn-primary">Podgląd podsumowania</a>
            @endif
        </div>
    </form>

    {{-- === MODAL: tylko gdy showModal === true === --}}
    <template x-if="showModal">
      <div
        class="position-fixed top-0 start-0 w-100 h-100 d-flex align-items-center justify-content-center"
        style="z-index:1050;"
        @keydown.escape.window="closeModal()"
      >
        {{-- Tło --}}
        <div class="position-absolute top-0 start-0 w-100 h-100 bg-dark bg-opacity-50" @click="closeModal()"></div>

        {{-- Okno --}}
        <div class="glass-card shadow-lg position-relative w-100 mx-3" style="max-width:720px;" @click.stop>
          <div class="p-3 border-bottom d-flex align-items-center justify-content-between">
            <h5 class="mb-0">
              Wybierz kontrahenta <span class="text-muted" x-text="targetLabel()"></span>
            </h5>
            <button type="button" class="btn btn-sm btn-light" @click="closeModal()">✕</button>
          </div>

          <div class="p-3">
            <div class="input-group">
              <input type="text" class="form-control" placeholder="Szukaj: nazwa / osoba / NIP"
                     x-model="query" @input.debounce.300ms="search()" :disabled="!editable">
              <button class="btn btn-primary" type="button" @click="search()" :disabled="!editable">Szukaj</button>
            </div>
            <div class="small text-muted mt-2" x-show="loading">Szukam…</div>

            <div class="list-group mt-3" x-show="results.length" style="max-height:360px; overflow:auto;">
              <template x-for="row in results" :key="row.id_kontrahent">
                <button type="button" class="list-group-item list-group-item-action" @click="pick(row)" :disabled="!editable">
                  <strong x-text="row.nazwa ?? ((row.imie ?? '')+' '+(row.nazwisko ?? ''))"></strong>
                  <div class="small text-muted"
                       x-text="row.nip ? ('NIP: '+row.nip) : (row.kod_ue && row.nr_vat_ue ? ('VAT UE: '+row.kod_ue+row.nr_vat_ue) : '')"></div>
                </button>
              </template>
            </div>

            <div class="small text-muted mt-2" x-show="!loading && !results.length && query.length">Brak wyników.</div>
          </div>

          <div class="p-3 border-top text-end">
            <button class="btn btn-outline-secondary" type="button" @click="closeModal()">Zamknij</button>
          </div>
        </div>
      </div>
    </template>

</div>

{{-- Fallback Alpine --}}
<script>
(function(){
  if (!window.Alpine) {
    var s = document.createElement('script');
    s.src = 'https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js';
    s.defer = true;
    document.head.appendChild(s);
  }
})();
</script>

{{-- Alpine logic --}}
<script>
  window.partiesPage = function (editable = true) {
    return {
      p3: {{ $faktura->podmiot3 ? 'true' : 'false' }},
      upow: {{ $faktura->podmiotUpowazniony ? 'true' : 'false' }},
      showModal: false,
      target: null,
      query: '',
      loading: false,
      results: [],
      editable: !!editable,

      openModal(pfx) {
        if(!this.editable) return;
        this.target = pfx;
        this.query = '';
        this.results = [];
        this.showModal = true;
        document.body.style.overflow = 'hidden';
      },
      closeModal() {
        this.showModal = false;
        document.body.style.overflow = '';
      },
      targetLabel() {
        return this.target === 'podmiot1' ? '(Wystawca)'
             : this.target === 'podmiot2' ? '(Nabywca)'
             : this.target === 'podmiot3' ? '(Podmiot 3)'
             : this.target === 'upowazniony' ? '(Upoważniony)' : '';
      },
      async search() {
        if(!this.editable) return;
        const q = this.query.trim();
        if (q.length < 2) { this.results = []; return; }
        this.loading = true;
        try {
          const res = await fetch(`{{ route('kontrahenci.search') }}?q=${encodeURIComponent(q)}`);
          this.results = await res.json();
        } catch (e) {
          console.error(e);
          this.results = [];
        } finally {
          this.loading = false;
        }
      },
      async pick(row) {
        if(!this.editable) return;
        try {
          const res = await fetch(`{{ url('/kontrahenci') }}/${row.id_kontrahent}.json`);
          const k = await res.json();
          this.fillParty(this.target, k);
          this.closeModal();
        } catch (e) { console.error(e); }
      },
      fillParty(pfx, k) {
        const set = (n, v) => {
          const el = document.querySelector(`[name="${pfx}[${n}]"]`);
          if (el) el.value = (v ?? '');
        };
        set('nazwa', k.nazwa);
        set('imie', k.imie);
        set('nazwisko', k.nazwisko);
        set('nip', k.nip);
        set('kod_ue', k.kod_ue);
        set('nr_vat_ue', k.nr_vat_ue);
        set('nrid', k.nrid);
        set('kod_kraju', k.kod_kraju ?? 'PL');
        set('adres_l1', k.adres_l1);
        set('adres_l2', k.adres_l2);
        set('adres_l3', k.adres_l3);
        set('adres_l4', k.adres_l4);
        set('adres_l5', k.adres_l5);
        set('email', k.email);
        set('telefon', k.telefon);

        if (pfx === 'podmiot3') this.p3 = true;
        if (pfx === 'upowazniony') this.upow = true;
      },
      toggleP3(){ if(!this.editable) return; this.p3 = !this.p3; },
      toggleUpow(){ if(!this.editable) return; this.upow = !this.upow; },
    }
  }
</script>
@endsection

@push('styles')
<style>
.glass-card{
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid rgba(20,20,40,.1);
  border-radius: 1rem;
}
@media (prefers-color-scheme: dark){
  .glass-card{ background: rgba(25,27,32,.45); border-color: rgba(255,255,255,.08); }
}
</style>
@endpush