@php
    $payment = $payment ?? null;
    $isEdit = (bool) $payment;
    $formAction = $isEdit ? route('admin.payments.update', $payment) : route('admin.payments.store');
@endphp

<form method="POST" action="{{ $formAction }}" id="payment-form" class="billing-payment-form"
    data-kind="{{ $kind }}"
    data-is-received="{{ $isReceived ? '1' : '0' }}"
    data-is-advance="{{ $isAdvance ? '1' : '0' }}"
    data-unpaid-url="{{ route('admin.payments.unpaid-documents') }}"
    data-customers='@json($customersJson ?? [])'
    data-vendors='@json($vendorsJson ?? [])'
    data-allocations='@json($allocations ?? [])'>
    @csrf
    @if($isEdit) @method('PUT') @endif
    <input type="hidden" name="kind" value="{{ $kind }}">

    <div class="billing-form-card card border-0 mb-3">
        <div class="card-body">
            <h5 class="fw-semibold mb-1">{{ $isEdit ? 'Edit' : 'Add New' }} {{ $typeLabel }}</h5>
            <p class="text-muted small mb-4">Enter payment details{{ $isAdvance ? '' : ' and apply to unpaid documents' }}.</p>

            <div class="row g-3 billing-invoice-header-grid">
                <div class="col-md-6">
                    @if($isReceived)
                        <label class="form-label">Client name <span class="text-danger">*</span></label>
                        @include('partials.admin.client-picker', [
                            'selectedCustomerId' => old('customer_id', $payment?->customer_id),
                            'customers' => $customers,
                            'placeholder' => 'Select Client',
                        ])
                    @else
                        <label class="form-label">Vendor name <span class="text-danger">*</span></label>
                        <div class="billing-client-picker billing-unit-picker billing-unit-picker--lg" data-vendor-picker data-placeholder="Select Vendor">
                            <input type="hidden" name="vendor_id" id="billing-vendor-id" data-field="vendor_id" value="{{ old('vendor_id', $payment?->vendor_id) }}" required>
                            <button type="button" class="billing-unit-picker__trigger form-select text-start" aria-haspopup="listbox">
                                <span class="billing-unit-picker__label text-truncate text-muted">Select Vendor</span>
                                <i class="ri-arrow-down-s-line billing-unit-picker__arrow"></i>
                            </button>
                            <div class="billing-unit-picker__dropdown d-none">
                                <div class="billing-unit-picker__search-wrap">
                                    <input type="text" class="form-control form-control-sm billing-unit-picker__search" placeholder="Type to search" autocomplete="off">
                                </div>
                                <ul class="billing-unit-picker__list billing-vendor-picker__list"></ul>
                            </div>
                        </div>
                    @endif
                    <div class="billing-gst-client-info card border-0 bg-light mt-2" id="payment-party-info">
                        <div class="card-body py-3 small">
                            <p class="text-muted mb-0" id="payment-party-placeholder">Select {{ $isReceived ? 'a client' : 'a vendor' }} to view billing address.</p>
                            <div id="payment-party-details" class="d-none">
                                <p class="mb-1 fw-medium" id="payment-party-billing"></p>
                                <p class="mb-0"><span class="text-muted">GSTIN:</span> <span id="payment-party-gstin">—</span></p>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="col-md-6">
                    <div class="row g-3">
                        <div class="col-md-6">
                            <label class="form-label">Number <span class="text-danger">*</span></label>
                            <div class="input-group">
                                <input type="text" name="payment_prefix" class="form-control" style="max-width:45%" value="{{ old('payment_prefix', $payment?->payment_prefix ?? $defaultPrefix) }}">
                                <input type="number" name="payment_seq" class="form-control" min="1" value="{{ old('payment_seq', $payment?->payment_seq ?? $defaultSeq) }}" required>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Date <span class="text-danger">*</span></label>
                            <input type="date" name="payment_date" class="form-control" value="{{ old('payment_date', $payment?->payment_date?->format('Y-m-d') ?? date('Y-m-d')) }}" required>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Method <span class="text-danger">*</span></label>
                            <select name="payment_method" class="form-select" required>
                                @foreach($paymentMethods as $key => $label)
                                    <option value="{{ $key }}" @selected(old('payment_method', $payment?->payment_method ?? 'cash') === $key)>{{ $label }}</option>
                                @endforeach
                            </select>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Amount <span class="text-danger">*</span></label>
                            <input type="number" step="0.01" min="0.01" name="amount" id="payment-amount" class="form-control" value="{{ old('amount', $payment?->amount ?? 0) }}" required>
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Reference #</label>
                            <input type="text" name="transaction_ref" class="form-control" value="{{ old('transaction_ref', $payment?->transaction_ref) }}" placeholder="Cheque / UTR no">
                        </div>
                        <div class="col-md-6">
                            <label class="form-label">Bank charges</label>
                            <input type="number" step="0.01" min="0" name="bank_charges" class="form-control" value="{{ old('bank_charges', $payment?->bank_charges ?? 0) }}">
                        </div>
                    </div>
                    <div class="text-end mt-3 p-3 bg-light rounded">
                        <span class="text-muted">{{ $isReceived ? 'Amount received' : 'Amount paid' }}:</span>
                        <span class="fs-5 fw-bold text-success ms-2" id="payment-amount-display">₹ 0.00</span>
                    </div>
                </div>
            </div>
        </div>
    </div>

    @if(! $isAdvance)
    <div class="billing-form-card card border-0 mb-3" id="unpaid-documents-section">
        <div class="card-body p-0">
            <div class="d-flex justify-content-between align-items-center px-3 pt-3 pb-2">
                <h6 class="fw-semibold mb-0">Unpaid documents</h6>
                <select class="form-select form-select-sm" style="max-width:160px" id="unpaid-months-filter">
                    <option value="6">Last 6 months</option>
                    <option value="12">Last 12 months</option>
                    <option value="24">Last 24 months</option>
                </select>
            </div>
            <div class="table-responsive">
                <table class="table table-bordered mb-0" id="unpaid-documents-table">
                    <thead class="table-light">
                        <tr>
                            <th>Date</th>
                            <th>Number</th>
                            <th class="text-end">Amount</th>
                            <th class="text-end">Amount due</th>
                            <th class="text-end" style="min-width:120px">Payment value</th>
                        </tr>
                    </thead>
                    <tbody id="unpaid-documents-body">
                        <tr class="text-muted"><td colspan="5" class="text-center py-4">Select {{ $isReceived ? 'a client' : 'a vendor' }} to load unpaid documents.</td></tr>
                    </tbody>
                </table>
            </div>
            <div class="px-3 py-3 border-top">
                <div class="row justify-content-end">
                    <div class="col-md-5">
                        <div class="d-flex justify-content-between mb-1">
                            <span>{{ $isReceived ? 'Amount received' : 'Amount paid' }}</span>
                            <span id="summary-amount-paid">₹ 0.00</span>
                        </div>
                        <div class="d-flex justify-content-between mb-1">
                            <span>Amount used for payments</span>
                            <span id="summary-amount-used">₹ 0.00</span>
                        </div>
                        <div class="d-flex justify-content-between fw-semibold">
                            <span>Amount in excess</span>
                            <span class="text-success" id="summary-amount-excess">₹ 0.00</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    @else
    <div class="billing-form-card card border-0 mb-3">
        <div class="card-body text-end">
            <span class="text-muted">{{ $isReceived ? 'Amount received' : 'Amount paid' }}:</span>
            <span class="fs-4 fw-bold text-success ms-2" id="payment-advance-display">₹ 0.00</span>
        </div>
    </div>
    @endif

    <div class="billing-form-card card border-0 mb-3">
        <div class="card-body">
            <label class="form-label">Memo/notes</label>
            <textarea name="notes" class="form-control" rows="4" placeholder="Additional notes">{{ old('notes', $payment?->notes) }}</textarea>
        </div>
    </div>

    <div class="billing-form-footer mt-4">
        <div class="d-flex flex-wrap gap-2">
            <button type="submit" name="save_action" value="preview" class="btn btn-success">
                <i class="ri-eye-line me-1"></i> Save &amp; View Receipt
            </button>
            <button type="submit" name="save_action" value="save" class="btn btn-outline-success">
                <i class="ri-check-line me-1"></i> Save
            </button>
            <a href="{{ route('admin.payments.index') }}" class="btn btn-light">Cancel</a>
        </div>
    </div>
</form>

@push('scripts')
@if($isReceived)
@php
    $clientsJson = $customersJson ?? [];
    $clientEditPattern = str_replace('/0/edit', '/__ID__/edit', route('admin.customers.edit', ['customer' => 0]));
@endphp
<script>
    window.__billingClients = @json($clientsJson);
    window.__billingClientEditPattern = @json($clientEditPattern);
</script>
<script src="{{ asset('js/client-picker.js') }}"></script>
@endif
<script src="{{ asset('js/payment-form.js') }}"></script>
@endpush