@php
    $dispatch = $dispatch ?? null;
    $isEdit = $dispatch !== null;
@endphp

<div class="row">
    <div>
        <label for="source_warehouse_id">Source warehouse</label>
        <select name="source_warehouse_id" id="source_warehouse_id" required data-dispatch-warehouse>
            <option value="">— Select warehouse —</option>
            @foreach ($warehouses ?? [] as $warehouse)
                <option value="{{ $warehouse->id }}" @selected((string) old('source_warehouse_id', $dispatch?->source_warehouse_id) === (string) $warehouse->id)>{{ $warehouse->name }}</option>
            @endforeach
        </select>
    </div>
    <div>
        <label for="project_id">Destination project</label>
        <select name="project_id" id="project_id" required>
            <option value="">— Select project —</option>
            @foreach ($projects ?? [] as $project)
                <option value="{{ $project->id }}" @selected((string) old('project_id', $dispatch?->project_id) === (string) $project->id)>
                    {{ $project->customer_name }}@if ($project->assignedUser) — {{ $project->assignedUser->name }}@endif
                </option>
            @endforeach
        </select>
    </div>
    <div>
        <label for="project_revision_id">Project revision <span class="muted">(optional)</span></label>
        <select name="project_revision_id" id="project_revision_id">
            <option value="">— Select revision —</option>
            @foreach ($revisions ?? [] as $revision)
                <option value="{{ $revision->id }}" data-project-id="{{ $revision->project_id }}" @selected((string) old('project_revision_id', $dispatch?->project_revision_id) === (string) $revision->id)>
                    {{ $revision->project?->customer_name ?? 'Project' }} — {{ $revision->document_number }}
                </option>
            @endforeach
        </select>
    </div>
    <div>
        <label for="transaction_date">Transaction date</label>
        <input type="date" name="transaction_date" id="transaction_date" value="{{ old('transaction_date', $dispatch?->transaction_date?->toDateString() ?? now()->toDateString()) }}" required>
    </div>
    <div>
        <label for="effective_date">Effective date</label>
        <input type="date" name="effective_date" id="effective_date" value="{{ old('effective_date', $dispatch?->effective_date?->toDateString() ?? now()->toDateString()) }}" required>
    </div>
</div>

<label for="remarks">Remarks</label>
<textarea name="remarks" id="remarks">{{ old('remarks', $dispatch?->remarks) }}</textarea>

@include('admin.inventory.partials.document_average_gst_fields', ['document' => $dispatch])

@php
    $oldLines = old('lines');
    if (is_array($oldLines) && count($oldLines) > 0) {
        $lineRows = array_values($oldLines);
    } elseif ($isEdit) {
        $lineRows = $dispatch->lines->map(fn ($line) => [
            'sku_id' => $line->sku_id,
            'batch_id' => $line->batch_id,
            'qty' => $line->qty,
            'unit_id' => $line->unit_id,
            'unit_price' => $line->unit_price,
            'tax_id' => $line->tax_id,
        ])->values()->all();
    } else {
        $lineRows = [[]];
    }

    if ($lineRows === []) {
        $lineRows = [[]];
    }
@endphp

<div class="line-items" data-line-items>
    <div class="line-items-header">
        <h3>Line items</h3>
        <button type="button" class="btn btn-secondary btn-sm" data-add-line>Add line</button>
    </div>
    <div class="dispatch-line-alert is-hidden" data-dispatch-warehouse-alert role="alert">
        Select a <strong>source warehouse</strong> above before choosing SKU, batch, or available quantity on line items.
    </div>
    <div data-line-rows>
        @foreach ($lineRows as $index => $line)
            @include('admin.inventory.partials.dispatch_line', [
                'index' => $index,
                'line' => $line,
                'skus' => $skus ?? [],
                'units' => $units ?? [],
                'taxes' => $taxes ?? [],
            ])
        @endforeach
    </div>
    <template data-line-template>
        @include('admin.inventory.partials.dispatch_line', [
            'index' => 0,
            'line' => [],
            'skus' => $skus ?? [],
            'units' => $units ?? [],
            'taxes' => $taxes ?? [],
        ])
    </template>
</div>