@extends('layouts.app')

@section('title', 'New Invoice')
@section('page-title', 'Create Invoice 🧾')
@section('page-subtitle', 'Fill in the invoice details')

@section('content')
<div class="max-w-3xl mx-auto">
    <div class="cat-card p-4 lg:p-8" x-data="invoiceForm()">
        <form action="{{ route('invoices.store') }}" method="POST">
            @csrf

            {{-- Header fields --}}
            <div class="grid grid-cols-1 sm:grid-cols-2 gap-3 mb-5">
                <div class="sm:col-span-2">
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Invoice Title <span class="text-pink-400">*</span></label>
                    <input type="text" name="title" value="{{ old('title') }}" class="input-soft" required
                           placeholder="e.g. Instagram Collaboration - Brand X">
                </div>
                <div>
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Client</label>
                    <select name="client_id" class="input-soft">
                        <option value="">— No client —</option>
                        @foreach($clients as $client)
                            <option value="{{ $client->id }}" {{ request('client') == $client->id ? 'selected' : '' }}>
                                {{ $client->name }}
                            </option>
                        @endforeach
                    </select>
                </div>
                <div>
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Currency</label>
                    <select name="currency" class="input-soft">
                        @foreach(['IDR' => 'IDR (Rupiah)', 'USD' => 'USD (Dollar)', 'SGD' => 'SGD', 'MYR' => 'MYR (Ringgit)'] as $code => $label)
                            <option value="{{ $code }}" {{ old('currency', $invoiceSettings->default_currency ?? 'IDR') === $code ? 'selected' : '' }}>{{ $label }}</option>
                        @endforeach
                    </select>
                </div>
                <div>
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Issue Date</label>
                    <input type="date" name="issue_date" value="{{ old('issue_date', today()->toDateString()) }}"
                           class="input-soft" required>
                </div>
                <div>
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Due Date</label>
                    <input type="date" name="due_date"
                           value="{{ old('due_date', today()->addDays(14)->toDateString()) }}"
                           class="input-soft" required>
                </div>
                <div>
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Tax Rate (%)</label>
                    <input type="number" name="tax_rate" x-model="taxRate" @input="recalc()"
                           value="{{ old('tax_rate', $invoiceSettings->default_tax_rate ?? 11) }}" class="input-soft" step="0.01">
                </div>
            </div>

            {{-- Line Items --}}
            <div class="mb-5">
                <div class="flex items-center justify-between mb-3">
                    <h3 class="text-sm font-bold text-gray-700">Line Items</h3>
                    <button type="button" @click="addItem()" class="btn-sakura text-xs py-1.5 px-4">＋ Add Item</button>
                </div>

                <div class="space-y-2">
                    <template x-for="(item, index) in items" :key="index">
                        <div class="bg-pink-50 rounded-2xl p-3">
                            {{-- Description full width --}}
                            <input type="text" :name="`items[${index}][description]`"
                                   x-model="item.description"
                                   class="input-soft text-sm mb-2 bg-white"
                                   placeholder="Service description" required>
                            {{-- Qty / Price / Total in a row --}}
                            <div class="flex gap-2 items-center">
                                <div class="w-16 shrink-0">
                                    <label class="text-xs text-gray-400 block mb-0.5">Qty</label>
                                    <input type="number" :name="`items[${index}][quantity]`"
                                           x-model.number="item.quantity" @input="recalc()"
                                           class="input-soft text-sm text-center bg-white px-2" min="1">
                                </div>
                                <div class="flex-1">
                                    <label class="text-xs text-gray-400 block mb-0.5">Unit Price</label>
                                    <input type="number" :name="`items[${index}][unit_price]`"
                                           x-model.number="item.unit_price" @input="recalc()"
                                           class="input-soft text-sm bg-white" min="0" step="1000"
                                           placeholder="0">
                                </div>
                                <div class="w-24 shrink-0 text-right">
                                    <label class="text-xs text-gray-400 block mb-0.5">Total</label>
                                    <div class="text-sm font-bold text-gray-700 pt-2">
                                        Rp <span x-text="formatNum(item.quantity * item.unit_price)"></span>
                                    </div>
                                </div>
                                <button type="button" @click="removeItem(index)"
                                        class="text-red-400 hover:text-red-600 text-lg shrink-0 pt-4">✕</button>
                            </div>
                            {{-- Taxable checkbox --}}
                            <div class="mt-2 flex items-center gap-2">
                                <input type="hidden" :name="`items[${index}][is_taxable]`" value="0">
                                <input type="checkbox" :name="`items[${index}][is_taxable]`"
                                       :id="`taxable_${index}`"
                                       x-model="item.is_taxable" @change="recalc()"
                                       value="1"
                                       class="w-3.5 h-3.5 accent-pink-400">
                                <label :for="`taxable_${index}`" class="text-xs text-gray-500 cursor-pointer select-none">
                                    Taxable
                                </label>
                            </div>
                        </div>
                    </template>
                </div>
            </div>

            {{-- Totals --}}
            <div class="bg-pink-50 rounded-2xl p-4 mb-5">
                <div class="flex justify-between text-sm py-1">
                    <span class="text-gray-500">Subtotal (all items)</span>
                    <span class="font-semibold">Rp <span x-text="formatNum(subtotal)"></span></span>
                </div>
                <div class="flex justify-between text-sm py-1 text-amber-600">
                    <span>Tax (<span x-text="taxRate"></span>% — paid by client)</span>
                    <span class="font-semibold">Rp <span x-text="formatNum(taxAmount)"></span></span>
                </div>
                <div class="flex justify-between text-base font-bold py-2 mt-1 border-t border-pink-200">
                    <span class="text-gray-700">Grand Total</span>
                    <span class="text-pink-600">Rp <span x-text="formatNum(total)"></span></span>
                </div>
            </div>

            {{-- Bank Info --}}
            <div class="grid grid-cols-1 sm:grid-cols-2 gap-3 mb-5">
                <div>
                    <label class="block text-xs font-semibold text-gray-600 mb-1">Bank Name</label>
                    <input type="text" name="bank_name"
                           value="{{ old('bank_name', $invoiceSettings->default_bank_name) }}"
                           class="input-soft text-sm" placeholder="BCA, Mandiri...">
                </div>
                <div>
                    <label class="block text-xs font-semibold text-gray-600 mb-1">Branch Name</label>
                    <input type="text" name="branch_name"
                           value="{{ old('branch_name', $invoiceSettings->default_branch_name) }}"
                           class="input-soft text-sm" placeholder="e.g. KCP Sudirman">
                </div>
                <div>
                    <label class="block text-xs font-semibold text-gray-600 mb-1">Account Number</label>
                    <input type="text" name="bank_account"
                           value="{{ old('bank_account', $invoiceSettings->default_bank_account) }}"
                           class="input-soft text-sm">
                </div>
                <div>
                    <label class="block text-xs font-semibold text-gray-600 mb-1">Account Holder</label>
                    <input type="text" name="bank_holder"
                           value="{{ old('bank_holder', $invoiceSettings->default_bank_holder) }}"
                           class="input-soft text-sm">
                </div>
            </div>

            <div class="mb-5">
                <label class="block text-sm font-semibold text-gray-700 mb-1">Notes</label>
                <textarea name="notes" rows="2" class="input-soft resize-none"
                          placeholder="Payment terms, etc.">{{ old('notes', $invoiceSettings->default_notes) }}</textarea>
            </div>

            <div class="flex flex-col sm:flex-row gap-3">
                <button type="submit" class="btn-sakura flex-1 py-3">🧾 Create Invoice</button>
                <a href="{{ route('invoices.index') }}"
                   class="flex-1 py-3 text-center rounded-full border border-pink-200 text-gray-600 hover:bg-pink-50 font-semibold text-sm">
                    Cancel
                </a>
            </div>
        </form>
    </div>
</div>

@push('scripts')
<script>
function invoiceForm() {
    return {
        items: [{ description: @json($invoiceSettings->default_service_description ?? ''), quantity: 1, unit_price: 0, is_taxable: true }],
        taxRate: {{ $invoiceSettings->default_tax_rate ?? 11 }},
        get subtotal() {
            return this.items.reduce((s, i) => s + (i.quantity * i.unit_price), 0);
        },
        get taxAmount() {
            const taxable = this.items
                .filter(i => i.is_taxable)
                .reduce((s, i) => s + (i.quantity * i.unit_price), 0);
            return Math.round(taxable * this.taxRate / 100);
        },
        get total() { return this.subtotal; }, // grand total = pre-tax (tax borne by client)
        addItem()   { this.items.push({ description: '', quantity: 1, unit_price: 0, is_taxable: true }); },
        removeItem(i) { if (this.items.length > 1) this.items.splice(i, 1); },
        recalc()    {},
        formatNum(n) { return Number(n).toLocaleString('id-ID'); },
    };
}
</script>
@endpush
@endsection