@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" enctype="multipart/form-data">
                @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="hidden" :name="`items[${index}][unit_price]`" :value="item.unit_price">
                                        <input type="text"
                                            :value="item.unit_price ? formatNum(item.unit_price) : ''"
                                            @input="
                                                let raw = $event.target.value.replace(/\D/g, '');
                                                item.unit_price = raw ? parseInt(raw, 10) : 0;
                                                $event.target.value = item.unit_price ? formatNum(item.unit_price) : '';
                                                recalc();
                                            "
                                            class="input-soft text-sm bg-white" placeholder="0">
                                    </div>
                                    <div class="w-24 shrink-0 text-right">
                                        <label class="text-xs text-gray-400 block mb-0.5">Total</label>
                                        <div class="text-sm font-bold text-gray-700 pt-2">
                                            Rp <span x-text="formatNum(item.quantity * item.unit_price)"></span>
                                        </div>
                                    </div>
                                    <button type="button" @click="removeItem(index)"
                                        class="text-red-400 hover:text-red-600 text-lg shrink-0 pt-4">✕</button>
                                </div>
                                {{-- Taxable and Discount checkboxes --}}
                                <div class="mt-2 flex items-center gap-4">
                                    <div class="flex items-center gap-2">
                                        <input type="hidden" :name="`items[${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_${index}`"
                                            class="text-xs text-gray-500 cursor-pointer select-none">
                                            Taxable
                                        </label>
                                    </div>
                                    <div class="flex items-center gap-2" x-show="addDiscount">
                                        <input type="hidden" :name="`items[${index}][is_discountable]`" value="0">
                                        <input type="checkbox" :name="`items[${index}][is_discountable]`" :id="`discountable_${index}`"
                                            x-model="item.is_discountable" @change="recalc()" value="1"
                                            class="w-3.5 h-3.5 accent-pink-400">
                                        <label :for="`discountable_${index}`"
                                            class="text-xs text-gray-500 cursor-pointer select-none">
                                            Discount
                                        </label>
                                    </div>
                                </div>
                            </div>
                        </template>
                    </div>
                </div>

                {{-- Totals --}}
                <div class="bg-pink-50 rounded-2xl p-4 mb-5">
                    <div class="mb-3 border-b border-pink-100 pb-3 flex flex-col sm:flex-row sm:items-center gap-y-2 gap-x-4 min-h-[32px]">
                        <label class="flex items-center gap-2 cursor-pointer shrink-0 w-max">
                            <input type="checkbox" x-model="addDiscount" @change="toggleDiscount()" class="w-4 h-4 accent-pink-400">
                            <span class="text-sm font-bold text-gray-700">Add Discount</span>
                        </label>
                        <div x-show="addDiscount" class="flex items-center gap-3 flex-1 overflow-hidden" style="display: none;">
                            <input type="range" name="discount_rate" min="5" max="90" step="5" x-model.number="discountRate" @input="recalc()" class="w-32 sm:w-48 accent-pink-500 h-2 bg-pink-100 rounded-lg appearance-none cursor-pointer shrink-0 hover:accent-pink-600 transition-all">
                            <span class="font-bold text-pink-600 text-sm shrink-0 w-8 text-right"><span x-text="discountRate"></span>%</span>
                            <span class="text-xs text-pink-500 font-medium tracking-wide truncate border-l border-pink-200 pl-3" x-text="getDiscountLabel()"></span>
                        </div>
                    </div>
                
                    <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-pink-500" x-show="addDiscount && discountAmount > 0">
                        <span>Discount (<span x-text="discountRate"></span>%)</span>
                        <span class="font-semibold">- Rp <span x-text="formatNum(discountAmount)"></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>

                <div class="mb-5 flex items-center gap-2 bg-pink-50/50 p-4 rounded-2xl border border-pink-100">
                    <input type="hidden" name="use_custom_fields" value="0">
                    <input type="checkbox" id="useCustomFields" name="use_custom_fields" value="1" x-model="showCustomFields" class="w-4 h-4 text-pink-600 bg-white border-pink-300 rounded focus:ring-pink-500 cursor-pointer">
                    <label for="useCustomFields" class="text-sm font-bold text-gray-700 cursor-pointer select-none">Show Custom Bank & Signature Settings</label>
                </div>

                <div x-show="showCustomFields" x-collapse>
                    {{-- 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>

                    {{-- Custom Signature Text --}}
                    <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">Signer Name</label>
                            <input type="text" name="signer_name" value="{{ old('signer_name') }}" class="input-soft text-sm" placeholder="e.g. Cathy">
                        </div>
                        <div>
                            <label class="block text-xs font-semibold text-gray-600 mb-1">Signer Title</label>
                            <input type="text" name="signer_title" value="{{ old('signer_title') }}" class="input-soft text-sm" placeholder="e.g. Director">
                        </div>
                    </div>

                    <div class="mb-5">
                        <label class="block text-sm font-semibold text-gray-700 mb-1">Custom Signature Image (Optional)</label>
                        <p class="text-xs text-gray-400 mb-2">Leave blank to use your default signature from settings.</p>
                        <input type="file" name="signature_image" accept="image/*" class="w-full text-sm text-gray-600
                                                      file:mr-3 file:py-1.5 file:px-4
                                                      file:rounded-full file:border-0
                                                      file:text-xs file:font-semibold
                                                      file:bg-pink-50 file:text-pink-600
                                                      hover:file:bg-pink-100 cursor-pointer">
                    </div>
                </div>

                <div class="mb-5">
                    <label class="block text-sm font-semibold text-gray-700 mb-1">Notes / Payment Terms</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 {
                    showCustomFields: {{ old('use_custom_fields', false) ? 'true' : 'false' }},
                    addDiscount: false,
                    discountRate: 5,
                    items: [{ description: @json($invoiceSettings->default_service_description ?? ''), quantity: 1, unit_price: 0, is_taxable: true, is_discountable: false }],
                    taxRate: {{ $invoiceSettings->default_tax_rate ?? 11 }},
                    get subtotal() {
                        return this.items.reduce((s, i) => s + (i.quantity * i.unit_price), 0);
                    },
                    get discountAmount() {
                        if (!this.addDiscount) return 0;
                        const discountable = this.items
                            .filter(i => i.is_discountable)
                            .reduce((s, i) => s + (i.quantity * i.unit_price), 0);
                        return Math.round(discountable * (this.discountRate / 100));
                    },
                    get totalSubtotal() {
                        return this.subtotal - this.discountAmount;
                    },
                    get taxAmount() {
                        const taxable = this.items
                            .filter(i => i.is_taxable)
                            .reduce((s, i) => {
                                let itemTotal = i.quantity * i.unit_price;
                                if (this.addDiscount && i.is_discountable) {
                                    itemTotal -= itemTotal * (this.discountRate / 100);
                                }
                                return s + itemTotal;
                            }, 0);
                        return Math.round(taxable * this.taxRate / 100);
                    },
                    get total() { return this.totalSubtotal; }, // grand total = pre-tax
                    getDiscountLabel() {
                        const labels = {
                            5: 'Small thank-you discount 🙏',
                            10: 'Appreciation bonus ✨',
                            15: 'Loyalty perk unlocked 🤝',
                            20: 'Client appreciation deal 💼',
                            25: 'Special partner discount ⭐',
                            30: 'Valued client offer 🎯',
                            35: 'Priority client savings 📌',
                            40: 'Strong appreciation rate 💎',
                            45: 'Preferred client pricing 🏅',
                            50: 'Half-off partner special 🎉',
                            55: 'Premium loyalty reward 🧩',
                            60: 'Major appreciation offer 🚀',
                            65: 'VIP-level savings 🏆',
                            70: 'Elite client advantage 👑',
                            75: 'Strategic partner bonus 🤝✨',
                            80: 'Executive-tier discount 💼🔥',
                            85: 'Signature client reward 🖋️',
                            90: 'Ultimate partnership rate 🌟'
                        };
                        return labels[this.discountRate] || '';
                    },
                    toggleDiscount() {
                        if (this.addDiscount) {
                            this.items.forEach(i => i.is_discountable = true);
                        } else {
                            // We can leave them checked or uncheck them, usually uncheck
                            this.items.forEach(i => i.is_discountable = false);
                        }
                    },
                    addItem() { this.items.push({ description: '', quantity: 1, unit_price: 0, is_taxable: true, is_discountable: this.addDiscount }); },
                    removeItem(i) { if (this.items.length > 1) this.items.splice(i, 1); },
                    recalc() { },
                    formatNum(n) { return Number(n).toLocaleString('id-ID'); },
                };
            }
        </script>
    @endpush
@endsection