@extends('dashboard.layouts.app')

@section('content')
    <!-- Success/Error Messages -->
    @if (session('success'))
        <div class="alert alert-success alert-dismissible fade show" role="alert">
            {{ session('success') }}
            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        </div>
    @endif

    @if ($errors->any())
        <div class="alert alert-danger alert-dismissible fade show" role="alert">
            <ul>
                @foreach ($errors->all() as $error)
                    <li>{{ $error }}</li>
                @endforeach
            </ul>
            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        </div>
    @endif
    <div class="container-fluid">
        <div class="row">
            <div class="col-12">
                <div class="card h-100 border-0 shadow-sm overflow-hidden p-3">
                    <div
                        class="card-header border-bottom py-3 px-5 d-flex align-items-center flex-wrap justify-content-between gap-3">

                        <x-table-controls :action="route('expenses.index')" :export="true" :date="true"
                            :exportRoute="route('expenses.export')" />

                        <x-table-action type="create" target="#createExpenseModal" class="d-flex align-items-center gap-2" />
                    </div>

                    <x-table :headers="['Index', 'Name', 'Date', 'Type', 'Posting', 'Amount', 'File', 'Description', 'Actions']">
                        @forelse ($expenses as $invoice)
                            <tr>
                                <td>{{ $loop->iteration }}</td>
                                <td>{{ $invoice->name ?? '' }}</td>
                                <td>{{ $invoice->date ?? '' }}</td>
                                <td>{{ $invoice->expenseHead->name ?? '' }}</td>
                                <td>
                                    @php $status = $invoice->posting_status ?? 'posted'; @endphp
                                    <span class="badge {{ $status === 'draft' ? 'bg-warning text-dark' : 'bg-success' }}">
                                        {{ ucfirst($status) }}
                                    </span>
                                </td>
                                <td>{{ $invoice->amount ?? ''}}</td>
                                <td><img width="50px" height="50px" src="{{ asset($invoice->file) }}" alt=""
                                        class="img-fluid"></td>
                                <td>{{ $invoice->description ?? '' }}</td>
                                <td>
                                    <!-- Edit Button -->
                                    <x-table-action type="edit" :target="'#editExpenseModal' . $invoice->id" />
                                    <!-- Delete Button -->
                                    <x-table-action type="delete" :target="'#deleteExpenseModal' . $invoice->id" />
                                </td>
                            </tr>
                        @empty
                            <tr>
                                <td colspan="9" class="text-center">No Expenses found.</td>
                            </tr>
                        @endforelse
                    </x-table>

                    <div class="m-2">
                        <div>
                            {{ $expenses->appends(request()->except('page'))->links('pagination::bootstrap-5') }}
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Create Modal -->
    <div class="modal fade" id="createExpenseModal" tabindex="-1" aria-labelledby="createExpenseModalLabel"
        aria-hidden="true">
        <div class="modal-dialog">
            <form action="{{ route('expenses.store') }}" method="POST" enctype="multipart/form-data">
                @csrf
                <div class="modal-content">
                    <div class="modal-header">
                        <h5 class="modal-title" id="createExpenseModalLabel">Add Transaction</h5>
                        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                    </div>
                    <div class="modal-body">
                        <div class="mb-3">
                            <label for="name" class="form-label">Reference (Optional)</label>
                            <input type="text" name="name" class="form-control" value="{{ old('name') }}"
                                placeholder="Auto-generated if left blank">
                        </div>

                        <div class="mb-3">
                            <label class="form-label">Transaction Type</label>
                            <select class="form-control js-searchable" name="transaction_type" id="transactionTypeSelect" required>
                                <option value="expense" {{ old('transaction_type', 'expense') === 'expense' ? 'selected' : '' }}>Expense</option>
                                <option value="treasury_transfer" {{ old('transaction_type') === 'treasury_transfer' ? 'selected' : '' }}>Transfer</option>
                            </select>
                        </div>

                        <div class="mb-3">
                            <label for="expense_head_id" class="form-label">Expense Account <span class="text-danger">*</span></label>
                            <select class="form-control js-searchable" name="expense_head_id" id="expenseHeadSelect" required>
                                <option value="" selected disabled>Select</option>
                                @foreach ($expensesHead as $item)
                                    <option value="{{ $item->id }}" {{ old('expense_head_id') == $item->id ? 'selected' : '' }}>
                                        {{ $item->name }}
                                    </option>
                                @endforeach
                            </select>
                        </div>

                        <div class="mb-3">
                            <label for="date" class="form-label">Transaction Date <span class="text-danger">*</span></label>
                            <input type="date" name="date" class="form-control" value="{{ old('date') }}" required>
                        </div>

                        <div class="mb-3">
                            <label for="amount" class="form-label">Amount <span class="text-danger">*</span></label>
                            <input type="text" class="form-control" id="expenseAmountDisplay"
                                value="{{ old('amount') }}" placeholder="0.00" required>
                            <input type="hidden" name="amount" id="expenseAmountRaw" value="{{ old('amount') }}">
                        </div>

                        <div class="mb-3">
                            <label for="cost_center_id" class="form-label">Cost Center <span class="text-danger">*</span></label>
                            <select class="form-control js-searchable" name="cost_center_id" required>
                                <option value="" selected>Select</option>
                                @foreach ($costCenters as $item)
                                    <option value="{{ $item->id }}"
                                        {{ old('cost_center_id') == $item->id ? 'selected' : '' }}>
                                        {{ $item->title }}
                                    </option>
                                @endforeach
                            </select>
                        </div>

                        <div class="mb-3">
                            <label for="treasury_id" class="form-label">Treasury <span class="text-danger">*</span></label>
                            <select class="form-control js-searchable" name="treasury_id" id="treasurySelect" required>
                                <option value="" selected>Select</option>
                                @foreach ($treasuries as $item)
                                    <option value="{{ $item->id }}"
                                        {{ old('treasury_id') == $item->id ? 'selected' : '' }}>
                                        {{ $item->name }}
                                    </option>
                                @endforeach
                            </select>
                        </div>

                        <div class="mb-3">
                            <label for="file" class="form-label">Attachment</label>
                            <input type="file" name="file" class="form-control" accept=".jpg,.jpeg,.png,.pdf,.doc,.docx">
                        </div>

                        <div class="mb-3">
                            <label for="description" class="form-label">Description <span
                                    class="text-danger">*</span></label>
                            <textarea name="description" class="form-control">{{ old('description') }}</textarea>
                        </div>

                        <div class="mb-0 border rounded p-3 bg-light-subtle">
                            <div class="fw-semibold mb-2">Journal Entry Preview</div>
                            <div class="d-flex justify-content-between">
                                <span>Debit: <span id="previewDebitAccount">Expense Account</span></span>
                                <span id="previewDebitAmount">0.00</span>
                            </div>
                            <div class="d-flex justify-content-between">
                                <span>Credit: <span id="previewCreditAccount">Treasury Account</span></span>
                                <span id="previewCreditAmount">0.00</span>
                            </div>
                        </div>

                        <input type="hidden" name="created_by" value="{{ auth()->id() }}">

                    </div>
                    <div class="modal-footer">
                        <button type="submit" name="submit_action" value="draft" class="btn btn-outline-secondary">Save Draft</button>
                        <button type="submit" name="submit_action" value="post" class="btn btn-outline-primary">Post Now</button>
                    </div>
                </div>
            </form>
        </div>
    </div>

    @foreach ($expenses as $expense)
        <div class="modal fade" id="editExpenseModal{{ $expense->id }}" tabindex="-1"
            aria-labelledby="editExpenseModalLabel{{ $expense->id }}" aria-hidden="true">
            <div class="modal-dialog">
                <form action="{{ route('expenses.update', $expense->id) }}" method="POST" enctype="multipart/form-data">
                    @csrf
                    @method('PUT')
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 class="modal-title" id="editExpenseModalLabel{{ $expense->id }}">Edit Expense</h5>
                            <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                        </div>
                        <div class="modal-body">
                            <div class="mb-3">
                                <label for="name" class="form-label">Name <span class="text-danger">*</span></label>
                                <input type="text" name="name" class="form-control"
                                    value="{{ old('name', $expense->name ?? '') }}" required>
                            </div>

                            <div class="mb-3">
                                <label for="expense_head_id" class="form-label">Type <span class="text-danger">*</span></label>
                                <select class="form-control" name="expense_head_id" required>
                                    @foreach ($expensesHead as $item)
                                        <option value="{{ $item->id }}" @if ($item->id == $expense->expense_head_id) selected @endif>
                                            {{ $item->name }}
                                        </option>
                                    @endforeach
                                </select>
                            </div>

                            <div class="mb-3">
                                <label for="date" class="form-label">Date <span class="text-danger">*</span></label>
                                <input type="date" name="date" class="form-control"
                                    value="{{ old('date', $expense->date ?? '') }}" required>
                            </div>
                            <div class="mb-3">
                                <label for="amount" class="form-label">Amount <span class="text-danger">*</span></label>
                                <input type="number" name="amount" class="form-control"
                                    value="{{ old('amount', $expense->amount ?? '') }}" required>
                            </div>

                            <div class="mb-3">
                                <label for="cost_center_id" class="form-label">Cost Center <span class="text-danger">*</span></label>
                                <select class="form-control" name="cost_center_id" required>
                                    <option value="">Select</option>
                                    @foreach ($costCenters as $item)
                                        <option value="{{ $item->id }}" @selected(old('cost_center_id', $expense->cost_center_id ?? null) == $item->id)>
                                            {{ $item->title }}
                                        </option>
                                    @endforeach
                                </select>
                            </div>

                            <div class="mb-3">
                                <label for="file" class="form-label">File <span class="text-danger">*</span></label>
                                <input type="file" name="file" class="form-control">

                                @if (isset($expense) && $expense->file)
                                    <a href="{{ asset($expense->file) }}" target="_blank">View File</a>
                                @endif
                            </div>

                            <div class="mb-3">
                                <label for="description" class="form-label">Description <span
                                        class="text-danger">*</span></label>
                                <textarea name="description"
                                    class="form-control">{{ old('description', $expense->description ?? '') }}</textarea>
                            </div>

                            <input type="hidden" name="created_by" value="{{ auth()->id() }}">

                        </div>
                        <div class="modal-footer">
                            <button type=" submit" class="btn btn-outline-success">Update</button>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    @endforeach

    @foreach ($expenses as $expense)
        <div class="modal fade" id="deleteExpenseModal{{ $expense->id }}" tabindex="-1"
            aria-labelledby="deleteExpenseLabel{{ $expense->id }}" aria-hidden="true">
            <div class="modal-dialog">
                <form action="{{ route('expenses.destroy', $expense->id) }}" method="POST">
                    @csrf
                    @method('DELETE')
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 class="modal-title" id="deleteExpenseLabel{{ $expense->id }}">Delete Expense</h5>
                            <button type="button" class="btn-close" data-bs-dismiss="modal"></button>

                        </div>
                        <div class="modal-body">
                            Are you sure you want to delete this expense?
                        </div>
                        <div class="modal-footer">
                            <button type="submit" class="btn btn-outline-danger">Delete</button>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    @endforeach

@endsection

@push('scripts')
<script>
    (function () {
        function toRawAmount(value) {
            const cleaned = (value || '').toString().replace(/[^\d.]/g, '');
            const parsed = parseFloat(cleaned);
            return Number.isFinite(parsed) ? parsed : 0;
        }

        function formatCurrency(value) {
            return new Intl.NumberFormat('en-US', {
                minimumFractionDigits: 2,
                maximumFractionDigits: 2
            }).format(value || 0);
        }

        function updatePreview() {
            const amountRawInput = document.getElementById('expenseAmountRaw');
            const amount = toRawAmount(amountRawInput ? amountRawInput.value : '0');
            const debitAmountEl = document.getElementById('previewDebitAmount');
            const creditAmountEl = document.getElementById('previewCreditAmount');
            const debitAccountEl = document.getElementById('previewDebitAccount');
            const creditAccountEl = document.getElementById('previewCreditAccount');
            const expenseHeadSelect = document.getElementById('expenseHeadSelect');
            const treasurySelect = document.getElementById('treasurySelect');

            if (debitAmountEl) debitAmountEl.textContent = formatCurrency(amount);
            if (creditAmountEl) creditAmountEl.textContent = formatCurrency(amount);
            if (debitAccountEl) {
                debitAccountEl.textContent = expenseHeadSelect && expenseHeadSelect.selectedIndex > 0
                    ? expenseHeadSelect.options[expenseHeadSelect.selectedIndex].text
                    : 'Expense Account';
            }
            if (creditAccountEl) {
                creditAccountEl.textContent = treasurySelect && treasurySelect.selectedIndex > 0
                    ? treasurySelect.options[treasurySelect.selectedIndex].text
                    : 'Treasury Account';
            }
        }

        document.addEventListener('DOMContentLoaded', function () {
            if (window.jQuery && jQuery.fn.select2) {
                $('.js-searchable').select2({
                    dropdownParent: $('#createExpenseModal'),
                    width: '100%'
                });
            }

            const amountDisplay = document.getElementById('expenseAmountDisplay');
            const amountRaw = document.getElementById('expenseAmountRaw');
            const expenseHeadSelect = document.getElementById('expenseHeadSelect');
            const treasurySelect = document.getElementById('treasurySelect');
            const createExpenseModal = document.getElementById('createExpenseModal');

            if (amountDisplay && amountRaw) {
                amountDisplay.addEventListener('input', function (e) {
                    const raw = toRawAmount(e.target.value);
                    amountRaw.value = raw ? raw.toFixed(2) : '';
                    updatePreview();
                });

                amountDisplay.addEventListener('blur', function () {
                    const raw = toRawAmount(amountRaw.value);
                    amountDisplay.value = raw ? formatCurrency(raw) : '';
                    updatePreview();
                });

                const initialRaw = toRawAmount(amountRaw.value || amountDisplay.value);
                if (initialRaw) {
                    amountRaw.value = initialRaw.toFixed(2);
                    amountDisplay.value = formatCurrency(initialRaw);
                }
            }

            if (expenseHeadSelect) {
                expenseHeadSelect.addEventListener('change', updatePreview);
            }
            if (treasurySelect) {
                treasurySelect.addEventListener('change', updatePreview);
            }

            if (createExpenseModal) {
                createExpenseModal.addEventListener('shown.bs.modal', updatePreview);
            }

            updatePreview();
        });
    })();
</script>
@endpush