@extends('layouts.master')

@section('page_title', 'Create Voucher')

@section('content')
<div class="container">
    <div class="row">
        <div class="col-md-10 offset-md-1">
            <div class="card">
                <div class="card-header">
                    <h4>Create New Voucher</h4>
                </div>
                <div class="card-body">
                    <form action="{{ route('vouchers.store') }}" method="POST">
                        @csrf
                        
                        <div class="row">
                            <div class="col-md-4">
                                <div class="mb-3">
                                    <label for="voucher_number" class="form-label">Voucher Number *</label>
                                    <input type="text" class="form-control @error('voucher_number') is-invalid @enderror" 
                                           id="voucher_number" name="voucher_number" value="{{ old('voucher_number') }}" required>
                                    @error('voucher_number')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-4">
                                <div class="mb-3">
                                    <label for="voucher_date" class="form-label">Voucher Date *</label>
                                    <input type="date" class="form-control @error('voucher_date') is-invalid @enderror" 
                                           id="voucher_date" name="voucher_date" value="{{ old('voucher_date', date('Y-m-d')) }}" required>
                                    @error('voucher_date')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-4">
                                <div class="mb-3">
                                    <label for="voucher_type" class="form-label">Voucher Type *</label>
                                    <select class="form-select @error('voucher_type') is-invalid @enderror" 
                                            id="voucher_type" name="voucher_type" required>
                                        <option value="">Select Type</option>
                                        <option value="payment" {{ old('voucher_type') == 'payment' ? 'selected' : '' }}>Payment Voucher</option>
                                        <option value="receipt" {{ old('voucher_type') == 'receipt' ? 'selected' : '' }}>Receipt Voucher</option>
                                        <option value="journal" {{ old('voucher_type') == 'journal' ? 'selected' : '' }}>Journal Voucher</option>
                                        <option value="contra" {{ old('voucher_type') == 'contra' ? 'selected' : '' }}>Contra Voucher</option>
                                    </select>
                                    @error('voucher_type')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                        </div>

                        <div class="row">
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label for="reference" class="form-label">Reference</label>
                                    <input type="text" class="form-control @error('reference') is-invalid @enderror" 
                                           id="reference" name="reference" value="{{ old('reference') }}">
                                    @error('reference')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="mb-3">
                                    <label for="payee" class="form-label">Payee/Payer</label>
                                    <input type="text" class="form-control @error('payee') is-invalid @enderror" 
                                           id="payee" name="payee" value="{{ old('payee') }}">
                                    @error('payee')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                        </div>

                        <div class="mb-3">
                            <label for="description" class="form-label">Description *</label>
                            <textarea class="form-control @error('description') is-invalid @enderror" 
                                      id="description" name="description" rows="3" required>{{ old('description') }}</textarea>
                            @error('description')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <hr>
                        
                        <h5>Voucher Lines</h5>
                        <div id="voucher-lines">
                            <div class="voucher-line mb-3 border p-3 rounded">
                                <div class="row">
                                    <div class="col-md-5">
                                        <label class="form-label">Account *</label>
                                        <select class="form-select" name="lines[0][account_id]" required>
                                            <option value="">Select Account</option>
                                            @if(isset($accounts))
                                                @foreach($accounts as $account)
                                                    <option value="{{ $account->id }}">{{ $account->name }} ({{ $account->account_code }})</option>
                                                @endforeach
                                            @endif
                                        </select>
                                    </div>
                                    <div class="col-md-3">
                                        <label class="form-label">Debit Amount</label>
                                        <input type="number" class="form-control debit-input" name="lines[0][debit_amount]" 
                                               step="0.01" min="0" value="0.00">
                                    </div>
                                    <div class="col-md-3">
                                        <label class="form-label">Credit Amount</label>
                                        <input type="number" class="form-control credit-input" name="lines[0][credit_amount]" 
                                               step="0.01" min="0" value="0.00">
                                    </div>
                                    <div class="col-md-1">
                                        <label class="form-label">&nbsp;</label>
                                        <button type="button" class="btn btn-danger btn-sm d-block remove-line" disabled>Remove</button>
                                    </div>
                                </div>
                                <div class="row mt-2">
                                    <div class="col-md-11">
                                        <label class="form-label">Line Description</label>
                                        <input type="text" class="form-control" name="lines[0][description]" placeholder="Optional line description">
                                    </div>
                                </div>
                            </div>

                            <div class="voucher-line mb-3 border p-3 rounded">
                                <div class="row">
                                    <div class="col-md-5">
                                        <label class="form-label">Account *</label>
                                        <select class="form-select" name="lines[1][account_id]" required>
                                            <option value="">Select Account</option>
                                            @if(isset($accounts))
                                                @foreach($accounts as $account)
                                                    <option value="{{ $account->id }}">{{ $account->name }} ({{ $account->account_code }})</option>
                                                @endforeach
                                            @endif
                                        </select>
                                    </div>
                                    <div class="col-md-3">
                                        <label class="form-label">Debit Amount</label>
                                        <input type="number" class="form-control debit-input" name="lines[1][debit_amount]" 
                                               step="0.01" min="0" value="0.00">
                                    </div>
                                    <div class="col-md-3">
                                        <label class="form-label">Credit Amount</label>
                                        <input type="number" class="form-control credit-input" name="lines[1][credit_amount]" 
                                               step="0.01" min="0" value="0.00">
                                    </div>
                                    <div class="col-md-1">
                                        <label class="form-label">&nbsp;</label>
                                        <button type="button" class="btn btn-danger btn-sm d-block remove-line" disabled>Remove</button>
                                    </div>
                                </div>
                                <div class="row mt-2">
                                    <div class="col-md-11">
                                        <label class="form-label">Line Description</label>
                                        <input type="text" class="form-control" name="lines[1][description]" placeholder="Optional line description">
                                    </div>
                                </div>
                            </div>
                        </div>

                        <div class="mb-3">
                            <button type="button" id="add-line" class="btn btn-secondary">Add Line</button>
                        </div>

                        <div class="row">
                            <div class="col-md-4">
                                <div class="alert alert-info">
                                    <strong>Total Debits:</strong> <span id="total-debits">0.00</span>
                                </div>
                            </div>
                            <div class="col-md-4">
                                <div class="alert alert-info">
                                    <strong>Total Credits:</strong> <span id="total-credits">0.00</span>
                                </div>
                            </div>
                            <div class="col-md-4">
                                <div class="alert alert-warning" id="balance-warning" style="display: none;">
                                    <strong>Warning:</strong> Debits and Credits must be equal!
                                </div>
                            </div>
                        </div>

                        <div class="mb-3">
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="auto_approve" name="auto_approve" value="1">
                                <label class="form-check-label" for="auto_approve">
                                    Auto-approve this voucher
                                </label>
                            </div>
                        </div>

                        <div class="d-flex justify-content-between">
                            <a href="{{ route('vouchers.index') }}" class="btn btn-secondary">Cancel</a>
                            <button type="submit" class="btn btn-primary" id="submit-btn">Create Voucher</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
document.addEventListener('DOMContentLoaded', function() {
    let lineIndex = 2;
    
    // Add new line functionality
    document.getElementById('add-line').addEventListener('click', function() {
        const container = document.getElementById('voucher-lines');
        const newLine = createVoucherLine(lineIndex);
        container.appendChild(newLine);
        lineIndex++;
        updateRemoveButtons();
        calculateTotals();
    });
    
    // Remove line functionality
    document.addEventListener('click', function(e) {
        if (e.target.classList.contains('remove-line')) {
            e.target.closest('.voucher-line').remove();
            updateRemoveButtons();
            calculateTotals();
        }
    });
    
    // Calculate totals when amounts change
    document.addEventListener('input', function(e) {
        if (e.target.classList.contains('debit-input') || e.target.classList.contains('credit-input')) {
            calculateTotals();
        }
    });
    
    function createVoucherLine(index) {
        const div = document.createElement('div');
        div.className = 'voucher-line mb-3 border p-3 rounded';
        div.innerHTML = `
            <div class="row">
                <div class="col-md-5">
                    <label class="form-label">Account *</label>
                    <select class="form-select" name="lines[${index}][account_id]" required>
                        <option value="">Select Account</option>
                        @if(isset($accounts))
                            @foreach($accounts as $account)
                                <option value="{{ $account->id }}">{{ $account->name }} ({{ $account->code }})</option>
                            @endforeach
                        @endif
                    </select>
                </div>
                <div class="col-md-3">
                    <label class="form-label">Debit Amount</label>
                    <input type="number" class="form-control debit-input" name="lines[${index}][debit_amount]" 
                           step="0.01" min="0" value="0.00">
                </div>
                <div class="col-md-3">
                    <label class="form-label">Credit Amount</label>
                    <input type="number" class="form-control credit-input" name="lines[${index}][credit_amount]" 
                           step="0.01" min="0" value="0.00">
                </div>
                <div class="col-md-1">
                    <label class="form-label">&nbsp;</label>
                    <button type="button" class="btn btn-danger btn-sm d-block remove-line">Remove</button>
                </div>
            </div>
            <div class="row mt-2">
                <div class="col-md-11">
                    <label class="form-label">Line Description</label>
                    <input type="text" class="form-control" name="lines[${index}][description]" placeholder="Optional line description">
                </div>
            </div>
        `;
        return div;
    }
    
    function updateRemoveButtons() {
        const lines = document.querySelectorAll('.voucher-line');
        lines.forEach((line, index) => {
            const removeBtn = line.querySelector('.remove-line');
            removeBtn.disabled = lines.length <= 2;
        });
    }
    
    function calculateTotals() {
        let totalDebits = 0;
        let totalCredits = 0;
        
        document.querySelectorAll('.debit-input').forEach(input => {
            totalDebits += parseFloat(input.value) || 0;
        });
        
        document.querySelectorAll('.credit-input').forEach(input => {
            totalCredits += parseFloat(input.value) || 0;
        });
        
        document.getElementById('total-debits').textContent = totalDebits.toFixed(2);
        document.getElementById('total-credits').textContent = totalCredits.toFixed(2);
        
        // Check if balanced
        const isBalanced = Math.abs(totalDebits - totalCredits) < 0.01;
        const warningDiv = document.getElementById('balance-warning');
        const submitBtn = document.getElementById('submit-btn');
        
        if (!isBalanced && (totalDebits > 0 || totalCredits > 0)) {
            warningDiv.style.display = 'block';
            submitBtn.disabled = true;
        } else {
            warningDiv.style.display = 'none';
            submitBtn.disabled = false;
        }
    }
    
    // Initial calculation
    calculateTotals();
    updateRemoveButtons();
});
</script>
@endsection