@extends('layouts.app')

@section('title', 'Create Bill - ISP ERP System')

@section('page-title', 'Create Bill')

@section('content')
<div class="container-fluid">
    <!-- Page Header -->
    <div class="row mb-4">
        <div class="col-12">
            <div class="card border-0 shadow-sm" style="border-radius: 15px;">
                <div class="card-header bg-white border-0" style="border-radius: 15px 15px 0 0;">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <h3 class="mb-0">
                                <i class="fas fa-file-invoice-dollar me-2 text-primary"></i>
                                Create New Bill
                            </h3>
                            <p class="mb-0 text-muted">Generate a new bill for a client</p>
                        </div>
                        <div>
                            <a href="{{ route('bills.index') }}" class="btn btn-outline-secondary">
                                <i class="fas fa-arrow-left me-2"></i>Back to Bills
                            </a>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Create Bill Form -->
    <div class="row justify-content-center">
        <div class="col-lg-8">
            <div class="card border-0 shadow-sm" style="border-radius: 15px;">
                <div class="card-header bg-white border-0" style="border-radius: 15px 15px 0 0;">
                    <h5 class="mb-0">
                        <i class="fas fa-plus-circle me-2 text-success"></i>
                        Bill Information
                    </h5>
                </div>
                <div class="card-body">
                    <form action="{{ route('bills.store') }}" method="POST">
                        @csrf
                        
                        <!-- Client Selection -->
                        <div class="row mb-3">
                            <div class="col-md-6">
                                <label for="client_info_id" class="form-label">
                                    <i class="fas fa-user me-1"></i>Select Client <span class="text-danger">*</span>
                                </label>
                                <select class="form-select @error('client_info_id') is-invalid @enderror" id="client_info_id" name="client_info_id" required>
                                    <option value="">Choose a client...</option>
                                    @foreach($activeClients as $clientInfo)
                                        <option value="{{ $clientInfo->id }}" {{ old('client_info_id') == $clientInfo->id ? 'selected' : '' }}>
                                            {{ $clientInfo->client->name ?? 'N/A' }} 
                                            @if($clientInfo->client->username)
                                                ({{ $clientInfo->client->username }})
                                            @endif
                                        </option>
                                    @endforeach
                                </select>
                                @error('client_info_id')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                            <div class="col-md-6">
                                <label for="month_year" class="form-label">
                                    <i class="fas fa-calendar me-1"></i>Bill Period <span class="text-danger">*</span>
                                </label>
                                <input type="month" class="form-control @error('month_year') is-invalid @enderror" 
                                       id="month_year" name="month_year" value="{{ old('month_year', date('Y-m')) }}" required>
                                @error('month_year')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>

                        <!-- Bill Details -->
                        <div class="row mb-3">
                            <div class="col-md-6">
                                <label for="amount" class="form-label">
                                    <i class="fas fa-dollar-sign me-1"></i>Bill Amount <span class="text-danger">*</span>
                                </label>
                                <div class="input-group">
                                    <span class="input-group-text">$</span>
                                    <input type="number" class="form-control @error('amount') is-invalid @enderror" 
                                           id="amount" name="amount" value="{{ old('amount') }}" 
                                           step="0.01" min="0" required>
                                    @error('amount')
                                        <div class="invalid-feedback">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>
                            <div class="col-md-6">
                                <label for="due_date" class="form-label">
                                    <i class="fas fa-calendar-alt me-1"></i>Due Date <span class="text-danger">*</span>
                                </label>
                                <input type="date" class="form-control @error('due_date') is-invalid @enderror" 
                                       id="due_date" name="due_date" value="{{ old('due_date', date('Y-m-d', strtotime('+30 days'))) }}" required>
                                @error('due_date')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>

                        <!-- Additional Information -->
                        <div class="row mb-3">
                            <div class="col-md-12">
                                <label for="description" class="form-label">
                                    <i class="fas fa-file-alt me-1"></i>Description
                                </label>
                                <textarea class="form-control @error('description') is-invalid @enderror" 
                                          id="description" name="description" rows="3" 
                                          placeholder="Enter bill description or notes...">{{ old('description') }}</textarea>
                                @error('description')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>

                        <!-- Service Details -->
                        <div class="row mb-4">
                            <div class="col-md-6">
                                <label for="service_type" class="form-label">
                                    <i class="fas fa-cogs me-1"></i>Service Type
                                </label>
                                <select class="form-select @error('service_type') is-invalid @enderror" id="service_type" name="service_type">
                                    <option value="">Select service type...</option>
                                    <option value="internet" {{ old('service_type') == 'internet' ? 'selected' : '' }}>Internet Service</option>
                                    <option value="pppoe" {{ old('service_type') == 'pppoe' ? 'selected' : '' }}>PPPoE Service</option>
                                    <option value="maintenance" {{ old('service_type') == 'maintenance' ? 'selected' : '' }}>Maintenance</option>
                                    <option value="installation" {{ old('service_type') == 'installation' ? 'selected' : '' }}>Installation</option>
                                    <option value="other" {{ old('service_type') == 'other' ? 'selected' : '' }}>Other</option>
                                </select>
                                @error('service_type')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                            <div class="col-md-6">
                                <label for="billing_cycle" class="form-label">
                                    <i class="fas fa-sync-alt me-1"></i>Billing Cycle
                                </label>
                                <select class="form-select @error('billing_cycle') is-invalid @enderror" id="billing_cycle" name="billing_cycle">
                                    <option value="monthly" {{ old('billing_cycle', 'monthly') == 'monthly' ? 'selected' : '' }}>Monthly</option>
                                    <option value="quarterly" {{ old('billing_cycle') == 'quarterly' ? 'selected' : '' }}>Quarterly</option>
                                    <option value="yearly" {{ old('billing_cycle') == 'yearly' ? 'selected' : '' }}>Yearly</option>
                                    <option value="one-time" {{ old('billing_cycle') == 'one-time' ? 'selected' : '' }}>One-time</option>
                                </select>
                                @error('billing_cycle')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                        </div>

                        <!-- Form Actions -->
                        <div class="row">
                            <div class="col-12">
                                <div class="d-flex justify-content-end gap-2">
                                    <a href="{{ route('bills.index') }}" class="btn btn-outline-secondary">
                                        <i class="fas fa-times me-2"></i>Cancel
                                    </a>
                                    <button type="submit" class="btn btn-primary">
                                        <i class="fas fa-save me-2"></i>Create Bill
                                    </button>
                                </div>
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>

    <!-- Client Information Card -->
    @if($activeClients->count() > 0)
    <div class="row mt-4">
        <div class="col-12">
            <div class="card border-0 shadow-sm" style="border-radius: 15px;">
                <div class="card-header bg-white border-0" style="border-radius: 15px 15px 0 0;">
                    <h5 class="mb-0">
                        <i class="fas fa-users me-2 text-info"></i>
                        Available Clients ({{ $activeClients->count() }})
                    </h5>
                </div>
                <div class="card-body">
                    <div class="row">
                        @foreach($activeClients->take(6) as $clientInfo)
                        <div class="col-md-4 mb-3">
                            <div class="border rounded p-3 h-100" style="border-radius: 10px;">
                                <div class="d-flex align-items-center">
                                    <div class="bg-primary bg-opacity-10 rounded-circle p-2 me-3">
                                        <i class="fas fa-user text-primary"></i>
                                    </div>
                                    <div>
                                        <h6 class="mb-1">{{ $clientInfo->client->name ?? 'N/A' }}</h6>
                                        <small class="text-muted">
                                            @if($clientInfo->client->username)
                                                Username: {{ $clientInfo->client->username }}
                                            @endif
                                        </small>
                                        <br>
                                        <small class="text-success">
                                            @if($clientInfo->client->package_name)
                                                Package: {{ $clientInfo->client->package_name }}
                                            @endif
                                        </small>
                                    </div>
                                </div>
                            </div>
                        </div>
                        @endforeach
                    </div>
                    @if($activeClients->count() > 6)
                        <div class="text-center mt-3">
                            <small class="text-muted">And {{ $activeClients->count() - 6 }} more clients...</small>
                        </div>
                    @endif
                </div>
            </div>
        </div>
    </div>
    @else
    <div class="row mt-4">
        <div class="col-12">
            <div class="card border-0 shadow-sm" style="border-radius: 15px;">
                <div class="card-body text-center py-5">
                    <i class="fas fa-exclamation-triangle text-warning" style="font-size: 3rem;"></i>
                    <h5 class="mt-3 text-warning">No Active Clients Available</h5>
                    <p class="text-muted">There are no active clients to generate bills for.</p>
                    <a href="{{ route('clients.create') }}" class="btn btn-primary">
                        <i class="fas fa-plus me-2"></i>Add New Client
                    </a>
                </div>
            </div>
        </div>
    </div>
    @endif
</div>
@endsection

@section('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Auto-populate amount when client is selected
    const clientSelect = document.getElementById('client_info_id');
    const amountInput = document.getElementById('amount');
    
    clientSelect.addEventListener('change', function() {
        // You can add logic here to auto-populate amount based on client's package
        // For now, we'll just clear the amount field
        if (this.value) {
            amountInput.focus();
        }
    });
    
    // Set default due date to 30 days from now
    const today = new Date();
    const dueDate = new Date(today.getTime() + (30 * 24 * 60 * 60 * 1000));
    document.getElementById('due_date').value = dueDate.toISOString().split('T')[0];
});
</script>
@endsection