Add Late Fee Configuration and Automated Late Fee Calculation

app/Models/Invoice.php

@@ -8,6 +8,7 @@
 use App\Services\CurrencyService;
 use App\Traits\HasTeam;
 use Illuminate\Support\Facades\Mail;
+use Carbon\Carbon;
 
 class Invoice extends Model
 {
@@ -27,11 +28,15 @@ class Invoice extends Model
         'discount_id',
         'discount_amount',
         'invoice_template_id',
+        'late_fee_amount',
+        'last_late_fee_date',
     ];
 
     protected $casts = [
         'issue_date' => 'datetime',
         'due_date' => 'datetime',
+        'last_late_fee_date' => 'datetime',
+        'late_fee_amount' => 'decimal:2',
     ];
 
     public function currency()
@@ -125,4 +130,78 @@ public function getFormattedAmount()
     {
         return number_format($this->total_amount, 2) . ' ' . $this->currency;
     }
+
+    public function isOverdue()
+    {
+        return $this->status === 'pending' && $this->due_date->isPast();
+    }
+
+    public function calculateLateFee()
+    {
+        if (!$this->isOverdue()) {
+            return 0;
+        }
+
+        $config = LateFeeConfiguration::where('team_id', $this->team_id)->first();
+        if (!$config) {
+            return 0;
+        }
+
+        // Check grace period
+        $daysOverdue = $this->due_date->diffInDays(now());
+        if ($daysOverdue <= $config->grace_period_days) {
+            return 0;
+        }
+
+        $baseAmount = $config->is_compound ? 
+            ($this->total_amount + $this->late_fee_amount) : 
+            $this->total_amount;
+
+        $fee = $config->fee_type === 'percentage' ?
+            ($baseAmount * ($config->fee_amount / 100)) :
+            $config->fee_amount;
+
+        // Apply frequency rules
+        if ($this->last_late_fee_date) {
+            $daysSinceLastFee = $this->last_late_fee_date->diffInDays(now());
+            $fee = match($config->frequency) {
+                'one-time' => 0,
+                'daily' => $daysSinceLastFee >= 1 ? $fee : 0,
+                'weekly' => $daysSinceLastFee >= 7 ? $fee : 0,
+                'monthly' => $daysSinceLastFee >= 30 ? $fee : 0,
+                default => 0,
+            };
+        }
+
+        // Check max fee amount
+        if ($config->max_fee_amount) {
+            $totalFees = $this->late_fee_amount + $fee;
+            if ($totalFees > $config->max_fee_amount) {
+                $fee = max(0, $config->max_fee_amount - $this->late_fee_amount);
+            }
+        }
+
+        return round($fee, 2);
+    }
+
+    public function applyLateFee()
+    {
+        $fee = $this->calculateLateFee();
+        if ($fee > 0) {
+            $this->late_fee_amount += $fee;
+            $this->last_late_fee_date = now();
+            $this->save();
+        }
+        return $fee;
+    }
+
+    public function getTotalWithLateFeeAttribute()
+    {
+        return $this->final_total + $this->late_fee_amount;
+    }
+
+    public function getFormattedTotalWithLateFeeAttribute()
+    {
+        return number_format($this->total_with_late_fee, 2) . ' ' . $this->currency;
+    }
 }

app/Models/LateFeeConfiguration.php

@@ -0,0 +1,50 @@
+
+
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use App\Traits\HasTeam;
+
+class LateFeeConfiguration extends Model
+{
+    use HasFactory;
+    use HasTeam;
+
+    protected $fillable = [
+        'team_id',
+        'fee_type',
+        'fee_amount',
+        'grace_period_days',
+        'max_fee_amount',
+        'is_compound',
+        'frequency',
+    ];
+
+    protected $casts = [
+        'is_compound' => 'boolean',
+        'fee_amount' => 'decimal:2',
+        'max_fee_amount' => 'decimal:2',
+        'grace_period_days' => 'integer',
+    ];
+
+    public static function getFrequencyOptions()
+    {
+        return [
+            'one-time' => 'One Time',
+            'daily' => 'Daily',
+            'weekly' => 'Weekly',
+            'monthly' => 'Monthly'
+        ];
+    }
+
+    public static function getFeeTypeOptions()
+    {
+        return [
+            'percentage' => 'Percentage',
+            'fixed' => 'Fixed Amount'
+        ];
+    }
+}

app/Services/BillingService.php

@@ -205,12 +205,28 @@ public function sendOverdueReminders()
             ->get();
 
         foreach ($overdueInvoices as $invoice) {
+            // Apply late fee
+            $invoice->applyLateFee();
+
             // Send overdue reminder email
             $this->sendOverdueReminderEmail($invoice);
+
+            // Suspend service if applicable
             $this->serviceProvisioningService->manageService($invoice->subscription, 'suspend');
         }
     }
 
+    public function processLateFees()
+    {
+        $pendingInvoices = Invoice::where('status', 'pending')
+            ->where('due_date', '<', Carbon::now())
+            ->get();
+
+        foreach ($pendingInvoices as $invoice) {
+            $invoice->applyLateFee();
+        }
+    }
+
     private function sendOverdueReminderEmail(Invoice $invoice)
     {
         $customer = $invoice->customer;

database/migrations/2024_01_10_000001_create_late_fee_configurations_table.php

@@ -0,0 +1,30 @@
+
+
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up()
+    {
+        Schema::create('late_fee_configurations', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('team_id')->constrained()->onDelete('cascade');
+            $table->enum('fee_type', ['percentage', 'fixed']);
+            $table->decimal('fee_amount', 10, 2);
+            $table->integer('grace_period_days')->default(0);
+            $table->decimal('max_fee_amount', 10, 2)->nullable();
+            $table->boolean('is_compound')->default(false);
+            $table->enum('frequency', ['one-time', 'daily', 'weekly', 'monthly'])->default('one-time');
+            $table->timestamps();
+        });
+    }
+
+    public function down()
+    {
+        Schema::dropIfExists('late_fee_configurations');
+    }
+};

database/migrations/2024_01_10_000002_add_late_fee_fields_to_invoices.php

@@ -0,0 +1,25 @@
+
+
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->decimal('late_fee_amount', 10, 2)->default(0);
+            $table->timestamp('last_late_fee_date')->nullable();
+        });
+    }
+
+    public function down()
+    {
+        Schema::table('invoices', function (Blueprint $table) {
+            $table->dropColumn(['late_fee_amount', 'last_late_fee_date']);
+        });
+    }
+};