initial commit

app/Models/Invoice.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Enums\InvoiceStatus;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Invoice extends Model
+{
+    use HasFactory, SoftDeletes;
+
+    protected $fillable = [
+        'client_id', 'invoice_number', 'title', 'description',
+        'subtotal', 'tax_rate', 'tax_amount', 'total', 'currency',
+        'status', 'issue_date', 'due_date', 'paid_date', 'notes',
+        'bank_name', 'bank_account', 'bank_holder',
+    ];
+
+    protected $casts = [
+        'status'     => InvoiceStatus::class,
+        'issue_date' => 'date',
+        'due_date'   => 'date',
+        'paid_date'  => 'date',
+        'subtotal'   => 'decimal:2',
+        'tax_rate'   => 'decimal:2',
+        'tax_amount' => 'decimal:2',
+        'total'      => 'decimal:2',
+    ];
+
+    public function client(): BelongsTo
+    {
+        return $this->belongsTo(Client::class);
+    }
+
+    public function items(): HasMany
+    {
+        return $this->hasMany(InvoiceItem::class);
+    }
+
+    public function recalculate(): void
+    {
+        $this->subtotal   = $this->items->sum('total');
+        $this->tax_amount = round($this->subtotal * ($this->tax_rate / 100), 2);
+        $this->total      = $this->subtotal + $this->tax_amount;
+        $this->save();
+    }
+
+    public function getFormattedTotalAttribute(): string
+    {
+        return 'Rp ' . number_format((float) $this->total, 0, ',', '.');
+    }
+
+    public static function generateNumber(): string
+    {
+        $prefix = 'INV-' . now()->format('Ym');
+        $last   = static::where('invoice_number', 'like', $prefix . '%')->count();
+        return $prefix . '-' . str_pad((string) ($last + 1), 3, '0', STR_PAD_LEFT);
+    }
+}