Implementa planeamento de compras com marcos e responsabilidades por empresa

app/Models/PurchasePlanItem.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\PurchasingRole;
+use App\Models\Concerns\BelongsToTenant;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+
+class PurchasePlanItem extends Model
+{
+    use BelongsToTenant;
+
+    protected $guarded = ['id'];
+
+    protected $attributes = ['version' => 1];
+
+    /** @param Builder<PurchasePlanItem> $query */
+    public function scopeVisibleTo(Builder $query, User $user): void
+    {
+        match ($user->purchasing_role) {
+            PurchasingRole::Admin, PurchasingRole::Procurement, PurchasingRole::Finance => null,
+            PurchasingRole::DepartmentHead => $query->where(fn ($visible) => $visible->where('department_id', $user->department_id)->orWhere('responsible_id', $user->id)),
+            default => $query->where('responsible_id', $user->id),
+        };
+    }
+
+    protected static function booted(): void
+    {
+        static::deleting(fn () => throw new \LogicException('Preservar o planeamento.'));
+    }
+}

app/Models/PurchasePlanMilestone.php

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+<?php
+
+namespace App\Models;
+
+use App\Models\Concerns\BelongsToTenant;
+use Illuminate\Database\Eloquent\Model;
+
+class PurchasePlanMilestone extends Model
+{
+    use BelongsToTenant;
+
+    protected $guarded = ['id'];
+
+    protected $attributes = ['version' => 1, 'actual_on' => null];
+
+    protected static function booted(): void
+    {
+        static::deleting(fn () => throw new \LogicException('Preservar marcos e datas anteriores na auditoria.'));
+    }
+}