Initial project

app/Policies/ConversationPolicy.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace App\Policies;
+
+use App\Models\Conversation;
+use App\Models\ConversationParticipant;
+use App\Models\User;
+
+class ConversationPolicy
+{
+    /**
+     * Determine whether the user can view any models.
+     */
+    public function viewAny(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can view the model.
+     */
+    public function view(User $user, Conversation $conversation): bool
+    {
+        return $this->participates($user, $conversation);
+    }
+
+    /**
+     * Determine whether the user can create models.
+     */
+    public function create(User $user): bool
+    {
+        return true;
+    }
+
+    /**
+     * Determine whether the user can update the model.
+     */
+    public function update(User $user, Conversation $conversation): bool
+    {
+        return $conversation->participants()
+            ->where('user_id', $user->id)
+            ->where('role', ConversationParticipant::RoleAdmin)
+            ->exists();
+    }
+
+    /**
+     * Determine whether the user can delete the model.
+     */
+    public function delete(User $user, Conversation $conversation): bool
+    {
+        return $conversation->created_by_id === $user->id;
+    }
+
+    /**
+     * Determine whether the user can restore the model.
+     */
+    public function restore(User $user, Conversation $conversation): bool
+    {
+        return false;
+    }
+
+    /**
+     * Determine whether the user can permanently delete the model.
+     */
+    public function forceDelete(User $user, Conversation $conversation): bool
+    {
+        return false;
+    }
+
+    public function sendMessage(User $user, Conversation $conversation): bool
+    {
+        return $this->participates($user, $conversation);
+    }
+
+    private function participates(User $user, Conversation $conversation): bool
+    {
+        return $conversation->participants()
+            ->where('user_id', $user->id)
+            ->exists();
+    }
+}