Add support to List Domains

This change helps facilitate bulks actions like managing ACME from a client-side app.

After one calls $powerDns->listZones();
knowing what zone is being returned is extremely helpful.
`$zone->getCanonicalName(): string;`

src/AbstractZone.php

@@ -85,4 +85,12 @@ protected function getZonePath(?string $path = null) : string
     {
         return sprintf('zones/%s%s', $this->zone, $path);
     }
+
+    /**
+     * @return string
+     */
+    public function getCanonicalName(): string
+    {
+        return substr($this->zone, 0, strlen($this->zone) - 1);
+    }
 }

src/Powerdns.php

@@ -174,6 +174,19 @@ public function deleteZone(string $canonicalDomain) : bool
         return true;
     }
 
+    /**
+     * @return Zone[]
+     */
+    public function listZones() : array
+    {
+        return array_map(
+            function (array $args) {
+                return new Zone($this->connector, $args['id']);
+            },
+            $this->connector->get('zones')
+        );
+    }
+
     /**
      * Get a cryptokey instance to work with.
      *

tests/PowerdnsTest.php

@@ -55,4 +55,46 @@ public function testZone() : void
         $this->assertInstanceOf(Zone::class, $zone);
         $this->assertTrue($powerDns->deleteZone('test.nl.'));
     }
+
+    public function testListZones() : void
+    {
+        $connector = Mockery::mock(Connector::class);
+        $connector->shouldReceive('get')->withArgs(['zones'])->once()->andReturn(
+            [
+                [
+                    'account' => '',
+                    'dnssec' => false,
+                    'id' => 'example.co.uk',
+                    'kind' => 'Native',
+                    'last_check' => 0,
+                    'masters' => [],
+                    'name' => 'example.',
+                    'notified_serial' => 0,
+                    'serial' => 2019100101,
+                    'url' => '/api/v1/servers/localhost/zones/example.co.uk',
+                ],
+                [
+                    'account' => '',
+                    'dnssec' => false,
+                    'id' => 'example.com',
+                    'kind' => 'Native',
+                    'last_check' => 0,
+                    'masters' => [],
+                    'name' => 'example.',
+                    'notified_serial' => 0,
+                    'serial' => 2019100102,
+                    'url' => '/api/v1/servers/localhost/zones/example.com',
+                ],
+            ]
+        );
+
+        $powerDns = new Powerdns(null, null, null, null, $connector);
+
+        $response = $powerDns->listZones();
+        $this->assertIsArray($response);
+        $this->assertCount(2, $response);
+        foreach ($response as $zone) {
+            $this->assertInstanceOf(Zone::class, $zone);
+        }
+    }
 }

tests/ZoneTest.php

@@ -112,4 +112,11 @@ public function testFindResourceRecords() : void
         $this->assertSame(1, $zone->find('record01.test.nl.')->count());
         $this->assertSame(0, $zone->find('record01.test.nl.', 'MX')->count());
     }
+
+    public function testGetCanonicalName(): void
+    {
+        $connector = Mockery::mock(Connector::class);
+        $zone = new Zone($connector, 'test.nl');
+        $this->assertSame('test.nl', $zone->getCanonicalName());
+    }
 }