From 900388856496f56ff2c6dea6ee63d8c49dccde50 Mon Sep 17 00:00:00 2001
From: David Lambauer <david@run-as-root.sh>
Date: Thu, 13 Oct 2022 10:43:28 +0200
Subject: [PATCH] :sparkles:  Added possibility to delete configs (#53)

---
 Model/Processor/ImportProcessor.php               | 12 ++++++++++++
 Test/Unit/Model/Processor/ImportProcessorTest.php |  8 +++++++-
 docs/config-import.md                             | 11 ++++++++++-
 3 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/Model/Processor/ImportProcessor.php b/Model/Processor/ImportProcessor.php
index cd07587..4f45ffb 100644
--- a/Model/Processor/ImportProcessor.php
+++ b/Model/Processor/ImportProcessor.php
@@ -16,6 +16,7 @@
 
 class ImportProcessor extends AbstractProcessor implements ImportProcessorInterface
 {
+    private const DELETE_CONFIG_FLAG = '!!DELETE';
     /**
      * @var WriterInterface
      */
@@ -81,6 +82,17 @@ public function process()
             foreach ($configurations as $configPath => $configValues) {
                 $scopeConfigValues = $this->transformConfigToScopeConfig($configPath, $configValues);
                 foreach ($scopeConfigValues as $scopeConfigValue) {
+                    if ($scopeConfigValue['value'] === self::DELETE_CONFIG_FLAG) {
+                        $this->configWriter->delete(
+                            $configPath,
+                            $scopeConfigValue['scope'],
+                            $this->scopeConverter->convert($scopeConfigValue['scope_id'], $scopeConfigValue['scope'])
+                        );
+                        $this->getOutput()->writeln(sprintf('<comment>%s => %s</comment>', $configPath, 'DELETED'));
+                        $valuesSet++;
+                        continue;
+                    }
+
                     $this->configWriter->save(
                         $configPath,
                         $scopeConfigValue['value'],
diff --git a/Test/Unit/Model/Processor/ImportProcessorTest.php b/Test/Unit/Model/Processor/ImportProcessorTest.php
index 7666e21..3f3ff24 100644
--- a/Test/Unit/Model/Processor/ImportProcessorTest.php
+++ b/Test/Unit/Model/Processor/ImportProcessorTest.php
@@ -121,6 +121,11 @@ public function process(): void
                     0 => 'ABC',
                 ],
             ],
+            'test/config/custom_field_to_be_deleted' => [
+                'default' => [
+                    0 => '!!DELETE',
+                ],
+            ]
         ];
 
         $readerMock = $this->getMockBuilder(YamlReader::class)
@@ -128,8 +133,9 @@ public function process(): void
             ->getMock();
         $readerMock->expects($this->once())->method('parse')->willReturn($parseResult);
 
-        $this->scopeValidatorMock->expects($this->once())->method('validate')->willReturn(true);
+        $this->scopeValidatorMock->expects($this->exactly(2))->method('validate')->willReturn(true);
         $this->configWriterMock->expects($this->once())->method('save');
+        $this->configWriterMock->expects($this->once())->method('delete');
 
         $processor = new ImportProcessor($this->configWriterMock, $this->scopeValidatorMock, $this->scopeConverterMock);
         $processor->setOutput($this->outputMock);
diff --git a/docs/config-import.md b/docs/config-import.md
index 4d3d36e..c8d3b0f 100644
--- a/docs/config-import.md
+++ b/docs/config-import.md
@@ -2,7 +2,6 @@
 
 Import configuration values in Magento in an automated way instead of manually clicking through the store configuration.
 
-
 ## Usage
 
 ```bash
@@ -73,6 +72,16 @@ vendorx/general/api_key:
 
 You can then set the environment variable `VENDORX_API_KEY` in your CI/CD configuration to the secret API key. 
 
+### Delete Config
+
+Sometimes, it might be helpful to be able to delete certain config values and get back to the default behavior. To do so, your config value has to be a magic-ish string. 
+
+```yaml
+vendorx/general/api_key:
+  default:
+    0: "!!DELETE"
+```
+
 ### Recursive folder setup
 
 If you choose to store your configuration files in subdirectories, e.g. per vendor, the recommended folder setup should look like this: