feat: Allow multiple lines addition with array for add-lines Configurator

[pocky]

Adding multiple lines via the add-lines configurator is currently complex due to the JSON format. This PR introduces support for adding multiple lines through an array.

The array is processed in a straightforward manner using an implode with PHP_EOL \n. This approach has minimal impact on the existing code, avoids any regressions, and only modifies a private method. It also maintains compatibility with multi-line strings using "\n".

Test scenarios have been added to ensure proper functionality and validate the new feature.

[pocky]

Should I apply the suggested patch even if it's larger than my changes?

[mtarld]

@pocky, yes, you should apply suggestions about \is_array and trailing , related to your changes.
But you can ignore other suggestions 🙂

[stof]

Instead of adding this in the configurator (which won't be available for older versions of Flex, making recipes incompatible with them if they use an array), shouldn't we rather support using a an array in the source code of the recipes repository but converting that to a string when generating the Flex endpoints with https://github.com/symfony-tools/recipes-checker ? It would make it compatible with existing Flex versions (allowing to start using arrays in symfony/recipes immediately instead of having to wait first until support for arrays is widespread enough among installed versions of Flex).

[pocky]

@mtarld Thanks! Done (except for the last one)

@@ -615,7 +615,7 @@
                 ['file' => 'assets/app.js', 'position' => 'top', 'content' => [
                     "import './stimulus_bootstrap';",
                     "import { useIntersection } from 'stimulus-use';",
-                    "",
+                    '',
                     "  console.log(years['2025'] !== years['0225']);",
                 ]],
             ],

[pocky]

@stof

Instead of adding this in the configurator (which won't be available for older versions of Flex, making recipes incompatible with them if they use an array), shouldn't we rather support using a an array in the source code of the recipes repository but converting that to a string when generating the Flex endpoints with https://github.com/symfony-tools/recipes-checker ? It would make it compatible with existing Flex versions (allowing to start using arrays in symfony/recipes immediately instead of having to wait first until support for arrays is widespread enough among installed versions of Flex).

I don’t know. I wrote my recipe using add-lines and an array like Docker and Compose keys because I thought: "same problem, same solution." Then I realized this wasn’t the case and made this PR.