symfony_example_app/config/services.yaml

# This file is the entry point to configure your own services.
# Files in the packages/ subdirectory configure your dependencies.

# Put parameters here that don't need to change on each machine where the app is deployed
# https://symfony.com/doc/current/best_practices.html#use-parameters-for-application-configuration
parameters:
    env(SYMFONY_EXAMPLE_APP_CURRENCIES): '["CZK", "EUR", "USD", "GBP"]'
    app.currencies: '%env(json:SYMFONY_EXAMPLE_APP_CURRENCIES)%'

services:
    # default configuration for services in *this* file
    _defaults:
        autowire: true      # Automatically injects dependencies in your services.
        autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.


    # makes classes in src/ available to be used as services
    # this creates a service per class whose id is the fully-qualified class name
    App\:
        resource: '../src/'
        exclude:
            - '../src/DependencyInjection/'
            - '../src/Entity/'
            - '../src/Kernel.php'

    App\Service\StaticCurrencyLister:
        arguments:
            $available_currencies: '%app.currencies%'

    App\Service\StubQRCodeGenerator:
        arguments:
            $imagePath: '%kernel.project_dir%/assets/images/wip.png'

    App\Service\CurrencyListerInterface: '@App\Service\StaticCurrencyLister'
    App\Service\QRCodeQROptionsProviderInterface: '@App\Service\QRCodeQROptionsDefaultProvider'
    App\Service\QRCodeGeneratorInterface: '@App\Service\StubQRCodeGenerator'

    # add more service definitions when explicit configuration is needed
    # please note that last definitions always *replace* previous ones