fix(iOS): #591 track env file changes on each build

[valerii-link]

Why:

This is a fix for #591 , #698 and #788.

What:

Updated the podspec's input_files to include default .env and custom (passed with "ENVFILE") locations. This fix ensures that Xcode recognizes changes in .env files and re-runs the script phase accordingly.

I suggest that touching BuildDotenvConfig.rb is not the best solution, as it will re-run the script phase on every build, even if .env is unchanged.

[bgever]

Maybe need to add '$SRCROOT/../../$ENVFILE' for relative file name.

[valerii-link]

It's a bit tricky 😁
$ENVFILE is used for the case when the env file is set via build_settings, like so (in your Podfile):

ENVFILES = {
  'Debug' => '$(PODS_ROOT)/../../.env.debug',
  'Release' => '$(PODS_ROOT)/../../.env.production',
}
post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      if target.name == 'react-native-config'
        config.build_settings['ENVFILE'] = ENVFILES[config.name]
      end
    end
  end
end

[bgever]

Ah, I don't use the "alternative" path as described here: https://github.com/lugg/react-native-config?tab=readme-ov-file#ios-1

But instead define ENVFILE as environment variable before running the react native scripts from the command line:

In the scripts section of package.json:

"sim.prod": "cross-env ENVFILE=.env.production  react-native run-ios --no-packager --simulator 'iPhone 15 Pro (17.2)'",

Since the Ruby files in this package are reading the environment variables.

I guess I could switch that to use a scheme arg on the CLI instead, but others may also make the above assumption that setting the ENVFILE env var works.

[valerii-link]

In this case, I think the following is better:

"sim.prod": "cross-env ENVFILE=$(pwd)/.env.production react-native run-ios --no-packager --simulator 'iPhone 15 Pro (17.2)'"

Why:
To avoid mixing concerns. The Xcode project should not define where the ENVFILE is located (except for the default location like '$SRCROOT/../../.env').