README

Your companion for .env files. Everybody knows about 12 factor and environments variables now. A lot of frameworks such as Symfony are using a .env file to configure the application, but we don't have anything to help users to complete their local .env file.

Companienv will helps you manage the .env files, from a reference .env.dist version in your code repository. Companienv can:

• Read and populate default values
• Identify and ask only missing variables
• Ask variables only if matching some conditions
• Propagate files (copy files from somewhere else)
• Generate public/private RSA keys
• Generate SSL certificates
• Much more, via your own extensions

Usage

1. Require sroze/companienv as your project dependency:

composer req sroze/companienv

1. Run your companion:

vendor/bin/companienv

Composer automation

You can run Companienv automatically after composer install or composer update commands by configuring the scripts in your composer.json file:

{
    "scripts": {
        "post-install-cmd": [
            "Companienv\\Composer\\ScriptHandler::run"
        ],
        "post-update-cmd": [
            "Companienv\\Composer\\ScriptHandler::run"
        ]
    }
}

By default, the file used as a template is .env.dist and the written file is .env. You can change these defaults within your composer.json file:

{
    "extra": {
        "companienv-parameters": [
            {
                "file": ".env.foo",
                "dist-file": ".env.foo.dist"
            }
        ]
    }
}

The .env.dist file

All your configuration is directly in your .env.dist file, as comments. The configuration is divided in blocks that will be displayed to the user for a greater understanding of the configuration. Here are the fondations for Companienv:

• Blocks. They logically group variables together. They are defined by a title (line starting with a double-comment ##) and a description (every comment line directly bellow)
• Attributes. Defined by a line starting with #+, an attribute is associated to one or multiple variables. These attributes are the entrypoint for extensions. In the example above, it says that the JWT_* variables are associated with an RSA key pair, so Companienv will automatically offer the user to generate one for them.
• Comments. Lines starting by #~ will be ignored by Companienv.

Example of .env.dist. file

# .env.dist

## Welcome in the configuration of [my-project]
#
#~ Please run the `bin/start` command.
#~ These lines starting with `~` are not going to be displayed to the user

## GitHub
# In order to be able to login with GitHub, you need to create a GitHub application. To get access to the code
# repositories, you need to create a GitHub integration.
#
#+file-to-propagate(GITHUB_INTEGRATION_KEY_PATH)
#
GITHUB_CLIENT_ID=
GITHUB_CLIENT_SECRET=
GITHUB_INTEGRATION_ID=
GITHUB_INTEGRATION_KEY_PATH=
GITHUB_SECRET=

## Security
# We need sauce! Well, no, we need an SSL certificate.
#
#+rsa-pair(JWT_PRIVATE_KEY_PATH JWT_PUBLIC_KEY_PATH JWT_PRIVATE_KEY_PASS_PHRASE)
#
JWT_PRIVATE_KEY_PATH=/runtime/keys/jwt-private.pem
JWT_PUBLIC_KEY_PATH=/runtime/keys/jwt-public.pem
JWT_PRIVATE_KEY_PASS_PHRASE=

## Another block
# With its (optional) description
AND_OTHER_VARIABLES=

Built-in extensions

• Only if ...
• Propagate file
• RSA keys
• SSL certificate

only-if extension

Some of the blocks of your .env file might not even be relevant if some other variable was disabling a given feature.

Example: This will only ask for the INTERCOM_APPLICATION_ID variable if INTERCOM_ENABLED has the value (current or entered by the user) true.

## Support & Feedback
# If you would like to allow your users to get some support from you, give you some feedback and this
# sort of things, select the integrations you'd like.
#
#+only-if(INTERCOM_APPLICATION_ID):(INTERCOM_ENABLED=true)
#
INTERCOM_ENABLED=false
INTERCOM_APPLICATION_ID=none

file-to-propagate extension

Will ask the path of an existing file and copy it to the destination mentioned in the reference.

Example: this will ask the user to give the path of an existing file. It will copy this file to the path /runtime/keys/firebase.json, relative to the root directory of the project.

#+file-to-propagate(FIREBASE_SERVICE_ACCOUNT_PATH)
FIREBASE_SERVICE_ACCOUNT_PATH=/runtime/keys/firebase.json

rsa-pair extension

If the public/private key pair does not exist, Companienv will offer to generate one for the user.

#+rsa-pair(JWT_PRIVATE_KEY_PATH JWT_PUBLIC_KEY_PATH JWT_PRIVATE_KEY_PASS_PHRASE)
JWT_PRIVATE_KEY_PATH=/runtime/keys/jwt-private.pem
JWT_PUBLIC_KEY_PATH=/runtime/keys/jwt-public.pem
JWT_PRIVATE_KEY_PASS_PHRASE=

ssl-certificate-extension

Similar to the RSA keys pair: Companienv will offer to generate a self-signed SSL certificate if it does not exist yet.

#+ssl-certificate(SSL_CERTIFICATE_PRIVATE_KEY_PATH SSL_CERTIFICATE_CERTIFICATE_PATH SSL_CERTIFICATE_DOMAIN_NAME)
SSL_CERTIFICATE_PRIVATE_KEY_PATH=/runtime/keys/server.key
SSL_CERTIFICATE_CERTIFICATE_PATH=/runtime/keys/server.crt
SSL_CERTIFICATE_DOMAIN_NAME=

Your own extensions

You can easily create and use your own extensions with Companienv. In order to do so, you'll have to start Companienv with your own PHP file and use the registerExtension method of the Application:

use Companienv\Application;
use Companienv\Extension;

$application = new Application($rootDirectory);
$application->registerExtension(new class() implements Extension {
    // Implements the interface...
});
$application->run();