SPINEN's Discourse SSO for Laravel

    'providers' => [
        // ...
        Spinen\Discourse\SsoServiceProvider::class,
    ];

    'discourse' => [
        // The route's URI that acts as the entrypoint for Discourse to start the SSO process.
        // Used by Discourse to route incoming logins.
        'route' => 'discourse/sso',
        
        // Secret string used to encrypt/decrypt SSO information,
        // be sure that it is 10 chars or longer
        'secret' => env('DISCOURSE_SECRET'),
        
        // Disable Discourse from sending welcome message
        'suppress_welcome_message' => 'true',
        
        // Where the Discourse form lives
        'url' => env('DISCOURSE_URL'),
        
        // User specific items
        // NOTE: The 'email' & 'external_id' are the only 2 required fields
        'user' => [
            // Check to see if the user has forum access & should be logged in via SSO
            'access' => null,
        
            // Groups to make sure that the user is part of in a comma-separated string
            // NOTE: Groups cannot have spaces in their names & must already exist in Discourse
            'add_groups' => null,

            // Boolean for user a Discourse admin, leave null to ignore
            'admin' => null,

            // Full path to user's avatar image
            'avatar_url' => null,
            
            // The avatar is cached, so this triggers an update
            'avatar_force_update' => false,
            
            // Content of the user's bio
            'bio' => null,
            
            // Verified email address (see "require_activation" if not verified)
            'email' => 'email',
            
            // Unique string to the user that will never change
            'external_id' => 'id',
            
            // Boolean for user a Discourse admin, leave null to ignore 
            'moderator' => null,
            
            // Full name on Discourse if the user is new or 
            // if SiteSetting.sso_overrides_name is set
            'name' => 'name',

            // Groups to make sure that the user is *NOT* part of in a comma-separated string
            // NOTE: Groups cannot have spaces in their names & must already exist in Discourse
            // There is not a way to specify the exact list of groups that a user is in, so
            // you may want to send the inverse of the 'add_groups'
            'remove_groups' => null,
            
            // If the email has not been verified, set this to true
            'require_activation' => false,
            
            // username on Discourse if the user is new or 
            // if SiteSetting.sso_overrides_username is set
            'username' => 'email',
        ],
    ],

    /**
     * Is the user a Discourse moderator.
     *
     * @param  string  $value
     * @return boolean
     */
    public function getDiscourseModeratorAttribute($value)
    {
        return ends_with($this->email, "yourdomain.tld");
    }