Veri: Minimal Authentication for Rails

gem "veri"

# These are the default values; you can change them as needed
Veri.configure do |config|
  config.hashing_algorithm = :argon2       # Password hashing algorithm (:argon2, :bcrypt, :pbkdf2, or :scrypt)
  config.inactive_session_lifetime = nil   # Session inactivity timeout (nil means sessions never expire due to inactivity)
  config.total_session_lifetime = 14.days  # Maximum session duration regardless of activity
  config.user_model_name = "User"          # Your user model name
end

# Set or update a password
user.update_password("password")

# Verify a password
user.verify_password("password")

class ApplicationController < ActionController::Base
  include Veri::Authentication

  with_authentication # Require authentication by default
end

class PicturesController < ApplicationController
  skip_authentication only: [:index, :show] # Allow public access to index and show actions
end

class RegistrationsController < ApplicationController
  skip_authentication

  def create
    user = User.new(user_params)

    if user.valid?
      user.update_password(user_params[:password])
      log_in(user)
      redirect_to dashboard_path
    else
      render :new, status: :unprocessable_content
    end
  end
end

class SessionsController < ApplicationController
  skip_authentication except: [:destroy]

  def create
    user = User.find_by(email: params[:email])

    if user&.verify_password(params[:password])
      log_in(user)
      redirect_to return_path || dashboard_path
    else
      flash.now[:alert] = "Invalid credentials"
      render :new, status: :unprocessable_content
    end
  end

  def destroy
    log_out
    redirect_to root_path
  end
end

# Returns authenticated user or nil
current_user

# Returns true if user is authenticated
logged_in?

# Authenticates user and creates session, returns true on success or false if account is locked
log_in(user)

# Terminates current session
log_out

# Returns path user was trying to access before authentication, if any
return_path

# Returns current authentication session
current_session

class ApplicationController < ActionController::Base
  include Veri::Authentication

  with_authentication

  private

  def when_unauthenticated
    redirect_to login_path
  end
end

# Get all sessions for a user
user.sessions

# Get current session in controller
current_session

# Get the authenticated user
session.identity

# Get session details
session.info
# => {
#   device: "Desktop",
#   os: "macOS",
#   browser: "Chrome",
#   ip_address: "1.2.3.4",
#   last_seen_at: "2023-10-01 12:00:00"
# }

# Session is active (neither expired nor inactive)
session.active?

# Session exceeded inactivity timeout
session.inactive?

# Session exceeded maximum lifetime
session.expired?

# Fetch active sessions
Veri::Session.active

# Fetch inactive sessions
Veri::Session.inactive

# Fetch expired sessions
Veri::Session.expired

# Terminate a specific session
session.terminate

# Terminate all sessions
Veri::Session.terminate_all

# Terminate all sessions for a specific user
user.sessions.terminate_all

# Clean up expired/inactive sessions, and sessions with deleted tenant
Veri::Session.prune

# Clean up expired/inactive sessions for a specific user
user.sessions.prune

# Lock a user account
user.lock!

# Unlock a user account
user.unlock!

# Check if account is locked
user.locked?

# Fetch locked users
User.locked

# Fetch unlocked users
User.unlocked

class ApplicationController < ActionController::Base
  include Veri::Authentication

  with_authentication

  private

  def current_tenant
    # Option 1: String-based tenancy (e.g., subdomain)
    request.subdomain

    # Option 2: Model-based tenancy (e.g., organization)
    Company.find_by(subdomain: request.subdomain)
  end
end

# Returns the tenant (string, model instance, or nil in single-tenant applications)
session.tenant

# Fetch all sessions for a given tenant
Veri::Session.in_tenant(tenant)

# Fetch sessions for a specific user within a tenant
user.sessions.in_tenant(tenant)

# Terminate all sessions for a specific user within a tenant
user.sessions.in_tenant(tenant).terminate_all

# Rename a tenant class (e.g., when you rename your Organization model to Company)
migrate_authentication_tenant!("Organization", "Company")

# Remove orphaned tenant data (e.g., when you delete the Organization model entirely)
delete_authentication_tenant!("Organization")

module Admin
  class ImpersonationController < ApplicationController
    def create
      user = User.find(params[:user_id])
      current_session.shapeshift(user)
      redirect_to root_path, notice: "Now viewing as #{user.name}"
    end

    def destroy
      original_user = current_session.true_identity
      current_session.to_true_identity
      redirect_to admin_dashboard_path, notice: "Returned to #{original_user.name}"
    end
  end
end

# Assume another user's identity (maintains original identity)
session.shapeshift(user)

# Return to original identity
session.to_true_identity

# Returns true if currently shapeshifted
session.shapeshifted?

# Returns original user when shapeshifted, otherwise current user
session.true_identity

# Returns true if the current session is shapeshifted
shapeshifter?

module AuthenticationHelpers
  def log_in(user)
    password = "test_password"
    user.update_password(password)
    post login_path, params: { email: user.email, password: }
  end

  def log_out
    delete logout_path
  end
end

# In your spec_helper.rb
RSpec.configure do |config|
  config.include AuthenticationHelpers, type: :request
end

module AuthenticationHelpers
  def log_in(user)
    controller.log_in(user)
  end

  def log_out
    controller.log_out
  end
end

# In your spec_helper.rb
RSpec.configure do |config|
  config.include AuthenticationHelpers, type: :controller
end