raxol

defmodule Raxol.Auth do
  @moduledoc """
  Authentication module for handling user authentication and authorization.

  This module provides functionality for:
  - User authentication
  - Token generation and validation
  - Role-based access control
  - Session management
  """

  alias Raxol.Accounts
  # alias Raxol.Auth.Session # Removed - Session module undefined

  require Raxol.Core.Runtime.Log

  @doc """
  Validates a session token and returns the associated user ID.
  WARNING: This is a placeholder and insecure. Needs proper implementation.
  """
  def validate_token(_session_id, _token) do
    # Placeholder implementation: Always returns {:ok, "user"} for testing UI flows.
    # WARNING: This is insecure and should be replaced with real session/token validation logic.
    {:ok, "user"}
  end

  @doc """
  Checks if a user has the required role.
  """
  def has_role?(user_id, required_role) do
    # Placeholder implementation: Only "admin" and "user" roles are recognized for testing.
    # WARNING: Replace with real role checking logic using your user schema/roles.
    case user_id do
      "admin" -> true
      "user" -> required_role == :user
      _ -> false
    end
  end

  @doc """
  Creates a new session for an authenticated user.
  (Session logic currently commented out, returns :ok)
  """
  @spec create_user_session(integer(), map()) :: :ok
  def create_user_session(user_id, _metadata \\ %{}) do
    Raxol.Core.Runtime.Log.debug("Creating session for user ID: #{user_id}")
    # case Session.create_session(user_id, metadata) do
    #   {:ok, session} ->
    #     Raxol.Core.Runtime.Log.debug("Session created successfully: #{session.session_id}")
    #     {:ok, session}
    #   {:error, reason} ->
    #     Raxol.Core.Runtime.Log.error("Failed to create session: #{inspect(reason)}")
    #     {:error, reason}
    # end
    :ok
  end

  @doc """
  Cleans up a user session.
  """
  @spec cleanup_user_session(String.t()) :: :ok
  def cleanup_user_session(session_id) do
    Raxol.Core.Runtime.Log.debug("Cleaning up session: #{session_id}")
    :ok
  end

  @doc """
  Retrieves user information by ID (Calls Accounts).
  """
  def get_user(user_id) do
    # Delegate to Raxol.Accounts
    Accounts.get_user(user_id)
    # Old Placeholder:
    # # TODO: Implement actual user retrieval from database or source
    # # Placeholder: return a map with basic info and mock role
    # role = case user_id do
    #   "admin" -> :admin
    #   "user" -> :user
    #   _ -> nil
    # end
    # if role do
    #   %{id: user_id, role: role}
    # else
    #   nil
    # end
  end

  @doc """
  Checks if a user has permission for a specific action (Placeholder).
  """
  def has_permission?(_user, _module, _action) do
    # Placeholder implementation: Always allows everything for now.
    # WARNING: Replace with real permission checking logic when available.
    true
  end

  @doc """
  Retrieves a user by their session ID.
  NOTE: This function is a stub. Returns the user or nil if not found or session is invalid.
  """
  def get_user_by_session(_session_id) do
    Raxol.Core.Runtime.Log.warning_with_context(
      "get_user_by_session called, but session lookup is not implemented. This is a stub.",
      %{}
    )

    nil
  end

  # @doc """
  # Checks if a user has a specific permission. (Unused stub; consider removing if not needed)
  # """
  # def has_permission?(user_id, permission) do
  #   user = Accounts.get_user(user_id)
  #   # Assuming permissions are stored in user.permissions list
  #   user && permission in user.permissions
  # end
end