module Erratum

# File lib/erratum.rb, line 30
def self.build(original_error, overrides = {})
  overrides           = overrides.symbolize_keys
  original_error_name = error_name(original_error)
  build_error_name    = mapped_error_name(original_error_name)
  build_error_class   = error_class(build_error_name)

  if original_error.is_a?(Class) &&
     original_error < ::Erratum::Error

    original_error.new(overrides)
  elsif original_error.is_a?(String)
    build_error_class.new(overrides)
  elsif original_error.is_a?(::Erratum::Error)
    original_source = original_error.source.symbolize_keys

    build_error_class.new(original_source.merge(overrides))
  elsif build_error_class.respond_to?(:convert)
    build_error_class.convert(original_error, overrides)
  elsif build_error_class < Exception &&
        build_error_class == original_error.class
    ::Erratum::Errors::RuntimeError.wrap(original_error)
  else
    ::Erratum::Errors::RuntimeError.new(
      message: "#{build_error_class.name}: #{original_error.inspect}",
    )
  end
end

# File lib/erratum/configuration.rb, line 51
def self.configuration
  Configuration.instance
end

# File lib/erratum/configuration.rb, line 47
def self.configure
  yield configuration
end

# File lib/erratum.rb, line 86
  def self.error_class(name)
    if const_defined?("::#{name}")
      Object.const_get(name)
    else
      Object.const_get("Erratum::Errors::#{name}")
    end
  rescue NameError => error
    Kernel.raise(
      error.exception(<<~HEREDOC.chomp.tr("\n", ' ')),
        Erratum could not find an error class with either the name "#{name}" or
        with the name "Erratum::Errors::#{name}". Please verify the spelling and
        that the class is loaded.
      HEREDOC
    )
  end

# File lib/erratum.rb, line 69
def self.error_name(error)
  if error.is_a?(String)
    error.gsub(/\A::/, '')
  elsif error.is_a? Class
    error.name
  else
    error.class.name
  end
end

# File lib/erratum.rb, line 63
def self.fail(error_type, **args)
  Kernel.fail build(error_type, **args)
end

# File lib/erratum.rb, line 79
def self.mapped_error_name(name)
  configuration
    .error_mappings
    .fetch(name, name)
    .gsub(/\A::/, '')
end

# File lib/erratum.rb, line 59
def self.raise(error_type, **args)
  Kernel.fail build(error_type, **args)
end