class Sprockets::Rails::HelperAssetResolvers::Environment

def asset_path(path, digest, allow_non_precompiled = false)
  # Digests enabled? Do the work to calculate the full asset path.
  if digest
    digest_path path, allow_non_precompiled
  # Otherwise, ask the Sprockets environment whether the asset exists
  # and check whether it's also precompiled for production deploys.
  elsif asset = find_asset(path)
    raise_unless_precompiled_asset asset.logical_path unless allow_non_precompiled
    path
  end
end

def digest_path(path, allow_non_precompiled = false)
  if asset = find_asset(path)
    raise_unless_precompiled_asset asset.logical_path unless allow_non_precompiled
    asset.digest_path
  end
end

def find_asset(path, options = {})
  @env[path, options]
end

def find_debug_asset(path)
  if asset = find_asset(path, pipeline: :debug)
    raise_unless_precompiled_asset asset.logical_path.sub('.debug', '')
    asset
  end
end

def initialize(view)
  raise ArgumentError, 'config.assets.resolve_with includes :environment, but app.assets is nil' unless view.assets_environment
  @env = view.assets_environment
  @precompiled_asset_checker = view.precompiled_asset_checker
end

def integrity(path)
  find_asset(path).try :integrity
end

def precompiled?(path)
  @precompiled_asset_checker.call path
end

def raise_unless_precompiled_asset(path)
  raise Helper::AssetNotPrecompiled.new(path) unless precompiled?(path)
end