class Propshaft::Server

# File lib/propshaft/server.rb, line 5
def initialize(app, assembly)
  @app = app
  @assembly = assembly
end

# File lib/propshaft/server.rb, line 10
def call(env)
  execute_cache_sweeper_if_updated

  path = env["PATH_INFO"]
  method = env["REQUEST_METHOD"]

  if (method == "GET" || method == "HEAD") && path.start_with?(@assembly.prefix)
    path, digest = extract_path_and_digest(path)

    if (asset = @assembly.load_path.find(path)) && asset.fresh?(digest)
      compiled_content = asset.compiled_content

      [
        200,
        {
          Rack::CONTENT_LENGTH  => compiled_content.length.to_s,
          Rack::CONTENT_TYPE    => asset.content_type.to_s,
          VARY                  => "Accept-Encoding",
          Rack::ETAG            => "\"#{asset.digest}\"",
          Rack::CACHE_CONTROL   => "public, max-age=31536000, immutable"
        },
        method == "HEAD" ? [] : [ compiled_content ]
      ]
    else
      [ 404, { Rack::CONTENT_TYPE => "text/plain", Rack::CONTENT_LENGTH => "9" }, [ "Not found" ] ]
    end
  else
    @app.call(env)
  end
end

# File lib/propshaft/server.rb, line 41
def inspect
  self.class.inspect
end

# File lib/propshaft/server.rb, line 59
def execute_cache_sweeper_if_updated
  if @assembly.config.sweep_cache
    @assembly.load_path.cache_sweeper.execute_if_updated
  end
end

# File lib/propshaft/server.rb, line 46
def extract_path_and_digest(path)
  path = path.delete_prefix(@assembly.prefix)
  path = Rack::Utils.unescape(path)

  Propshaft::Asset.extract_path_and_digest(path)
end