class ViteRuby::DevServerProxy

def file_in_vite_root?(path)
  path.include?('.') && # Check for extension, avoid filesystem if possible.
    config.vite_root_dir.join(path.start_with?('/') ? path[1..-1] : path).file?
end

def forward_to_vite_dev_server(env)
  rewrite_uri_for_vite(env)
  env['QUERY_STRING'] ||= ''
  env['HTTP_HOST'] = env['HTTP_X_FORWARDED_HOST'] = config.host
  env['HTTP_X_FORWARDED_SERVER'] = config.host_with_port
  env['HTTP_PORT'] = env['HTTP_X_FORWARDED_PORT'] = config.port.to_s
  env['HTTP_X_FORWARDED_PROTO'] = env['HTTP_X_FORWARDED_SCHEME'] = config.protocol
  env['HTTPS'] = env['HTTP_X_FORWARDED_SSL'] = 'off' unless config.https
  env['SCRIPT_NAME'] = ''
end

def initialize(app = nil, options = {})
  @vite_ruby = options.delete(:vite_ruby) || ViteRuby.instance
  options[:streaming] = false if config.mode == 'test' && !options.key?(:streaming)
  super
end

def normalize_uri(uri)
  uri
    .sub(HOST_WITH_PORT_REGEX, '/') # Hanami adds the host and port.
    .sub('.ts.js', '.ts') # Hanami's javascript helper always adds the extension.
    .sub(/\.(sass|scss|styl|stylus|less|pcss|postcss)\.css$/, '.\1') # Rails' stylesheet_link_tag always adds the extension.
end

def perform_request(env)
  if vite_should_handle?(env) && dev_server_running?
    forward_to_vite_dev_server(env)
    super(env)
  else
    @app.call(env)
  end
end

def rewrite_uri_for_vite(env)
  uri = env.fetch('REQUEST_URI') { [env['PATH_INFO'], env['QUERY_STRING']].reject { |str| str.to_s.strip.empty? }.join('?') }
  env['PATH_INFO'], env['QUERY_STRING'] = (env['REQUEST_URI'] = normalize_uri(uri)).split('?')
end

def vite_should_handle?(env)
  path = normalize_uri(env['PATH_INFO'])
  return true if path.start_with?(vite_url_prefix) # Vite asset
  return true if file_in_vite_root?(path) # Fallback if Vite can serve the file
end

def vite_url_prefix
  @vite_url_prefix ||= config.public_output_dir.empty? ? VITE_DEPENDENCY_PREFIX : "/#{ config.public_output_dir }/"
end