Class: Tina4::RackApp

Inherits:
Object
  • Object
show all
Defined in:
lib/tina4/rack_app.rb

Constant Summary collapse

STATIC_DIRS = 
%w[public src/public src/assets assets].freeze
FRAMEWORK_PUBLIC_DIR =

Framework’s own public directory (bundled static assets like the logo)

File.expand_path("public", __dir__).freeze

Instance Method Summary collapse

Constructor Details

#initialize(root_dir: Dir.pwd) ⇒ RackApp

Returns a new instance of RackApp.



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# File 'lib/tina4/rack_app.rb', line 28

def initialize(root_dir: Dir.pwd)
  @root_dir = root_dir
  # Pre-compute static roots at boot (not per-request)
  # Project dirs are checked first; framework's bundled public dir is the fallback
  project_roots = STATIC_DIRS.map { |d| File.join(root_dir, d) }
                             .select { |d| Dir.exist?(d) }
  fallback = Dir.exist?(FRAMEWORK_PUBLIC_DIR) ? [FRAMEWORK_PUBLIC_DIR] : []
  @static_roots = (project_roots + fallback).freeze

  # Shared WebSocket engine for route-based WS handling
  @websocket_engine = Tina4::WebSocket.new
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/tina4/rack_app.rb', line 41

def call(env)
  method = env["REQUEST_METHOD"]
  path = env["PATH_INFO"] || "/"
  request_start = Process.clock_gettime(Process::CLOCK_MONOTONIC)

  # Fast-path: CORS preflight. Real CORS preflight requests carry an
  # Origin header AND an Access-Control-Request-Method header — the
  # browser is asking "may I send this method?" before the actual
  # request. If neither is present, the OPTIONS is a plain protocol-
  # introspection request (link checker, monitoring probe, RFC 9110
  # §9.3.7 OPTIONS) and must fall through to the router's generic
  # Allow-header response. Otherwise we'd shadow the framework's own
  # OPTIONS support and force every operator to hand-register CORS
  # exceptions for every introspection client.
  if method == "OPTIONS" && (env["HTTP_ORIGIN"] || env["HTTP_ACCESS_CONTROL_REQUEST_METHOD"])
    return Tina4::CorsMiddleware.preflight_response(env)
  end

  # WebSocket upgrade — match against registered ws_routes
  if websocket_upgrade?(env)
    ws_result = Tina4::Router.find_ws_route(path)
    if ws_result
      ws_route, ws_params = ws_result
      return handle_websocket_upgrade(env, ws_route, ws_params)
    end
  end

  # Dev dashboard routes (handled before anything else)
  if path.start_with?("/__dev")
    # Block live-reload endpoint on the AI port — AI tools must get stable responses
    if path == "/__dev_reload" && env["tina4.ai_port"]
      return [404, { "content-type" => "text/plain" }, ["Not available on AI port"]]
    end
    dev_response = Tina4::DevAdmin.handle_request(env)
    return dev_response if dev_response
  end

  # Fast-path: API routes skip static file + swagger checks entirely
  unless path.start_with?("/api/")
    # Swagger
    if path == "/swagger" || path == "/swagger/"
      return serve_swagger_ui
    end
    if path == "/swagger/openapi.json"
      return serve_openapi_json
    end

    # Static files (only for non-API paths)
    static_response = try_static(path)
    return static_response if static_response
  end

  # Route matching
  result = Tina4::Router.match(method, path)
  if result
    route, path_params = result
    rack_response = handle_route(env, route, path_params)
    matched_pattern = route.path
  else
    # RFC 9110 conformance — before falling through to 404, check whether
    # the PATH is known to the router under any OTHER method.
    #   - OPTIONS request → 204 with Allow header (§9.3.7)
    #   - Any other method (PUT on GET-only, TRACE, CONNECT, etc.)
    #     → 405 with Allow header (§15.5.6 + §10.2.1)
    allowed = Tina4::Router.methods_allowed_for_path(path)
    if !allowed.empty?
      allow_header = allowed.join(", ")
      if method.to_s.upcase == "OPTIONS"
        rack_response = [204, { "allow" => allow_header, "content-length" => "0" }, [""]]
      else
        body = %({"error":"Method Not Allowed","path":"#{path}","method":"#{method}","allow":[#{allowed.map { |m| %("#{m}") }.join(",")}],"status":405})
        rack_response = [405, {
          "allow" => allow_header,
          "content-type" => "application/json",
          "content-length" => body.bytesize.to_s
        }, [body]]
      end
      matched_pattern = nil
    else
      rack_response = handle_404(path)
      matched_pattern = nil
    end
  end

  # RFC 9110 §9.3.2: a HEAD response MUST NOT include content. Strip
  # the body unconditionally and record what Content-Length the GET
  # would have sent. Cache validators / link checkers / monitoring
  # probes use that header to estimate sizes.
  if method.to_s.upcase == "HEAD"
    status, headers, body_parts = rack_response
    joined = body_parts.respond_to?(:join) ? body_parts.join : body_parts.to_s
    unless joined.empty?
      new_headers = headers.dup
      new_headers["content-length"] = joined.bytesize.to_s
      rack_response = [status, new_headers, [""]]
    end
  end

  # Capture request for dev inspector
  if dev_mode? && !path.start_with?("/__dev")
    duration_ms = ((Process.clock_gettime(Process::CLOCK_MONOTONIC) - request_start) * 1000).round(3)
    Tina4::DevAdmin.request_inspector.capture(
      method: method,
      path: path,
      status: rack_response[0],
      duration: duration_ms
    )
  end

  # Inject dev overlay button for HTML responses in dev mode
  if dev_mode? && !path.start_with?("/__dev")
    status, headers, body_parts = rack_response
    content_type = headers["content-type"] || ""
    if content_type.include?("text/html")
      request_info = {
        method: method,
        path: path,
        matched_pattern: matched_pattern || "(no match)",
      }
      joined = body_parts.join
      overlay = inject_dev_overlay(joined, request_info, ai_port: env["tina4.ai_port"])
      rack_response = [status, headers, [overlay]]
    end
  end

  # Save session and set cookie if session was used
  if result && defined?(rack_response)
    status, headers, body_parts = rack_response
    request_obj = env["tina4.request"]
    if request_obj&.instance_variable_get(:@session)
      sess = request_obj.session
      sess.save

      # Probabilistic garbage collection (~1% of requests)
      if rand(1..100) == 1
        begin
          sess.gc
        rescue StandardError
          # GC failure is non-critical — silently ignore
        end
      end

      sid = sess.id
      cookie_val = (env["HTTP_COOKIE"] || "")[/tina4_session=([^;]+)/, 1]
      if sid && sid != cookie_val
        ttl = Integer(ENV.fetch("TINA4_SESSION_TTL", 3600))
        headers["set-cookie"] = "tina4_session=#{sid}; Path=/; HttpOnly; SameSite=Lax; Max-Age=#{ttl}"
      end
      rack_response = [status, headers, body_parts]
    end
  end

  rack_response
rescue => e
  handle_500(e, env)
end

#handle(request) ⇒ Object

Dispatch a pre-built Request through the Rack app and return the Rack response triple. Useful for testing and embedding without starting an HTTP server.



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# File 'lib/tina4/rack_app.rb', line 200

def handle(request)
  env = request.env
  env["rack.input"].rewind if env["rack.input"].respond_to?(:rewind)
  call(env)
end