Module: Ask::Terminal::Renderer

Defined in:
lib/ask/terminal/renderer.rb

Overview

Renders canonical session events as ANSI terminal output. Accepts either a wire hash ({ "type" =>, "seq" =>, "payload" => }) or an Ask::SessionProtocol::Events::Event.

Constant Summary collapse

DIM =

ANSI helpers.

"\e[2m"
CYAN = 
"\e[36m"
YELLOW = 
"\e[33m"
GREEN = 
"\e[32m"
RED = 
"\e[31m"
MAGENTA = 
"\e[35m"
RESET = 
"\e[0m"
MAX_OUTPUT_LINES =

How many lines of tool output to show inline.

20
MAX_ARG_CHARS = 
120

Class Method Summary collapse

Class Method Details

.render(event, io: $stdout) ⇒ Object

Render one event to io. Streaming deltas (model.streaming, tool.delta) print without a trailing newline; everything else prints a complete line.

Parameters:

  • event (Hash, Ask::SessionProtocol::Events::Event)
  • io (IO) (defaults to: $stdout) —

    output sink



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# File 'lib/ask/terminal/renderer.rb', line 30

def self.render(event, io: $stdout)
  hash = event.respond_to?(:to_h) ? event.to_h : event
  payload = hash["payload"] || {}

  case hash["type"]
  when "model.streaming"
    io.print payload["delta"].to_s
  when "model.thinking"
    io.print "#{DIM}#{payload["delta"]}#{RESET}"
  when "tool.use"
    args = truncate(JSON.generate(payload["args"]))
    io.puts "\n#{CYAN}› #{payload["name"]}#{args.empty? ? "" : " #{args}"}#{RESET}"
  when "tool.delta"
    io.print payload["partial"].to_s
  when "tool.result"
    render_tool_result(payload, io)
  when "approval.required"
    io.puts "#{YELLOW}✋ #{payload["toolName"]} requires approval (#{payload["id"]})#{RESET}"
    io.puts "#{DIM}#{payload["message"]}#{RESET}" if payload["message"]
  when "approval.updated"
    mark = payload["status"] == "approved" ? "#{GREEN}✓#{RESET}" : "#{RED}✗#{RESET}"
    io.puts "#{mark} #{payload["status"]} (#{payload["id"]})"
  when "plan.proposed"
    io.puts "\n#{MAGENTA}📋 Plan proposal (#{payload["id"]}):#{RESET}"
    io.puts payload["plan"].to_s
    io.puts "#{DIM}plan/approve or plan/reject to continue#{RESET}"
  when "plan.approved"
    io.puts "#{GREEN}✓ plan approved#{RESET}"
  when "plan.rejected"
    io.puts "#{RED}✗ plan rejected#{RESET}"
  when "todos.updated"
    render_todos(payload["todos"], io)
  when "turn.started"
    io.puts "#{DIM}── turn started ──#{RESET}"
  when "turn.completed"
    io.puts "\n#{DIM}── turn completed ──#{RESET}"
  when "turn.failed"
    io.puts "\n#{RED}✗ turn failed: #{payload["error"]}#{RESET}"
  when "turn.aborted"
    io.puts "\n#{DIM}── turn aborted ──#{RESET}"
  when "error"
    io.puts "#{RED}⚠ #{payload["error"]}#{RESET}"
  when "session.created"
    io.puts "#{DIM}session #{payload["sessionId"]} created#{RESET}"
  when "session.ended"
    io.puts "#{DIM}session #{payload["sessionId"]} ended (#{payload["reason"]})#{RESET}"
  end
  io.flush
end