Class: KairosMcp::Tools::ResourceRender

Inherits:
BaseTool
  • Object
show all
Defined in:
lib/kairos_mcp/tools/resource_render.rb

Constant Summary collapse

RENDER_TIMEOUT = 
30

Instance Method Summary collapse

Methods inherited from BaseTool

#harness_requirement, #initialize, #invoke_tool, #to_full_schema, #to_schema

Constructor Details

This class inherits a constructor from KairosMcp::Tools::BaseTool

Instance Method Details

#call(arguments) ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 79

def call(arguments)
  knowledge_name = arguments['knowledge']
  script_name = arguments['script']
  data = arguments['data']
  output_name = arguments['output']
  open_after = arguments['open'] || false

  return text_content("Error: knowledge is required") unless knowledge_name && !knowledge_name.empty?
  return text_content("Error: script is required") unless script_name && !script_name.empty?
  return text_content("Error: data is required") unless data && !data.empty?

  # Validate JSON
  begin
    JSON.parse(data)
  rescue JSON::ParserError => e
    return text_content("Error: invalid JSON data — #{e.message}")
  end

  # Resolve knowledge directory
  knowledge_dir = File.join(KairosMcp.knowledge_dir(user_context: @safety&.current_user), knowledge_name)
  unless File.directory?(knowledge_dir)
    return text_content("Error: knowledge '#{knowledge_name}' not found")
  end

  # Security: normalize script name to prevent path traversal
  safe_script = File.basename(script_name)
  script_path = File.join(knowledge_dir, 'scripts', safe_script)
  unless File.exist?(script_path)
    return text_content("Error: script '#{safe_script}' not found in #{knowledge_name}/scripts/")
  end

  # Derive output filename
  if output_name
    safe_output = File.basename(output_name)
  else
    safe_output = safe_script
                    .sub(/\Arender_/, '')
                    .sub(/\.rb\z/, '.html')
  end

  # Ensure assets/ directory exists
  assets_dir = File.join(knowledge_dir, 'assets')
  FileUtils.mkdir_p(assets_dir)

  # Execute script with data on stdin
  stdout, stderr, status = execute_script(script_path, data, knowledge_dir)

  unless status.success?
    error_msg = "Error: script exited with code #{status.exitstatus}"
    error_msg += "\n\nstderr:\n```\n#{stderr}\n```" unless stderr.empty?
    return text_content(error_msg)
  end

  if stdout.nil? || stdout.empty?
    return text_content("Error: script produced no output")
  end

  # Write output to assets/
  output_path = File.join(assets_dir, safe_output)
  AnthropicSkillParser.atomic_write(output_path, stdout)

  # Open in browser if requested
  if open_after
    system('open', output_path)
  end

  uri = "knowledge://#{knowledge_name}/assets/#{safe_output}"
  build_success_response(uri, output_path, stdout.bytesize, open_after)
end

#category ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 23

def category
  :resource
end

#description ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 17

def description
  'Execute a render script from a knowledge entry to generate an HTML asset. ' \
  'Scripts live in knowledge/{name}/scripts/ and output HTML to assets/. ' \
  'Data is passed via stdin as JSON. Convention: scripts named render_*.rb.'
end

#examples ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 31

def examples
  [
    {
      title: 'Generate review dashboard',
      code: 'resource_render(knowledge: "multi_llm_review_workflow", ' \
            'script: "render_dashboard.rb", data: "{...}", open: true)'
    },
    {
      title: 'Generate with custom output name',
      code: 'resource_render(knowledge: "multi_llm_review_workflow", ' \
            'script: "render_dashboard.rb", data: "{...}", output: "round2.html")'
    }
  ]
end

#input_schema ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 50

def input_schema
  {
    type: 'object',
    properties: {
      knowledge: {
        type: 'string',
        description: 'L1 knowledge entry name (e.g., "multi_llm_review_workflow")'
      },
      script: {
        type: 'string',
        description: 'Script filename in the knowledge scripts/ directory (e.g., "render_dashboard.rb")'
      },
      data: {
        type: 'string',
        description: 'JSON data to pass to the script via stdin'
      },
      output: {
        type: 'string',
        description: 'Output filename in assets/ (default: derived from script name, e.g., render_dashboard.rb -> dashboard.html)'
      },
      open: {
        type: 'boolean',
        description: 'Open the generated HTML in the default browser (default: false)'
      }
    },
    required: %w[knowledge script data]
  }
end

#name ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 13

def name
  'resource_render'
end

#related_tools ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 46

def related_tools
  %w[resource_list resource_read knowledge_get]
end

#usecase_tags ⇒ Object 



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# File 'lib/kairos_mcp/tools/resource_render.rb', line 27

def usecase_tags
  %w[render html visualize dashboard asset generate]
end