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Ruby SDK

The official d3-ruby-client gem provides a high‑level interface to the D3 Business API.

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Installation

Add this line to your application’s Gemfile: 
gem 'd3-ruby-client'
And then execute: 
bundle install
Or install it yourself as: 
gem install d3-ruby-client

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Quick start

require 'd3_ruby_client'

# Initialize the client
client = D3RubyClient::Client.new(
  api_key: 'your-api-key-here',
  base_url: 'https://api.dragdropdo.com', # Optional, defaults to https://api.dragdropdo.com
  timeout: 30000 # Optional, defaults to 30000ms
)

# Upload a file
upload_result = client.upload_file(
  file: '/path/to/document.pdf',
  file_name: 'document.pdf',
  mime_type: 'application/pdf'
)

puts "File key: #{upload_result[:file_key]}"

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Initialization

D3RubyClient::Client.new(api_key:, base_url: nil, timeout: 30000, headers: {})
Parameters:
  • api_key (required) – your D3 API key.
  • base_url (optional) – API base URL, default: https://api.dragdropdo.com.
  • timeout (optional) – request timeout in ms, default: 30000.
  • headers (optional) – additional headers to send with every request.

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File upload

upload_file(file:, file_name:, mime_type: nil, parts: nil, on_progress: nil)
Parameters:
  • file (required) – file path string.
  • file_name (required) – original file name.
  • mime_type (optional) – MIME type (auto‑detected if omitted).
  • parts (optional) – number of upload parts (auto‑calculated).
  • on_progress (optional) – progress callback (Proc).
Example: 
result = client.upload_file(
  file: '/path/to/file.pdf',
  file_name: 'document.pdf',
  mime_type: 'application/pdf',
  on_progress: ->(progress) { puts "Upload: #{progress[:percentage]}%" }
)

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Supported operations

check_supported_operation(ext:, action: nil, parameters: nil)
Parameters:
  • ext (required) – file extension (e.g. pdf, jpg).
  • action (optional) – specific action (convert, compress, …).
  • parameters (optional) – parameters to validate (e.g. { convert_to: 'png' }).
Examples: 
# Get available actions for PDF
actions = client.check_supported_operation(ext: 'pdf')
puts actions[:available_actions]

# Check if convert to PNG is supported
supported = client.check_supported_operation(
  ext: 'pdf',
  action: 'convert',
  parameters: { convert_to: 'png' }
)
puts "Supported: #{supported[:supported]}"

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Create operations

create_operation(action:, file_keys:, parameters: nil, notes: nil)
Parameters:
  • action (required) – "convert" | "compress" | "merge" | "zip" | "share" | "lock" | "unlock" | "reset_password".
  • file_keys (required) – array of file keys from upload.
  • parameters (optional) – action‑specific parameters.
  • notes (optional) – user metadata.
Examples: 
# Convert PDF to PNG
client.create_operation(
  action: 'convert',
  file_keys: [upload_result[:file_key]],
  parameters: { convert_to: 'png' },
  notes: { userId: 'user-123' }
)

# Compress
client.create_operation(
  action: 'compress',
  file_keys: [upload_result[:file_key]],
  parameters: { compression_value: 'recommended' }
)

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Convenience helpers

The client exposes shorthand helpers: 
client.convert(file_keys:, convert_to:, notes: nil)
client.compress(file_keys:, compression_value: 'recommended', notes: nil)
client.merge(file_keys:, notes: nil)
client.zip(file_keys:, notes: nil)
client.share(file_keys:, notes: nil)
client.lock_pdf(file_keys:, password:, notes: nil)
client.unlock_pdf(file_keys:, password:, notes: nil)
client.reset_pdf_password(file_keys:, old_password:, new_password:, notes: nil)

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Status & polling

get_status(main_task_id:, file_task_id: nil)
poll_status(main_task_id:, file_task_id: nil, interval: 2000, timeout: 300000, on_update: nil)
Examples: 
# Single status fetch
status = client.get_status(main_task_id: 'task-123')

# Poll until completion
final_status = client.poll_status(
  main_task_id: 'task-123',
  interval: 2000,
  timeout: 300000,
  on_update: ->(status) { puts "Status: #{status[:operation_status]}" }
)

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Complete workflow example

require 'd3_ruby_client'

def process_file
  client = D3RubyClient::Client.new(
    api_key: ENV['D3_API_KEY'],
    base_url: 'https://api.dragdropdo.com'
  )

  begin
    # 1. Upload
    upload_result = client.upload_file(
      file: './document.pdf',
      file_name: 'document.pdf'
    )

    # 2. Check support
    supported = client.check_supported_operation(
      ext: 'pdf',
      action: 'convert',
      parameters: { convert_to: 'png' }
    )
    unless supported[:supported]
      raise 'Convert to PNG is not supported'
    end

    # 3. Create operation
    operation = client.convert(
      file_keys: [upload_result[:file_key]],
      convert_to: 'png',
      notes: { userId: 'user-123', source: 'api' }
    )

    # 4. Poll
    status = client.poll_status(
      main_task_id: operation[:main_task_id],
      interval: 2000
    )

    if status[:operation_status] == 'completed'
      status[:files_data].each do |file|
        puts "Download: #{file[:download_link]}"
      end
    end
  rescue D3RubyClient::D3APIError => e
    puts "API Error (#{e.status_code}): #{e.message}"
  rescue D3RubyClient::D3ValidationError => e
    puts "Validation Error: #{e.message}"
  rescue StandardError => e
    puts "Error: #{e.message}"
  end
end

process_file