Class: Telegrama::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/telegrama/client.rb

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/telegrama/client.rb', line 8

def initialize(config = {})
  @config = config
  @fallback_attempts = 0
  @max_fallback_attempts = 2
end

Instance Method Details

#send_message(message, options = {}) ⇒ Object

Send a message with built-in error handling and fallbacks



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# File 'lib/telegrama/client.rb', line 15

def send_message(message, options = {})
  options = normalize_option_keys(options)

  # Allow chat ID override; fallback to config default
  chat_id = options.delete(:chat_id) || Telegrama.configuration.chat_id

  # Allow topic/thread override; fallback to config default.
  # Explicit nil means "send to the chat normally", even when a default topic is configured.
  message_thread_id = if options.key?(:message_thread_id)
                        options.delete(:message_thread_id)
                      else
                        Telegrama.configuration.message_thread_id
                      end
  validate_message_thread_id!(message_thread_id)

  # Get client options from config
  client_opts = Telegrama.configuration.client_options || {}
  client_opts = client_opts.merge(@config)

  # Default to MarkdownV2 parse mode unless explicitly overridden
  # Use key? to allow explicit nil override (for plain text without formatting)
  parse_mode = options.key?(:parse_mode) ? options[:parse_mode] : Telegrama.configuration.default_parse_mode

  # Allow runtime formatting options, merging with configured defaults.
  # Escape behavior must match the outgoing Telegram parse mode; otherwise
  # plain-text sends can display MarkdownV2 escape characters literally.
  formatting_opts = normalize_option_keys(options.delete(:formatting) || {})
  formatting_opts = formatting_options_for_parse_mode(parse_mode, formatting_opts)

  # Format the message text with our formatter
  formatted_message = Formatter.format(message, formatting_opts)

  # Reset fallback attempts counter
  @fallback_attempts = 0

  # Use a loop to implement fallback strategy
  begin
    # Prepare the request payload
    payload = {
      chat_id: chat_id,
      text: formatted_message,
      disable_web_page_preview: options.fetch(:disable_web_page_preview,
                                             Telegrama.configuration.disable_web_page_preview)
    }
    payload[:parse_mode] = parse_mode unless parse_mode.nil?
    payload[:message_thread_id] = message_thread_id unless message_thread_id.nil?

    # Additional options such as reply_markup can be added here
    payload.merge!(options.select { |k, _| [:reply_markup, :reply_to_message_id].include?(k) })

    # Make the API request
    response = perform_request(payload, client_opts)

    # If successful, reset fallback counter and return the response
    @fallback_attempts = 0
    return response

  rescue Error => e
    # Log the error for debugging
    begin
      Telegrama.log_error("Error sending message: #{e.message}")
    rescue => _log_error
      # Ignore logging errors in tests
    end

    # Track this attempt
    @fallback_attempts += 1

    # Try fallback strategies if we haven't exceeded the limit
    if @fallback_attempts < 3
      # If we were using MarkdownV2, try HTML as fallback
      if parse_mode == 'MarkdownV2' && @fallback_attempts == 1
        begin
          Telegrama.log_info("Falling back to HTML format")
        rescue => _log_error
          # Ignore logging errors
        end

        # Switch to HTML formatting
        parse_mode = 'HTML'
        formatting_opts = { escape_html: true, escape_markdown: false }
        formatted_message = Formatter.format(message, formatting_opts)

        # Retry the request
        retry

      # If HTML fails too, try plain text
      elsif parse_mode == 'HTML' && @fallback_attempts == 2
        begin
          Telegrama.log_info("Falling back to plain text format")
        rescue => _log_error
          # Ignore logging errors
        end

        # Switch to plain text (no special formatting)
        parse_mode = nil
        formatting_opts = { escape_markdown: false, escape_html: false }
        formatted_message = Formatter.format(message, formatting_opts)

        # Retry the request
        retry
      end
    end

    # If we've exhausted fallbacks or this is a different error, re-raise
    raise
  end
end