Class: RailsAIPromptable::Providers::GeminiProvider

Inherits:
BaseProvider
  • Object
show all
Defined in:
lib/rails_ai_promptable/providers/gemini_provider.rb

Instance Method Summary collapse

Constructor Details

#initialize(configuration) ⇒ GeminiProvider

Returns a new instance of GeminiProvider.



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# File 'lib/rails_ai_promptable/providers/gemini_provider.rb', line 9

def initialize(configuration)
  super
  @api_key = configuration.gemini_api_key || configuration.api_key
  @base_url = configuration.gemini_base_url || "https://generativelanguage.googleapis.com/v1beta"
  @timeout = configuration.timeout
end

Instance Method Details

#generate(prompt:, model:, temperature:, format:) ⇒ Object 



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# File 'lib/rails_ai_promptable/providers/gemini_provider.rb', line 16

def generate(prompt:, model:, temperature:, format:)
  # Gemini uses the API key as a query parameter
  uri = URI.parse("#{@base_url}/models/#{model}:generateContent?key=#{@api_key}")
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = uri.scheme == "https"
  http.read_timeout = @timeout

  request = Net::HTTP::Post.new(uri.request_uri, {
                                  "Content-Type" => "application/json"
                                })

  body = {
    contents: [{
      parts: [{ text: prompt }]
    }],
    generationConfig: {
      temperature: temperature,
      maxOutputTokens: 2048
    }
  }

  request.body = body.to_json

  response = http.request(request)
  parsed = JSON.parse(response.body)

  if response.code.to_i >= 400
    error_message = parsed.dig("error", "message") || "Unknown error"
    raise "Gemini API error: #{error_message}"
  end

  # Extract content from Gemini response
  parsed.dig("candidates", 0, "content", "parts", 0, "text")
rescue StandardError => e
  RailsAIPromptable.configuration.logger.error("[rails_ai_promptable] gemini error: #{e.message}")
  nil
end