144 lines
3.8 KiB
Ruby
144 lines
3.8 KiB
Ruby
# frozen_string_literal: true
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module DiscourseAi
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module AiBot
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module Tools
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class DallE < Tool
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def self.signature
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{
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name: name,
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description: "Renders images from supplied descriptions",
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parameters: [
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{
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name: "prompts",
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description:
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"The prompts used to generate or create or draw the image (5000 chars or less, be creative) up to 4 prompts",
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type: "array",
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item_type: "string",
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required: true,
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},
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{
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name: "aspect_ratio",
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description: "The aspect ratio (optional, square by default)",
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type: "string",
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required: false,
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enum: %w[tall square wide],
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},
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],
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}
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end
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def self.name
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"dall_e"
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end
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def prompts
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parameters[:prompts]
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end
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def aspect_ratio
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parameters[:aspect_ratio]
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end
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def chain_next_response?
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false
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end
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def invoke
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# max 4 prompts
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max_prompts = prompts.take(4)
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progress = prompts.first
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yield(progress)
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results = nil
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# this ensures multisite safety since background threads
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# generate the images
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api_key = SiteSetting.ai_openai_api_key
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api_url = SiteSetting.ai_openai_dall_e_3_url
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size = "1024x1024"
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if aspect_ratio == "tall"
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size = "1024x1792"
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elsif aspect_ratio == "wide"
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size = "1792x1024"
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end
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threads = []
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max_prompts.each_with_index do |prompt, index|
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threads << Thread.new(prompt) do |inner_prompt|
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attempts = 0
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begin
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DiscourseAi::Inference::OpenAiImageGenerator.perform!(
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inner_prompt,
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size: size,
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api_key: api_key,
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api_url: api_url,
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)
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rescue => e
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attempts += 1
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sleep 2
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retry if attempts < 3
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Discourse.warn_exception(
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e,
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message: "Failed to generate image for prompt #{prompt}",
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)
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nil
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end
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end
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end
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break if threads.all? { |t| t.join(2) } while true
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results = threads.filter_map(&:value)
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if results.blank?
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return { prompts: max_prompts, error: "Something went wrong, could not generate image" }
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end
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uploads = []
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results.each_with_index do |result, index|
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result[:data].each do |image|
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Tempfile.create("v1_txt2img_#{index}.png") do |file|
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file.binmode
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file.write(Base64.decode64(image[:b64_json]))
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file.rewind
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uploads << {
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prompt: image[:revised_prompt],
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upload:
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UploadCreator.new(
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file,
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"image.png",
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for_private_message: context[:private_message],
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).create_for(bot_user.id),
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}
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end
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end
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end
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self.custom_raw = <<~RAW
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[grid]
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#{
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uploads
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.map { |item| "![#{item[:prompt].gsub(/\|\'\"/, "")}](#{item[:upload].short_url})" }
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.join(" ")
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}
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[/grid]
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RAW
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{ prompts: uploads.map { |item| item[:prompt] } }
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end
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protected
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def description_args
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{ prompt: prompts.first }
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end
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end
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end
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end
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end
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