forgeplus/app/services/webhook/issue_client.rb

class Webhook::IssueClient 

  include Webhook::Client

  attr_accessor :webhook, :issue, :sender, :event, :changes
  attr_accessor :webhook_task

  def initialize(webhook, issue, sender, event, changes={})
    @webhook = webhook 
    @issue = issue
    @sender = sender
    @event = event
    @changes = changes

    # 构建client参数
    super({
      uuid: SecureRandom.uuid, 
      event: @event, 
      webhook: @webhook, 
      payload_content: payload_content
    })
  end

  def payload_content
    case @event
    when "issues"
      issue_payload_content
    when "issue_assign"
      issue_assign_payload_content
    when "issue_label"
      issue_label_payload_content
    end
  end

  def issue_payload_content
    if @changes.blank?
      {
        "action": "opened",
        "number": @issue.project_issues_index,
        "issue": JSON.parse(@issue.to_builder.target!),
        "project": JSON.parse(@issue.project.to_builder.target!),
        "sender": JSON.parse(@sender.to_builder.target!)
      }
    else
      {
        "action": "edited",
        "number": @issue.project_issues_index,
        "changes": @changes,
        "issue": JSON.parse(@issue.to_builder.target!),
        "project": JSON.parse(@issue.project.to_builder.target!),
        "sender": JSON.parse(@sender.to_builder.target!)
      }
    end
  end

  def issue_assign_payload_content
    {
      "action": @changes["assigner_ids"].blank? ? "unassigned" : "assigned",
      "number": @issue.project_issues_index,
      "issue": JSON.parse(@issue.to_builder.target!),
      "project": JSON.parse(@issue.project.to_builder.target!),
      "sender": JSON.parse(@sender.to_builder.target!)
    }
  end 

  def issue_label_payload_content
    {
      "action": @changes["issue_tag_ids"].blank? ? "label_cleared" : "label_updated",
      "number": @issue.project_issues_index,
      "issue": JSON.parse(@issue.to_builder.target!),
      "project": JSON.parse(@issue.project.to_builder.target!),
      "sender": JSON.parse(@sender.to_builder.target!)
    }
  end 
end