discourse-custom-wizard/lib/api/endpoint.rb

class CustomWizard::Api::Endpoint
  include ActiveModel::SerializerSupport

  attr_accessor :id,
                :name,
                :api_name,
                :method,
                :url,
                :content_type,
                :success_codes

  def initialize(api_name, data={})
    @api_name = api_name

    data.each do |k, v|
      self.send "#{k}=", v if self.respond_to?(k)
    end
  end

  def self.set(api_name, new_data)
    if new_data['id']
      data = self.get(api_name, new_data['id'], data_only: true)
      endpoint_id = new_data['id']
    else
      data = {}
      endpoint_id = SecureRandom.hex(3)
    end

    new_data.each do |k, v|
      data[k.to_sym] = v
    end

    PluginStore.set("custom_wizard_api_#{api_name}", "endpoint_#{endpoint_id}", data)

    self.get(api_name, endpoint_id)
  end

  def self.get(api_name, endpoint_id, opts={})
    return nil if !endpoint_id

    if data = PluginStore.get("custom_wizard_api_#{api_name}", "endpoint_#{endpoint_id}")
      if opts[:data_only]
        data
      else
        data[:id] = endpoint_id
        self.new(api_name, data)
      end
    else
      nil
    end
  end

  def self.remove(api_name)
    PluginStoreRow.where("plugin_name = 'custom_wizard_api_#{api_name}' AND key LIKE 'endpoint_%'").destroy_all
  end

  def self.list(api_name)
    PluginStoreRow.where("plugin_name LIKE 'custom_wizard_api_#{api_name}' AND key LIKE 'endpoint_%'")
      .map do |record|
        api_name = record['plugin_name'].sub("custom_wizard_api_", "")
        data = ::JSON.parse(record['value'])
        data[:id] = record['key'].split('_').last
        self.new(api_name, data)
      end
  end

  def self.request(user = Discourse.system_user, api_name, endpoint_id, body)
    endpoint = self.get(api_name, endpoint_id)
    auth_string = CustomWizard::Api::Authorization.authorization_string(api_name)
    content_type = endpoint.content_type
    
    headers = {}
    headers["Authorization"] = auth_string if auth_string
    headers["Content-Type"] = content_type if content_type

    connection = Excon.new(URI.parse(URI.encode(endpoint.url)).to_s, headers: headers)

    params = { method: endpoint.method }

    if body
      if content_type === "application/json"
        body = JSON.generate(body)
      elsif content_type === "application/x-www-form-urlencoded"
        body = URI.encode_www_form(body)
      end  
      
      params[:body] = body
    end

    response = connection.request(params)
    
    if endpoint.success_codes.include?(response.status)
      begin
        result = JSON.parse(response.body)
      rescue JSON::ParserError
        result = response.body
      end

      CustomWizard::Api::LogEntry.set(api_name, log_params(user, 'SUCCESS', endpoint.url))
      
      result
    else
      message = "API request failed"
      CustomWizard::Api::LogEntry.set(api_name, log_params(user, 'FAIL', endpoint.url, message))
      { error: message }
    end
  end
  
  def self.log_params(user, status, url, message = "")
    { time: Time.now, user_id: user.id, status: status, url: url, error: message }
  end
end