class Multiwoven::Integrations::Source::DatabricksModel::Client

def build_url(url, connection_config)
  format(url, databricks_host: connection_config[:databricks_host],
              endpoint_name: connection_config[:endpoint])
end

def check_connection(connection_config)
  connection_config = connection_config.with_indifferent_access
  url = build_url(DATABRICKS_HEALTH_URL, connection_config)
  response = Multiwoven::Integrations::Core::HttpClient.request(
    url,
    HTTP_GET,
    headers: auth_headers(connection_config[:token])
  )
  if success?(response)
    success_status
  else
    failure_status(nil)
  end
rescue StandardError => e
  ConnectionStatus.new(status: ConnectionStatusType["failed"], message: e.message).to_multiwoven_message
end

def discover(_connection_config = nil)
  catalog_json = read_json(CATALOG_SPEC_PATH)
  catalog = build_catalog(catalog_json)
  catalog.to_multiwoven_message
rescue StandardError => e
  handle_exception(e, {
                     context: "DATABRICKS MODEL:DISCOVER:EXCEPTION",
                     type: "error"
                   })
end

def process_response(response)
  if success?(response)
    data = JSON.parse(response.body)
    [RecordMessage.new(data: data, emitted_at: Time.now.to_i).to_multiwoven_message]
  else
    create_log_message("DATABRICKS MODEL:RUN_MODEL", "error", "request failed")
  end
end

def read(sync_config)
  connection_config = sync_config.source.connection_specification
  connection_config = connection_config.with_indifferent_access
  # The server checks the ConnectorQueryType.
  # If it's "ai_ml," the server calculates the payload and passes it as a query in the sync config model protocol.
  # This query is then sent to the AI/ML model.
  payload = JSON.parse(sync_config.model.query)
  run_model(connection_config, payload)
rescue StandardError => e
  handle_exception(e, {
                     context: "DATABRICKS MODEL:READ:EXCEPTION",
                     type: "error"
                   })
end

def run_model(connection_config, payload)
  connection_config = connection_config.with_indifferent_access
  url = build_url(DATABRICKS_SERVING_URL, connection_config)
  token = connection_config[:token]
  response = send_request(url, token, payload)
  process_response(response)
rescue StandardError => e
  handle_exception(e, context: "DATABRICKS MODEL:RUN_MODEL:EXCEPTION", type: "error")
end

def send_request(url, token, payload)
  Multiwoven::Integrations::Core::HttpClient.request(
    url,
    HTTP_POST,
    payload: payload,
    headers: auth_headers(token)
  )
end