import pkg/chronos
import pkg/questionable/results

import ./state
import ./services/metrics
import ./services/dht
import ./component
import ./components/crawler
import ./components/timetracker
import ./components/nodestore
import ./components/dhtmetrics
import ./components/todolist

proc createComponents*(state: State): Future[?!seq[Component]] {.async.} =
  var components: seq[Component] = newSeq[Component]()

  without dht =? (await createDht(state)), err:
    return failure(err)

  without nodeStore =? createNodeStore(state), err:
    return failure(err)

  let
    metrics = createMetrics(state.config.metricsAddress, state.config.metricsPort)
    todoList = createTodoList(state)

  without dhtMetrics =? createDhtMetrics(state, metrics), err:
    return failure(err)

  components.add(dht)
  components.add(todoList)
  components.add(nodeStore)
  components.add(Crawler.new(state, dht, todoList))
  components.add(TimeTracker.new(state, nodeStore, dht))
  components.add(dhtMetrics)

  return success(components)