package tests

import scala.collection.mutable.Map
import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner
import org.scalatest.FlatSpec
import org.scalatest.Matchers
import org.scalamock.scalatest.MockFactory
import auction._
import auction.event._
import auction.bots.BidBot
import auction.event.MessagingEvent

/**
 * Tests for BidBot
 */
@RunWith(classOf[JUnitRunner])
class BotTest extends FlatSpec with Matchers with MockFactory {

  // Tämä luokka on avuksi harjoituksessa ja sitä ei tarvitse muuttaa:
  /**
   * A mock version of Auction to record outgoing bids.
   */
  class MockAuction extends Auction with Dispatcher {
    val makeBidRecorder = mockFunction[User, AuctionItem, Int, Boolean]('makeBid)

    override def makeBid(who: User, item: AuctionItem, amount: Int) = {
      // We use mockedMakeBid to record calls, but eventually call
      // the actual method. This kind of a method double is a _spy_.
      makeBidRecorder(who, item, amount)
      super.makeBid(who, item, amount)
    }
  }

  trait MockedDispatcher extends Dispatcher {
    val mf = mockFunction[AuctionEvent, Unit]('fireEvent)

    override def fireEvent(e: AuctionEvent) = {
      mf(e)
      super.fireEvent(e)
    }
  }

  "BidBot" should "make a bid if the owner has money and someone else makes a new best bid" in {
    val auction = new MockAuction()
    // Vinkki: Käytä testeissä auction.makeBidRecorder funktiota asettamalla sille
    // AuctionTest luokan tapaan odotuksia (expects) ennen kuin aloitat huutamisen.

    val james = new User("James", 123)
    val pete = new User("Pete", 456)
    val jane = new User("Jane", 789)
    val bot = new BidBot(pete, auction)

    //create the item
    val sofa = auction.addAuction(james, "blue sofa", 100, 5)

    //make bot follow the item
    bot.bidOnItem(sofa, 1000, 100)

    //add credits
    pete.buyCredits(1)


    // Tell the mock what to expect.
    inSequence {
      auction.makeBidRecorder.expects(jane, sofa, 300)
      auction.makeBidRecorder.expects(pete, sofa, 400)
      auction.makeBidRecorder.expects(jane, sofa, 500)
    }

    // Bid enough that it succeeds.
    auction.makeBid(jane, sofa, 300)
    auction.makeBid(jane, sofa, 500)
  }

  "BidBot" should "not bid if the owner has the best bid" in {
    val auction = new MockAuction()

    val james = new User("James", 123)
    val pete = new User("Pete", 456)
    val jane = new User("Jane", 789)
    val bot = new BidBot(pete, auction)

    val sofa = auction.addAuction(james, "blue sofa", 100, 5)
    bot.bidOnItem(sofa, 1000, 100)

    //add credits
    pete.buyCredits(10)


    // Tell the mock what to expect.
    inSequence {
      auction.makeBidRecorder.expects(jane, sofa, 300)
      auction.makeBidRecorder.expects(pete, sofa, 400)
      auction.makeBidRecorder.expects(pete, sofa, 500)
    }

    // Bid enough that it succeeds.
    auction.makeBid(jane, sofa, 300)
    auction.makeBid(pete, sofa, 500)
  }

  "BidBot" should "not bid over the limit" in {
    val auction = new MockAuction()

    val james = new User("James", 123)
    val pete = new User("Pete", 456)
    val jane = new User("Jane", 789)
    val bot = new BidBot(pete, auction)

    val sofa = auction.addAuction(james, "blue sofa", 100, 5)
    bot.bidOnItem(sofa, 1000, 100)

    //add credits
    pete.buyCredits(1)


    // Tell the mock what to expect.
    inSequence {
      auction.makeBidRecorder.expects(jane, sofa, 1100)
    }

    // Bid enough that it succeeds.
    auction.makeBid(jane, sofa, 1100)
  }

  "BidBot" should "not bid if the owner has no money" in {
    val auction = new MockAuction()

    val james = new User("James", 123)
    val pete = new User("Pete", 456)
    val jane = new User("Jane", 789)
    val bot = new BidBot(pete, auction)

    //create the item
    val sofa = auction.addAuction(james, "blue sofa", 100, 5)

    //make bot follow the item
    bot.bidOnItem(sofa, 1000, 100)


    // Tell the mock what to expect.
    inSequence {
      auction.makeBidRecorder.expects(jane, sofa, 300)
    }

    // Bid enough that it succeeds.
    auction.makeBid(jane, sofa, 300)
  }

  "BidBot" should "ask for more money after using the last credit" in {
    val auction = new Auction with MockedDispatcher
    // Vinkki: Voit joko kirjoittaa oman kuuntelijan dispatcherille tai korvata
    // dispatcherin kuten luokassa AuctionTest.

    auction.mf expects (where { x: AuctionEvent => x.isInstanceOf[NewAuction] })
    val james = new User("James", 123)
    val pete = new User("Pete", 456)
    val jane = new User("Jane", 789)
    val bot = new BidBot(pete, auction)

    //create the item
    val sofa = auction.addAuction(james, "blue sofa", 100, 5)

    //make bot follow the item
    bot.bidOnItem(sofa, 1000, 100)

    //add credits
    pete.buyCredits(1)


    // Tell the mock what to expect.
    auction.mf expects (where { x: AuctionEvent => x.isInstanceOf[BidRaised] }) repeat (1 to 10)
    auction.mf expects (where { x: AuctionEvent => x.isInstanceOf[BidBeaten] })repeat (1 to 10)
    auction.mf expects (where { x: AuctionEvent => x match {
         case m:MessagingEvent => m.receiver == pete
         case _ => false
      }})


    // Bid enough that it succeeds.
    auction.makeBid(jane, sofa, 300)
  }

}