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path: root/app/controllers/Sale.scala
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package controllers

import org.omg.CosNaming._BindingIteratorImplBase
import play.api._
import play.api.data._
import play.api.data.Forms._
import play.api.mvc._

import play.api.db.slick._
import play.api.db.slick.Config.driver.simple._
import play.api.Play.current

import scala.concurrent.Future

import models._


case class SaleData(endDate: java.sql.Date,
                    name: String,
                    shortDescription: String,
                    longDescription: String,
                    initialPrice: BigDecimal)

case class BidData(offer: BigDecimal)

object Sale extends Controller {

  def sales = Auth { implicit request =>
    DB.withSession { implicit session =>
      val currentDateTime = new java.sql.Timestamp((new java.util.Date).getTime)
      val sales = Views.Sales.filter(_.endDate > currentDateTime).sortBy(_.endDate.asc).run

      Ok(views.html.pages.sales.currentSales(sales))
    }
  }

  val saleForm = Form(
    mapping(
      "endDate" -> sqlDate,
      "name" -> nonEmptyText(minLength = 5, maxLength = 20),
      "shortDescription" -> nonEmptyText(minLength = 10, maxLength = 30),
      "longDescription" -> nonEmptyText,
      "initialPrice" -> bigDecimal(precision = 8, scale = 2)
    )(SaleData.apply)(SaleData.unapply)
  )

  def sell = Auth { implicit request =>
    if (request.account.isEmpty) {
      Redirect(routes.Authentication.login())
        .flashing("error" -> "Authentication required")
    } else {
      Ok(views.html.pages.sales.sellForm(saleForm))
    }
  }

  def sellSubmit = Auth { implicit request =>
    if (request.account.isEmpty) {
      Redirect(routes.Authentication.login())
        .flashing("error" -> "Authentication required")
    } else {
      DB.withSession { implicit session =>
        saleForm.bindFromRequest.fold(
          formWithErrors => {
            BadRequest(views.html.pages.sales.sellForm(formWithErrors))
          },
          validForm => {

            val items = Tables.Items returning Tables.Items.map(_.uuid)
            val uuid = items += Tables.Item(
              userUuid = request.account.get.userUuid.get,
              startDate = new java.sql.Timestamp(new java.util.Date().getTime),
              endDate = new java.sql.Timestamp(validForm.endDate.getTime),
              itemName = validForm.name,
              shortDesc = validForm.shortDescription,
              longDesc = validForm.longDescription,
              initialPrice = validForm.initialPrice
            )

            Redirect(routes.Application.index())
              .flashing("success" -> "Your item is now on sale.")

          }
        )
      }
    }
  }

  val bidForm = Form(
    mapping(
      "offer" -> bigDecimal(precision = 8, scale = 2)
    )(BidData.apply)(BidData.unapply)
  )

  def item(itemUuid: String) = Auth { implicit request =>
    DB.withSession { implicit session =>
      val item = Some(Tables.Items.filter(_.uuid === itemUuid).first)

      if (item.isEmpty) {
        Redirect(routes.Sale.sales())
          .flashing("error" -> "Item not found")
      } else {
        val seller = Tables.Users.filter(_.uuid === item.get.userUuid).first
        val bids = Tables.Bids.filter(_.itemUuid === item.get.uuid).sortBy(_.bidDate.desc)
        val bidders = Tables.Users
        val bidsWithBidders = (bids join bidders on (_.userUuid === _.uuid)).run
        Ok(views.html.pages.sales.itemPage(item.get, seller, bidsWithBidders, bidForm))
      }
    }
  }

  def bidSubmit(itemUuid: String) = Auth { implicit request =>
    if (request.account.isEmpty) {
      Redirect(routes.Authentication.login())
        .flashing("error" -> "Authentication required")
    } else {
      DB.withSession { implicit session =>
        val item = Some(Tables.Items.filter(_.uuid === itemUuid).first)
        val currentTimestamp = new java.sql.Timestamp((new java.util.Date).getTime)

        if (item.isEmpty) {
          Redirect(routes.Sale.sales())
            .flashing("error" -> "Item not found")
        } else if (item.get.endDate before currentTimestamp) {
          Redirect(routes.Sale.item(itemUuid))
            .flashing("error" -> "This sale has already ended")
        } else {

          bidForm.bindFromRequest.fold(
            formsWithErrors => {
              Redirect(routes.Sale.item(itemUuid))
                .flashing("error" -> "Invalid bid")
            },
            validForm => {

              val bids = Tables.Bids.filter(_.itemUuid === itemUuid).sortBy(_.bidDate.desc).run
              val offersEnough = validForm.offer > item.get.initialPrice && (bids.isEmpty || validForm.offer > bids.head.offer)

              val userEquity = Views.Accounts.filter(_.userUuid === request.account.get.userUuid).map(_.equity).first.get
              val enoughFunds = validForm.offer < userEquity

              if (!enoughFunds) {
                Redirect(routes.Sale.item(itemUuid))
                  .flashing("error" -> "You are too poor!")
              } else if (!offersEnough) {
                Redirect(routes.Sale.item(itemUuid))
                  .flashing("error" -> "Please offer more.")
              } else {
                Tables.Bids += new Tables.Bid(
                  itemUuid = itemUuid,
                  userUuid = request.account.get.userUuid.get,
                  bidDate = currentTimestamp,
                  offer = validForm.offer
                )

                Redirect(routes.Sale.item(itemUuid))
                  .flashing("success" -> "Thanks!")
              }
            }
          )

        }

      }
    }
  }

}