package controllers

import play.api.libs.json._
import play.api.mvc._
import scala.collection.breakOut

import lila.api.Context
import lila.app._
import lila.common.LightUser.lightUserWrites
import lila.pref.JsonView._
import lila.i18n.{ I18nKeys, I18nLangPicker, enLang }

object Dasher extends LilaController {

  private def translations(implicit ctx: Context) = Env.i18n.jsDump.keysToObject(
    ctx.isAnon.fold(
      List(
        I18nKeys.signIn,
        I18nKeys.signUp
      ),
      List(
        I18nKeys.profile,
        I18nKeys.inbox,
        I18nKeys.preferences,
        I18nKeys.logOut
      )
    ) ::: List(
        I18nKeys.networkLagBetweenYouAndLichess,
        I18nKeys.timeToProcessAMoveOnLichessServer,
        I18nKeys.sound,
        I18nKeys.background,
        I18nKeys.boardGeometry,
        I18nKeys.boardTheme,
        I18nKeys.boardSize,
        I18nKeys.pieceSet
      ), ctx.lang
  ) ++ Env.i18n.jsDump.keysToObject(
      // the language settings should never be in a totally foreign language
      List(I18nKeys.language),
      if (I18nLangPicker.allFromRequestHeaders(ctx.req).has(ctx.lang)) ctx.lang
      else I18nLangPicker.bestFromRequestHeaders(ctx.req) | enLang
    )

  def get = Open { implicit ctx =>
    negotiate(
      html = notFound,
      api = _ => Ok {
      Json.obj(
        "user" -> ctx.me.map(_.light),
        "lang" -> Json.obj(
          "current" -> ctx.lang.code,
          "accepted" -> I18nLangPicker.allFromRequestHeaders(ctx.req).map(_.code)
        ),
        "sound" -> Json.obj(
          "list" -> lila.pref.SoundSet.list.map { set =>
            s"${set.key} ${set.name}"
          }
        ),
        "background" -> Json.obj(
          "current" -> ctx.currentBg,
          "image" -> ctx.pref.bgImgOrDefault
        ),
        "board" -> Json.obj(
          "is3d" -> ctx.pref.is3d,
          "zoom" -> ctx.zoom
        ),
        "theme" -> Json.obj(
          "d2" -> Json.obj(
            "current" -> ctx.currentTheme.name,
            "list" -> lila.pref.Theme.all.map(_.name)
          ),
          "d3" -> Json.obj(
            "current" -> ctx.currentTheme3d.name,
            "list" -> lila.pref.Theme3d.all.map(_.name)
          )
        ),
        "piece" -> Json.obj(
          "d2" -> Json.obj(
            "current" -> ctx.currentPieceSet.name,
            "list" -> lila.pref.PieceSet.all.map(_.name)
          ),
          "d3" -> Json.obj(
            "current" -> ctx.currentPieceSet3d.name,
            "list" -> lila.pref.PieceSet3d.all.map(_.name)
          )
        ),
        "kid" -> ctx.me ?? (_.kid),
        "coach" -> isGranted(_.Coach),
        "i18n" -> translations
      )
    } fuccess
    )
  }
}