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package reading.component.index
import org.scalajs.dom
import rx._
import Ctx.Owner.Unsafe._
import scalatags.JsDom.all._
import scalacss.Defaults._
import scalacss.ScalatagsCss._
import reading.component.index.style.{ Menu => MenuStyle }
import reading.models._
import reading.utils.{ RxTag, RxAttr }
import reading.Route
object Menu {
def apply(books: Rx[Seq[Book]], filters: Var[Seq[Filter]], showFiltersMenu: Var[Boolean]): Frag =
RxTag { implicit context =>
div(
MenuStyle.render,
if (showFiltersMenu()) MenuStyle.show else "",
MenuStyle.menu,
header(showFiltersMenu, filters().length),
filters().find(_.kind == FilterKind.Grade) match {
case None => group(books, filters, "Classe", Grade.values.map(Filter.apply(_)))
case Some(grade) => group(books, filters, grade.name, Program.values.map(Filter.apply(_)), Some(grade))
},
group(books, filters, "Theme", Theme.values.map(Filter.apply(_))),
group(books, filters, "Genre", Genre.values.map(Filter.apply(_))),
group(books, filters, "Niveau", Level.values.map(Filter.apply(_))),
group(books, filters, "Période", Period.values.map(Filter.apply(_)))
)
}
def header(showFiltersMenu: Var[Boolean], count: Int): HtmlTag =
div(
MenuStyle.header,
span(
MenuStyle.close,
RxAttr(onclick, Rx(() => {
showFiltersMenu() = false
dom.document.body.style.overflowY = "scroll"
}))
),
"Filtrer",
if (count > 0) span(MenuStyle.count, count) else span("")
)
def group(
books: Rx[Seq[Book]],
filters: Var[Seq[Filter]],
name: String,
groupFilters: Seq[Filter],
parentFilter: Option[Filter] = None
)(
implicit
context: Ctx.Data
): Frag = {
val filtersWithCount = Rx {
groupFilters
.map(filter => (filter, Book.filter(books(), Seq(filter)).length))
.filter(_._2 > 0)
}
if (filtersWithCount().isEmpty)
span("")
else
div(
MenuStyle.filterGroup,
div(
MenuStyle.filterTitle,
parentFilter.map(filter =>
RxAttr(onclick, Rx(() => updateFilters(filters, Filter.remove(filters(), filter))))).getOrElse(""),
if (parentFilter.isDefined) MenuStyle.activeFilter else "",
name
),
div(
filtersWithCount().map {
case (filter, count) => {
val isActive = Filter.contains(filters(), filter)
button(
MenuStyle.filter,
if (isActive) MenuStyle.activeFilter else "",
RxAttr(onclick, Rx(() => updateFilters(
filters,
if (isActive) Filter.remove(filters(), filter) else filter +: filters()
))),
span(s"${filter.name.capitalize} ($count)")
)
}
}
)
)
}
private def updateFilters(filters: Var[Seq[Filter]], newFilters: Seq[Filter]): Unit = {
filters() = newFilters
Route.push(Route.Books(newFilters))
}
}
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