2014-05-31 13:03:04 -06:00
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package lila.blog
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import io.prismic._
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import play.api.mvc.RequestHeader
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import play.api.libs.ws.WSClient
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import scala.concurrent.duration._
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2014-05-31 13:03:04 -06:00
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import lila.common.config.MaxPerPage
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import lila.common.paginator._
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final class BlogApi(
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asyncCache: lila.memo.AsyncCache.Builder,
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config: BlogConfig
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)(implicit ec: scala.concurrent.ExecutionContext, ws: WSClient) {
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private def collection = config.collection
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def recent(
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api: Api,
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page: Int,
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maxPerPage: MaxPerPage,
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ref: Option[String]
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): Fu[Option[Paginator[Document]]] =
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api
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.forms(collection)
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.ref(ref | api.master.ref)
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.orderings(s"[my.$collection.date desc]")
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.pageSize(maxPerPage.value)
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.page(page)
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.submit()
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.fold(_ => none, some _)
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.dmap2 { PrismicPaginator(_, page, maxPerPage) }
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def recent(
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prismic: BlogApi.Context,
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page: Int,
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maxPerPage: MaxPerPage,
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ref: Option[String]
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): Fu[Option[Paginator[Document]]] =
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recent(prismic.api, page, maxPerPage, ref)
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def one(api: Api, ref: Option[String], id: String): Fu[Option[Document]] =
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api
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.forms(collection)
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.query(s"""[[:d = at(document.id, "$id")]]""")
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.ref(ref | api.master.ref)
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.submit() map (_.results.headOption)
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def one(prismic: BlogApi.Context, id: String): Fu[Option[Document]] = one(prismic.api, prismic.ref.some, id)
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def byYear(prismic: BlogApi.Context, year: Int): Fu[List[MiniPost]] = {
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prismic.api
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.forms(collection)
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.ref(prismic.ref)
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.query(s"[[date.year(my.$collection.date, $year)]]")
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.orderings(s"[my.$collection.date desc]")
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.pageSize(100) // prismic max
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.submit()
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.fold(_ => Nil, _.results flatMap MiniPost.fromDocument(collection, "wide"))
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}
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def context(
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req: RequestHeader
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)(implicit linkResolver: (Api, Option[String]) => DocumentLinkResolver): Fu[BlogApi.Context] = {
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prismicApi map { api =>
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val ref = resolveRef(api) {
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req.cookies
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.get(Prismic.previewCookie)
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.map(_.value)
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.orElse(req.queryString get "ref" flatMap (_.headOption) filter (_.nonEmpty))
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}
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BlogApi.Context(api, ref | api.master.ref, linkResolver(api, ref))
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}
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}
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private def resolveRef(api: Api)(ref: Option[String]) =
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ref.map(_.trim).filterNot(_.isEmpty) map { reqRef =>
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api.refs.values.collectFirst {
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case r if r.label == reqRef => r.ref
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} getOrElse reqRef
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}
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private val prismicApiCache = asyncCache.single[Api](
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name = "blogApi.fetchPrismicApi",
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f = Api.get(config.apiUrl),
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expireAfter = _.ExpireAfterWrite(15 seconds)
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)
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def prismicApi = prismicApiCache.get
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}
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object BlogApi {
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def extract(body: Fragment.StructuredText): String =
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body.blocks
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.takeWhile(_.isInstanceOf[Fragment.StructuredText.Block.Paragraph])
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.take(2)
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.map {
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case Fragment.StructuredText.Block.Paragraph(text, _, _) => s"<p>$text</p>"
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case _ => ""
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}
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.mkString
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case class Context(api: Api, ref: String, linkResolver: DocumentLinkResolver) {
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def maybeRef = Option(ref).filterNot(_ == api.master.ref)
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}
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}
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