the-algorithm/product-mixer/component-library/src/main/scala/com/twitter/product_mixer/component_library/premarshaller/urt/builder/ShowCoverInstructionBuilder.scala
twitter-team ef4c5eb65e Twitter Recommendation Algorithm
Please note we have force-pushed a new initial commit in order to remove some publicly-available Twitter user information. Note that this process may be required in the future.
2023-03-31 17:36:31 -05:00

25 lines
960 B
Scala

package com.twitter.product_mixer.component_library.premarshaller.urt.builder
import com.twitter.product_mixer.core.model.marshalling.response.urt.ShowCoverInstruction
import com.twitter.product_mixer.core.model.marshalling.response.urt.Cover
import com.twitter.product_mixer.core.model.marshalling.response.urt.TimelineEntry
import com.twitter.product_mixer.core.pipeline.PipelineQuery
case class ShowCoverInstructionBuilder[Query <: PipelineQuery](
override val includeInstruction: IncludeInstruction[Query] = AlwaysInclude)
extends UrtInstructionBuilder[Query, ShowCoverInstruction] {
override def build(
query: Query,
entries: Seq[TimelineEntry]
): Seq[ShowCoverInstruction] = {
if (includeInstruction(query, entries)) {
// Currently only one cover is supported per response
entries.collectFirst {
case coverEntry: Cover => ShowCoverInstruction(coverEntry)
}.toSeq
} else {
Seq.empty
}
}
}