Add request_reviews and update Mergify actions

.mergify.yml

@@ -8,7 +8,7 @@
 pull_request_rules:
 - name: merge scala-steward's PRs
   conditions:
-  - author=scala-steward
+  - author=typelevel-steward[bot]
   - or:
     - body~=labels:.*early-semver-patch
     - body~=labels:.*early-semver-minor
@@ -168,3 +168,10 @@ pull_request_rules:
       add:
       - versioning
       remove: []
+- name: assign scala-steward's PRs for review
+  conditions:
+  - author=typelevel-steward[bot]
+  actions:
+    request_reviews:
+      users:
+      - armanbilge

build.sbt

@@ -11,9 +11,18 @@ ThisBuild / developers := List(
   tlGitHubDev("djspiewak", "Daniel Spiewak")
 )
 
-ThisBuild / mergifyStewardConfig ~= { _.map(_.copy(mergeMinors = true)) }
+ThisBuild / mergifyStewardConfig ~= {
+  _.map(_.copy(mergeMinors = true, author = "typelevel-steward[bot]"))
+}
 ThisBuild / mergifySuccessConditions += MergifyCondition.Custom("#approved-reviews-by>=1")
 ThisBuild / mergifyLabelPaths += { "docs" -> file("docs") }
+ThisBuild / mergifyPrRules += MergifyPrRule(
+  "assign scala-steward's PRs for review",
+  List(MergifyCondition.Custom("author=typelevel-steward[bot]")),
+  List(
+    MergifyAction.RequestReviews.fromUsers("armanbilge")
+  )
+)
 
 ThisBuild / scalafixDependencies ++= Seq(
   "com.github.liancheng" %% "organize-imports" % "0.6.0"

mergify/src/main/scala/org/typelevel/sbt/mergify/MergifyAction.scala

@@ -16,8 +16,12 @@
 
 package org.typelevel.sbt.mergify
 
-import io.circe.Encoder
+import cats.data._
+import cats.syntax.all._
+import io.circe._
 import io.circe.syntax._
+import org.typelevel.sbt.mergify.MergifyAction.RequestReviews._
+import sbt.librarymanagement.Developer
 
 sealed abstract class MergifyAction {
   private[mergify] def name = getClass.getSimpleName.toLowerCase
@@ -28,6 +32,8 @@ object MergifyAction {
   implicit def encoder: Encoder[MergifyAction] = Encoder.instance {
     case merge: Merge => merge.asJson
     case label: Label => label.asJson
+    case requestReviews: RequestReviews => requestReviews.asJson
+    case Update => Update.asJson
     case _ => sys.error("should not happen")
   }
 
@@ -57,6 +63,102 @@ object MergifyAction {
       }
   }
 
+  class RequestReviews private (
+      private val users: Option[OptionallyWeighted],
+      private val teams: Option[OptionallyWeighted],
+      private val usersFromTeams: Option[OptionallyWeighted],
+      private val randomCount: Option[Int])
+      extends MergifyAction {
+    override private[mergify] def name = "request_reviews"
+
+    private def copy(
+        users: Option[OptionallyWeighted] = users,
+        teams: Option[OptionallyWeighted] = teams,
+        usersFromTeams: Option[OptionallyWeighted] = usersFromTeams,
+        randomCount: Option[Int] = randomCount): RequestReviews =
+      new RequestReviews(users, teams, usersFromTeams, randomCount) {}
+
+    def withUsers(user: String, users: String*): RequestReviews =
+      copy(users = Unweighted(NonEmptyList.of(user, users: _*)).some)
+
+    def withUsers(user: (String, Int), users: (String, Int)*): RequestReviews =
+      copy(users = Weighted(NonEmptyList.of(user, users: _*)).some)
+
+    def withTeams(team: String, teams: String*): RequestReviews =
+      copy(teams = Unweighted(NonEmptyList.of(team, teams: _*)).some)
+
+    def withTeams(team: (String, Int), teams: (String, Int)*): RequestReviews =
+      copy(teams = Weighted(NonEmptyList.of(team, teams: _*)).some)
+
+    def withUsersFromTeams(team: String, teams: String*): RequestReviews =
+      copy(usersFromTeams = Unweighted(NonEmptyList.of(team, teams: _*)).some)
+
+    def withUsersFromTeams(team: (String, Int), teams: (String, Int)*): RequestReviews =
+      copy(usersFromTeams = Weighted(NonEmptyList.of(team, teams: _*)).some)
+
+    def withRandomCount(count: Int): RequestReviews =
+      copy(randomCount = Option(count))
+
+    def withDevelopers(developers: List[Developer]): RequestReviews =
+      copy(users = NonEmptyList.fromList(developers.map(_.id)).map(Unweighted))
+  }
+
+  object RequestReviews {
+    def fromUsers(user: String, users: String*) =
+      new RequestReviews(Unweighted(NonEmptyList.of(user, users: _*)).some, None, None, None)
+    def fromUsers(user: (String, Int), users: (String, Int)*) =
+      new RequestReviews(Weighted(NonEmptyList.of(user, users: _*)).some, None, None, None)
+    def fromTeams(team: String, teams: String*) =
+      new RequestReviews(None, Unweighted(NonEmptyList.of(team, teams: _*)).some, None, None)
+    def fromTeams(team: (String, Int), teams: (String, Int)*) =
+      new RequestReviews(None, Weighted(NonEmptyList.of(team, teams: _*)).some, None, None)
+    def fromUsersOfTeams(team: String, teams: String*) =
+      new RequestReviews(None, None, Unweighted(NonEmptyList.of(team, teams: _*)).some, None)
+    def fromUsersOfTeams(team: (String, Int), teams: (String, Int)*) =
+      new RequestReviews(None, None, Weighted(NonEmptyList.of(team, teams: _*)).some, None)
+
+    def apply(developers: List[Developer]) =
+      new RequestReviews(
+        Unweighted(
+          developers
+            .map(_.id)
+            .toNel
+            .getOrElse(throw new RuntimeException("developers must be non-empty"))
+        ).some,
+        None,
+        None,
+        None)
+
+    implicit def encoder: Encoder[RequestReviews] =
+      Encoder.forProduct4("users", "teams", "users_from_teams", "random_count") {
+        requestReviews =>
+          (
+            requestReviews.users,
+            requestReviews.teams,
+            requestReviews.usersFromTeams,
+            requestReviews.randomCount
+          )
+      }
+
+    private sealed trait OptionallyWeighted
+    private case class Weighted(value: NonEmptyList[(String, Int)]) extends OptionallyWeighted
+    private case class Unweighted(value: NonEmptyList[String]) extends OptionallyWeighted
+
+    private object OptionallyWeighted {
+      implicit val encoder: Encoder[OptionallyWeighted] = {
+        case Weighted(value) => value.asJson
+        case Unweighted(value) => value.asJson
+      }
+    }
+  }
+
+  object Update extends MergifyAction {
+    override private[mergify] def name = "update"
+
+    implicit def encoder: Encoder[Update.type] =
+      Encoder[JsonObject].contramap(_ => JsonObject.empty)
+  }
+
   private[this] object Dummy extends MergifyAction
 
 }