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| 1 | +package quizz.data |
| 2 | + |
| 3 | +import cats.effect.{ Async, ContextShift, IO, Sync } |
| 4 | + |
| 5 | +import scala.language.higherKinds |
| 6 | +import better.files._ |
| 7 | +import cats.{ Applicative, FlatMap } |
| 8 | +import cats.effect.concurrent.Ref |
| 9 | +import doobie.Transactor |
| 10 | +import doobie.util.transactor.Transactor.Aux |
| 11 | +import quizz.db.DatabaseConfig |
| 12 | + |
| 13 | +trait MindmupStore[F[_]] { |
| 14 | + |
| 15 | + def store(name: String, content: String): F[Unit] |
| 16 | + |
| 17 | + def listNames(): F[Set[String]] |
| 18 | + |
| 19 | + def load(name: String): F[String] |
| 20 | + |
| 21 | + def delete(name: String): F[Unit] |
| 22 | +} |
| 23 | + |
| 24 | +object FileMindmupStore { |
| 25 | + def apply[F[_]](dir: File)(implicit ev: Sync[F]): F[FileMindmupStore[F]] = |
| 26 | + Sync[F].delay { |
| 27 | + dir.createDirectoryIfNotExists(createParents = true) |
| 28 | + new FileMindmupStore(dir) |
| 29 | + } |
| 30 | +} |
| 31 | + |
| 32 | +class FileMindmupStore[F[_]: Sync](dir: File) extends MindmupStore[F] { |
| 33 | + |
| 34 | + override def store(name: String, content: String): F[Unit] = |
| 35 | + Sync[F].delay { |
| 36 | + (dir / name).overwrite(content) |
| 37 | + } |
| 38 | + |
| 39 | + override def listNames(): F[Set[String]] = |
| 40 | + Sync[F].delay { |
| 41 | + dir.list |
| 42 | + .filter(_.isRegularFile) |
| 43 | + .map(_.name) |
| 44 | + .toSet |
| 45 | + } |
| 46 | + |
| 47 | + override def load(name: String): F[String] = |
| 48 | + Sync[F].delay { |
| 49 | + (dir / name).contentAsString |
| 50 | + } |
| 51 | + |
| 52 | + override def delete(name: String): F[Unit] = |
| 53 | + Sync[F].delay { |
| 54 | + val toDelete = dir / name |
| 55 | + toDelete.delete(swallowIOExceptions = false) |
| 56 | + } |
| 57 | +} |
| 58 | + |
| 59 | +object MemoryMindmupStore { |
| 60 | + def apply[F[_]]()(implicit ev: Sync[F]): F[MemoryMindmupStore[F]] = { |
| 61 | + val ref: F[Ref[F, Map[String, String]]] = |
| 62 | + Ref.of[F, Map[String, String]](Map.empty[String, String]) |
| 63 | + Applicative[F].map(ref)(r => new MemoryMindmupStore[F](r)) |
| 64 | + } |
| 65 | + |
| 66 | +} |
| 67 | + |
| 68 | +class MemoryMindmupStore[F[_]: Sync](ref: Ref[F, Map[String, String]]) extends MindmupStore[F] { |
| 69 | + override def store(name: String, content: String): F[Unit] = |
| 70 | + ref.update(x => x.updated(name, content)) |
| 71 | + |
| 72 | + override def listNames(): F[Set[String]] = |
| 73 | + FlatMap[F].flatMap(ref.get)(m => Applicative[F].pure(m.toList.map(_._1).toSet)) |
| 74 | + |
| 75 | + override def load(name: String): F[String] = |
| 76 | + FlatMap[F].flatMap(ref.get)(m => Applicative[F].pure(m(name))) |
| 77 | + |
| 78 | + override def delete(name: String): F[Unit] = |
| 79 | + FlatMap[F].flatMap(ref.update(v => v.removed(name)))(_ => Applicative[F].pure(())) |
| 80 | +} |
| 81 | + |
| 82 | +object DbMindMupStore { |
| 83 | + def apply[F[_]]( |
| 84 | + dbConfig: DatabaseConfig |
| 85 | + )(implicit ec2: Async[F], ev3: ContextShift[F]): F[DbMindMupStore[F]] = |
| 86 | + Async[F].delay { |
| 87 | + |
| 88 | + implicit val cs: ContextShift[IO] = IO.contextShift(scala.concurrent.ExecutionContext.global) |
| 89 | + |
| 90 | + val xa: Aux[F, Unit] = Transactor.fromDriverManager[F]( |
| 91 | + driver = "org.postgresql.Driver", |
| 92 | + url = s"jdbc:postgresql://${dbConfig.host}:${dbConfig.port}/${dbConfig.database}", |
| 93 | + user = dbConfig.user, |
| 94 | + pass = dbConfig.password |
| 95 | + ) |
| 96 | + |
| 97 | + new DbMindMupStore(xa) |
| 98 | + } |
| 99 | +} |
| 100 | + |
| 101 | +class DbMindMupStore[F[_]: Async: ContextShift](xa: Aux[F, Unit]) extends MindmupStore[F] { |
| 102 | + |
| 103 | + case class Mindmup(id: String, json: String) |
| 104 | + |
| 105 | + import doobie.quill.DoobieContext |
| 106 | + import io.getquill.Literal |
| 107 | + |
| 108 | + val dc = new DoobieContext.Postgres(Literal) // Literal naming scheme |
| 109 | + |
| 110 | + import dc._ |
| 111 | + import doobie.implicits._ |
| 112 | + |
| 113 | + override def store(name: String, json: String): F[Unit] = { |
| 114 | + val q: dc.Quoted[dc.Insert[Mindmup]] = quote { |
| 115 | + query[Mindmup] |
| 116 | + .insert(lift(Mindmup(name, json))) |
| 117 | + .onConflictUpdate(_.id)((t, e) => t.json -> e.json) |
| 118 | + } |
| 119 | + Applicative[F].map(run(q).transact(xa))(_ => ()) |
| 120 | + } |
| 121 | + |
| 122 | + override def listNames(): F[Set[String]] = { |
| 123 | + val q = quote { |
| 124 | + query[Mindmup].map(_.id) |
| 125 | + } |
| 126 | + Applicative[F].map(run(q).transact(xa))(_.toSet) |
| 127 | + } |
| 128 | + |
| 129 | + override def load(name: String): F[String] = { |
| 130 | + val q = quote { |
| 131 | + query[Mindmup].map(x => x.json) |
| 132 | + } |
| 133 | + Applicative[F].map(run(q).transact(xa))(_.head) |
| 134 | + } |
| 135 | + |
| 136 | + override def delete(name: String): F[Unit] = { |
| 137 | + val q = quote { |
| 138 | + query[Mindmup].filter(_.id == lift(name)).delete |
| 139 | + } |
| 140 | + Applicative[F].map(run(q).transact(xa))(_ => ()) |
| 141 | + } |
| 142 | +} |
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