ants.snapshots.snapshots-buildtime_3.0.0.7.source-code.SnapshotsBuild.scala Maven / Gradle / Ivy

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/*
 * Copyright 2024 Anton Sviridov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.indoorvivants.snapshots.build

import java.io.File
import java.io.FileWriter
import java.nio.file.Files

import scala.io.StdIn

import com.indoorvivants.snapshots.build.SnapshotsBuild.SnapshotIntegration.MUnit

object SnapshotsBuild {

  private object IO {
    def listFiles(loc: File) = {
      val files = List.newBuilder[File]

      Files
        .walk(loc.toPath())
        .forEach(path => {
          files += path.toFile()
        })

      files.result()
    }

    def writeLines(loc: File, lines: Seq[String]) = {
      val f = new FileWriter(loc)
      try
        lines.foreach(l => f.write(l + "\n"))
      finally
        f.close()
    }
  }

  sealed trait SnapshotAction extends Product with Serializable
  object SnapshotAction {
    case object Accept      extends SnapshotAction
    case object Discard     extends SnapshotAction
    case object Interactive extends SnapshotAction
  }

  sealed trait SnapshotIntegration extends Product with Serializable
  object SnapshotIntegration {
    case object MUnit extends SnapshotIntegration
  }

  def checkSnapshots(
      tmpLocation: File,
      projectId: String,
      action: SnapshotAction
  ) = {
    val bold  = scala.Console.BOLD
    val reset = scala.Console.RESET

    def makeBold(a: String) = bold + a + reset

    val legend =
      s"${makeBold("a")} - accept, ${makeBold("s")} - skip\nYour choice: "

    if (tmpLocation.exists() && tmpLocation.isDirectory()) {
      val modified = IO
        .listFiles(tmpLocation)

      if (modified.isEmpty) {
        System.err.println(
          s"No snapshots to check in [${projectId}]"
        )
      } else {

        modified
          .filter(_.getName.endsWith("__snap.new"))
          .foreach { f =>
            val diffFile = new File(f.toString() + ".diff")
            assert(diffFile.exists(), s"Diff file $diffFile not found")

            val diffContents = scala.io.Source
              .fromFile(diffFile)
              .getLines()
              .mkString(System.lineSeparator())

            val snapshotName :: destination :: newContentsLines =
              scala.io.Source.fromFile(f).getLines().toList

            def accept() = {
              val destinationFile = new File(destination)
              Files.createDirectories(
                destinationFile.getParentFile().toPath
              )
              IO.writeLines(destinationFile, newContentsLines)
              f.delete()
              diffFile.delete()
            }

            def discard() = {
              f.delete()
              diffFile.delete()
            }

            action match {
              case SnapshotAction.Interactive =>
                println(
                  s"Project ID: ${makeBold(projectId)}"
                )
                println(
                  s"Name: ${makeBold(snapshotName)}"
                )
                println(
                  s"Path: ${makeBold(destination.toString)}"
                )
                println(diffContents)

                println("\n\n")
                print(legend)

                val choice = StdIn.readLine().trim

                if (choice == "a") accept()
              case SnapshotAction.Accept =>
                accept()
              case SnapshotAction.Discard =>
                discard()
            }

          }
      }

    }
  }

  def generateSources(
      projectId: String,
      packageName: String,
      snapshotsDestination: File,
      sourceDestination: File,
      tmpLocation: File,
      forceOverwrite: Boolean = true
  ) = {
    Files.createDirectories(sourceDestination.getParentFile().toPath)

    IO.writeLines(
      sourceDestination,
      SnapshotsGenerate(
        snapshotsDestination,
        tmpLocation,
        packageName,
        forceOverwrite
      ).linesIterator.toList
    )

    Seq(sourceDestination)
  }

  def generateIntegrationSources(
      sourceDestination: File,
      integration: SnapshotIntegration,
      packageName: String
  ) = {
    Files.createDirectories(sourceDestination.getParentFile().toPath)

    val fileName = integration match {
      case MUnit => "MunitSnapshotsIntegration.scala"

    }

    val contents = scala.io.Source
      .fromInputStream(
        getClass().getResourceAsStream("/" + fileName)
      )
      .getLines()
      .toList
      .map(_.replace("$$PACKAGE$$", packageName))

    IO.writeLines(
      sourceDestination,
      contents
    )

    Seq(sourceDestination)
  }

  private def SnapshotsGenerate(
      path: File,
      tempPath: File,
      packageName: String,
      forceOverwrite: Boolean
  ) =
    s"""
     |package $packageName
     |object Snapshots extends com.indoorvivants.snapshots.Snapshots(location = "$path", tmpLocation = "$tempPath", forceOverwrite = $forceOverwrite)
      """.trim.stripMargin

}