import com.github.eikek.sbt.openapi._
import scala.sys.process._
import com.typesafe.sbt.site.SitePlugin
import com.typesafe.sbt.SbtGit.GitKeys._
import docspell.build._

val toolsPackage   = taskKey[Seq[File]]("Package the scripts/extension tools")
val elmCompileMode = settingKey[ElmCompileMode]("How to compile elm sources")

// --- Settings

val scalafixSettings = Seq(
  semanticdbEnabled := true,                        // enable SemanticDB
  semanticdbVersion := scalafixSemanticdb.revision, //"4.3.10", // use Scalafix compatible version
  ThisBuild / scalafixDependencies ++= Dependencies.organizeImports
)

val sharedSettings = Seq(
  organization := "com.github.eikek",
  scalaVersion := "2.13.3",
  scalacOptions ++= Seq(
    "-deprecation",
    "-encoding",
    "UTF-8",
    "-language:higherKinds",
    "-feature",
    "-Werror", // fail when there are warnings
    "-unchecked",
    // remove -byname-implicit, once https://github.com/scala/bug/issues/12072 is resolved
    "-Xlint:-byname-implicit,_",
    "-Wdead-code",
    "-Wunused",
    "-Wvalue-discard",
    "-Wnumeric-widen"
  ),
  LocalRootProject / toolsPackage := {
    val v      = version.value
    val logger = streams.value.log
    val dir    = (LocalRootProject / baseDirectory).value / "tools"
    packageTools(logger, dir, v)
  },
  scalacOptions in (Compile, console) :=
    (scalacOptions.value.filter(o => !o.contains("Xlint")) ++ Seq("-Xlint:_,-unused")),
  scalacOptions in (Test, console) :=
    (scalacOptions.value.filter(o => !o.contains("Xlint")) ++ Seq("-Xlint:_,-unused"))
) ++ scalafixSettings

val testSettings = Seq(
  testFrameworks += new TestFramework("minitest.runner.Framework"),
  libraryDependencies ++= Dependencies.miniTest ++ Dependencies.logging.map(_ % Test)
)

lazy val noPublish = Seq(
  publish := {},
  publishLocal := {},
  publishArtifact := false
)

val elmSettings = Seq(
  elmCompileMode := ElmCompileMode.Debug,
  Compile / resourceGenerators += Def.task {
    openapiCodegen.value
    compileElm(
      streams.value.log,
      (Compile / baseDirectory).value,
      (Compile / resourceManaged).value,
      name.value,
      version.value,
      elmCompileMode.value
    )
  }.taskValue,
  watchSources += Watched.WatchSource(
    (Compile / sourceDirectory).value / "elm",
    FileFilter.globFilter("*.elm"),
    HiddenFileFilter
  )
)

val webjarSettings = Seq(
  Compile / resourceGenerators += Def.task {
    copyWebjarResources(
      Seq((sourceDirectory in Compile).value / "webjar"),
      (Compile / resourceManaged).value,
      name.value,
      version.value,
      streams.value.log
    )
  }.taskValue,
  watchSources += Watched.WatchSource(
    (Compile / sourceDirectory).value / "webjar",
    FileFilter.globFilter("*.js") || FileFilter.globFilter("*.css"),
    HiddenFileFilter
  )
)

def debianSettings(cfgFile: String) =
  Seq(
    maintainer := "Eike Kettner <eike.kettner@posteo.de>",
    mappings in Universal += {
      val conf = (Compile / resourceDirectory).value / "reference.conf"
      if (!conf.exists)
        sys.error(s"File $conf not found")
      conf -> s"conf/$cfgFile.conf"
    },
    daemonUser := "docspell",
    bashScriptExtraDefines += s"""addJava "-Dconfig.file=$${app_home}/../conf/$cfgFile.conf""""
  )

val buildInfoSettings = Seq(
  buildInfoKeys := Seq[BuildInfoKey](
    name,
    version,
    scalaVersion,
    sbtVersion,
    gitHeadCommit,
    gitHeadCommitDate,
    gitUncommittedChanges,
    gitDescribedVersion
  ),
  buildInfoOptions += BuildInfoOption.ToJson,
  buildInfoOptions += BuildInfoOption.BuildTime
)

val openapiScalaSettings = Seq(
  openapiScalaConfig := ScalaConfig()
    .withJson(ScalaJson.circeSemiauto)
    .addMapping(CustomMapping.forType({ case TypeDef("LocalDateTime", _) =>
      TypeDef("Timestamp", Imports("docspell.common.Timestamp"))
    }))
    .addMapping(CustomMapping.forFormatType({
      case "ident" =>
        field => field.copy(typeDef = TypeDef("Ident", Imports("docspell.common.Ident")))
      case "collectivestate" =>
        field =>
          field.copy(typeDef =
            TypeDef("CollectiveState", Imports("docspell.common.CollectiveState"))
          )
      case "userstate" =>
        field =>
          field.copy(typeDef = TypeDef("UserState", Imports("docspell.common.UserState")))
      case "password" =>
        field =>
          field.copy(typeDef = TypeDef("Password", Imports("docspell.common.Password")))
      case "contactkind" =>
        field =>
          field.copy(typeDef =
            TypeDef("ContactKind", Imports("docspell.common.ContactKind"))
          )
      case "direction" =>
        field =>
          field.copy(typeDef = TypeDef("Direction", Imports("docspell.common.Direction")))
      case "priority" =>
        field =>
          field.copy(typeDef = TypeDef("Priority", Imports("docspell.common.Priority")))
      case "jobstate" =>
        field =>
          field.copy(typeDef = TypeDef("JobState", Imports("docspell.common.JobState")))
      case "loglevel" =>
        field =>
          field.copy(typeDef = TypeDef("LogLevel", Imports("docspell.common.LogLevel")))
      case "mimetype" =>
        field =>
          field.copy(typeDef = TypeDef("MimeType", Imports("docspell.common.MimeType")))
      case "itemstate" =>
        field =>
          field.copy(typeDef = TypeDef("ItemState", Imports("docspell.common.ItemState")))
      case "nertag" =>
        field =>
          field.copy(typeDef = TypeDef("NerTag", Imports("docspell.common.NerTag")))
      case "language" =>
        field =>
          field.copy(typeDef = TypeDef("Language", Imports("docspell.common.Language")))
      case "calevent" =>
        field =>
          field.copy(typeDef =
            TypeDef(
              "CalEvent",
              Imports(
                "com.github.eikek.calev.CalEvent",
                "com.github.eikek.calev.circe.CalevCirceCodec._"
              )
            )
          )
      case "glob" =>
        field => field.copy(typeDef = TypeDef("Glob", Imports("docspell.common.Glob")))
      case "customfieldtype" =>
        field => field.copy(typeDef = TypeDef("CustomFieldType", Imports("docspell.common.CustomFieldType")))
    }))
)

// --- Modules

// Base module, everything depends on this – including restapi and
// joexapi modules. This should aim to have least possible
// dependencies
val common = project
  .in(file("modules/common"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-common",
    libraryDependencies ++=
      Dependencies.fs2 ++
        Dependencies.circe ++
        Dependencies.loggingApi ++
        Dependencies.calevCore ++
        Dependencies.calevCirce ++
        Dependencies.pureconfig.map(_ % "optional")
  )

// Some example files for testing
// https://file-examples.com/index.php/sample-documents-download/sample-doc-download/
val files = project
  .in(file("modules/files"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-files",
    libraryDependencies ++=
      Dependencies.tika ++
        Dependencies.icu4j,
    Test / sourceGenerators += Def.task {
      val base  = (Test / resourceDirectory).value
      val files = (base ** (_.isFile)).pair(sbt.io.Path.relativeTo(base))
      val lines = files.toList.map(_._2).map { s =>
        val ident = s.replaceAll("[^a-zA-Z0-9_]+", "_")
        ident -> s"""val $ident = createUrl("${s}")"""
      }
      val content = s"""package docspell.files

object ExampleFiles extends ExampleFilesSupport {

${lines.map(_._2).mkString("\n")}

val all = List(
${lines.map(_._1).mkString(",\n")}
)

}
"""
      val target  = (Test / sourceManaged).value / "scala" / "ExampleFiles.scala"
      IO.createDirectory(target.getParentFile)
      IO.write(target, content)
      Seq(target)
    }.taskValue
  )
  .dependsOn(common)

val store = project
  .in(file("modules/store"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-store",
    libraryDependencies ++=
      Dependencies.doobie ++
        Dependencies.bitpeace ++
        Dependencies.tika ++
        Dependencies.fs2 ++
        Dependencies.databases ++
        Dependencies.flyway ++
        Dependencies.loggingApi ++
        Dependencies.emil ++
        Dependencies.emilDoobie ++
        Dependencies.calevCore ++
        Dependencies.calevFs2
  )
  .dependsOn(common)

val extract = project
  .in(file("modules/extract"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-extract",
    libraryDependencies ++=
      Dependencies.fs2 ++
        Dependencies.twelvemonkeys ++
        Dependencies.pdfbox ++
        Dependencies.poi ++
        Dependencies.commonsIO ++
        Dependencies.julOverSlf4j
  )
  .dependsOn(common, files % "compile->compile;test->test")

val convert = project
  .in(file("modules/convert"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-convert",
    libraryDependencies ++=
      Dependencies.flexmark ++
        Dependencies.twelvemonkeys
  )
  .dependsOn(common, files % "compile->compile;test->test")

val analysis = project
  .in(file("modules/analysis"))
  .disablePlugins(RevolverPlugin)
  .enablePlugins(NerModelsPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(NerModelsPlugin.nerClassifierSettings)
  .settings(
    name := "docspell-analysis",
    libraryDependencies ++=
      Dependencies.fs2 ++
        Dependencies.stanfordNlpCore
  )
  .dependsOn(common, files % "test->test")

val ftsclient = project
  .in(file("modules/fts-client"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-fts-client",
    libraryDependencies ++= Seq.empty
  )
  .dependsOn(common)

val ftssolr = project
  .in(file("modules/fts-solr"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-fts-solr",
    libraryDependencies ++=
      Dependencies.http4sClient ++
        Dependencies.http4sCirce ++
        Dependencies.http4sDsl ++
        Dependencies.circe
  )
  .dependsOn(common, ftsclient)

val restapi = project
  .in(file("modules/restapi"))
  .disablePlugins(RevolverPlugin)
  .enablePlugins(OpenApiSchema)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(openapiScalaSettings)
  .settings(
    name := "docspell-restapi",
    libraryDependencies ++=
      Dependencies.circe,
    openapiTargetLanguage := Language.Scala,
    openapiPackage := Pkg("docspell.restapi.model"),
    openapiSpec := (Compile / resourceDirectory).value / "docspell-openapi.yml",
    openapiStaticArgs := Seq("-l", "html2")
  )
  .dependsOn(common)

val joexapi = project
  .in(file("modules/joexapi"))
  .disablePlugins(RevolverPlugin)
  .enablePlugins(OpenApiSchema)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(openapiScalaSettings)
  .settings(
    name := "docspell-joexapi",
    libraryDependencies ++=
      Dependencies.circe ++
        Dependencies.http4sCirce ++
        Dependencies.http4sClient,
    openapiTargetLanguage := Language.Scala,
    openapiPackage := Pkg("docspell.joexapi.model"),
    openapiSpec := (Compile / resourceDirectory).value / "joex-openapi.yml"
  )
  .dependsOn(common)

val backend = project
  .in(file("modules/backend"))
  .disablePlugins(RevolverPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(
    name := "docspell-backend",
    libraryDependencies ++=
      Dependencies.loggingApi ++
        Dependencies.fs2 ++
        Dependencies.bcrypt ++
        Dependencies.http4sClient ++
        Dependencies.emil
  )
  .dependsOn(store, joexapi, ftsclient)

val webapp = project
  .in(file("modules/webapp"))
  .disablePlugins(RevolverPlugin)
  .enablePlugins(OpenApiSchema)
  .settings(sharedSettings)
  .settings(elmSettings)
  .settings(webjarSettings)
  .settings(
    name := "docspell-webapp",
    openapiTargetLanguage := Language.Elm,
    openapiPackage := Pkg("Api.Model"),
    openapiSpec := (restapi / Compile / resourceDirectory).value / "docspell-openapi.yml",
    openapiElmConfig := ElmConfig().withJson(ElmJson.decodePipeline)
  )

// --- Application(s)

val joex = project
  .in(file("modules/joex"))
  .enablePlugins(BuildInfoPlugin, JavaServerAppPackaging, DebianPlugin, SystemdPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(debianSettings("docspell-joex"))
  .settings(buildInfoSettings)
  .settings(
    name := "docspell-joex",
    description := "The joex component (job executor) for docspell which executes long-running tasks.",
    packageSummary := "Docspell Joex",
    packageDescription := description.value,
    libraryDependencies ++=
      Dependencies.fs2 ++
        Dependencies.http4sServer ++
        Dependencies.http4sCirce ++
        Dependencies.http4sDsl ++
        Dependencies.circe ++
        Dependencies.pureconfig ++
        Dependencies.emilTnef ++
        Dependencies.emilMarkdown ++
        Dependencies.emilJsoup ++
        Dependencies.jsoup ++
        Dependencies.yamusca ++
        Dependencies.loggingApi ++
        Dependencies.logging.map(_ % Runtime),
    addCompilerPlugin(Dependencies.kindProjectorPlugin),
    addCompilerPlugin(Dependencies.betterMonadicFor),
    buildInfoPackage := "docspell.joex",
    reStart / javaOptions ++= Seq(
      s"-Dconfig.file=${(LocalRootProject / baseDirectory).value / "local" / "dev.conf"}"
    )
  )
  .dependsOn(store, backend, extract, convert, analysis, joexapi, restapi, ftssolr)

val restserver = project
  .in(file("modules/restserver"))
  .enablePlugins(BuildInfoPlugin, JavaServerAppPackaging, DebianPlugin, SystemdPlugin)
  .settings(sharedSettings)
  .settings(testSettings)
  .settings(debianSettings("docspell-server"))
  .settings(buildInfoSettings)
  .settings(
    name := "docspell-restserver",
    description := "Docspell server providing the user interface and a REST Api.",
    packageSummary := "Docspell Rest server",
    packageDescription := description.value,
    libraryDependencies ++=
      Dependencies.http4sServer ++
        Dependencies.http4sCirce ++
        Dependencies.http4sDsl ++
        Dependencies.circe ++
        Dependencies.pureconfig ++
        Dependencies.yamusca ++
        Dependencies.webjars ++
        Dependencies.loggingApi ++
        Dependencies.logging.map(_ % Runtime),
    addCompilerPlugin(Dependencies.kindProjectorPlugin),
    addCompilerPlugin(Dependencies.betterMonadicFor),
    buildInfoPackage := "docspell.restserver",
    Compile / sourceGenerators += Def.task {
      createWebjarSource(Dependencies.webjars, (Compile / sourceManaged).value)
    }.taskValue,
    Compile / resourceGenerators += Def.task {
      copyWebjarResources(
        Seq((restapi / Compile / resourceDirectory).value / "docspell-openapi.yml"),
        (Compile / resourceManaged).value,
        name.value,
        version.value,
        streams.value.log
      )
    }.taskValue,
    Compile / unmanagedResourceDirectories ++= Seq(
      (Compile / resourceDirectory).value.getParentFile / "templates"
    ),
    reStart / javaOptions ++= Seq(
      s"-Dconfig.file=${(LocalRootProject / baseDirectory).value / "local" / "dev.conf"}"
    )
  )
  .dependsOn(restapi, joexapi, backend, webapp, ftssolr)

// --- Website Documentation

val website = project
  .in(file("website"))
  .disablePlugins(RevolverPlugin, ReleasePlugin)
  .enablePlugins(ZolaPlugin, GhpagesPlugin)
  .settings(sharedSettings)
  .settings(
    name := "docspell-website",
    publishArtifact := false,
    skip in publish := true,
    ghpagesNoJekyll := true,
    // the ghpages plugins works together with the site plugin (its a dependency)
    // to make it publish the zola generated site, override their mappings with the zola output
    mappings in SitePlugin.autoImport.makeSite :=
      Path.selectSubpaths(zolaOutputDir.value, _ => true).toSeq,
    git.remoteRepo := "git@github.com:eikek/docspell",
    Compile / resourceGenerators += Def.task {
      val templateOut = baseDirectory.value / "site" / "templates" / "shortcodes"
      val staticOut   = baseDirectory.value / "site" / "static" / "openapi"
      IO.createDirectories(Seq(templateOut, staticOut))
      val logger = streams.value.log

      val files = Seq(
        (resourceDirectory in (restserver, Compile)).value / "reference.conf"     -> templateOut / "server.conf",
        (resourceDirectory in (joex, Compile)).value / "reference.conf"           -> templateOut / "joex.conf",
        (LocalRootProject / baseDirectory).value / "tools" / "exim" / "exim.conf" -> templateOut / "sample-exim.conf",
        (resourceDirectory in (restapi, Compile)).value / "docspell-openapi.yml"  -> staticOut / "docspell-openapi.yml",
        (restapi / Compile / openapiStaticDoc).value                              -> staticOut / "docspell-openapi.html"
      )
      IO.copy(files)
      files.map(_._2)
    }.taskValue,
    Compile / resourceGenerators += Def.task {
      val changelog = (LocalRootProject / baseDirectory).value / "Changelog.md"
      val targetDir = baseDirectory.value / "site" / "content" / "docs" / "changelog"
      IO.createDirectory(targetDir)
      val target = targetDir / "_index.md"

      IO.write(
        target,
        """|+++
                          |title = "Changelog"
                          |description = "See what changed between releases."
                          |weight = 10
                          |insert_anchor_links = "right"
                          |[extra]
                          |maketoc = false
                          |+++
                          |""".stripMargin
      )
      IO.append(target, IO.readBytes(changelog))
      Seq(target)
    }.taskValue
  )

val root = project
  .in(file("."))
  .settings(sharedSettings)
  .settings(noPublish)
  .settings(
    name := "docspell-root"
  )
  .aggregate(
    common,
    extract,
    convert,
    analysis,
    ftsclient,
    ftssolr,
    files,
    store,
    joexapi,
    joex,
    backend,
    webapp,
    restapi,
    restserver
  )

// --- Helpers

def copyWithGZ(src: File, target: File): Seq[File] = {
  val gzipFilter = "*.html" || "*.css" || "*.js"
  IO.copy(Seq(src -> target))
  if (gzipFilter.accept(src)) {
    val gz = file(target.toString + ".gz")
    IO.gzip(src, gz)
    Seq(target, gz)
  } else {
    Seq(target)
  }
}

def copyWebjarResources(
    src: Seq[File],
    base: File,
    artifact: String,
    version: String,
    logger: Logger
): Seq[File] = {
  val targetDir = base / "META-INF" / "resources" / "webjars" / artifact / version
  logger.info(s"Copy webjar resources from ${src.size} files/directories.")
  src.flatMap { dir =>
    if (dir.isDirectory) {
      val files = (dir ** "*").filter(_.isFile).get.pair(Path.relativeTo(dir))
      files.flatMap { case (f, name) =>
        val target = targetDir / name
        IO.createDirectories(Seq(target.getParentFile))
        copyWithGZ(f, target)
      }
    } else {
      val target = targetDir / dir.name
      IO.createDirectories(Seq(target.getParentFile))
      copyWithGZ(dir, target)
    }
  }
}

def compileElm(
    logger: Logger,
    wd: File,
    outBase: File,
    artifact: String,
    version: String,
    mode: ElmCompileMode
): Seq[File] = {
  logger.info("Compile elm files ...")
  val target =
    outBase / "META-INF" / "resources" / "webjars" / artifact / version / "docspell-app.js"
  val cmd = Seq("elm", "make") ++ mode.flags ++ Seq("--output", target.toString)
  val proc = Process(
    cmd ++ Seq(wd / "src" / "main" / "elm" / "Main.elm").map(_.toString),
    Some(wd)
  )
  val out = proc.!!
  logger.info(out)
  val targetGZ = file(target.toString + ".gz")
  IO.gzip(target, targetGZ)
  Seq(target, targetGZ)
}

def createWebjarSource(wj: Seq[ModuleID], out: File): Seq[File] = {
  val target   = out / "Webjars.scala"
  val badChars = "-.".toSet
  val fields = wj
    .map(m =>
      s"""val ${m.name.toLowerCase.filter(c =>
        !badChars.contains(c)
      )} = "/${m.name}/${m.revision}" """
    )
    .mkString("\n\n")
  val content = s"""package docspell.restserver.webapp
    |object Webjars {
    |$fields
    |}
    |""".stripMargin

  IO.write(target, content)
  Seq(target)
}

def packageTools(logger: Logger, dir: File, version: String): Seq[File] = {
  val target = dir / "target"
  IO.delete(target)
  IO.createDirectory(target)
  val archive = target / s"docspell-tools-${version}.zip"
  logger.info(s"Packaging tools to $archive ...")
  val webext = target / "docspell-firefox-extension.xpi"
  val wx     = dir / "webextension"
  IO.zip(
    Seq(
      wx / "_locales/de/messages.json" -> "_locales/de/messages.json",
      wx / "_locales/en/messages.json" -> "_locales/en/messages.json",
      wx / "docspell.js"               -> "docspell.js",
      wx / "icons" / "logo-48.png"     -> "icons/logo-48.png",
      wx / "icons" / "logo-96.png"     -> "icons/logo-96.png",
      wx / "manifest.json"             -> "manifest.json"
    ),
    webext
  )

  val excludes = Seq(wx, target)

  val files =
    (dir ** "*")
      .filter(f => !excludes.exists(p => f.absolutePath.startsWith(p.absolutePath)))
      .pair(sbt.io.Path.relativeTo(dir))
      .map({case (f, name) => (f, s"docspell-tools-${version}/$name") })

  IO.zip(
    Seq(
      webext                          -> s"docspell-tools-${version}/firefox/docspell-extension.xpi",
      wx / "native/app_manifest.json" -> s"docspell-tools-${version}/firefox/native/app_manifest.json",
      wx / "native/native.py"         -> s"docspell-tools-${version}/firefox/native/native.py"
    ) ++ files,
    archive
  )

  Seq(archive)
}

// --- aliases

addCommandAlias(
  "make",
  ";set webapp/elmCompileMode := ElmCompileMode.Production ;root/openapiCodegen ;root/test:compile"
)
addCommandAlias("make-zip", ";restserver/universal:packageBin ;joex/universal:packageBin")
addCommandAlias("make-deb", ";restserver/debian:packageBin ;joex/debian:packageBin")
addCommandAlias("make-tools", ";root/toolsPackage")
addCommandAlias("make-pkg", ";clean ;make ;make-zip ;make-deb ;make-tools")
addCommandAlias("reformatAll", ";project root ;scalafix ;scalafmtAll")