Add route to send mail for a share

modules/backend/src/main/scala/docspell/backend/BackendApp.scala

@@ -86,7 +86,9 @@ object BackendApp {
       customFieldsImpl <- OCustomFields(store)
       simpleSearchImpl = OSimpleSearch(fulltextImpl, itemSearchImpl)
       clientSettingsImpl <- OClientSettings(store)
-      shareImpl <- Resource.pure(OShare(store, itemSearchImpl, simpleSearchImpl))
+      shareImpl <- Resource.pure(
+        OShare(store, itemSearchImpl, simpleSearchImpl, javaEmil)
+      )
     } yield new BackendApp[F] {
       val login = loginImpl
       val signup = signupImpl

modules/backend/src/main/scala/docspell/backend/ops/OMail.scala

@@ -51,6 +51,22 @@ trait OMail[F[_]] {
 }
 
 object OMail {
+  sealed trait SendResult
+
+  object SendResult {
+
+    /** Mail was successfully sent and stored to db. */
+    case class Success(id: Ident) extends SendResult
+
+    /** There was a failure sending the mail. The mail is then not saved to db. */
+    case class SendFailure(ex: Throwable) extends SendResult
+
+    /** The mail was successfully sent, but storing to db failed. */
+    case class StoreFailure(ex: Throwable) extends SendResult
+
+    /** Something could not be found required for sending (mail configs, items etc). */
+    case object NotFound extends SendResult
+  }
 
   case class Sent(
       id: Ident,

modules/backend/src/main/scala/docspell/backend/ops/OShare.scala

@@ -13,7 +13,7 @@ import cats.implicits._
 import docspell.backend.PasswordCrypt
 import docspell.backend.auth.ShareToken
 import docspell.backend.ops.OItemSearch._
-import docspell.backend.ops.OShare.{ShareQuery, VerifyResult}
+import docspell.backend.ops.OShare._
 import docspell.backend.ops.OSimpleSearch.StringSearchResult
 import docspell.common._
 import docspell.query.ItemQuery
@@ -21,8 +21,9 @@ import docspell.query.ItemQuery.Expr
 import docspell.query.ItemQuery.Expr.AttachId
 import docspell.store.Store
 import docspell.store.queries.SearchSummary
-import docspell.store.records.RShare
+import docspell.store.records.{RShare, RUserEmail}
 
+import emil._
 import scodec.bits.ByteVector
 
 trait OShare[F[_]] {
@@ -63,9 +64,33 @@ trait OShare[F[_]] {
   def searchSummary(
       settings: OSimpleSearch.StatsSettings
   )(shareId: Ident, q: ItemQueryString): OptionT[F, StringSearchResult[SearchSummary]]
+
+  def sendMail(account: AccountId, connection: Ident, mail: ShareMail): F[SendResult]
 }
 
 object OShare {
+  final case class ShareMail(
+      shareId: Ident,
+      subject: String,
+      recipients: List[MailAddress],
+      cc: List[MailAddress],
+      bcc: List[MailAddress],
+      body: String
+  )
+
+  sealed trait SendResult
+  object SendResult {
+
+    /** Mail was successfully sent and stored to db. */
+    case class Success(msgId: String) extends SendResult
+
+    /** There was a failure sending the mail. The mail is then not saved to db. */
+    case class SendFailure(ex: Throwable) extends SendResult
+
+    /** Something could not be found required for sending (mail configs, items etc). */
+    case object NotFound extends SendResult
+  }
+
   final case class ShareQuery(id: Ident, cid: Ident, query: ItemQuery) {
 
     //TODO
@@ -116,7 +141,8 @@ object OShare {
   def apply[F[_]: Async](
       store: Store[F],
       itemSearch: OItemSearch[F],
-      simpleSearch: OSimpleSearch[F]
+      simpleSearch: OSimpleSearch[F],
+      emil: Emil[F]
   ): OShare[F] =
     new OShare[F] {
       private[this] val logger = Logger.log4s[F](org.log4s.getLogger)
@@ -293,5 +319,45 @@ object OShare {
                 case other => other
               }
           }
+
+      def sendMail(
+          account: AccountId,
+          connection: Ident,
+          mail: ShareMail
+      ): F[SendResult] = {
+        val getSmtpSettings: OptionT[F, RUserEmail] =
+          OptionT(store.transact(RUserEmail.getByName(account, connection)))
+
+        def createMail(sett: RUserEmail): OptionT[F, Mail[F]] = {
+          import _root_.emil.builder._
+
+          OptionT.pure(
+            MailBuilder.build(
+              From(sett.mailFrom),
+              Tos(mail.recipients),
+              Ccs(mail.cc),
+              Bccs(mail.bcc),
+              XMailer.emil,
+              Subject(mail.subject),
+              TextBody[F](mail.body)
+            )
+          )
+        }
+
+        def sendMail(cfg: MailConfig, mail: Mail[F]): F[Either[SendResult, String]] =
+          emil(cfg).send(mail).map(_.head).attempt.map(_.left.map(SendResult.SendFailure))
+
+        (for {
+          _ <- RShare
+            .findCurrentActive(mail.shareId)
+            .filter(_.cid == account.collective)
+            .mapK(store.transform)
+          mailCfg <- getSmtpSettings
+          mail <- createMail(mailCfg)
+          mid <- OptionT.liftF(sendMail(mailCfg.toMailConfig, mail))
+          conv = mid.fold(identity, id => SendResult.Success(id))
+        } yield conv).getOrElse(SendResult.NotFound)
+      }
+
     }
 }

modules/backend/src/main/scala/docspell/backend/ops/SendResult.scala

@@ -1,26 +0,0 @@
-/*
- * Copyright 2020 Eike K. & Contributors
- *
- * SPDX-License-Identifier: AGPL-3.0-or-later
- */
-
-package docspell.backend.ops
-
-import docspell.common._
-
-sealed trait SendResult
-
-object SendResult {
-
-  /** Mail was successfully sent and stored to db. */
-  case class Success(id: Ident) extends SendResult
-
-  /** There was a failure sending the mail. The mail is then not saved to db. */
-  case class SendFailure(ex: Throwable) extends SendResult
-
-  /** The mail was successfully sent, but storing to db failed. */
-  case class StoreFailure(ex: Throwable) extends SendResult
-
-  /** Something could not be found required for sending (mail configs, items etc). */
-  case object NotFound extends SendResult
-}

modules/restapi/src/main/resources/docspell-openapi.yml

@@ -1959,6 +1959,32 @@ paths:
             application/json:
               schema:
                 $ref: "#/components/schemas/IdResult"
+  /sec/share/email/send/{name}:
+    post:
+      operationId: "sec-share-email-send"
+      tags: [ Share, E-Mail ]
+      summary: Send an email.
+      description: |
+        Sends an email as specified in the body of the request.
+
+        An existing shareId must be given with the request, no matter
+        the content of the mail.
+      security:
+        - authTokenHeader: []
+      parameters:
+        - $ref: "#/components/parameters/name"
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/SimpleShareMail"
+      responses:
+        200:
+          description: Ok
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/BasicResult"
   /sec/share/{shareId}:
     parameters:
       - $ref: "#/components/parameters/shareId"
@@ -5283,6 +5309,36 @@ components:
           items:
             type: string
             format: ident
+    SimpleShareMail:
+      description: |
+        A simple e-mail related to a share.
+      required:
+        - shareId
+        - recipients
+        - cc
+        - bcc
+        - subject
+        - body
+      properties:
+        shareId:
+          type: string
+          format: ident
+        recipients:
+          type: array
+          items:
+            type: string
+        cc:
+          type: array
+          items:
+            type: string
+        bcc:
+          type: array
+          items:
+            type: string
+        subject:
+          type: string
+        body:
+          type: string
     EmailSettingsList:
       description: |
         A list of user email settings.

modules/restserver/src/main/scala/docspell/restserver/routes/MailSendRoutes.scala

@@ -11,8 +11,7 @@ import cats.implicits._
 
 import docspell.backend.BackendApp
 import docspell.backend.auth.AuthToken
-import docspell.backend.ops.OMail.{AttachSelection, ItemMail}
+import docspell.backend.ops.OMail.{AttachSelection, ItemMail, SendResult}
-import docspell.backend.ops.SendResult
 import docspell.common._
 import docspell.restapi.model._
 

modules/restserver/src/main/scala/docspell/restserver/routes/ShareRoutes.scala

@@ -13,7 +13,7 @@ import cats.implicits._
 import docspell.backend.BackendApp
 import docspell.backend.auth.AuthToken
 import docspell.backend.ops.OShare
-import docspell.backend.ops.OShare.VerifyResult
+import docspell.backend.ops.OShare.{SendResult, ShareMail, VerifyResult}
 import docspell.common.{Ident, Timestamp}
 import docspell.restapi.model._
 import docspell.restserver.Config
@@ -21,6 +21,8 @@ import docspell.restserver.auth.ShareCookieData
 import docspell.restserver.http4s.{ClientRequestInfo, ResponseGenerator}
 import docspell.store.records.RShare
 
+import emil.MailAddress
+import emil.javamail.syntax._
 import org.http4s.HttpRoutes
 import org.http4s.circe.CirceEntityDecoder._
 import org.http4s.circe.CirceEntityEncoder._
@@ -68,6 +70,17 @@ object ShareRoutes {
           del <- backend.share.delete(id, user.account.collective)
           resp <- Ok(BasicResult(del, if (del) "Share deleted." else "Deleting failed."))
         } yield resp
+
+      case req @ POST -> Root / "email" / "send" / Ident(name) =>
+        for {
+          in <- req.as[SimpleShareMail]
+          mail = convertIn(in)
+          res <- mail.traverse(m => backend.share.sendMail(user.account, name, m))
+          resp <- res.fold(
+            err => Ok(BasicResult(false, s"Invalid mail data: $err")),
+            res => Ok(convertOut(res))
+          )
+        } yield resp
     }
   }
 
@@ -134,4 +147,20 @@ object ShareRoutes {
       r.lastAccess
     )
 
+  def convertIn(s: SimpleShareMail): Either[String, ShareMail] =
+    for {
+      rec <- s.recipients.traverse(MailAddress.parse)
+      cc <- s.cc.traverse(MailAddress.parse)
+      bcc <- s.bcc.traverse(MailAddress.parse)
+    } yield ShareMail(s.shareId, s.subject, rec, cc, bcc, s.body)
+
+  def convertOut(res: SendResult): BasicResult =
+    res match {
+      case SendResult.Success(_) =>
+        BasicResult(true, "Mail sent.")
+      case SendResult.SendFailure(ex) =>
+        BasicResult(false, s"Mail sending failed: ${ex.getMessage}")
+      case SendResult.NotFound =>
+        BasicResult(false, s"There was no mail-connection or item found.")
+    }
 }