Mapping sender, to, cc and replyTo

e-invoice-domain/src/main/kotlin/net/codinux/invoicing/email/EmailsFetcher.kt

@@ -3,10 +3,13 @@ package net.codinux.invoicing.email
 import jakarta.mail.*
 import jakarta.mail.event.MessageCountAdapter
 import jakarta.mail.event.MessageCountEvent
+import jakarta.mail.internet.InternetAddress
+import jakarta.mail.internet.MimeUtility
 import kotlinx.coroutines.*
-import net.codinux.invoicing.email.model.EmailAccount
-import net.codinux.invoicing.email.model.EmailAttachment
 import net.codinux.invoicing.email.model.Email
+import net.codinux.invoicing.email.model.EmailAccount
+import net.codinux.invoicing.email.model.EmailAddress
+import net.codinux.invoicing.email.model.EmailAttachment
 import net.codinux.invoicing.filesystem.FileUtil
 import net.codinux.invoicing.model.Invoice
 import net.codinux.invoicing.reader.EInvoiceReader
@@ -151,9 +154,13 @@ open class EmailsFetcher(
             getAttachment(part, status)
         }
 
+        val sender = message.from?.firstOrNull()?.let { map(it) }
+
         val email = Email(
-            message.from?.joinToString(), message.subject ?: "",
+            sender, message.subject ?: "",
-            message.sentDate?.let { map(it) }, map(message.receivedDate), status.folder.getUID(message),
+            message.getRecipients(Message.RecipientType.TO).map { map(it) }, message.getRecipients(Message.RecipientType.CC).map { map(it) },
+            (message.replyTo.firstOrNull() as? InternetAddress)?.let { if (it.address != sender?.address) map(it) else null }, // only set replyTo if it differs from sender
+            map(message.sentDate ?: message.receivedDate), status.folder.getUID(message),
             parts.any { it.mediaType == "application/pgp-encrypted" },
             getPlainTextBody(messageBodyParts, status), getHtmlBody(messageBodyParts, status),
             attachments
@@ -164,6 +171,13 @@ open class EmailsFetcher(
         return email
     }
 
+    protected open fun map(address: Address): EmailAddress =
+        if (address is InternetAddress) { // use MimeUtility to parse e.g. Quoted-printable names that e.g. start with "=?UTF-8?Q?"
+            EmailAddress(address.address, address.personal?.let { MimeUtility.decodeText(it) })
+        } else {
+            EmailAddress(address.toString())
+        }
+
     protected open fun getAttachment(messagePart: MessagePart, status: FetchEmailsStatus): EmailAttachment? {
         try {
             val part = messagePart.part

e-invoice-domain/src/main/kotlin/net/codinux/invoicing/email/model/Email.kt

@@ -4,10 +4,12 @@ import java.time.Instant
 import java.time.ZoneId
 
 class Email(
-    val sender: String?,
+    val sender: EmailAddress?,
     val subject: String,
-    val sent: Instant?,
+    val to: List<EmailAddress>,
-    val received: Instant,
+    val cc: List<EmailAddress>,
+    val replayTo: EmailAddress?,
+    val date: Instant,
     val messageId: Long,
     val isEncrypted: Boolean = false,
     val plainTextBody: String?,
@@ -16,5 +18,5 @@ class Email(
 ) {
     val plainTextOrHtmlBody: String? by lazy { plainTextBody ?: htmlBody }
 
-    override fun toString() = "${(sent ?: received).atZone(ZoneId.systemDefault()).toLocalDate()} $sender: $subject, ${attachments.size} attachment(s)"
+    override fun toString() = "${date.atZone(ZoneId.systemDefault()).toLocalDate()} $sender: $subject, ${attachments.size} attachment(s)"
 }

e-invoice-domain/src/main/kotlin/net/codinux/invoicing/email/model/EmailAddress.kt

@@ -0,0 +1,16 @@
+package net.codinux.invoicing.email.model
+
+class EmailAddress(
+    /**
+     * The email address, like "a@b.com"
+     */
+    val address: String,
+    /**
+     * Sender or recipient's name like "Mahatma Gandhi"
+     */
+    val name: String? = null
+) {
+    override fun toString() =
+        if (name == null) address
+        else "$name <$address>"
+}