Add JsonDict class for JSON output.

briar-headless/src/main/java/org/briarproject/bramble/identity/OutputAuthor.kt

 package org.briarproject.bramble.identity
 
 import org.briarproject.bramble.api.identity.Author
+import org.briarproject.briar.headless.json.JsonDict
 
-fun Author.output() = mapOf(
+fun Author.output() = JsonDict(
     "formatVersion" to formatVersion,
     "id" to id.bytes,
     "name" to name,

briar-headless/src/main/java/org/briarproject/briar/headless/contact/OutputContact.kt

@@ -2,8 +2,9 @@ package org.briarproject.briar.headless.contact
 
 import org.briarproject.bramble.api.contact.Contact
 import org.briarproject.bramble.identity.output
+import org.briarproject.briar.headless.json.JsonDict
 
-internal fun Contact.output() = mapOf(
+internal fun Contact.output() = JsonDict(
     "contactId" to id.int,
     "author" to author.output(),
     "verified" to isVerified

briar-headless/src/main/java/org/briarproject/briar/headless/forums/OutputForum.kt

 package org.briarproject.briar.headless.forums
 
 import org.briarproject.briar.api.forum.Forum
+import org.briarproject.briar.headless.json.JsonDict
 
-internal fun Forum.output() = mapOf(
+internal fun Forum.output() = JsonDict(
     "name" to name,
     "id" to id.bytes
 )

briar-headless/src/main/java/org/briarproject/briar/headless/json/JsonDict.kt

+package org.briarproject.briar.headless.json
+
+class JsonDict(vararg pairs: Pair<String, Any>) : HashMap<String, Any>(pairs.size) {
+    init {
+        putAll(pairs)
+    }
+
+    fun putAll(vararg pairs: Pair<String, Any>) {
+        for (p in pairs) put(p.first, p.second)
+    }
+}

briar-headless/src/main/java/org/briarproject/briar/headless/messaging/OutputPrivateMessage.kt

@@ -3,9 +3,10 @@ package org.briarproject.briar.headless.messaging
 import org.briarproject.bramble.api.contact.ContactId
 import org.briarproject.briar.api.messaging.PrivateMessage
 import org.briarproject.briar.api.messaging.PrivateMessageHeader
+import org.briarproject.briar.headless.json.JsonDict
 
-internal fun PrivateMessageHeader.output(contactId: ContactId, body: String?): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
+internal fun PrivateMessageHeader.output(contactId: ContactId, body: String?): JsonDict {
+    val dict = JsonDict(
         "type" to "org.briarproject.briar.api.messaging.PrivateMessageHeader",
         "contactId" to contactId.int,
         "timestamp" to timestamp,
@@ -16,11 +17,11 @@ internal fun PrivateMessageHeader.output(contactId: ContactId, body: String?): M
         "id" to id.bytes,
         "groupId" to groupId.bytes
     )
-    if (body != null) map.put("body", body)
-    return map
+    if (body != null) dict.put("body", body)
+    return dict
 }
 
-internal fun PrivateMessage.output(contactId: ContactId, body: String) = mapOf(
+internal fun PrivateMessage.output(contactId: ContactId, body: String) = JsonDict(
     "type" to "org.briarproject.briar.api.messaging.PrivateMessageHeader",
     "contactId" to contactId.int,
     "timestamp" to message.timestamp,

briar-headless/src/main/java/org/briarproject/briar/headless/messaging/OutputPrivateRequest.kt

@@ -10,52 +10,47 @@ import org.briarproject.briar.api.messaging.PrivateMessageHeader
 import org.briarproject.briar.api.messaging.PrivateRequest
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationRequest
 import org.briarproject.briar.api.sharing.InvitationRequest
+import org.briarproject.briar.headless.json.JsonDict
 
-internal fun PrivateRequest<*>.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
+internal fun PrivateRequest<*>.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateMessageHeader).output(contactId, null)
+    dict.putAll(
         "sessionId" to sessionId.bytes,
         "name" to name,
         "answered" to wasAnswered()
     )
-    map.putAll((this as PrivateMessageHeader).output(contactId, null))
-    return map
+    return dict
 }
 
-internal fun IntroductionRequest.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
+internal fun IntroductionRequest.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateRequest<*>).output(contactId)
+    dict.putAll(
         "type" to "org.briarproject.briar.api.introduction.IntroductionRequest",
         "alreadyContact" to isContact
     )
-    map.putAll((this as PrivateRequest<*>).output(contactId))
-    return map
+    return dict
 }
 
-internal fun InvitationRequest<*>.output(contactId : ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf("canBeOpened" to canBeOpened())
-    map.putAll((this as PrivateRequest<*>).output(contactId))
-    return map
+internal fun InvitationRequest<*>.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateRequest<*>).output(contactId)
+    dict.put("canBeOpened", canBeOpened())
+    return dict
 }
 
-internal fun BlogInvitationRequest.output(contactId : ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.blog.BlogInvitationRequest"
-    )
-    map.putAll((this as InvitationRequest<*>).output(contactId))
-    return map
+internal fun BlogInvitationRequest.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationRequest<*>).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.blog.BlogInvitationRequest")
+    return dict
 }
 
-internal fun ForumInvitationRequest.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.forum.ForumInvitationRequest"
-    )
-    map.putAll((this as InvitationRequest<*>).output(contactId))
-    return map
+internal fun ForumInvitationRequest.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationRequest<*>).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.forum.ForumInvitationRequest")
+    return dict
 }
 
-internal fun GroupInvitationRequest.output(contactId : ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.privategroup.invitation.GroupInvitationRequest"
-    )
-    map.putAll((this as InvitationRequest<*>).output(contactId))
-    return map
+internal fun GroupInvitationRequest.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationRequest<*>).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.privategroup.invitation.GroupInvitationRequest")
+    return dict
 }
\ No newline at end of file

briar-headless/src/main/java/org/briarproject/briar/headless/messaging/OutputPrivateResponse.kt

@@ -11,52 +11,47 @@ import org.briarproject.briar.api.messaging.PrivateMessageHeader
 import org.briarproject.briar.api.messaging.PrivateResponse
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationResponse
 import org.briarproject.briar.api.sharing.InvitationResponse
+import org.briarproject.briar.headless.json.JsonDict
 
-internal fun PrivateResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
+internal fun PrivateResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateMessageHeader).output(contactId, null)
+    dict.putAll(
         "sessionId" to sessionId.bytes,
         "accepted" to wasAccepted()
     )
-    map.putAll((this as PrivateMessageHeader).output(contactId, null))
-    return map
+    return dict
 }
 
-internal fun IntroductionResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
+internal fun IntroductionResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateResponse).output(contactId)
+    dict.putAll(
         "type" to "org.briarproject.briar.api.introduction.IntroductionResponse",
         "introducedAuthor" to introducedAuthor.output(),
         "introducer" to isIntroducer
     )
-    map.putAll((this as PrivateResponse).output(contactId))
-    return map
+    return dict
 }
 
-internal fun InvitationResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf("shareableId" to shareableId.bytes)
-    map.putAll((this as PrivateResponse).output(contactId))
-    return map
+internal fun InvitationResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as PrivateResponse).output(contactId)
+    dict.put("shareableId", shareableId.bytes)
+    return dict
 }
 
-internal fun BlogInvitationResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.blog.BlogInvitationResponse"
-    )
-    map.putAll((this as InvitationResponse).output(contactId))
-    return map
+internal fun BlogInvitationResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationResponse).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.blog.BlogInvitationResponse")
+    return dict
 }
 
-internal fun ForumInvitationResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.blog.BlogInvitationResponse"
-    )
-    map.putAll((this as InvitationResponse).output(contactId))
-    return map
+internal fun ForumInvitationResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationResponse).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.blog.BlogInvitationResponse")
+    return dict
 }
 
-internal fun GroupInvitationResponse.output(contactId: ContactId): Map<String, Any> {
-    val map: HashMap<String, Any> = hashMapOf(
-        "type" to "org.briarproject.briar.api.privategroup.invitation.GroupInvitationResponse"
-    )
-    map.putAll((this as InvitationResponse).output(contactId))
-    return map
+internal fun GroupInvitationResponse.output(contactId: ContactId): JsonDict {
+    val dict = (this as InvitationResponse).output(contactId)
+    dict.put("type", "org.briarproject.briar.api.privategroup.invitation.GroupInvitationResponse")
+    return dict
 }
\ No newline at end of file

briar-headless/src/test/java/org/briarproject/briar/headless/messaging/MessagingControllerImplTest.kt

@@ -15,6 +15,7 @@ import org.briarproject.briar.api.messaging.event.PrivateMessageReceivedEvent
 import org.briarproject.briar.headless.ControllerTest
 import org.briarproject.briar.headless.event.WebSocketController
 import org.briarproject.briar.headless.event.output
+import org.briarproject.briar.headless.json.JsonDict
 import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Assertions.assertThrows
 import org.junit.jupiter.api.Test
@@ -71,9 +72,9 @@ internal class MessagingControllerImplTest : ControllerTest() {
     }
 
     @Test
-    fun write() {
+    fun listPrivateMessage() {
         val privateMessage = PrivateMessage(message)
-        val slot = CapturingSlot<Map<String, Any>>()
+        val slot = CapturingSlot<JsonDict>()
 
         expectGetContact()
         every { ctx.formParam("text") } returns body
@@ -95,6 +96,8 @@ internal class MessagingControllerImplTest : ControllerTest() {
         assertEquals(contact.id.int, output.get("contactId"))
         assertEquals(body, output.get("body"))
         assertEquals(message.id.bytes, output.get("id"))
+        assertEquals("org.briarproject.briar.api.messaging.PrivateMessageHeader",
+            output.get("type"))
     }
 
     @Test