wip

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/model/SimpleXAPI.kt

@@ -1096,8 +1096,8 @@ object ChatController {
 
   suspend fun apiReorderChatTags(rh: Long?, tagIds: List<Long>) = sendCommandOkResp(rh, CC.ApiReorderChatTags(tagIds))
 
-  suspend fun apiSendMessages(rh: Long?, type: ChatType, id: Long, scope: GroupChatScope?, sendAsGroup: Boolean = false, live: Boolean = false, ttl: Int? = null, composedMessages: List<ComposedMessage>): List<AChatItem>? {
-    val cmd = CC.ApiSendMessages(type, id, scope, sendAsGroup, live, ttl, composedMessages)
+  suspend fun apiSendMessages(rh: Long?, type: ChatType, id: Long, scope: GroupChatScope?, sendAsGroup: Boolean = false, live: Boolean = false, ttl: Int? = null, sign: Boolean = false, composedMessages: List<ComposedMessage>): List<AChatItem>? {
+    val cmd = CC.ApiSendMessages(type, id, scope, sendAsGroup, live, ttl, sign, composedMessages)
     return processSendMessageCmd(rh, cmd)
   }
 
@@ -3782,7 +3782,7 @@ sealed class CC {
   class ApiGetChat(val type: ChatType, val id: Long, val scope: GroupChatScope?, val contentTag: MsgContentTag?, val pagination: ChatPagination, val search: String = ""): CC()
   class ApiGetChatContentTypes(val type: ChatType, val id: Long, val scope: GroupChatScope?): CC()
   class ApiGetChatItemInfo(val type: ChatType, val id: Long, val scope: GroupChatScope?, val itemId: Long): CC()
-  class ApiSendMessages(val type: ChatType, val id: Long, val scope: GroupChatScope?, val sendAsGroup: Boolean, val live: Boolean, val ttl: Int?, val composedMessages: List<ComposedMessage>): CC()
+  class ApiSendMessages(val type: ChatType, val id: Long, val scope: GroupChatScope?, val sendAsGroup: Boolean, val live: Boolean, val ttl: Int?, val sign: Boolean, val composedMessages: List<ComposedMessage>): CC()
   class ApiCreateChatTag(val tag: ChatTagData): CC()
   class ApiSetChatTags(val type: ChatType, val id: Long, val tagIds: List<Long>): CC()
   class ApiDeleteChatTag(val tagId: Long): CC()
@@ -3980,7 +3980,7 @@ sealed class CC {
     is ApiSendMessages -> {
       val msgs = json.encodeToString(composedMessages)
       val ttlStr = if (ttl != null) "$ttl" else "default"
-      "/_send ${chatRef(type, id, scope)}${if (sendAsGroup) "(as_group=on)" else ""} live=${onOff(live)} ttl=${ttlStr} json $msgs"
+      "/_send ${chatRef(type, id, scope)}${if (sendAsGroup) "(as_group=on)" else ""} live=${onOff(live)} ttl=${ttlStr} sign=${onOff(sign)} json $msgs"
     }
     is ApiCreateChatTag -> "/_create tag ${json.encodeToString(tag)}"
     is ApiSetChatTags -> "/_tags ${chatRef(type, id, scope = null)} ${tagIds.joinToString(",")}"

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ComposeView.kt

@@ -115,7 +115,9 @@ data class ComposeState(
   val useLinkPreviews: Boolean,
   val mentions: MentionedMembers = emptyMap(),
   // the max file size the user may attach, raised by their active badge unless the chat is incognito; kept in sync on chat switch
-  val maxFileSize: Long = getMaxFileSize(FileProtocol.XFTP)
+  val maxFileSize: Long = getMaxFileSize(FileProtocol.XFTP),
+  // per-send opt-in to sign the message (relay channels only); resets on send/chat change, not persisted
+  val sign: Boolean = false
 ) {
   constructor(editingItem: ChatItem, liveMessage: LiveMessage? = null, useLinkPreviews: Boolean): this(
     ComposeMessage(
@@ -559,6 +561,7 @@ fun ComposeView(
         sendAsGroup = cInfo.sendAsGroup,
         live = live,
         ttl = ttl,
+        sign = composeState.value.sign,
         composedMessages = listOf(ComposedMessage(file, quoted, mc, mentions))
       )
     if (!chatItems.isNullOrEmpty()) {
@@ -1390,6 +1393,8 @@ fun ComposeView(
       allowVoiceToContact = ::allowVoiceToContact,
       sendButtonColor = sendButtonColor,
       timedMessageAllowed = timedMessageAllowed,
+      showSign = (chat.chatInfo as? ChatInfo.Group)?.groupInfo?.useRelays == true,
+      sendAsGroup = chat.chatInfo.sendAsGroup,
       customDisappearingMessageTimePref = chatModel.controller.appPrefs.customDisappearingMessageTime,
       placeholder = if (userCantSendReason.value != null) "" else placeholder ?: composeState.value.placeholder,
       sendMessage = { ttl ->

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/SendMsgView.kt

@@ -49,6 +49,8 @@ fun SendMsgView(
   sendButtonColor: Color = MaterialTheme.colors.primary,
   allowVoiceToContact: () -> Unit,
   timedMessageAllowed: Boolean = false,
+  showSign: Boolean = false,
+  sendAsGroup: Boolean = false,
   customDisappearingMessageTimePref: SharedPreference<Int>? = null,
   placeholder: String,
   sendMessage: (Int?) -> Unit,
@@ -207,6 +209,25 @@ fun SendMsgView(
                   )
                 }
               }
+              if (showSign && !cs.editing) {
+                menuItems.add {
+                  ItemAction(
+                    generalGetString(if (cs.sign) MR.strings.signing_message else MR.strings.sign_message),
+                    painterResource(MR.images.ic_verified),
+                    onClick = {
+                      val nowOn = !composeState.value.sign
+                      composeState.value = composeState.value.copy(sign = nowOn)
+                      if (nowOn) {
+                        AlertManager.shared.showAlertMsg(
+                          title = generalGetString(MR.strings.sign_message),
+                          text = generalGetString(if (sendAsGroup) MR.strings.sign_message_as_channel_desc else MR.strings.sign_message_desc)
+                        )
+                      }
+                      showDropdown.value = false
+                    }
+                  )
+                }
+              }
             }
 
             return menuItems

apps/multiplatform/common/src/commonMain/resources/MR/base/strings.xml

@@ -752,6 +752,10 @@
   <string name="send_disappearing_message_5_minutes">5 minutes</string>
   <string name="send_disappearing_message_custom_time">Custom time</string>
   <string name="send_disappearing_message_send">Send</string>
+  <string name="sign_message">Sign message</string>
+  <string name="signing_message">Signing message</string>
+  <string name="sign_message_desc">A signature is transferable, non-repudiable proof that you authored this message — it confirms authorship and integrity, not timing, order, or completeness.</string>
+  <string name="sign_message_as_channel_desc">A signature is transferable, non-repudiable proof that you authored this message — it confirms authorship and integrity, not timing, order, or completeness. Signing a post sent as the channel also reveals you as its author.</string>
   <string name="live_message">Live message!</string>
   <string name="send_live_message_desc">Send a live message - it will update for the recipient(s) as you type it</string>
   <string name="send_verb">Send</string>