feat(@desktop/chat): download messages

fixes #3508

src/app/chat/view.nim

@@ -574,4 +574,3 @@ QtObject:
       self.setActiveChannel(pubKey)
       return
     echo "Unsupported deep link structure: " & uri
-  

src/app/chat/views/channel.nim

@@ -305,3 +305,4 @@ QtObject:
   proc removeChat*(self: ChannelView, chatId: string) =
     discard self.chats.removeChatItemFromList(chatId)
     self.setActiveChannel(backToFirstChat)
+    

src/app/chat/views/messages.nim

@@ -478,3 +478,16 @@ QtObject:
       self.searchedMessageLoaded(messageId)
     else:
       self.loadMessagesUntillMessageWithIdIsLoaded(messageId)
+
+  proc downloadMessages*(self: MessageView, filePath: string) {.slot.} =
+    let messages = newJArray()
+    for message in self.messageList[self.channelView.activeChannel.id].messages:
+      if message.id == "":
+        continue
+
+      messages.elems.add(%*{
+        "id": message.id, "text": message.text, "clock": message.clock,
+        "alias": message.alias, "from": message.fromAuthor
+      })
+
+    writeFile(url_toLocalFile(filePath), $messages)

ui/app/AppLayouts/Chat/components/ChatContextMenu.qml

@@ -1,6 +1,7 @@
 import QtQuick 2.13
 import QtQuick.Controls 2.13
 import QtQuick.Layouts 1.13
+import Qt.labs.platform 1.1
 import "./"
 import "../../../../shared"
 import "../../../../imports"
@@ -106,6 +107,13 @@ StatusPopupMenu {
         })
     }
 
+    StatusMenuItem {
+        text: qsTr("Download")
+        enabled: appSettings.downloadChannelMessagesEnabled
+        icon.name: "download"
+        onTriggered: downdloadDialog.open()
+    }
+
     StatusMenuSeparator {
         visible: deleteOrLeaveMenuItem.enabled
     }
@@ -143,6 +151,18 @@ StatusPopupMenu {
         enabled: !communityActive || chatsModel.communities.activeCommunity.admin
     }
 
+    FileDialog {
+        id: downdloadDialog
+        acceptLabel: qsTr("Save")
+        fileMode: FileDialog.SaveFile
+        title: qsTr("Download messages")
+        currentFile: StandardPaths.writableLocation(StandardPaths.DocumentsLocation) + "/messages.json"
+        defaultSuffix: "json"
+        onAccepted: {
+            chatsModel.messageView.downloadMessages(downdloadDialog.currentFile)
+        }
+    }
+
     Component {
         id: deleteChatConfirmationDialogComponent
         ConfirmationDialog {

ui/app/AppLayouts/Profile/Sections/AdvancedContainer.qml

@@ -264,6 +264,15 @@ ScrollView {
                 }
             }
 
+            StatusSettingsLineButton {
+                text: qsTr("Download messages")
+                isSwitch: true
+                switchChecked: appSettings.downloadChannelMessagesEnabled
+                onClicked: {
+                    appSettings.downloadChannelMessagesEnabled = !appSettings.downloadChannelMessagesEnabled
+                }
+            }
+
             StatusSettingsLineButton {
                 text: qsTr("Stickers/ENS on ropsten")
                 visible: profileModel.network.current === Constants.networkRopsten

ui/app/AppMain.qml

@@ -186,6 +186,7 @@ Item {
         property bool quitOnClose: false
         property string skinColor: ""
         property bool showDeleteMessageWarning: true
+        property bool downloadChannelMessagesEnabled: false
 
         // Browser settings
         property bool showBrowserSelector: true

vendor/DOtherSide

@@ -1 +1 @@
-Subproject commit 9da380cf964df3bcddbbd4ac929223a322523465
+Subproject commit 10af6b307428612fa974d1ba3d70649351b766b0

vendor/nimqml

@@ -1 +1 @@
-Subproject commit b67014a56a8d525f0fef7d4600d449138b16bdcb
+Subproject commit ca381eb8a20cf02f712a423f85b22901e14fa982