Allow saving current session for resurrection on demand (#4654)

* initial implementation

* session manager ui and plugin api

* remove event

* cleanups and formatting

* add pr

1 files changed, 19 insertions, 0 deletions

diff --git a/zellij-utils/src/plugin_api/plugin_command.proto b/zellij-utils/src/plugin_api/plugin_command.proto
index 9c529013..6ef1ad34 100644
--- a/zellij-utils/src/plugin_api/plugin_command.proto
+++ b/zellij-utils/src/plugin_api/plugin_command.proto
@@ -178,6 +178,8 @@ enum CommandName {
   GetFocusedPaneInfo = 183;
   TogglePaneBorderless = 184;
   SetPaneBorderless = 185;
+  SaveSession = 186;
+  CurrentSessionLastSavedTime = 187;
 }
 
 message PluginCommand {
@@ -305,6 +307,8 @@ message PluginCommand {
     GetFocusedPaneInfoPayload get_focused_pane_info_payload = 134;
     TogglePaneBorderlessPayload toggle_pane_borderless_payload = 135;
     SetPaneBorderlessPayload set_pane_borderless_payload = 136;
+    SaveSessionPayload save_session_payload = 137;
+    CurrentSessionLastSavedTimePayload current_session_last_saved_time_payload = 138;
   }
 }
 
@@ -906,3 +910,18 @@ message FocusedPaneInfo {
   uint32 focused_tab_index = 1;
   PaneId focused_pane_id = 2;
 }
+
+message SaveSessionPayload {}
+
+message SaveSessionResponse {
+  oneof result {
+    bool success = 1;
+    string error = 2;
+  }
+}
+
+message CurrentSessionLastSavedTimePayload {}
+
+message CurrentSessionLastSavedTimeResponse {
+  optional uint64 timestamp_millis = 1; // None if never saved, otherwise milliseconds elapsed since last save
+}