feat(plugins): rebind keys at runtime (#3422)

* refactor(server): interpret keys on server so they can be rebound

* feat(plugins): allow rebinding keys at runtime

* various cleanups

* add tests

* style(fmt): rustfmt

* fix(tests): address (some) e2e test flakiness

* style(fmt): rustfmt

4 files changed, 15 insertions, 0 deletions

diff --git a/zellij-utils/src/plugin_api/plugin_command.proto b/zellij-utils/src/plugin_api/plugin_command.proto
index 718e8b4c..14ab3045 100644
--- a/zellij-utils/src/plugin_api/plugin_command.proto
+++ b/zellij-utils/src/plugin_api/plugin_command.proto
@@ -98,6 +98,7 @@ enum CommandName {
   DumpSessionLayout = 84;
   CloseSelf = 85;
   NewTabsWithLayoutInfo = 86;
+  RebindKeys = 87;
 }
 
 message PluginCommand {
@@ -155,6 +156,7 @@ message PluginCommand {
     KillSessionsPayload kill_sessions_payload = 60;
     string scan_host_folder_payload = 61;
     NewTabsWithLayoutInfoPayload new_tabs_with_layout_info_payload = 62;
+    string rebind_keys_payload = 63;
   }
 }
 
diff --git a/zellij-utils/src/plugin_api/plugin_command.rs b/zellij-utils/src/plugin_api/plugin_command.rs
index 771b6151..aeafc1d4 100644
--- a/zellij-utils/src/plugin_api/plugin_command.rs
+++ b/zellij-utils/src/plugin_api/plugin_command.rs
@@ -888,6 +888,12 @@ impl TryFrom<ProtobufPluginCommand> for PluginCommand {
                 },
                 _ => Err("Mismatched payload for NewTabsWithLayoutInfo"),
             },
+            Some(CommandName::RebindKeys) => match protobuf_plugin_command.payload {
+                Some(Payload::RebindKeysPayload(rebind_keys_payload)) => {
+                    Ok(PluginCommand::RebindKeys(rebind_keys_payload))
+                },
+                _ => Err("Mismatched payload for RebindKeys"),
+            },
             None => Err("Unrecognized plugin command"),
         }
     }
@@ -1420,6 +1426,10 @@ impl TryFrom<PluginCommand> for ProtobufPluginCommand {
                     )),
                 })
             },
+            PluginCommand::RebindKeys(rebind_keys_payload) => Ok(ProtobufPluginCommand {
+                name: CommandName::RebindKeys as i32,
+                payload: Some(Payload::RebindKeysPayload(rebind_keys_payload)),
+            }),
         }
     }
 }
diff --git a/zellij-utils/src/plugin_api/plugin_permission.proto b/zellij-utils/src/plugin_api/plugin_permission.proto
index 761384c1..cc1fda6a 100644
--- a/zellij-utils/src/plugin_api/plugin_permission.proto
+++ b/zellij-utils/src/plugin_api/plugin_permission.proto
@@ -12,4 +12,5 @@ enum PermissionType {
   WebAccess = 6;
   ReadCliPipes = 7;
   MessageAndLaunchOtherPlugins = 8;
+  RebindKeys = 9;
 }
diff --git a/zellij-utils/src/plugin_api/plugin_permission.rs b/zellij-utils/src/plugin_api/plugin_permission.rs
index 4f258ac2..968de917 100644
--- a/zellij-utils/src/plugin_api/plugin_permission.rs
+++ b/zellij-utils/src/plugin_api/plugin_permission.rs
@@ -24,6 +24,7 @@ impl TryFrom<ProtobufPermissionType> for PermissionType {
             ProtobufPermissionType::MessageAndLaunchOtherPlugins => {
                 Ok(PermissionType::MessageAndLaunchOtherPlugins)
             },
+            ProtobufPermissionType::RebindKeys => Ok(PermissionType::RebindKeys),
         }
     }
 }
@@ -49,6 +50,7 @@ impl TryFrom<PermissionType> for ProtobufPermissionType {
             PermissionType::MessageAndLaunchOtherPlugins => {
                 Ok(ProtobufPermissionType::MessageAndLaunchOtherPlugins)
             },
+            PermissionType::RebindKeys => Ok(ProtobufPermissionType::RebindKeys),
         }
     }
 }