Add GetAvailableSlots API

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added `SimulationFps` event that is fired every second and contains simulation fps information since the last event (i.e. for the past ~1sec).
 - Added `GetSessionId` API
+- Added `GetAvaliableSlots` API
 
 ## [0.6.0] - 2022-05-30
 

STATUS.md

@@ -270,7 +270,7 @@ should use their independent logging and tracing functions.
 - [ ] `getRealTime`
 - [ ] `getMissionOptions`
 - [ ] `getAvailableCoalitions`
-- [ ] `getAvailableSlots`
+- [x] `getAvailableSlots`
 - [ ] `getCurrentMission`
 - [x] `getMissionName`
 - [x] `getMissionDescription`

lua/DCS-gRPC/methods/hook.lua

@@ -118,3 +118,59 @@ GRPC.methods.getUnitType = function(params)
 
   return GRPC.success({type = unit_type})
 end
+
+GRPC.methods.getAvailableSlotDetails = function()
+  local redForSlots = DCS.getAvailableSlots('red')
+  local blueForSlots = DCS.getAvailableSlots('blue')
+  local slots = {}
+
+  for _, gameSlot in ipairs(redForSlots) do
+    local exportSlot = {
+      unitId = gameSlot.unitId,
+      type = gameSlot.type,
+      role = gameSlot.role,
+      groupName = gameSlot.groupName,
+      groupSize = gameSlot.groupSize,
+      coalition = 1 + 1,  -- Increment for non zero-indexed gRPC enum
+      task = gameSlot.task,
+      onboardNumber = gameSlot.onboard_num,
+     }
+
+     if gameSlot.airdromeId ~= nil then
+      exportSlot.airdromeId = gameSlot.airdromeId
+     end
+
+     if gameSlot.helipadUnitType ~= nil then
+       exportSlot.helipadUnitType = gameSlot.helipadUnitType
+       exportSlot.helipadName = gameSlot.helipadName
+     end
+
+     table.insert(slots, exportSlot)
+  end
+
+  for _, gameSlot in ipairs(blueForSlots) do
+    local exportSlot = {
+      unitId = gameSlot.unitId,
+      type = gameSlot.type,
+      role = gameSlot.role,
+      groupName = gameSlot.groupName,
+      groupSize = gameSlot.groupSize,
+      coalition = 2 + 1,  -- Increment for non zero-indexed gRPC enum
+      task = gameSlot.task,
+      onboardNumber = gameSlot.onboard_num,
+     }
+
+     if gameSlot.airdromeId ~= nil then
+      exportSlot.airdromeId = gameSlot.airdromeId
+     end
+
+     if gameSlot.helipadUnitType ~= nil then
+       exportSlot.helipadUnitType = gameSlot.helipadUnitType
+       exportSlot.helipadName = gameSlot.helipadName
+     end
+
+     table.insert(slots, exportSlot)
+  end
+
+  return GRPC.success({slots = slots})
+end

protos/dcs/hook/v0/hook.proto

@@ -1,5 +1,6 @@
 syntax = "proto3";
 package dcs.hook.v0;
+import "dcs/common/v0/common.proto";
 option csharp_namespace = "RurouniJones.Dcs.Grpc.V0.Hook";
 option go_package = "github.com/DCS-gRPC/go-bindings/dcs/v0/hook";
 
@@ -65,6 +66,10 @@ service HookService {
 
   // https://wiki.hoggitworld.com/view/DCS_func_getUnitType
   rpc GetUnitType(GetUnitTypeRequest) returns (GetUnitTypeResponse) {}
+
+  // Should only be called once per session until ED implement dynamic spawning
+  // https://wiki.hoggitworld.com/view/DCS_func_getAvailableSlots
+  rpc GetAvailableSlotDetails(GetAvailableSlotDetailsRequest) returns (GetAvailableSlotDetailsResponse) {}
 }
 
 message GetMissionNameRequest {
@@ -215,3 +220,39 @@ message GetUnitTypeResponse {
   // Type of unit (e.g. "F-14B")
   string type = 1;
 }
+
+message GetAvailableSlotDetailsRequest {
+}
+
+message GetAvailableSlotDetailsResponse {
+  repeated AvailableSlotDetails slots = 1;
+}
+
+message AvailableSlotDetails {
+  // the unitId of the slot. For multi-crew it is two strings
+  // joined by an underscore for non-pilot slots.
+  string unitId = 1;
+  // The aiframe type associated with the slot
+  string type = 2;
+  // The place number of the slot on an aircraft
+  string multicrew_place = 3;
+  // The role of the slot (Pilot, Radar Intercept Officer etc.)
+  string role = 4;
+  // The group name associated with the slot
+  string groupName = 6;
+  // The size of the group associated with the slot
+  string group_size = 7;
+  // The task of the slot (CAP, CAS, SEAD etc.)
+  string task = 8;
+  // Coalition associated with the slot
+  dcs.common.v0.Coalition coalition = 9;
+  // Visual Number of the aircaft (e.g. MODEX on US aircraft).
+  // String to preserve leading zeroes
+  string onboard_number = 10;
+  // The ID of the airdrome associated with the slot, if any.
+  optional int32 airdrome_id = 11;
+  // The type of the unit that owns the helipad associated with this slot, if any.
+  optional string helipad_unit_type = 12;
+  // The name of the unit that owns the helipad associated with this slot, if any.
+  optional string helipad_unit_name = 13;
+}

src/rpc/hook.rs

@@ -144,4 +144,12 @@ impl HookService for HookRpc {
         let res = self.request("getUnitType", request).await?;
         Ok(Response::new(res))
     }
+
+    async fn get_available_slot_details(
+        &self,
+        request: Request<hook::v0::GetAvailableSlotDetailsRequest>,
+    ) -> Result<Response<hook::v0::GetAvailableSlotDetailsResponse>, Status> {
+        let res = self.request("getAvailableSlotDetails", request).await?;
+        Ok(Response::new(res))
+    }
 }