syntax = "proto3";
package waymaker.collections;

option go_package = "/apis/waymaker_collections";

// ============================================================
// WaymakerCollectionsService — Hash / Set / Queue data
// structures layered on streams. Each store name is the
// underlying stream name; subjects encode the
// (hash_key|set_key) + (field|member) tuple; member-existence
// uses a "1" marker payload (Set) or per-field values (Hash).
//
// Lives in its own proto + crate so the wire surface is
// composable; handlers continue to share `StreamsController`
// state in the server crate.
// ============================================================

service WaymakerCollectionsService {
  // ----- Hash -------------------------------------------------
  rpc CreateHashStore (CreateHashStoreRequest) returns (CreateHashStoreResponse);
  rpc DeleteHashStore (DeleteHashStoreRequest) returns (DeleteHashStoreResponse);
  rpc HashSet (HashSetRequest) returns (HashSetResponse);
  rpc HashGet (HashGetRequest) returns (HashGetResponse);
  rpc HashExists (HashExistsRequest) returns (HashExistsResponse);
  rpc HashDelete (HashDeleteRequest) returns (HashDeleteResponse);
  rpc HashGetAll (HashGetAllRequest) returns (HashGetAllResponse);
  rpc HashFields (HashFieldsRequest) returns (HashFieldsResponse);
  rpc HashLen (HashLenRequest) returns (HashLenResponse);

  // ----- Set --------------------------------------------------
  rpc CreateSetStore (CreateSetStoreRequest) returns (CreateSetStoreResponse);
  rpc DeleteSetStore (DeleteSetStoreRequest) returns (DeleteSetStoreResponse);
  rpc SetAdd (SetAddRequest) returns (SetAddResponse);
  rpc SetRemove (SetRemoveRequest) returns (SetRemoveResponse);
  rpc SetIsMember (SetIsMemberRequest) returns (SetIsMemberResponse);
  rpc SetMembers (SetMembersRequest) returns (SetMembersResponse);
  rpc SetLen (SetLenRequest) returns (SetLenResponse);

  // ----- Queue ------------------------------------------------
  rpc CreateQueue (CreateQueueRequest) returns (CreateQueueResponse);
  rpc DeleteQueue (DeleteQueueRequest) returns (DeleteQueueResponse);
  rpc QueuePush (QueuePushRequest) returns (QueuePushResponse);
  rpc QueuePop (QueuePopRequest) returns (QueuePopResponse);
  rpc QueueRange (QueueRangeRequest) returns (QueueRangeResponse);
  rpc QueueLen (QueueLenRequest) returns (QueueLenResponse);
}

// ===== Hash ==================================================

message CreateHashStoreRequest {
  string name = 1;
  uint64 max_bytes = 2;
  bool ephemeral = 3;
}
message CreateHashStoreResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}
message DeleteHashStoreRequest { string name = 1; }
message DeleteHashStoreResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message HashSetRequest {
  string bucket = 1;
  string hash_key = 2;
  string field = 3;
  bytes value = 4;
}
message HashSetResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  uint64 revision = 4;
}

message HashGetRequest {
  string bucket = 1;
  string hash_key = 2;
  string field = 3;
}
message HashGetResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  optional bytes value = 4;
  uint64 revision = 5;
}

message HashExistsRequest {
  string bucket = 1;
  string hash_key = 2;
  string field = 3;
}
message HashExistsResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  bool exists = 4;
}

message HashDeleteRequest {
  string bucket = 1;
  string hash_key = 2;
  string field = 3;
}
message HashDeleteResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message HashGetAllRequest {
  string bucket = 1;
  string hash_key = 2;
}
message HashGetAllResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  repeated HashFieldEntry entries = 4;
}
message HashFieldEntry {
  string field = 1;
  bytes value = 2;
  uint64 revision = 3;
}

message HashFieldsRequest {
  string bucket = 1;
  string hash_key = 2;
}
message HashFieldsResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  repeated string fields = 4;
}

message HashLenRequest {
  string bucket = 1;
  string hash_key = 2;
}
message HashLenResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  uint64 count = 4;
}

// ===== Set ====================================================

message CreateSetStoreRequest {
  string name = 1;
  uint64 max_bytes = 2;
  bool ephemeral = 3;
}
message CreateSetStoreResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}
message DeleteSetStoreRequest { string name = 1; }
message DeleteSetStoreResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message SetAddRequest {
  string bucket = 1;
  string set_key = 2;
  string member = 3;
}
message SetAddResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message SetRemoveRequest {
  string bucket = 1;
  string set_key = 2;
  string member = 3;
}
message SetRemoveResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message SetIsMemberRequest {
  string bucket = 1;
  string set_key = 2;
  string member = 3;
}
message SetIsMemberResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  bool is_member = 4;
}

message SetMembersRequest {
  string bucket = 1;
  string set_key = 2;
}
message SetMembersResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  repeated string members = 4;
}

message SetLenRequest {
  string bucket = 1;
  string set_key = 2;
}
message SetLenResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  uint64 count = 4;
}

// ===== Queue =================================================

message CreateQueueRequest {
  string name = 1;
  uint64 max_bytes = 2;
  uint64 max_messages = 3;
  bool ephemeral = 4;
}
message CreateQueueResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}
message DeleteQueueRequest { string name = 1; }
message DeleteQueueResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
}

message QueuePushRequest {
  string bucket = 1;
  bytes value = 2;
}
message QueuePushResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  uint64 sequence = 4;
}

message QueuePopRequest {
  string bucket = 1;
}
message QueuePopResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  optional bytes value = 4;
}

message QueueRangeRequest {
  string bucket = 1;
  uint64 from_sequence = 2;
  uint64 limit = 3;
}
message QueueRangeResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  repeated bytes values = 4;
}

message QueueLenRequest { string bucket = 1; }
message QueueLenResponse {
  bool success = 1;
  string result_code = 2;
  string message = 3;
  uint64 count = 4;
}