syntax = "proto3";

package dcache;

//message GetRequest { string key = 1; }
//
//message GetReply {
//  bool ok = 1;
//  string value = 2;
//}

message Level {
    uint32 visitor_threshold = 301;
    uint32 difficulty_factor= 302;
}

message Defense {
    repeated Level levels = 401;
}
message MCaptcha {
	uint32 visitor_threshold = 501;
	uint64 duration = 502;
	Defense defense = 503;
}

message AddCaptcha {
	string id = 601;
	MCaptcha mcaptcha = 602;
}


message RenameCaptcha {
	string name = 701;
	string rename_to = 702;
}


message CachePoW {
	string string= 801;
	uint32 difficulty_factor = 802;
	uint64 duration = 803;
	string key = 804;
}

message CacheResult {
	string token =  817;
	string key = 818;
	uint64 duration= 819;
}

message DeleteCaptchaResult {
	string token = 821;
}


message DcacheRequest {
    oneof DcacheRequest {
        string AddVisitor = 1;
		AddCaptcha add_captcha = 2;
        RenameCaptcha rename_captcha = 3;
        string remove_captcha = 4;
		CachePoW cache_pow = 5;






        string delete_pow = 6;
		CacheResult cache_result = 7;
		DeleteCaptchaResult delete_captcha_result = 8;
    }
}

message AddVisitorResult {
    uint64 duration = 901;
    uint32 difficulty_factor = 902;
}

message OptionAddVisitorResult {
		optional AddVisitorResult result = 911;

}

message DcacheResponse {
    oneof DcacheResponse {
		OptionAddVisitorResult option_add_visitor_result = 1;
        uint32 empty = 2;
	}
}

message RaftRequest {
  string data = 1;
}

message RaftReply {
  string data = 1;
  string error = 2;
}
//
//message HandshakeRequest {
//  uint64 protocol_version = 1;
//  bytes payload = 2;
//}
//
//message HandshakeResponse {
//  uint64 protocol_version = 1;
//  bytes payload = 2;
//}
message Learner {
    uint64 id = 1;
    string addr = 2;
}

service DcacheService {

  rpc AddLearner(Learner) returns (RaftReply) {}
  rpc Write(RaftRequest) returns (RaftReply) {}
//  rpc Get(GetRequest) returns (GetReply) {}

  /// Forward a request to other
  rpc Forward(RaftRequest) returns (RaftReply) {}

  // raft RPC

  rpc AppendEntries(RaftRequest) returns (RaftReply);
  rpc InstallSnapshot(RaftRequest) returns (RaftReply);
  rpc vote(RaftRequest) returns (RaftReply);
}

//service Dcache {
//  // handshake
//  rpc Handshake(HandshakeRequest) returns (HandshakeResponse);
//
//  // message
//  rpc WriteMsg(RaftRequest) returns (RaftReply);
////  rpc ReadMsg(GetRequest) returns (GetReply);
//}