syntax = "proto3";
package meowlib;
option go_package = "forge.redroom.link/yves/meowlib";

// structure for sending a message intended for server use in protobuf format
message PackedServerMessage {
	string From = 1;
	bytes Payload = 2;
	bytes Signature = 3;
}

// structure for sending a message to be forwarded to another user in protobuf format
message PackedUserMessage {
	string From = 1; 
	string Destination=2; 
    bytes Payload=3;
	bytes Signature=4;
}

// structure defining a message encrypted, then sent in a "packedmessage" payload
message ToServerMessage {
	string Type = 1; // Type 
	string ServerPubKey = 2 ; // My pub key for the server to send me an encrypter answer
	bytes Payload = 3 ; // optional payload for server

    message ConversationRequest {  // Structure for requestion incoming messages
        string lookupKey = 1; // lookup key for a conversation
        string LastServerUuidOK = 2; // Last Server message UUID received (send me all after that one)
        bool PublishOnline = 3; // ?? Publish my online status for that contact ?
        string lookupSignature = 4; // prove that I own the private key by signing that block
    } 
 
    repeated ConversationRequest PullRequest = 7; 

    message PostedMessage{
        string lookupKey= 1;
        repeated PackedUserMessage Messages = 2;
    }
	repeated PostedMessage Messages = 9; 
	string NextServerKey = 10; 
	string Url = 11; 
}

// structure defining a from serve receiver message decrypted from a "packedmessage" payload
message FromServerMessage {
	string Type = 1; // Type 
	string ServerPubKey = 2 ; // My pub key for the server to send me an encrypter answer
	bytes Payload = 3 ; // 
	uint64 ServerReceived = 4 ; 
	string ServerUuid = 5 ;

    message ConversationResponse {
        repeated string MessageUuids = 1;
    }

	map<string,ConversationResponse> PullResponse = 8; 

    message PostedMessage{
        string lookupKey= 1;
        repeated PackedUserMessage Messages = 2;
    }
	repeated PostedMessage Messages = 9; 
	string NextServerKey = 10; 
	string Url = 11; 
}

message Server {
    string	Name = 1; 
    string Description=2; 
    string PublicKey = 3; 
    string Url = 4; 
    int32 ConfidenceLevel = 5; 
}

message MinimalContact {
    string name=1;
    string publicKey=2;
    repeated Server TrustedServers = 3;
}

message UserMessage {
 
	string Destination = 1; 
	string From = 2; 
	string Type = 3; 
	bytes Data = 4; 
    message ConversationStatus {
        string LocalUuid = 1; 
        uint64 LocalSequence = 2 ;
        uint64 Sent = 3 ; 
        uint64 Received = 4; 
        uint64 Processed = 5; 
        string NextCkey = 6;        // contact key
        bool NextCkeyAck = 7; // false when proposing a new id, true for accepting it
        string NextEkey = 8;           // encryption key
        bool NextKeyEkeyAck = 9; // false when proposing a new key, true for accpeting it
        string NextLkey = 10;       // lookup key
        bool NextLkeyAck = 11; // false when proposing a new id, true for accepting it
    }
    ConversationStatus Status = 5;


    MinimalContact contact = 6;

    message Group{
        string name=1;
        repeated MinimalContact members = 2;
    }
    Group group = 7;
}