package textsecure;

option java_package = "org.whispersystems.textsecure.internal.push";
option java_outer_classname = "TextSecureProtos";

message Envelope {
  enum Type {
    UNKNOWN       = 0;
    CIPHERTEXT    = 1;
    KEY_EXCHANGE  = 2;
    PREKEY_BUNDLE = 3;
    RECEIPT       = 5;
  }

  optional Type   type          = 1;
  optional string source        = 2;
  optional uint32 sourceDevice  = 7;
  optional string relay         = 3;
  optional uint64 timestamp     = 5;
  optional bytes  legacyMessage = 6; // Contains an encrypted DataMessage
  optional bytes  content       = 8; // Contains an encrypted Content
}

message Content {
  optional DataMessage dataMessage = 1;
  optional SyncMessage syncMessage = 2;
  optional CallMessage callMessage = 3;
}

message CallMessage {
  message Offer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message Answer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message IceUpdate {
    optional uint64 id            = 1;
    optional string sdpMid        = 2;
    optional uint32 sdpMLineIndex = 3;
    optional string sdp           = 4;
  }

  message Busy {
    optional uint64 id = 1;
  }

  message Hangup {
    optional uint64 id = 1;
  }


  optional Offer     offer     = 1;
  optional Answer    answer    = 2;
  repeated IceUpdate iceUpdate = 3;
  optional Hangup    hangup    = 4;
  optional Busy      busy      = 5;
}

message DataMessage {
  enum Flags {
    END_SESSION = 1;
    EXPIRATION_TIMER_UPDATE = 2;
  }

  optional string             body        = 1;
  repeated AttachmentPointer  attachments = 2;
  optional GroupContext       group       = 3;
  optional uint32             flags       = 4;
  optional uint32             expireTimer = 5;
}

message SyncMessage {
  message Sent {
    optional string  destination = 1;
    optional uint64  timestamp   = 2;
    optional DataMessage message = 3;
    optional uint64  expirationStartTimestamp = 4;
  }

  message Contacts {
    optional AttachmentPointer blob = 1;
  }

  message Groups {
    optional AttachmentPointer blob = 1;
  }

  message Blocked {
    repeated string numbers = 1;
  }

  message Request {
    enum Type {
      UNKNOWN     = 0;
      CONTACTS    = 1;
      GROUPS      = 2;
      BLOCKED     = 3;
    }
    optional Type type = 1;
  }
  message Read {
    optional string sender    = 1;
    optional uint64 timestamp = 2;
  }

  optional Sent     sent     = 1;
  optional Contacts contacts = 2;
  optional Groups   groups   = 3;
  optional Request  request  = 4;
  repeated Read     read     = 5;
  optional Blocked  blocked  = 6;
}

message AttachmentPointer {
  optional fixed64 id          = 1;
  optional string  contentType = 2;
  optional bytes   key         = 3;
  optional uint32  size        = 4;
  optional bytes   thumbnail   = 5;
  optional bytes   digest      = 6;
}

message GroupContext {
  enum Type {
    UNKNOWN = 0;
    UPDATE  = 1;
    DELIVER = 2;
    QUIT    = 3;
  }
  optional bytes             id      = 1;
  optional Type              type    = 2;
  optional string            name    = 3;
  repeated string            members = 4;
  optional AttachmentPointer avatar  = 5;
}

message Avatar {
  optional string contentType = 1;
  optional uint32 length      = 2;
}

message GroupDetails {
  optional bytes  id      = 1;
  optional string name    = 2;
  repeated string members = 3;
  optional Avatar avatar  = 4;
  optional bool   active  = 5 [default = true];
}

message ContactDetails {
  optional string number = 1;
  optional string name   = 2;
  optional Avatar avatar = 3;
  optional string color  = 4;
}