option java_package = "net.osmand.binary";
//protoc --java_out=../.. osmand_odb.proto


//
//  STORAGE LAYER: Storing primitives.
//

// IMPORTANT :  These messages are not intented to be parsed by google engine (because of the size)
 // The main difference that size of that messages is not var int and is always fixed int size
message OsmAndStructure {
   required uint32 version = 1;
   // encoded as fixed32 length delimited
   repeated OsmAndMapIndex mapIndex = 2;
   // encoded as fixed32 length delimited  
   repeated OsmAndAddressIndex addressIndex = 3;
} 


message OsmAndMapIndex {
   // encoded as fixed32 length delimited 
   repeated MapRootLevel levels = 1;  
}

message MapRootLevel {
   required int32 maxZoom = 1;
   required int32 minZoom = 2;
   required int32 left = 3; 
   required int32 right = 4; 
   required int32 top = 5; 
   required int32 bottom = 6;
   
   // encoded as fixed32 length delimited
   repeated MapTree root = 7;
   
}

message MapTree {
   required sint32 left = 1; // delta encoded
   required sint32 right = 2; // delta encoded
   required sint32 top = 3; // delta encoded
   required sint32 bottom = 4; // delta encoded
   
   optional StringTable stringTable = 5;
   optional uint64 baseId = 6;
   
   // encoded as fixed32 length delimited
   repeated MapTree subtrees = 7;
   
   repeated MapData leafs = 8;
   
}

// These messages could be read directly
/** 
  String table, contains the common strings in each block.
 */
message StringTable {
   repeated string s = 1;
}


/// Simple messages
message MapData {
  required bytes coordinates = 1; // array of delta x,y sint32 (CodedIinputStream) >> 5
  								 // first x delta to Tree.left, y to delta Tree.top (next delta to previous)
  required bytes types = 2; // array of fixed int16
  
  required sint64 id = 3; // delta encoded
  optional uint32 stringId = 4;
  
  optional bytes restrictions = 5; // array of SInt64 delta encoded (to baseId !)
  optional int32 highwayMeta = 6; 
}


/// ADDRESS INFORMATION TEST -----

message OsmAndAddressIndex {
	
	required string name = 1;
	optional string name_en = 2;
	
	// encoded as fixed32 length delimited
	repeated CityIndex cityIndex= 5; // cities and towns 

	repeated PostcodeIndex postcodes= 6;
	
	repeated CityIndex villages = 7; // suburbs and villages
}

message CityIndex {
    required uint32 city_type = 1; // 0-5 enum CityType
	required string name = 2;
	optional string name_en = 3;
	optional uint64 id = 4;
	
	required fixed32 x = 5; // x tile of 31 zoom
	required fixed32 y = 6; // y tile of 31 zoom
	
	repeated StreetIndex streets = 7; 
}

message PostcodeIndex {
    required string postcode = 1;
    repeated StreetIndex streets = 5;
}

message StreetIndex {
	required string name = 1;
	optional string name_en = 2;
	
	optional uint64 id = 6;
	
	required sint32 x = 3; // delta encoded to parent 24 zoom
	required sint32 y = 4; // delta encoded to parent 24 zoom
	
	repeated BuildingIndex buildings = 5;
} 

message BuildingIndex {
	required string name = 1;
	optional string name_en = 2;
	optional uint64 id = 5;
	
	required sint32 x = 3; // delta encoded to street 24 zoom
	required sint32 y = 4; // delta encoded to street 24 zoom
	
}