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;
    // encoded as fixed32 length delimited  
   repeated OsmAndTransportIndex transportIndex = 4;
   
   // last field should version again (to check consistency)
   required uint32 versionConfirm = 32;
}

/** 
  String table, contains the common strings in each block.
 */
message StringTable {
   repeated string s = 1;
} 


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;
}




/// 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 messages

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

	// encoded as fixed32 length delimited
	optional PostcodesIndex postcodes = 6;
	
	// encoded as fixed32 length delimited
	optional CitiesIndex villages = 7; // suburbs and villages
}

message CitiesIndex {
	// encoded as fixed32 length delimited
    repeated CityIndex cities = 1;
}

message PostcodesIndex {
	// encoded as fixed32 length delimited
    repeated PostcodeIndex postcodes = 1;
}

message CityIndex {
	// should be written the first
    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
	
	optional InteresectedStreets intersections = 14;
	
	repeated StreetIndex streets = 18; 
}

message InteresectedStreets {
    repeated StreetIntersection intersections = 5;
}

message StreetIntersection {
	required uint32 intersectedStreet1 = 2; // index of street in parent list
	required uint32 intersectedStreet2 = 3; // index of street in parent list
	required sint32 intersectedX = 4; // delta encoded to parent x 24 zoom
	required sint32 intersectedY = 5; // delta encoded to parent y 24 zoom
}



message PostcodeIndex {
    required string postcode = 1;
    required fixed32 x = 2; // x tile of 31 zoom
	required fixed32 y = 3; // y tile of 31 zoom
    repeated StreetIndex streets = 5;
}

message StreetIndex {
	required string name = 1;
	optional string name_en = 2;
	
	required sint32 x = 3; // delta encoded to parent 24 zoom
	required sint32 y = 4; // delta encoded to parent 24 zoom
	
	optional uint64 id = 6;
	
	
	repeated BuildingIndex buildings = 18;
} 

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

// transport messages

message TransportRoute {
   required uint64 id = 1;
   
   optional uint32 type = 3; // reference in string table
   optional uint32 operator = 4; // reference in string table
   optional string ref = 5;
   optional uint32 name = 6; // reference in string table
   optional uint32 name_en = 7; // reference in string table
   optional uint32 distance = 8; // distance in meters
   
   repeated TransportRouteStop directStops = 15;
   repeated TransportRouteStop reverseStops = 16; 
}

message TransportRouteStop {
   required sint64 id = 1; // delta encoded to previous stop (first stop is delta to 0)
   required sint32 dx = 2; // delta encoded to previous stop (24 zoom)
   required sint32 dy = 3; // delta encoded to previous stop (24 zoom)
   
   required uint32 name = 6; // index in message table
   optional uint32 name_en = 7; // index in message table
}

message TransportStop {
   required sint64 id = 1; // delta encoded to parent base id
   required sint32 dx = 2; // delta encoded to parent (24 zoom) to left
   required sint32 dy = 3; // delta encoded to parent (24 zoom) to top
   
   required uint32 name = 6; // index in message table
   optional uint32 name_en = 7; // index in message table
   
   repeated uint32 routes = 16; // -shift to transport route containing that stop 
   								// TransportStop.Message.start - routes[i] = TransportRoute.Message.start - sizeof(TransportRoute.Message.length)
   								// message is started when body is started 
 
}

message TransportStopsTree {
   required sint32 left = 1; // delta encoded (24 zoom)
   required sint32 right = 2; // delta encoded (24 zoom)
   required sint32 top = 3; // delta encoded (24 zoom)
   required sint32 bottom = 4; // delta encoded (24 zoom)
   
   // encoded as fixed32 length delimited
   repeated TransportStopsTree subtrees = 7;
   
   repeated TransportStop leafs = 8;
   
   // written as last
   optional uint64 baseId = 16;
}
			
message OsmAndTransportIndex {
	
	repeated TransportRoute routes = 3; // routes 

	// encoded as fixed32 length delimited
	optional TransportStopsTree stops = 6;
	
	
	required StringTable stringTable = 9;
}