@startuml

' TODO:
' - state snapshots (memento)
' - send commands from GUI

!theme plain
skinparam Linetype ortho
skinparam ClassAttributeIconSize 0
skinparam ClassFontStyle bold
skinparam DefaultFontName Inter
skinparam DefaultFontSize 14
skinparam MaxMessageSize 200
' skinparam Nodesep 25
skinparam Padding 2
' skinparam Ranksep 50
skinparam RoundCorner 0
skinparam PackageStyle rectangle
hide <<irrelevant>> stereotype
hide <<irrelevant>> members

class main as "main()"
hide main circle
hide main members

exception Exception {
	+ Exception(const char* fmt, ...)
	+ what() : const char*
	# error : char*
	# va_format(va_list args, const char* fmt)
}

class FileReader <<Factory>> {
	+open(url) : File&
}

interface File {
	# open(string url)
	+ close()
	+ read() : string
	# clone() const : File*
}

class LocalFile {
	- instance : LocalFile <<static>>
}
class HTTPFile {
	- instance : HTTPFile <<static>>
}

class Canvas {
	+ get_tile(x, y)
	+ set_tile(x, y)
	- tiles : Tile[]
}

class Artists {
	- artists : Artist[]
}

class World {
	+ load : 
	- artists : Artists
	- canvas : Canvas
}

class Tile

class TileAppearance

class TileBehavior

class GrayTileBehavior
class RedTileBehavior
class BlueTileBehavior
class YellowTileBehavior

class Artist

class Deserializer
class ArtistsDeserializer {
	+ set_target(Artists &)
	--
	+ add_artist(float, float, float, float)
}
class CanvasDeserializer {
	+ set_target(Canvas &)
	--
	+ set_meta_rows(unsigned int)
	+ set_meta_cols(unsigned int)
	+ add_meta_type(string, Color, unsigned int)
	+ add_tile(unsigned int, unsigned int, string)
}

struct Color {
	red : unsigned int
	green : unsigned int
	blue : unsigned int
}

package CPR {
	class Response <<irrelevant>>
	class Url <<irrelevant>>
}
package SDL2 { }

interface Parser {
	+ parse(File)
	+ heuristic(File) : unsigned int
}

class CSVParser
class XMLParser
class TXTParser

File <|.. LocalFile
File <|.. HTTPFile

File <. FileReader
File .> FileReader

Canvas  "1" -> "*" Tile
Artists "1" -> "*" Artist

TileBehavior <|-- GrayTileBehavior
TileBehavior <|-- RedTileBehavior
TileBehavior <|-- BlueTileBehavior
TileBehavior <|-- YellowTileBehavior

Parser <|-- CSVParser
Parser <|-- TXTParser
Parser <|-- XMLParser

Deserializer <|-- ArtistsDeserializer
Deserializer <|-- CanvasDeserializer

HTTPFile --> CPR.Response
CPR.Response - CPR.Url

ArtistsDeserializer <... Artists
CanvasDeserializer  <... Canvas

World <-- Artists
World <-- Canvas

CanvasDeserializer .r Color

File <.. Parser

' LAYOUT
ArtistsDeserializer -r[hidden] CanvasDeserializer

@enduml