@startuml

!include style.ipuml

' !include hide-groups.ipuml
' !include hide-details.ipuml

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)
}

rectangle Group_FileReading as "File reading" <<group>> {
	class FileReaderFactory <<Factory>> {
		+ open(url) : FileReader&
	}
	interface FileReader {
		+ read() : string
		+ close()
		--
		# open(string url)
		# clone() : FileReader* <<const>>
	}
	class LocalFileReader {
		- instance : LocalFileReader <<static>>
	}
	class HTTPFileReader {
		- instance : HTTPFileReader <<static>>
	}
	package CPR { }

	FileReader <|.u. LocalFileReader
	FileReader <|.u. HTTPFileReader

	FileReader .l> FileReaderFactory
	FileReader <. FileReaderFactory

	HTTPFileReader -l> CPR

	' LAYOUT
	HTTPFileReader -r[hidden] LocalFileReader
}
rectangle Group_ParsingDeserialization as "Parsing & deserialization" <<group>> {
	class ParserFactory {
		+ parse(FileReader &, MuseumDeserializer &) <<static>>
		+ register_strategy(Parser *) <<static>>
		--
		- get_collection() : ParserCollection <<static>>
	}
	interface Parser  {
		+ parse(FileReader &, MuseumDeserializer &) <<static>>
		+ heuristic(FileReader &) : unsigned int <<static>>
	}

	Parser .> ParserFactory
	Parser <. ParserFactory

	class CSVParser
	class XMLParser
	class TXTParser

	package pugixml { }

	CSVParser ..|> Parser
	TXTParser ..|> Parser
	XMLParser ..|> Parser

	XMLParser -> pugixml

	class MuseumDeserializer {
		+ MuseumDeserializer(Museum &)
		--
		+ set_canvas(CanvasData)
		+ set_tile(TileData)
		+ add_artist(ArtistData)
		+ add_type(type : string, Color, weight : unsigned int)
	}

	CSVParser -up-> MuseumDeserializer
	XMLParser -up-> MuseumDeserializer
	TXTParser -up-> MuseumDeserializer

	' LAYOUT
	CSVParser -r[hidden] TXTParser
	TXTParser -r[hidden] XMLParser
}

rectangle Group_Algorithms as "Algorithms" <<group>> {
	class PathfindingContext {
		+ PathfindingContext(Museum &)
	}
	class CollisionContext {
		+ CollisionContext(Museum &)
	}

}
rectangle Group_Model as "Model" <<group>> {
	class Museum {
		+ people : People
		+ canvas : Canvas
		--
		+ update()
		--
		- paused : bool <<+get>> <<+set>>
		- jump : unsigned long
		--
		- working : bool
		- worker : thread *
		- work()
	}
	class Canvas {
		+ Canvas(Museum &)
		--
		+ get_tile(x, y) : Tile &
		+ set_tile(TileData)
		--
		+ update()
		+ data : CanvasData
		+ set_data(CanvasData)
		--
		- tiles : vector<Tile *>
		- museum : Museum &
	}
	class People {
		+ People(Museum &)
		--
		+ add_artist(ArtistData)
		+ remove_artist(Artist &)
		+ get_artists() : forward_list<Artist *>
		--
		- artists : forward_list<Artist *>
		- artist_count : size_t
		- museum : Museum &
	}
	class Tile {
		+ data : TileData
		+ color : Color
		+ behavior : uniq<TileBehavior>
		+ set_data(TileData &)
		+ set_type(type : const string &)
		+ update()
		+ get_neighbor(dx, dy) : Tile *
		--
		- museum : Museum &
	}
	struct TileData {
		+ x : unsigned int
		+ y : unsigned int
		+ type : string
	}
	class Artist {
		+ update()
		+ step : bool
		+ color : Color
		+ data : ArtistData
		--
		- data : ArtistData
		- museum : Museum &
	}
	struct ArtistData {
		+ x : float
		+ y : float
		+ vx : float
		+ vy : float
	}
	struct CanvasData {
		+ rows : unsigned int
		+ columns : unsigned int
	}

	struct Color {
		red : unsigned int
		green : unsigned int
		blue : unsigned int
	}
	class TileColorFactory <<singleton>> {
		+ get_color(string) : Color <<static>>
		+ register_color(string, Color) <<static>>
	}

	interface TileBehavior {
		+ step(Artist *)
		+ update(Tile &)
		--
		# TileBehavior(Museum &)
		--
		# interactions : unsigned int
		# museum : Museum &
	}

	class TileBehaviorFactory {
		+ TileBehaviorFactory(Museum &)
		+ create(string) : uniq<TileBehavior>
		--
		- museum : Museum &
	}

	together {
		class NullTileBehavior {
			- type = "" <<static constexpr>>
		}
		class StepTileBehavior {
			- type = "G" : <<static constexpr>>
		}
		class DeleteArtistTileBehavior {
			- type = "R" : <<static constexpr>>
		}
		class SetNeighborTileBehavior {
			- type = "B" : <<static constexpr>>
			--
			- dx : int
			- dy : int
		}
		class CreateArtistTileBehavior {
			- type = "Y" : <<static constexpr>>
			--
			- last_interactions : unsigned int
		}
	}

	Museum --> People
	Museum --> Canvas

	Canvas --> Tile
	People --> Artist

	Tile   -> TileData
	Artist -l> ArtistData
	Canvas -> CanvasData

	Tile --> "state" Color
	Tile .[norank].> TileColorFactory

	TileColorFactory .> Color

	TileBehavior <|.. NullTileBehavior
	TileBehavior <|.. StepTileBehavior
	TileBehavior <|.. DeleteArtistTileBehavior
	TileBehavior <|.. SetNeighborTileBehavior
	TileBehavior <|.. CreateArtistTileBehavior

	TileBehaviorFactory --> NullTileBehavior
	TileBehaviorFactory --> StepTileBehavior
	TileBehaviorFactory --> DeleteArtistTileBehavior
	TileBehaviorFactory --> SetNeighborTileBehavior
	TileBehaviorFactory --> CreateArtistTileBehavior

	Tile --> "state" TileBehavior
	Tile .[norank].> TileBehaviorFactory

	TileBehaviorFactory .l> TileBehavior
	TileBehaviorFactory <. TileBehavior

	' LAYOUT
	Artist -r[hidden] Tile
}

together { /' LAYOUT '/
rectangle Group_Visualization as "Visualization" <<group>> {
	struct Rectangle {
		x : unsigned int
		y : unsigned int
		width : unsigned int
		height : unsigned int
	}
	enum MouseCode { }
	enum KeyboardCode { }
	package SDL3 { }

	class View {
		+ window_size(width, height)
		+ dialog_file(callback : fn(files : vec<string>, data), data)
		+ draw_rect(Rectangle, Color)
		--
		- window : SDL_Window *
		- renderer : SDL_Renderer *
		--
		+ open : bool
		- worker : thread *
		- work()
	}
	class ViewController {
		+ update()
		+ ev_keydown(KeyboardCode);
		+ ev_mousedown(MouseCode);
		+ ev_mousemove(x, y);
		--
		- draw_artists : bool <<+get>> <<+set>>
	}

	ViewController ..> View
	ViewController <-- View
	View --> SDL3

	View .l> Rectangle
	ViewController .l> KeyboardCode
	ViewController .l> MouseCode
}
rectangle Group_Commands as "Commands" <<group>> {
	interface Command {
		+ execute()
	}

	class ToggleMuseumPauseCommand {
		+ constructor(Museum &)
		+ constructor(Museum &, set : bool)
		--
		toggle : bool
		value : bool
	}
	class OpenFileGUICommand {
		+ constructor(Museum &, View &)
		--
		- museum : Museum &
		- view : View &
	}
	class ToggleArtistVisibilityCommand {
		+ constructor(ViewController &)
		--
		- controller : ViewController &
	}
	class LoadFilesCommand {
		+ constructor(Museum &, files : vec<string>)
		+ constructor(Museum &, argc, argv)
		--
		- load_files()
		- museum : Museum &
		- files : vec<string>
	}
	class StepTileCommand {
		+ constructor(Canvas &, pair<x, y>)
		--
		- canvas : Canvas &
		- x : unsigned int
		- y : unsigned int
	}
	class TimeTravelCommand {
		+ constructor(Museum &, forwards : bool)
		--
		- museum : Museum &
		- forwards : bool
	}

	Command <|-d- ToggleMuseumPauseCommand
	Command <|-u- OpenFileGUICommand
	Command <|-u- ToggleArtistVisibilityCommand
	Command <|-d- StepTileCommand
	Command <|-d- LoadFilesCommand
	Command <|-d- TimeTravelCommand
}
} /' LAYOUT '/

Parser .l> FileReader
MuseumDeserializer .l> Museum

Museum --> PathfindingContext
Museum --> CollisionContext

ViewController -[norank]> Command

main -d-> Museum
main -u-> LoadFilesCommand
' main -[norank]> MuseumDeserializer
main -[norank]> View
main .r> Exception

@enduml