package funkin.play.song; import funkin.play.song.SongData.SongChartData; import funkin.play.song.SongData.SongMetadata; import funkin.util.SerializerUtil; import lime.utils.Bytes; import openfl.events.Event; import openfl.events.IOErrorEvent; import openfl.net.FileReference; /** * Utilities for exporting a chart to a JSON file. * Primarily used for the chart editor. */ class SongSerializer { /** * Access a SongChartData JSON file from a specific path, then load it. * @param path The file path to read from. */ public static function importSongChartDataSync(path:String):SongChartData { var fileData = readFile(path); if (fileData == null) return null; var songChartData:SongChartData = fileData.parseJSON(); return songChartData; } /** * Access a SongMetadata JSON file from a specific path, then load it. * @param path The file path to read from. */ public static function importSongMetadataSync(path:String):SongMetadata { var fileData = readFile(path); if (fileData == null) return null; var songMetadata:SongMetadata = fileData.parseJSON(); return songMetadata; } /** * Prompt the user to browse for a SongChartData JSON file path, then load it. * @param callback The function to call when the file is loaded. */ public static function importSongChartDataAsync(callback:SongChartData->Void):Void { browseFileReference(function(fileReference:FileReference) { var data = fileReference.data.toString(); if (data == null) return; var songChartData:SongChartData = data.parseJSON(); if (songChartData != null) callback(songChartData); }); } /** * Prompt the user to browse for a SongMetadata JSON file path, then load it. * @param callback The function to call when the file is loaded. */ public static function importSongMetadataAsync(callback:SongMetadata->Void):Void { browseFileReference(function(fileReference:FileReference) { var data = fileReference.data.toString(); if (data == null) return; var songMetadata:SongMetadata = data.parseJSON(); if (songMetadata != null) callback(songMetadata); }); } /** * Save a SongChartData object as a JSON file to an automatically generated path. * Works great on HTML5 and desktop. */ public static function exportSongChartData(data:SongChartData, songId:String) { var path = '${songId}-chart.json'; exportSongChartDataAs(path, data); } /** * Save a SongMetadata object as a JSON file to an automatically generated path. * Works great on HTML5 and desktop. */ public static function exportSongMetadata(data:SongMetadata, songId:String) { var path = '${songId}-metadata.json'; exportSongMetadataAs(path, data); } /** * Save a SongChartData object as a JSON file to a specified path. * Works great on HTML5 and desktop. * * @param path The file path to save to. */ public static function exportSongChartDataAs(path:String, data:SongChartData) { var dataString = SerializerUtil.toJSON(data); writeFileReference(path, dataString); } /** * Save a SongMetadata object as a JSON file to a specified path. * Works great on HTML5 and desktop. * * @param path The file path to save to. */ public static function exportSongMetadataAs(path:String, data:SongMetadata) { var dataString = SerializerUtil.toJSON(data); writeFileReference(path, dataString); } /** * Read the string contents of a file. * Only works on desktop platforms. * @param path The file path to read from. */ static function readFile(path:String):String { #if sys var fileBytes:Bytes = sys.io.File.getBytes(path); if (fileBytes == null) return null; return fileBytes.toString(); #end trace('ERROR: readFile not implemented for this platform'); return null; } /** * Write string contents to a file. * Only works on desktop platforms. * @param path The file path to read from. */ static function writeFile(path:String, data:String):Void { #if sys sys.io.File.saveContent(path, data); return; #end trace('ERROR: writeFile not implemented for this platform'); return; } /** * Browse for a file to read and execute a callback once we have a file reference. * Works great on HTML5 or desktop. * * @param callback The function to call when the file is loaded. */ static function browseFileReference(callback:FileReference->Void) { var file = new FileReference(); file.addEventListener(Event.SELECT, function(e) { var selectedFileRef:FileReference = e.target; trace('Selected file: ' + selectedFileRef.name); selectedFileRef.addEventListener(Event.COMPLETE, function(e) { var loadedFileRef:FileReference = e.target; trace('Loaded file: ' + loadedFileRef.name); callback(loadedFileRef); }); selectedFileRef.load(); }); file.browse(); } /** * Prompts the user to save a file to their computer. */ static function writeFileReference(path:String, data:String) { var file = new FileReference(); file.addEventListener(Event.COMPLETE, function(e:Event) { trace('Successfully wrote file.'); }); file.addEventListener(Event.CANCEL, function(e:Event) { trace('Cancelled writing file.'); }); file.addEventListener(IOErrorEvent.IO_ERROR, function(e:IOErrorEvent) { trace('IO error writing file.'); }); file.save(data, path); } }