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package net.sowgro.npehero.levelapi;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
/**
* Responsible for the list of difficulties in a level
*/
public class Difficulties {
public final ObservableList<Difficulty> list = FXCollections.observableArrayList();
public final HashMap<String, Exception> problems = new HashMap<>();
private final Level level;
/**
* Creates a new Difficulties object
* @param level the file path of the level
* @throws IOException If there is a problem reading in the difficulties
*/
public Difficulties(Level level) throws IOException {
this.level = level;
read();
}
/**
* Loads difficulties
* <p>
* Creates difficulty objects out of each subfolder in the level and adds it to the list.
* @throws IOException If there is a problem reading in the difficulties
*/
public void read() throws IOException {
list.clear();
File[] fileList = level.dir.listFiles();
if (fileList == null) {
throw new FileNotFoundException();
}
for(File cur: fileList) {
if (cur.isDirectory()) {
try {
Difficulty diff = new Difficulty(cur, level);
list.add(diff);
} catch (IOException e) {
problems.put(cur.getName(), e);
e.printStackTrace();
}
}
}
list.sort(Comparator.naturalOrder());
}
/**
* Removes a difficulty
* <p>
* Recursively deletes the folder and removes it from the list
* @param diff: The difficulty to remove.
* @throws IOException If there is a problem removing the difficulty.
*/
public void remove(Difficulty diff) throws IOException {
File hold = diff.thisDir;
Files.walk(hold.toPath())
.sorted(Comparator.reverseOrder())
.map(Path::toFile)
.forEach(File::delete);
list.remove(diff);
}
/**
* Adds a difficulty
* <p>
* Creates the directory and required files
* @param text The name of the directory
* @throws IOException If there is a problem adding the level
*/
public Difficulty add(String text) throws IOException {
File diffDir = new File(level.dir, text.toLowerCase().replaceAll("\\W+", "-"));
if (diffDir.exists()) {
throw new FileAlreadyExistsException(diffDir.getName());
}
if (diffDir.mkdirs()) {
Difficulty temp = new Difficulty(diffDir, level);
temp.title = text;
list.add(temp);
list.sort(Comparator.naturalOrder());
return temp;
}
else {
throw new IOException();
}
}
/**
* Saves the order of the difficulties in the list
* <p>
* Updates the order variable of each difficulty in the list to match their index in the list
* @throws IOException If there is a problem saving the difficulty's metadata file
*/
public void saveOrder() throws IOException {
for (Difficulty d : list) {
d.order = list.indexOf(d);
d.writeMetadata();
}
}
/**
* Get a list of only the valid difficulties in the level.
* @return A list of the valid difficulties.
*/
public List<Difficulty> getValidList() {
ObservableList<Difficulty> validList = FXCollections.observableArrayList();
for (Difficulty difficulty : list) {
if (difficulty.isValid()) {
validList.add(difficulty);
}
}
return validList;
}
}
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