package migl.util;

import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.stream.Stream;

public class FileGet {
	
	private File file;
	private String before;
	
	public FileGet(String path) {
		this(path, "");
	}
	
	public FileGet(String path, String before) {
		this.file = new File(path);
		this.before = before;
	}
	
	public boolean exists() {
		return this.file.exists();
	}
	
	public boolean findFile(String fileName) {
		if(!this.exists()) {
			return false;
		}
		File[] files = this.file.listFiles();
		for(File f : files) {
			if(f.getName().equals(fileName)) {
				this.file = f;
				return true;
			}
		}
		return false;
	}
	
	public String getFiles() {
		if(!this.exists()) {
			return null;
		}
		if(!this.file.isDirectory()) {
			return this.getContent();
		}
		StringBuilder sb = new StringBuilder(this.before);
		File[] files = this.file.listFiles();
		for(File f : files) {
			sb.append(f.getName() + "\n");
		}
		return sb.toString();
	}
	
	public String getContent() {
		if(!this.exists()) {
			return null;
		}
		if(!this.file.isFile()) {
			return this.getFiles();
		}
		StringBuilder sb = new StringBuilder(this.before);
		try(Stream<String> stream = Files.lines(Paths.get(this.file.getAbsolutePath()), StandardCharsets.UTF_8)){
			stream.forEach(s -> sb.append(s + "\n"));
		} catch(IOException ex) {
			return null;
		}
		return sb.toString();
	}

}