io.github.eliux.mega.cmd.FileInfo Maven / Gradle / Ivy

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Java client library that works on top of MEGAcmd to provide access to the services of Mega.nz
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package io.github.eliux.mega.cmd;

import io.github.eliux.mega.MegaUtils;
import io.github.eliux.mega.error.MegaInvalidResponseException;

import java.time.LocalDateTime;
import java.util.Optional;

/**
 * Defines a remote file/Folder in MEGA
 *
 * @see FileStatus
 */
public class FileInfo {

    private final String name;

    private final LocalDateTime date;

    private final Optional size;

    private final Optional version;

    private final FileStatus status;

    public FileInfo(String name, LocalDateTime date, Optional size,
                    Optional version, FileStatus status) {
        this.name = name;
        this.date = date;
        this.size = size;
        this.version = version;
        this.status = status;
    }

    public static final FileInfo parseInfo(String fileInfoStr) {
        final String[] tokens = parseTokens(fileInfoStr);
        try {
            return parseFileInfo(tokens);
        } catch (Exception ex) {
            final MegaInvalidResponseException megaEx =
                    new MegaInvalidResponseException(
                            "Error while parsing file info from %s", fileInfoStr
                    );
            megaEx.addSuppressed(ex);
            throw megaEx;
        }
    }

    public static final boolean isValid(String fileInfoStr) {
        try {
            return parseTokens(fileInfoStr).length == 6;
        } catch (MegaInvalidResponseException ex) {
            return false;
        }
    }

    private static final String[] parseTokens(String fileInfoStr) {
        final String[] tokens = fileInfoStr.replace("\\t", "\\s").split("\\s+");

        if (tokens.length != 6) {
            throw new MegaInvalidResponseException(
                    "The gotten file format is incorrect: Should have 6 tokens"
            );
        }

        return tokens;
    }

    private static final FileInfo parseFileInfo(String[] tokens) {
        String filename = parseFileName(tokens);
        final LocalDateTime date = parseDate(tokens);
        final Optional sizeInBytes = parseSizeInBytes(tokens);
        final Optional version = parseVersion(tokens);
        final FileStatus fileStatus = parseFileType(tokens);

        return new FileInfo(filename, date, sizeInBytes, version, fileStatus);
    }

    private static final String parseFileName(String[] tokens) {
        return tokens[5];
    }

    private static final LocalDateTime parseDate(String[] tokens) {
        String dateStr = tokens[3] + " " + tokens[4];
        return MegaUtils.parseFileDate(dateStr);
    }

    private static final Optional parseSizeInBytes(String[] tokens) {
        try {
            return Optional.of(Long.valueOf(tokens[2]));
        } catch (NumberFormatException ex) {
            return Optional.empty();
        }
    }

    private static final Optional parseVersion(String[] tokens) {
        try {
            return Optional.of(Integer.valueOf(tokens[1]));
        } catch (NumberFormatException ex) {
            return Optional.empty();
        }
    }

    private static final FileStatus parseFileType(String[] tokens) {
        return FileStatus.valueOf(tokens[0]);
    }

    public boolean isFile() {
        return status.getType() == FileStatus.Type.FILE;
    }

    public boolean isDirectory() {
        return status.getType() == FileStatus.Type.DIRECTORY;
    }

    public String getName() {
        return name;
    }

    public LocalDateTime getDate() {
        return date;
    }

    public Optional getSize() {
        return size;
    }

    public Optional getVersion() {
        return version;
    }

    public FileStatus getStatus() {
        return status;
    }
}