package com.platform.entities;

import java.io.File;
import java.util.HashSet;

import com.platform.utils.HttpUtils;

public class ResumableInfo {

	public int resumableChunkSize;
	public long resumableTotalSize;
	public String resumableIdentifier;
	public String resumableFilename;
	public String resumableRelativePath;

	public static class ResumableChunkNumber {
		public ResumableChunkNumber(int number) {
			this.number = number;
		}

		public int number;

		@Override
		public boolean equals(Object obj) {
			return obj instanceof ResumableChunkNumber ? ((ResumableChunkNumber) obj).number == this.number
					: false;
		}

		@Override
		public int hashCode() {
			return number;
		}
	}

	// Chunks uploaded
	public HashSet<ResumableChunkNumber> uploadedChunks = new HashSet<ResumableChunkNumber>();

	public String resumableFilePath;

	public boolean vaild() {
		if (resumableChunkSize < 0 || resumableTotalSize < 0
				|| HttpUtils.isEmpty(resumableIdentifier)
				|| HttpUtils.isEmpty(resumableFilename)
				|| HttpUtils.isEmpty(resumableRelativePath)) {
			return false;
		} else {
			return true;
		}
	}

	public boolean checkIfUploadFinished() {
		// check if upload finished
		int count = (int) Math.ceil(((double) resumableTotalSize)
				/ ((double) resumableChunkSize));
		for (int i = 1; i < count; i++) {
			if (!uploadedChunks.contains(new ResumableChunkNumber(i))) {
				return false;
			}
		}

		// Upload finished, change filename.
		File file = new File(resumableFilePath);
		String new_path = file.getAbsolutePath().substring(0,
				file.getAbsolutePath().length() - ".temp".length());
		file.renameTo(new File(new_path));
		return true;
	}
}