package uk.ac.ic.wlgitbridge.snapshot.getforversion;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
import uk.ac.ic.wlgitbridge.data.filestore.RawFile;
import uk.ac.ic.wlgitbridge.snapshot.base.JSONSource;

/*
 * Created by Winston on 06/11/14.
 */
public class SnapshotFile extends RawFile implements JSONSource {

  private String path;
  private byte[] contents;

  public SnapshotFile(JsonElement json) {
    fromJSON(json);
  }

  @Override
  public String toString() {
    return "SnapshotFile(path: " + path + ", contents: byte[" + contents.length + "])";
  }

  @Override
  public void fromJSON(JsonElement json) {
    JsonArray jsonArray = json.getAsJsonArray();
    contents = jsonArray.get(0).getAsString().getBytes();
    path = jsonArray.get(1).getAsString();
  }

  @Override
  public String getPath() {
    return path;
  }

  @Override
  public byte[] getContents() {
    return contents;
  }

  @Override
  public long size() {
    return contents.length;
  }

  /* Mock server */

  public SnapshotFile(String contents, String path) {
    this.path = path;
    if (contents != null) {
      this.contents = contents.getBytes();
    } else {
      this.contents = new byte[0];
    }
  }

  public JsonElement toJson() {
    JsonArray jsonThis = new JsonArray();
    jsonThis.add(new JsonPrimitive(new String(contents)));
    jsonThis.add(new JsonPrimitive(path));
    return jsonThis;
  }
}