InvalidFileError.java

package uk.ac.ic.wlgitbridge.snapshot.servermock.response.push.postback.invalidfile;

import com.google.gson.JsonObject;

/**
 * Created by Winston on 09/01/15.
 */
public abstract class InvalidFileError {

    private final String file;

    public InvalidFileError(String file) {
        this.file = file;
    }

    public JsonObject toJson() {
        JsonObject jsonThis = new JsonObject();
        jsonThis.addProperty("file", file);
        jsonThis.addProperty("state", getState());
        return jsonThis;
    }

    protected abstract String getState();

    public static InvalidFileError buildFromJsonError(JsonObject error) {
        String state = error.get("state").getAsString();
        String file = error.get("file").getAsString();
        if (state.equals("error")) {
            return new InvalidFileErrorDefault(file);
        } else if (state.equals("disallowed")) {
            return new InvalidFileErrorDisallowed(file);
        } else if (state.equals("unclean_name")) {
            return new InvalidFileErrorUnclean(file, error.get("cleanFile").getAsString());
        } else {
            throw new IllegalArgumentException("bad invalid file state: " + state);
        }
    }

}