package com.paypal;

import com.paypal.core.PayPalEnvironment;
import com.paypal.core.PayPalHttpClient;
import java.util.Iterator;
import org.apache.commons.lang3.StringUtils;
import org.json.JSONObject;

public class PayPalClient {
  private PayPalEnvironment environment = new PayPalEnvironment.Sandbox(
      (System.getProperty("PAYPAL_CLIENT_ID") != null) ? System.getProperty("PAYPAL_CLIENT_ID") : 
      "<<PAYPAL-CLIENT-ID>>", 
      (System.getProperty("PAYPAL_CLIENT_SECRET") != null) ? System.getProperty("PAYPAL_CLIENT_SECRET") : 
      "<<PAYPAL-CLIENT-SECRET>>");
  
  PayPalHttpClient client = new PayPalHttpClient(this.environment);
  
  public PayPalHttpClient client() {
    return this.client;
  }
  
  public String prettyPrint(JSONObject jo, String pre) {
    Iterator<?> keys = jo.keys();
    StringBuilder pretty = new StringBuilder();
    while (keys.hasNext()) {
      String key = (String)keys.next();
      pretty.append(String.format("%s%s: ", pre, StringUtils.capitalize(key)));
      if (jo.get(key) instanceof JSONObject) {
        pretty.append(prettyPrint(jo.getJSONObject(key), pre + "\t"));
        continue;
      } 
      if (jo.get(key) instanceof org.json.JSONArray) {
        int sno = 1;
        for (Object jsonObject : (Iterable<Object>)jo.getJSONArray(key)) {
          pretty.append(String.format("\n%s\t%d:\n", pre, sno++));
          pretty.append(prettyPrint((JSONObject)jsonObject, pre + "\t\t"));
        } 
        continue;
      } 
      pretty.append(String.format("%s\n", jo.getString(key)));
    } 
    return pretty.toString();
  }
}