/// <summary>
/// Creates a single discount in Shopify
/// </summary>
public static void CreateDiscount(AuthInfo authInfo, Discount discount)
{
try
{
Console.Write("Creating {0}: ", discount.Code);
string discountsUrl = String.Format(_discountsUrl, authInfo.StoreName,"");
HttpWebRequest request = HttpWebRequest.Create(discountsUrl) as HttpWebRequest;
// Set required HTTP headers
request.Accept = "*/*";
request.Headers["Accept-Language"] = "en-US";
request.Headers["Accept-Charset"] = "utf-8";
request.Headers["X-Requested-With"] = "XMLHttpRequest";
request.Headers["X-Prototype-Version"] = "1.7";
request.Headers["Cookie"] = String.Format("_secure_session_id={0}", authInfo.SessionId);
request.Headers["X-CSRF-Token"] = authInfo.CsrfToken;
// POST the create discount form
IDictionary<string, string> postData = new Dictionary<string, string>();
postData["authenticity_token"] = authInfo.CsrfToken;
postData["discount[code]"] = discount.Code;
postData["type"] = discount.Type;
postData["discount[value]"] = discount.Value;
postData["discount[applies_to_type]"] = discount.AppliesToType;
postData["discount[minimum_order_amount]"] = discount.MinimumOrderAmount;
postData["discount[applies_to_id]"] = discount.AppliesToId;
postData["discount[starts_at]"] = discount.StartsAt;
postData["discount[ends_at]"] = discount.EndsAt;
postData["discount[usage_limit]"] = discount.UsageLimit;
HttpWebResponse response = request.Post(postData);
// Read response in.
string responseText = response.GetResponseText();
// Check for application level errors
if (responseText.Contains("Messenger.error(\""))
{
string errorMessage = responseText.GetFirstDelimitedValue("Messenger.error(\"", "\");");
throw new Exception(errorMessage);
}
// Check for success
string successNotice = String.Format("Messenger.notice(\"Successfully created the discount {0}\\u0026hellip;\");", discount.Code);
if (!responseText.Contains(successNotice))
{
throw new Exception("Sanity check failed");
}
Console.WriteLine("OK");
}
catch (Exception ex)
{
Console.WriteLine("ERROR");
string errorMessage = String.Format("Error Creating Discount ({0})", ( discount == null ? "" : discount.Code) );
throw new Exception(errorMessage, ex);
}
}
/// <summary>
/// Helper method to parse the HTML screen scraped from the Shopify discounts page.
/// </summary>
private static Discount ParseDiscount(HtmlNode discountRow)
{
Discount discount = new Discount();
Console.Write("Parsing Discount: ");
try
{
string temp = null;
// Id
discount.Id = discountRow.Attributes["id"].Value.Replace("discount-", "");
// Code
discount.Code = discountRow.SelectSingleNode("td[position()=1]//strong").InnerHtml.Trim();
// MinimumOrderAmount
discount.MinimumOrderAmount = "0"; // Required
temp = discountRow.SelectSingleNode("td[position()=2]").InnerHtml.Trim();
if (temp.Contains("free shipping to"))
{
// Type
discount.Type = "shipping";
// Value
Match match = Regex.Match(temp, "\\$[0-9]+\\.[0-9]{2}");
if (match.Success)
{
discount.Value = match.Value.Replace("$", "");
}
temp = discountRow.SelectSingleNode("td[position()=2]//strong").InnerHtml.Trim();
switch (temp)
{
case "Anywhere":
// AppliesToId
discount.AppliesToId = String.Empty;
break;
case "Rest of World":
// AppliesToId
discount.AppliesToId = "2848952";
// AppliesToType
discount.AppliesToType = "Country";
break;
case "United States":
// AppliesToId
discount.AppliesToId = "2848942";
// AppliesToType
discount.AppliesToType = "Country";
break;
// TODO: Other countries here???
}
}
else
{
temp = discountRow.SelectSingleNode("td[position()=2]//strong").InnerHtml.Trim();
if (temp.Contains('$'))
{
// Type
discount.Type = "fixed_amount";
// Value
discount.Value = temp.Replace("$", "");
}
else if (temp.Contains('%'))
{
// Type
discount.Type = "percentage";
// Value
discount.Value = temp.Replace("%", "").Trim();
}
temp = discountRow.SelectSingleNode("td[position()=2]").OuterHtml.GetFirstDelimitedValue("</strong>", "</td>").ToLower();
if (temp.Contains("off of the collection"))
{
// AppliesToType
discount.AppliesToType = "Collection"; // Collection
}
else if (temp.Contains("off of"))
{
// AppliesToType
discount.AppliesToType = "Product"; // Product
}
else if (temp.Contains("off orders equal or above"))
{
// AppliesToType
discount.AppliesToType = "minimum_order_amount";
// MinimumOrderAmount
discount.MinimumOrderAmount = temp.Substring(temp.IndexOf('$') + 1).Trim();
}
if (discount.AppliesToType == "Product" || discount.AppliesToType == "Collection")
{
temp = discountRow.SelectSingleNode("td[position()=2]//a").Attributes["href"].Value;
// AppliesToId
discount.AppliesToId = temp.Substring(temp.LastIndexOf('/') + 1).Trim();
}
}
HtmlNodeCollection details = discountRow.SelectNodes("td[position()=3]//li");
if (details != null)
{
foreach (HtmlNode li in details)
{
if (Regex.IsMatch(li.InnerText, "Used [0-9]+ time[s]?"))
{
// UsageCount
discount.UsageCount = Regex.Match(li.InnerText, "[0-9]+").Value;
}
else if (Regex.IsMatch(li.InnerText, "[0-9]+ use[s]? remaining"))
{
// UsageLimit
temp = Regex.Match(li.InnerText, "[0-9]+").Value; // Uses Remaining
discount.UsageLimit = (Int32.Parse(discount.UsageCount) + Int32.Parse(temp)).ToString();
}
else if (Regex.IsMatch(li.InnerText, "Starts [A-Za-z0-9 ]+, ends [A-Za-z0-9 ]+"))
{
// StartsAt
discount.StartsAt = (DateTime.Parse(Regex.Matches(li.InnerText, "[A-Za-z]{3} [0-9]{2}( [0-9]{4})?")[0].Value)).ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
// EndsAt
discount.EndsAt = (DateTime.Parse(Regex.Matches(li.InnerText, "[A-Za-z]{3} [0-9]{2}( [0-9]{4})?")[1].Value)).ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
}
else if (li.InnerText.StartsWith("Starts"))
{
// StartAt
discount.StartsAt = (DateTime.Parse(Regex.Match(li.InnerText, "[A-Za-z]{3} [0-9]{2}( [0-9]{4})?").Value)).ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
}
else if (li.InnerText.StartsWith("Ends"))
{
// EndsAt
discount.EndsAt = (DateTime.Parse(Regex.Match(li.InnerText, "[A-Za-z]{3} [0-9]{2}( [0-9]{4})?").Value)).ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
}
}
}
// Enabled
discount.Enabled = discountRow.SelectSingleNode("td[position()=4]//a[position()=1]").InnerHtml.Equals("Disable discount").ToString();
Console.WriteLine("OK");
}
catch (Exception ex)
{
Console.WriteLine("ERROR");
string errorMessage = String.Format("Error Parsing Discount ({0})", (discount == null ? "" : discount.Code));
throw new Exception(errorMessage, ex);
}
return discount;
}
