public async Task <bool> CreateCouponAsync(string bookId, CouponForCreation coupon)
{
if (string.IsNullOrWhiteSpace(_couponTemplateJson))
{
throw new Exception($"Coupon JSON template file not loaded: {CouponJsonTemplateFileName}");
}
var url = $"https://leanpub.com/{bookId}/coupons.json?api_key={_apiKey}";
var jsonString = _couponTemplateJson
.Replace("{{coupon_code}}", coupon.coupon_code)
.Replace("{{discounted_price}}", $"{coupon.discounted_price:0.0}")
.Replace("{{start_date}}", $"{coupon.start_date:yyyy-MM-dd}")
.Replace("{{end_date}}", $"{coupon.end_date:yyyy-MM-dd}")
.Replace("{{max_uses}}", $"{coupon.max_uses}");
var jsonContent = new StringContent(jsonString, Encoding.UTF8, "application/json");
var response = await _httpClient.PostAsync(url, jsonContent);
if (response.StatusCode == HttpStatusCode.OK || response.StatusCode == HttpStatusCode.Created)
{
return(true);
}
var msg = await response.Content.ReadAsStringAsync();
throw new Exception($"Failed: {msg}");
}
public static async Task CreateCoupon(string bookId)
{
var coupon = new CouponForCreation
{
coupon_code = "test1234",
start_date = DateTime.Now.Date,
end_date = DateTime.Now.AddYears(1).Date,
max_uses = 1,
discounted_price = 0.0,
suspended = false,
note = string.Empty
};
if (await apiClient.CreateCouponAsync(bookId, coupon))
{
Console.WriteLine($"Coupon created: {coupon.coupon_code}");
}
}
public static async Task BatchCreateCoupons(string bookId, string couponPrefix, int startNumber, int count)
{
const string Characters = "23456789abcdefghjkmnpqrstuvwxyz";
var r = new Random((int)DateTime.Now.Ticks);
for (int i = 0; i < count; i++)
{
int number = startNumber + i;
var coupon = new CouponForCreation
{
coupon_code = $"{couponPrefix}{number:00}-{GetRandomCode()}",
start_date = DateTime.Now.Date.AddDays(-1), // 確保立刻生效
end_date = DateTime.Now.AddYears(1).Date, // 一年內有效
max_uses = 1, // 只能使用一次
discounted_price = 0.0, // 零元結帳
suspended = false, // 立刻生效
note = string.Empty
};
if (await apiClient.CreateCouponAsync(bookId, coupon))
{
Console.WriteLine($"Coupon created: {coupon.coupon_code}");
}
}
string GetRandomCode()
{
var sb = new StringBuilder();
for (int i = 0; i < 4; i++)
{
int index = r.Next(0, Characters.Length - 1);
sb.Append(Characters[index]);
}
return(sb.ToString());
}
}
