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using System;
namespace IOL.VippsEcommerce.Models
{
/// <summary>
/// Configuration fields for the vipps api and integration.
/// </summary>
public class VippsConfiguration
{
/// <summary>
/// Url for the vipps api. This property is required.
/// <example>https://apitest.vipps.no</example>
/// <example>https://api.vipps.no</example>
/// <para>Corresponding environment variable name: VIPPS_API_URL</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_API_URL)]
public string ApiUrl { get; set; }
/// <summary>
/// Client ID for the merchant (the "username"). This property is required.
/// <para>Corresponding environment variable name: VIPPS_CLIENT_ID</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_CLIENT_ID)]
public string ClientId { get; set; }
/// <summary>
/// Client Secret for the merchant (the "password"). This property is required.
/// <para>Corresponding environment variable name: VIPPS_CLIENT_SECRET</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_CLIENT_SECRET)]
public string ClientSecret { get; set; }
/// <summary>
/// Primary subscription key for the API product.
/// <para>The primary subscription key take precedence over the secondary subscription key.</para>
/// <para>Either primary subscription key or secondary subscription key is required.</para>
/// <para>Corresponding environment variable name: VIPPS_SUBSCRIPTION_KEY_PRIMARY</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SUBSCRIPTION_KEY_PRIMARY)]
public string PrimarySubscriptionKey { get; set; }
/// <summary>
/// Secondary subscription key for the API product.
/// <para>The primary subscription key take precedence over the secondary subscription key.</para>
/// <para>Either primary subscription key or secondary subscription key is required.</para>
/// <para>Corresponding environment variable name: VIPPS_SUBSCRIPTION_KEY_SECONDARY</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SUBSCRIPTION_KEY_SECONDARY)]
public string SecondarySubscriptionKey { get; set; }
/// <summary>
/// The Merchant Serial Number (MSN) is a unique id for the sale unit that this payment is made for.
/// <para>Corresponding environment variable name: VIPPS_MSN</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_MSN)]
public string MerchantSerialNumber { get; set; }
/// <summary>
/// The name of the ecommerce solution. One word in lowercase letters is good.
/// <para>Corresponding environment variable name: VIPPS_SYSTEM_NAME</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SYSTEM_NAME)]
public string SystemName { get; set; }
/// <summary>
/// The version number of the ecommerce solution.
/// <para>Corresponding environment variable name: VIPPS_SYSTEM_VERSION</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SYSTEM_VERSION)]
public string SystemVersion { get; set; }
/// <summary>
/// The name of the ecommerce plugin (if applicable). One word in lowercase letters is good.
/// <para>Corresponding environment variable name: VIPPS_SYSTEM_PLUGIN_NAME</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SYSTEM_PLUGIN_NAME)]
public string SystemPluginName { get; set; }
/// <summary>
/// The version number of the ecommerce plugin (if applicable).
/// <para>Corresponding environment variable name: VIPPS_SYSTEM_PLUGIN_VERSION</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_SYSTEM_PLUGIN_VERSION)]
public string SystemPluginVersion { get; set; }
/// <summary>
/// Optional path to a writable directory wherein a credential cache file can be placed.
/// <para>Corresponding environment variable name: VIPPS_CACHE_PATH</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_CACHE_PATH)]
public string CacheDirectoryPath { get; set; }
/// <summary>
/// Optional key for AES encryption of the credential cache file.
/// <para>Corresponding environment variable name: VIPPS_CACHE_KEY</para>
/// </summary>
[VippsConfigurationKeyName(VippsConfigurationKeyNames.VIPPS_CACHE_KEY)]
public string CacheEncryptionKey { get; set; }
/// <summary>
/// Specify how to retrieve configuration and/or in what order. Defaults to VippsConfigurationMode.ENVIRONMENT_THEN_OBJECT.
/// </summary>
public VippsConfigurationMode ConfigurationMode { get; set; } = VippsConfigurationMode.ENVIRONMENT_THEN_OBJECT;
/// <summary>
/// Get value from configuration, either from Dependency injection or from the environment.
/// </summary>
/// <param name="key">Configuration key.</param>
/// <returns>A string containing the configuration value.</returns>
public string GetValue(string key) {
switch (ConfigurationMode) {
case VippsConfigurationMode.ONLY_OBJECT:
return GetValueFromObject(key);
case VippsConfigurationMode.ONLY_ENVIRONMENT:
return GetValueFromEnvironment(key);
case VippsConfigurationMode.OBJECT_THEN_ENVIRONMENT:
return GetValueFromObject(key) ?? GetValueFromEnvironment(key);
case VippsConfigurationMode.ENVIRONMENT_THEN_OBJECT:
return GetValueFromEnvironment(key) ?? GetValueFromObject(key);
default:
return default;
}
}
/// <summary>
/// Ensure that the configuration can be used to issue requests to the vipps api.
/// <exception cref="ArgumentNullException">Throws if a required value is null or whitespace.</exception>
/// </summary>
public void Verify() {
if (GetValue(VippsConfigurationKeyNames.VIPPS_API_URL).IsNullOrWhiteSpace()) {
throw new ArgumentNullException(nameof(ApiUrl),
"VippsEcommerceService: ApiUrl is not provided in configuration.");
}
if (GetValue(VippsConfigurationKeyNames.VIPPS_CLIENT_ID).IsNullOrWhiteSpace()) {
throw new ArgumentNullException(nameof(ClientId),
"VippsEcommerceService: ClientId is not provided in configuration.");
}
if (GetValue(VippsConfigurationKeyNames.VIPPS_CLIENT_SECRET).IsNullOrWhiteSpace()) {
throw new ArgumentNullException(nameof(ClientSecret),
"VippsEcommerceService: ClientSecret is not provided in configuration.");
}
if (GetValue(VippsConfigurationKeyNames.VIPPS_SUBSCRIPTION_KEY_PRIMARY).IsNullOrWhiteSpace()
&& GetValue(VippsConfigurationKeyNames.VIPPS_SUBSCRIPTION_KEY_SECONDARY).IsNullOrWhiteSpace()) {
throw new ArgumentNullException(nameof(PrimarySubscriptionKey)
+ nameof(SecondarySubscriptionKey),
"VippsEcommerceService: Neither PrimarySubscriptionKey nor SecondarySubscriptionKey was provided in configuration.");
}
}
private string GetValueFromEnvironment(string key) {
#if DEBUG
var value = Environment.GetEnvironmentVariable(key);
Console.WriteLine("Getting VippsConfiguration value for " + key + " from environment.");
Console.WriteLine("Key: " + key + " Value: " + value);
return value;
#else
return Environment.GetEnvironmentVariable(key);
#endif
}
private string GetValueFromObject(string key) {
foreach (var prop in typeof(VippsConfiguration).GetProperties()) {
foreach (var attribute in prop.CustomAttributes) {
foreach (var argument in attribute.ConstructorArguments) {
if (argument.Value as string == key) {
#if DEBUG
var value = prop.GetValue(this, null)?.ToString();
Console.WriteLine("Getting VippsConfiguration value for " + key + " from object.");
Console.WriteLine("Key: " + key + " Value: " + value);
return value;
#else
return prop.GetValue(this, null)?.ToString();
#endif
}
}
}
}
return default;
}
}
}
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