fix!: Remove deprecated methods and constructors. Throw error if using local eval without server-side key

Flagsmith.Client.Test/Fixtures.cs

@@ -8,7 +8,7 @@ namespace Flagsmith.FlagsmithClientTest
 {
     internal class Fixtures
     {
-        public static string ApiKey => "test_key";
+        public static string ApiKey => "ser.test_key";
         public static string ApiUrl => "http://test_url/";
         public static AnalyticsProcessorTest GetAnalyticalProcessorTest() => new(new HttpClient(), ApiKey, ApiUrl);
         public static JObject JsonObject = JObject.Parse(@"{

Flagsmith.Client.Test/FlagsmithTest.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -648,6 +648,27 @@ public void TestCannotCreateFlagsmithClientInRemoteEvaluationWithoutAPIKey()
             Assert.Equal("ValueError: environmentKey is required", exception.Message);
         }
 
+        [Fact]
+        public void TestCannotCreateFlagsmithClientInLocalEvaluationWithoutServerAPIKey()
+        {
+            // When
+            Action createFlagsmith = () => new FlagsmithClient(
+                new FlagsmithConfiguration
+                {
+                    EnvironmentKey = "foobar",
+                    EnableLocalEvaluation = true
+                }
+            );
+
+            // Then
+            var exception = Assert.Throws<Exception>(() => createFlagsmith());
+            Assert.Equal
+            (
+                "ValueError: In order to use local evaluation, please generate a server key in the environment settings page.",
+                exception.Message
+            );
+        }
+
         [Fact]
         /// <summary>
         /// Test that analytics data is consistent with concurrent calls to get flags.
@@ -685,7 +706,7 @@ public async Task TestAnalyticsDataConsistencyWithConcurrentCallsToGetFlags()
                 featuresDictionary.TryAdd($"Feature_{i}", 0);
             }
 
-            // When 
+            // When
             var tasks = new Task[numberOfThreads];
 
             // Create numberOfThreads threads.
@@ -696,13 +717,13 @@ public async Task TestAnalyticsDataConsistencyWithConcurrentCallsToGetFlags()
                 // Prepare an array of feature names of length callsPerThread.
                 for (var j = 0; j < callsPerThread; j++)
                 {
-                    // The feature names are randomly selected from the featuresDictionary and added to the 
-                    // list of features, which represents the features that have been evaluated.  
+                    // The feature names are randomly selected from the featuresDictionary and added to the
+                    // list of features, which represents the features that have been evaluated.
                     string featureName = $"Feature_{new Random().Next(1, featuresDictionary.Count + 1)}";
                     features[j] = featureName;
 
                     // The relevant key in the featuresDictionary is incremented to simulate an evaluation
-                    // to track for that feature. 
+                    // to track for that feature.
                     featuresDictionary[featureName]++;
                 }
 

Flagsmith.FlagsmithClient/Flagsmith.FlagsmithClient.csproj

@@ -1,42 +1,42 @@
 <Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netstandard2.0</TargetFramework>
+        <LangVersion>8</LangVersion>
+        <DefaultItemExcludes>$(DefaultItemExcludes);example/**;</DefaultItemExcludes>
+        <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+        <PackageId>Flagsmith</PackageId>
+        <Title>Flagsmith</Title>
+        <Version>8.0.0</Version>
+        <Authors>flagsmith</Authors>
+        <Company>Flagsmith</Company>
+        <PackageDescription>Client SDK for Flagsmith. Ship features with confidence using feature flags and remote config. Host yourself or use our hosted version at https://flagsmith.com/</PackageDescription>
+        <Copyright>Copyright © 2023 Bullet Train Ltd</Copyright>
+        <PackageProjectUrl>https://flagsmith.com/</PackageProjectUrl>
+        <PackageIcon>icon.png</PackageIcon>
+        <PackageReleaseNotes>Singleton HTTP client</PackageReleaseNotes>
+        <PackageTags>feature flags remote config toggles</PackageTags>
+        <RepositoryUrl>https://github.com/Flagsmith/flagsmith-dotnet-client</RepositoryUrl>
+        <NeutralLanguage>en-GB</NeutralLanguage>
+        <PackageLicenseFile>LICENSE</PackageLicenseFile>
+    </PropertyGroup>
 
-  <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
-    <LangVersion>8</LangVersion>
-    <DefaultItemExcludes>$(DefaultItemExcludes);example/**;</DefaultItemExcludes>
-    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
-    <PackageId>Flagsmith</PackageId>
-    <Title>Flagsmith</Title>
-    <Version>7.1.1</Version>
-    <Authors>flagsmith</Authors>
-    <Company>Flagsmith</Company>
-    <PackageDescription>Client SDK for Flagsmith. Ship features with confidence using feature flags and remote config. Host yourself or use our hosted version at https://flagsmith.com/</PackageDescription>
-    <Copyright>Copyright © 2023 Bullet Train Ltd</Copyright>
-    <PackageProjectUrl>https://flagsmith.com/</PackageProjectUrl>
-    <PackageIcon>icon.png</PackageIcon>
-    <PackageReleaseNotes>Singleton HTTP client</PackageReleaseNotes>
-    <PackageTags>feature flags remote config toggles</PackageTags>
-    <RepositoryUrl>https://github.com/Flagsmith/flagsmith-dotnet-client</RepositoryUrl>
-    <NeutralLanguage>en-GB</NeutralLanguage>
-    <PackageLicenseFile>LICENSE</PackageLicenseFile>
-  </PropertyGroup>
+    <ItemGroup>
+        <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0"/>
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.1"/>
+        <PackageReference Include="Polly" Version="7.2.3"/>
+        <PackageReference Include="Teronis.MSBuild.Packaging.ProjectBuildInPackage" Version="1.0.0">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
 
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageReference Include="Polly" Version="7.2.3" />
-    <PackageReference Include="Teronis.MSBuild.Packaging.ProjectBuildInPackage" Version="1.0.0">
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-      <PrivateAssets>all</PrivateAssets>
-    </PackageReference>
+        <!-- currently we duplicate the semver dependency here from Engine project -->
+        <!-- TODO: build the Engine at build time and reference it using a PackageReference -->
+        <PackageReference Include="semver" Version="2.3.0"/>
 
-    <!-- currently we duplicate the semver dependency here from Engine project -->
-    <!-- TODO: build the Engine at build time and reference it using a PackageReference -->
-    <PackageReference Include="semver" Version="2.3.0" />
-
-    <ProjectReference Include="..\Flagsmith.Engine\Flagsmith.Engine.csproj" PrivateAssets="all" />
-    <None Include="LICENSE" Pack="true" PackagePath="" />
-    <None Include="icon.png" Pack="true" PackagePath="\" />
-  </ItemGroup>
+        <ProjectReference Include="..\Flagsmith.Engine\Flagsmith.Engine.csproj" PrivateAssets="all"/>
+        <None Include="LICENSE" Pack="true" PackagePath=""/>
+        <None Include="icon.png" Pack="true" PackagePath="\"/>
+    </ItemGroup>
 
 </Project>

Flagsmith.FlagsmithClient/FlagsmithClient.cs

@@ -75,8 +75,8 @@ private void Initialise()
                 {
                     if (!_config.EnvironmentKey!.StartsWith("ser."))
                     {
-                        Console.WriteLine(
-                            "In order to use local evaluation, please generate a server key in the environment settings page."
+                        throw new Exception(
+                            "ValueError: In order to use local evaluation, please generate a server key in the environment settings page."
                         );
                     }
 
@@ -99,85 +99,6 @@ public FlagsmithClient(FlagsmithConfiguration configuration)
             Initialise();
         }
 
-        /// <summary>
-        /// Create flagsmith client.
-        /// </summary>
-        /// <param name="environmentKey">The environment key obtained from Flagsmith interface. Required unless offlineMode is True</param>
-        /// <param name="apiUrl">Override the URL of the Flagsmith API to communicate with. Required unless offlineMode is True</param>
-        /// <param name="logger">Provide logger for logging polling info and errors which is only applicable when client side evalution is enabled and analytics errors.</param>
-        /// <param name="defaultFlagHandler">Callable which will be used in the case where flags cannot be retrieved from the API or a non existent feature is requested.</param>
-        /// <param name="enableAnalytics">if enabled, sends additional requests to the Flagsmith API to power flag analytics charts.</param>
-        /// <param name="enableClientSideEvaluation">If using local evaluation, specify the interval period between refreshes of local environment data.</param>
-        /// <param name="environmentRefreshIntervalSeconds"></param>
-        /// <param name="customHeaders">Additional headers to add to requests made to the Flagsmith API</param>
-        /// <param name="retries">Total http retries for every failing request before throwing the final error.</param>
-        /// <param name="requestTimeout">Number of seconds to wait for a request to complete before terminating the request</param>
-        /// <param name="httpClient">Http client used for flagsmith-API requests</param>
-        /// <param name="cacheConfig">Cache configuration. Example new CacheConfig(true) </param>
-        /// <param name="OfflineMode">Sets the client into offline mode. Relies on offlineHandler for evaluating flags.</param>
-        /// <param name="offlineHandler">Offline handler for evaluating flags. Required unless OfflineMode is False.</param>
-        /// <exception cref="FlagsmithAPIError">
-        /// Thrown when error occurs during any http request to Flagsmith api.Not applicable for polling or ananlytics.
-        /// </exception>
-        /// <exception cref="FlagsmithClientError">
-        /// A general exception with a error message. Example: Feature not found, etc.
-        /// </exception>
-        [Obsolete("Use FlagsmithClient(FlagsmithConfiguration) instead.")]
-        public FlagsmithClient(
-            string? environmentKey = null,
-            string apiUrl = "https://edge.api.flagsmith.com/api/v1/",
-            ILogger? logger = null,
-            Func<string, IFlag>? defaultFlagHandler = null,
-            bool enableAnalytics = false,
-            bool enableClientSideEvaluation = false,
-            int environmentRefreshIntervalSeconds = 60,
-            Dictionary<string, string>? customHeaders = null,
-            int retries = 1,
-            double? requestTimeout = null,
-            HttpClient? httpClient = null,
-            CacheConfig? cacheConfig = null,
-            bool offlineMode = false,
-            BaseOfflineHandler? offlineHandler = null
-        )
-        {
-            _config = new FlagsmithConfiguration
-            {
-                EnvironmentKey = environmentKey,
-                ApiUri = new Uri(apiUrl),
-                EnvironmentRefreshInterval = TimeSpan.FromSeconds(environmentRefreshIntervalSeconds),
-                EnableLocalEvaluation = enableClientSideEvaluation,
-                Logger = logger,
-                EnableAnalytics = enableAnalytics,
-                RequestTimeout = requestTimeout,
-                Retries = retries,
-                CustomHeaders = customHeaders,
-                CacheConfig = cacheConfig ?? new CacheConfig(false),
-                OfflineMode = offlineMode,
-                OfflineHandler = offlineHandler,
-                HttpClient = httpClient,
-            };
-            // The type of defaultFlagHandler in this constructor is `Func<string, IFlag>?`, but the type of
-            // IFlagsmithConfiguration.DefaultFlagHandler is `Func<string, Flag>`
-            if (defaultFlagHandler != null)
-            {
-                Flag Handler(string s) => (defaultFlagHandler(s) as Flag)!;
-                _config.DefaultFlagHandler = Handler;
-            }
-            Initialise();
-        }
-
-        /// <summary>
-        /// <para>Creates a Flagsmith client.</para>
-        /// <para>Deprecated since 7.1.0. Use <see cref="FlagsmithClient(FlagsmithConfiguration)"/> instead.</para>
-        /// </summary>
-        [Obsolete("This constructor is deprecated. Use FlagsmithClient(IFlagsmithConfiguration) instead.")]
-        public FlagsmithClient(IFlagsmithConfiguration configuration, HttpClient httpClient)
-        {
-            _config = (FlagsmithConfiguration)configuration;
-            _config.HttpClient = httpClient;
-            Initialise();
-        }
-
         /// <summary>
         /// Get all the default for flags for the current environment.
         /// </summary>

Flagsmith.FlagsmithClient/FlagsmithConfiguration.cs

@@ -11,17 +11,6 @@
         private static readonly Uri DefaultApiUri = new Uri("https://edge.api.flagsmith.com/api/v1/");
         private TimeSpan _timeout;
 
-        /// <summary>
-        /// <para>Override the URL of the Flagsmith API to communicate with.</para>
-        /// <para>Deprecated since 7.1.0. Use <see cref="ApiUri"/> instead.</para>
-        /// </summary>
-        [Obsolete("Use ApiUri instead.")]
-        public string ApiUrl
-        {
-            get => ApiUri.ToString();
-            set => ApiUri = value.EndsWith("/") ? new Uri(value) : new Uri($"{value}/");
-        }
-
         /// <summary>
         /// Versioned base Flagsmith API URI to use for all requests. Defaults to
         /// <c>https://edge.api.flagsmith.com/api/v1/</c>.
@@ -34,43 +23,26 @@
         /// </summary>
         public string EnvironmentKey { get; set; }
 
-        /// <summary>
-        /// Enables local evaluation of flags.
-        /// </summary>
-        [Obsolete("Use EnableLocalEvaluation instead.")]
-        public bool EnableClientSideEvaluation
-        {
-            get => EnableLocalEvaluation;
-            set => EnableLocalEvaluation = value;
-        }
-
         /// <summary>
         /// Enables local evaluation of flags.
         /// </summary>
         public bool EnableLocalEvaluation { get; set; }
 
-        /// <summary>
-        /// <para>If using local evaluation, specify the interval period between refreshes of local environment data.</para>
-        /// <para>Deprecated since 7.1.0. Use <see cref="EnvironmentRefreshInterval"/> instead.</para>
-        /// </summary>
-        [Obsolete("Use EnvironmentRefreshInterval instead.")]
-        public int EnvironmentRefreshIntervalSeconds
-        {
-            get => EnvironmentRefreshInterval.Seconds;
-            set => EnvironmentRefreshInterval = TimeSpan.FromSeconds(value);
-        }
         /// <summary>
         /// If using local evaluation, specify the interval period between refreshes of local environment data.
         /// </summary>
         public TimeSpan EnvironmentRefreshInterval { get; set; } = TimeSpan.FromSeconds(60);
+
         /// <summary>
         /// Callable which will be used in the case where flags cannot be retrieved from the API or a non existent feature is requested.
         /// </summary>
         public Func<string, Flag>? DefaultFlagHandler { get; set; }
+
         /// <summary>
         /// Provide logger for logging polling info & errors which is only applicable when client side evalution is enabled and analytics errors.
         /// </summary>
         public ILogger Logger { get; set; }
+
         /// <summary>
         /// if enabled, sends additional requests to the Flagsmith API to power flag analytics charts.
         /// </summary>
@@ -89,6 +61,7 @@
         /// Total http retries for every failing request before throwing the final error.
         /// </summary>
         public int? Retries { get; set; }
+
         /// <summary>
         /// Additional headers to add to requests made to the Flagsmith API
         /// </summary>
@@ -107,17 +80,11 @@
         /// <summary>
         /// Handler for offline mode operations.
         /// </summary>
         public BaseOfflineHandler? OfflineHandler { get; set; }
 
         /// <summary>
         /// Http client used for flagsmith-API requests.
         /// </summary>
         public HttpClient HttpClient { get; set; } = new HttpClient();
-
-        [Obsolete("This method will be removed in a future release.")]
-        public bool IsValid()
-        {
-            return !string.IsNullOrEmpty(ApiUri.ToString()) && !string.IsNullOrEmpty(EnvironmentKey);
-        }
     }
 }