feat: Add Azure provider

src/Cellm/AddIn/CellmAddIn.cs

@@ -5,6 +5,7 @@
 using Cellm.Models.Behaviors;
 using Cellm.Models.Providers;
 using Cellm.Models.Providers.Anthropic;
+using Cellm.Models.Providers.Azure;
 using Cellm.Models.Providers.Cellm;
 using Cellm.Models.Providers.DeepSeek;
 using Cellm.Models.Providers.Google;
@@ -68,6 +69,7 @@ private static ServiceCollection ConfigureServices(ServiceCollection services)
         services
             .Configure<AccountConfiguration>(configuration.GetRequiredSection(nameof(AccountConfiguration)))
             .Configure<AnthropicConfiguration>(configuration.GetRequiredSection(nameof(AnthropicConfiguration)))
+            .Configure<AzureConfiguration>(configuration.GetRequiredSection(nameof(AzureConfiguration)))
             .Configure<CellmConfiguration>(configuration.GetRequiredSection(nameof(CellmConfiguration)))
             .Configure<GeminiConfiguration>(configuration.GetRequiredSection(nameof(GeminiConfiguration)))
             .Configure<DeepSeekConfiguration>(configuration.GetRequiredSection(nameof(DeepSeekConfiguration)))
@@ -133,6 +135,7 @@ private static ServiceCollection ConfigureServices(ServiceCollection services)
         services
             .AddSingleton<IChatClientFactory, ChatClientFactory>()
             .AddAnthropicChatClient()
+            .AddAzureChatClient()
             .AddCellmChatClient()
             .AddDeepSeekChatClient()
             .AddGeminiChatClient()

src/Cellm/AddIn/UserInterface/Ribbon/RibbonModelGroup.cs

@@ -10,6 +10,7 @@
 using Cellm.Models.Providers.OpenAiCompatible;
 using Cellm.Users;
 using ExcelDna.Integration.CustomUI;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -57,12 +58,13 @@ private class ProviderItem
     private readonly Dictionary<int, ProviderItem> _providerItems = new()
     {
         [0] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Anthropic)}", Image = $"{ResourcesBasePath}/anthropic.png", Label = nameof(Provider.Anthropic), Entitlement = Entitlement.EnableAnthropicProvider },
-        [1] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Gemini)}", Image = $"{ResourcesBasePath}/google.png", Label = nameof(Provider.Gemini), Entitlement = Entitlement.EnableGeminiProvider },
-        [2] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.DeepSeek)}", Image = $"{ResourcesBasePath}/deepseek.png", Label = nameof(Provider.DeepSeek), Entitlement = Entitlement.EnableDeepSeekProvider },
-        [3] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Mistral)}", Image = $"{ResourcesBasePath}/mistral.png", Label = nameof(Provider.Mistral), Entitlement = Entitlement.EnableMistralProvider },
-        [4] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Ollama)}", Image = $"{ResourcesBasePath}/ollama.png", Label = nameof(Provider.Ollama), Entitlement = Entitlement.EnableOllamaProvider },
-        [5] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.OpenAi)}", Image = $"{ResourcesBasePath}/openai.png", Label = nameof(Provider.OpenAi), Entitlement = Entitlement.EnableOpenAiProvider },
-        [6] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.OpenAiCompatible)}", Image = $"{ResourcesBasePath}/openai.png", Label = nameof(Provider.OpenAiCompatible) }
+        [1] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Azure)}", Image = $"{ResourcesBasePath}/azure.png", Label = nameof(Provider.Azure), Entitlement = Entitlement.EnableAzureProvider },
+        [2] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Gemini)}", Image = $"{ResourcesBasePath}/google.png", Label = nameof(Provider.Gemini), Entitlement = Entitlement.EnableGeminiProvider },
+        [3] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.DeepSeek)}", Image = $"{ResourcesBasePath}/deepseek.png", Label = nameof(Provider.DeepSeek), Entitlement = Entitlement.EnableDeepSeekProvider },
+        [4] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Mistral)}", Image = $"{ResourcesBasePath}/mistral.png", Label = nameof(Provider.Mistral), Entitlement = Entitlement.EnableMistralProvider },
+        [5] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.Ollama)}", Image = $"{ResourcesBasePath}/ollama.png", Label = nameof(Provider.Ollama), Entitlement = Entitlement.EnableOllamaProvider },
+        [6] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.OpenAi)}", Image = $"{ResourcesBasePath}/openai.png", Label = nameof(Provider.OpenAi), Entitlement = Entitlement.EnableOpenAiProvider },
+        [7] = new ProviderItem { Id = $"{nameof(Provider)}.{nameof(Provider.OpenAiCompatible)}", Image = $"{ResourcesBasePath}/openai.png", Label = nameof(Provider.OpenAiCompatible) }
     };
 
     internal int _selectedProviderIndex = 3; // Default to Ollama
@@ -276,7 +278,7 @@ public string GetSelectedProviderLabel(IRibbonControl control)
         }
         catch (KeyNotFoundException)
         {
-            currentModel = string.Empty; // Explicitly null
+            currentModel = string.Empty;
         }
         catch (Exception ex)
         {
@@ -416,67 +418,17 @@ private List<string> GetAvailableModelNamesForProvider(Provider provider)
         if (!string.IsNullOrEmpty(big) && !big.StartsWith("No ")) modelNames.Add(big);
         if (!string.IsNullOrEmpty(thinking) && !thinking.StartsWith("No ")) modelNames.Add(thinking);
 
-        // Remove duplicates if Small/Big/Thinking are configured to the same model
+        // Remove duplicates
         return modelNames.Distinct().ToList();
     }
 
     private string GetModelNameForProvider(Provider provider, string modelType)
     {
         try
         {
-            return provider switch
-            {
-                Provider.Cellm => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<CellmConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<CellmConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<CellmConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.Anthropic => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<AnthropicConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<AnthropicConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<AnthropicConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.DeepSeek => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<DeepSeekConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<DeepSeekConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<DeepSeekConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.Mistral => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<MistralConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<MistralConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<MistralConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.Ollama => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<OllamaConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<OllamaConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<OllamaConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.OpenAi => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<OpenAiConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<OpenAiConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<OpenAiConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                Provider.OpenAiCompatible => modelType switch
-                {
-                    "SmallModel" => GetProviderConfiguration<OpenAiCompatibleConfiguration>()?.SmallModel ?? "No small model",
-                    "MediumModel" => GetProviderConfiguration<OpenAiCompatibleConfiguration>()?.MediumModel ?? "No big model",
-                    "LargeModel" => GetProviderConfiguration<OpenAiCompatibleConfiguration>()?.LargeModel ?? "No thinking model",
-                    _ => "N/A"
-                },
-                _ => "N/A" // Default case for unhandled providers
-            };
+            var configuration = CellmAddIn.Services.GetRequiredService<IConfiguration>();
+            var key = $"{provider}Configuration:{modelType}";
+            return configuration[key] ?? string.Empty;
         }
         catch (Exception ex)
         {
@@ -709,7 +661,7 @@ static internal bool IsBaseAddressEditable(Provider provider)
     {
         return provider switch
         {
-            Provider.Ollama or Provider.OpenAiCompatible => true,
+            Provider.Azure or Provider.Gemini or Provider.Ollama or Provider.OpenAiCompatible => true,
             _ => false
         };
     }

src/Cellm/Cellm.csproj

@@ -15,6 +15,7 @@
 
   <ItemGroup>
     <None Remove="AddIn\UserInterface\Resources\anthropic.png" />
+    <None Remove="AddIn\UserInterface\Resources\azure.png" />
     <None Remove="AddIn\UserInterface\Resources\deepseek.png" />
     <None Remove="AddIn\UserInterface\Resources\external-link.svg" />
     <None Remove="AddIn\UserInterface\Resources\google.png" />
@@ -37,6 +38,7 @@
     <PackageReference Include="MediatR" Version="12.5.0" />
     <PackageReference Include="Microsoft.Extensions.AI" Version="9.5.0" />
     <PackageReference Include="Microsoft.Extensions.AI.Abstractions" Version="9.5.0" />
+    <PackageReference Include="Microsoft.Extensions.AI.AzureAIInference" Version="9.5.0-preview.1.25265.7" />
     <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.4.4-preview.1.25259.16" />
     <PackageReference Include="Microsoft.Extensions.Caching.Hybrid" Version="9.5.0" />
     <PackageReference Include="Microsoft.Extensions.Compliance.Redaction" Version="9.5.0" />
@@ -70,6 +72,7 @@
 
   <ItemGroup>
     <EmbeddedResource Include="AddIn\UserInterface\Resources\anthropic.png" />
+    <EmbeddedResource Include="AddIn\UserInterface\Resources\azure.png" />
     <EmbeddedResource Include="AddIn\UserInterface\Resources\deepseek.png" />
     <EmbeddedResource Include="AddIn\UserInterface\Resources\external-link.svg" />
     <EmbeddedResource Include="AddIn\UserInterface\Resources\google.png" />

src/Cellm/Models/Providers/Azure/AzureConfiguration.cs

@@ -0,0 +1,10 @@
+namespace Cellm.Models.Providers.Azure;
+
+internal class AzureConfiguration
+{
+    public Uri BaseAddress { get; set; } = default!;
+
+    public string DefaultModel { get; init; } = string.Empty;
+
+    public string ApiKey { get; init; } = string.Empty;
+}

src/Cellm/Models/Providers/Provider.cs

@@ -3,6 +3,7 @@
 public enum Provider
 {
     Anthropic,
+    Azure,
     Cellm,
     DeepSeek,
     Gemini,

src/Cellm/Models/ServiceCollectionExtensions.cs

@@ -27,9 +27,12 @@
 using System.Net.Http.Headers;
 using System.Threading.RateLimiting;
 using Anthropic.SDK;
+using Azure;
+using Azure.AI.Inference;
 using Cellm.Models.Prompts;
 using Cellm.Models.Providers;
 using Cellm.Models.Providers.Anthropic;
+using Cellm.Models.Providers.Azure;
 using Cellm.Models.Providers.Cellm;
 using Cellm.Models.Providers.DeepSeek;
 using Cellm.Models.Providers.Google;
@@ -145,7 +148,7 @@ public static IServiceCollection AddAnthropicChatClient(this IServiceCollection
             .AddKeyedChatClient(Provider.Anthropic, serviceProvider =>
             {
                 var account = serviceProvider.GetRequiredService<Account>();
-                account.ThrowIfNotEntitled(Entitlement.EnableAnthropicProvider);
+                account.ThrowIfNotEntitled(Entitlement.EnableAzureProvider);
 
                 var anthropicConfiguration = serviceProvider.GetRequiredService<IOptionsMonitor<AnthropicConfiguration>>();
                 var resilientHttpClient = serviceProvider.GetKeyedService<HttpClient>("ResilientHttpClient") ?? throw new NullReferenceException("ResilientHttpClient");
@@ -160,6 +163,27 @@ public static IServiceCollection AddAnthropicChatClient(this IServiceCollection
         return services;
     }
 
+    public static IServiceCollection AddAzureChatClient(this IServiceCollection services)
+    {
+        services
+            .AddKeyedChatClient(Provider.Azure, serviceProvider =>
+            {
+                var account = serviceProvider.GetRequiredService<Account>();
+                account.ThrowIfNotEntitled(Entitlement.EnableAzureProvider);
+
+                var azureConfiguration = serviceProvider.GetRequiredService<IOptionsMonitor<AzureConfiguration>>();
+                var resilientHttpClient = serviceProvider.GetKeyedService<HttpClient>("ResilientHttpClient") ?? throw new NullReferenceException("ResilientHttpClient");
+
+                return new ChatCompletionsClient(
+                    azureConfiguration.CurrentValue.BaseAddress,
+                    new AzureKeyCredential(azureConfiguration.CurrentValue.ApiKey))
+                    .AsIChatClient(azureConfiguration.CurrentValue.DefaultModel);
+            }, ServiceLifetime.Transient)
+            .UseFunctionInvocation();
+
+        return services;
+    }
+
     public static IServiceCollection AddCellmChatClient(this IServiceCollection services)
     {
         services

src/Cellm/Users/Entitlement.cs

@@ -3,6 +3,7 @@
 public enum Entitlement
 {
     EnableAnthropicProvider,
+    EnableAzureProvider,
     EnableCellmProvider,
     EnableDeepSeekProvider,
     EnableGeminiProvider,
@@ -11,6 +12,6 @@ public enum Entitlement
     EnableOpenAiProvider,
     EnableOpenAiCompatibleProvider,
     EnableModelContextProtocol,
-    DisableTelemetry,
+    DisableTelemetry
 }
 

src/Cellm/Users/Exceptions/PermissionDeniedException.cs

@@ -15,6 +15,7 @@ private static string GetMessage(Entitlement entitlement)
         return entitlement switch
         {
             Entitlement.EnableAnthropicProvider => $"You do not have permission to use models hosted by Anthropic.",
+            Entitlement.EnableAzureProvider => $"You do not have permission to use models hosted by Azure.",
             Entitlement.EnableCellmProvider => $"You do not have permission to use models hosted by Cellm.",
             Entitlement.EnableDeepSeekProvider => $"You do not have permission to use models hosted by DeepSeek.",
             Entitlement.EnableMistralProvider => $"You do not have permission to use models hosted by Mistral.",

src/Cellm/appsettings.json

@@ -11,6 +11,10 @@
         "MediumModel": "claude-3-7-sonnet-latest",
         "LargeModel": "claude-3-opus-latest"
     },
+    "AzureConfiguration": {
+        "DefaultModel": "",
+        "ApiKey": ""
+    },
     "CellmAddInConfiguration": {
         "DefaultProvider": "Ollama",
         "DefaultModel": "gemma3:4b-it-qat",

src/Cellm/packages.lock.json

@@ -58,6 +58,18 @@
         "resolved": "9.5.0",
         "contentHash": "Y46j1S4zOPtLAHCUzhHIm1IhCMr7764754bLYupyc1JZcvLNXjUk+VC7H3Bou20S2hHgDJnfox7X/H/3BYEvzA=="
       },
+      "Microsoft.Extensions.AI.AzureAIInference": {
+        "type": "Direct",
+        "requested": "[9.5.0-preview.1.25265.7, )",
+        "resolved": "9.5.0-preview.1.25265.7",
+        "contentHash": "RSC/jDyRotlCdqokJlyIv617jxP9TNUMeD87W5RP8vaYdwr0ZE0cd2wkCs/1QQ6J93vOuNcBkyCxPxWI2na28g==",
+        "dependencies": {
+          "Azure.AI.Inference": "1.0.0-beta.4",
+          "Microsoft.Extensions.AI.Abstractions": "9.5.0",
+          "System.Memory.Data": "9.0.5",
+          "System.Text.Json": "9.0.5"
+        }
+      },
       "Microsoft.Extensions.AI.OpenAI": {
         "type": "Direct",
         "requested": "[9.4.4-preview.1.25259.16, )",
@@ -298,6 +310,30 @@
         "resolved": "9.0.5",
         "contentHash": "WobqAA+zMpzxJ6EkSNkHrjltyx+s+yTM+BoBJt74aqjBDyrsLE+buHvFyp49sjAyzRZ/ywJ25T4LMDX5b+zL3Q=="
       },
+      "Azure.AI.Inference": {
+        "type": "Transitive",
+        "resolved": "1.0.0-beta.4",
+        "contentHash": "HNiPXhBoCDLTq1IX9wrqXKYwy8ON+U0nSHkba7qxFRXjMKCqA9WiQIHbnoO5i6Oet2/qbDkRDWjjnmQQJKdqsw==",
+        "dependencies": {
+          "Azure.Core": "1.44.1",
+          "System.ClientModel": "1.4.0-beta.1"
+        }
+      },
+      "Azure.Core": {
+        "type": "Transitive",
+        "resolved": "1.44.1",
+        "contentHash": "YyznXLQZCregzHvioip07/BkzjuWNXogJEVz9T5W6TwjNr17ax41YGzYMptlo2G10oLCuVPoyva62y0SIRDixg==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "6.0.0",
+          "System.ClientModel": "1.1.0",
+          "System.Diagnostics.DiagnosticSource": "6.0.1",
+          "System.Memory.Data": "6.0.0",
+          "System.Numerics.Vectors": "4.5.0",
+          "System.Text.Encodings.Web": "6.0.0",
+          "System.Text.Json": "6.0.10",
+          "System.Threading.Tasks.Extensions": "4.5.4"
+        }
+      },
       "ExcelDna.Integration": {
         "type": "Transitive",
         "resolved": "1.9.0-beta2",
@@ -589,11 +625,11 @@
       },
       "System.ClientModel": {
         "type": "Transitive",
-        "resolved": "1.2.1",
-        "contentHash": "s9+M5El+DXdCRRLzxak8uGBKWT8H/eIssGpFtpaMKdJULrQbBDPH/zFbVyHX+NDczhS5EvjHFbBH9/L+0UhmcA==",
+        "resolved": "1.4.0-beta.1",
+        "contentHash": "ZR0fKC94VS4P80vmxjk7l13/jPBXV0GMoE4jQfkYk8m2YV+dlw8jSC+b6eAfyBz0u+soN4CjhT3OdOC5KHaXxg==",
         "dependencies": {
-          "System.Memory.Data": "6.0.0",
-          "System.Text.Json": "6.0.10"
+          "Microsoft.Extensions.Logging.Abstractions": "6.0.0",
+          "System.Memory.Data": "6.0.1"
         }
       },
       "System.Diagnostics.DiagnosticSource": {
@@ -616,14 +652,32 @@
       },
       "System.Memory.Data": {
         "type": "Transitive",
-        "resolved": "9.0.4",
-        "contentHash": "m9v4fYRP2cvatcM/WJUpqyfmQc9c1aFhDrOcJs7+nmuAG96kk9jXipDTBsS6fUYdDcy2lR4Q4QNDanSefHaUrA=="
+        "resolved": "9.0.5",
+        "contentHash": "qK9dBegf3wdw2+mqeIXmTJjlMq4sn39wUN+JSagMuCmp/05ZyQLYIZsxlCopChxcgRwqu/+tHXKRaKtzHYlITw=="
       },
       "System.Net.ServerSentEvents": {
         "type": "Transitive",
         "resolved": "10.0.0-preview.2.25163.2",
         "contentHash": "XHyvtQSgco0Sv0kz9yNBv93k3QOoAVzIVd5XbQoTqjV9sqkzWHsToNknyxtNjcXQwb+O9TfzSlNobsBWwnKD3Q=="
       },
+      "System.Numerics.Vectors": {
+        "type": "Transitive",
+        "resolved": "4.5.0",
+        "contentHash": "QQTlPTl06J/iiDbJCiepZ4H//BVraReU4O4EoRw1U02H5TLUIT7xn3GnDp9AXPSlJUDyFs4uWjWafNX6WrAojQ=="
+      },
+      "System.Runtime.CompilerServices.Unsafe": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "/iUeP3tq1S0XdNNoMz5C9twLSrM/TH+qElHkXWaPvuNOt+99G75NrV0OS2EqHx5wMN7popYjpc8oTjC1y16DLg=="
+      },
+      "System.Text.Encodings.Web": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "Vg8eB5Tawm1IFqj4TVK1czJX89rhFxJo9ELqc/Eiq0eXy13RK00eubyU6TJE6y+GQXjyV5gSfiewDUZjQgSE0w==",
+        "dependencies": {
+          "System.Runtime.CompilerServices.Unsafe": "6.0.0"
+        }
+      },
       "System.Text.Json": {
         "type": "Transitive",
         "resolved": "9.0.5",
@@ -638,6 +692,11 @@
         "type": "Transitive",
         "resolved": "8.0.0",
         "contentHash": "7mu9v0QDv66ar3DpGSZHg9NuNcxDaaAcnMULuZlaTpP9+hwXhrxNGsF5GmLkSHxFdb5bBc1TzeujsRgTrPWi+Q=="
+      },
+      "System.Threading.Tasks.Extensions": {
+        "type": "Transitive",
+        "resolved": "4.5.4",
+        "contentHash": "zteT+G8xuGu6mS+mzDzYXbzS7rd3K6Fjb9RiZlYlJPam2/hU7JCBZBVEcywNuR+oZ1ncTvc/cq0faRr3P01OVg=="
       }
     }
   }