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Helpers/XPromptHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using xAiService.Models.Dtos;
+using xCommons.Extensions;
+
+namespace xAiService.Helpers
+{
+    public static class XPromptHelper
+    {
+        /// <summary>
+        /// Holds Initialized Prompts ...
+        /// </summary>
+        private static XPromptsDto prompts;
+
+        /// <summary>
+        /// Initialize Prompt Helper ...
+        /// </summary>
+        /// <param name="path"></param>
+        /// <exception cref="Exception"></exception>
+        /// <exception cref="InvalidDataException"></exception>
+        public static void Initialize(string path = "prompts.json")
+        {
+            //
+            // Create full Path and Check File Exists ...
+            var fullPath = Path.Combine(AppContext.BaseDirectory, path);
+            if (!File.Exists(fullPath))
+            {
+                throw new Exception($"Prompts Resources not found: {fullPath}");
+            }
+
+            //
+            // Read File as Json Text ...
+            var json = File.ReadAllText(fullPath);
+            var options = new JsonSerializerOptions
+            {
+                AllowTrailingCommas = true,
+                PropertyNameCaseInsensitive = true,
+                ReadCommentHandling = JsonCommentHandling.Skip,
+                Converters =
+                {
+                    new JsonStringEnumConverter(
+                        namingPolicy: null,
+                        allowIntegerValues: false
+                    )
+                }
+            };
+
+            //
+            // Serialized Root Object ...
+            var root = JsonSerializer.Deserialize<XPromptsDto>(json, options);
+            if (!root.IsNullOrDefault())
+            {
+                prompts = new XPromptsDto { Prompts = root.Prompts };
+            }
+        }
+
+        /// <summary>
+        /// Retrieve all Allowed Prompts as Enumerable ...
+        /// </summary>
+        /// <returns></returns>
+        public static IEnumerable<XPromptDto> GetPrompts()
+        {
+            return prompts!.Prompts.AsEnumerable();
+        }
+
+        /// <summary>
+        /// Get Specified Prompt ...
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        /// <exception cref="Exception"></exception>
+        public static XPromptDto GetPrompt(string name)
+        {
+            //
+            return GetPrompts()
+                .FirstOrDefault(p => p.Name == name);
+        }
+    }
+}