first commit

2026-09-28 11:44:26 +05:30
parent 721743ae6b
commit bffc9b1686
424 changed files with 46474 additions and 0 deletions
@@ -0,0 +1,68 @@
+using System.Text.Json;
+
+namespace Fitness_core_BE.AI
+{
+    public class GeminiClient : IAiClient
+    {
+        private readonly HttpClient _http;
+        private readonly IConfiguration _config;
+
+        public GeminiClient(HttpClient http, IConfiguration configuration)
+        {
+            _http = http;
+            _config = configuration;
+        }
+
+        public async Task<string> GenerateJsonAsync( string systemPrompt, object payload)
+        {
+            string apiKey = _config["Gemini:ApiKey"];
+
+            if (string.IsNullOrEmpty(apiKey))
+                throw new Exception("Gemini API key is not configured.");
+
+            var requestBody = new
+            {
+                contents = new[]
+                {
+            new
+            {
+                parts = new[]
+                {
+                    new { text = systemPrompt },
+                    new { text = JsonSerializer.Serialize(payload) }
+                }
+            }
+        },
+                generationConfig = new
+                {
+                    temperature = 0.4,
+                    maxOutputTokens = 10000
+                }
+            };
+
+            var response = await _http.PostAsJsonAsync(
+                $"https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent?key={apiKey}",
+                requestBody
+            );
+
+            if (!response.IsSuccessStatusCode)
+            {
+                var error = await response.Content.ReadAsStringAsync();
+                throw new Exception($"Gemini API Error: {error}");
+            }
+
+            var jsonString = await response.Content.ReadAsStringAsync();
+
+            using var doc = JsonDocument.Parse(jsonString);
+
+            var text = doc.RootElement
+                .GetProperty("candidates")[0]
+                .GetProperty("content")
+                .GetProperty("parts")[0]
+                .GetProperty("text")
+                .GetString();
+
+            return text ?? throw new Exception("No response text from Gemini.");
+        }
+    }
+}