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src.bak/main/java/com/example/service/base/GeminiClientService.java

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+/*
+ * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose. 
+ * Your use of it is subject to your agreement with Google.
+ */
+
+package com.example.service.base;
+
+import com.example.exception.GeminiClientException;
+import com.google.genai.Client;
+import com.google.genai.errors.GenAiIOException;
+import com.google.genai.types.Content;
+import com.google.genai.types.GenerateContentConfig;
+import com.google.genai.types.GenerateContentResponse;
+import com.google.genai.types.Part;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+/**
+ * Service for interacting with the Gemini API to generate content.
+ * It encapsulates the low-level API calls, handling prompt configuration,
+ * and error management to provide a clean and robust content generation interface.
+ */
+@Service
+public class GeminiClientService {
+
+    private static final Logger logger = LoggerFactory.getLogger(GeminiClientService.class);
+    private final Client geminiClient;
+
+    public GeminiClientService(Client geminiClient) {
+        this.geminiClient = geminiClient;
+    }
+
+    public String generateContent(String prompt, Float temperature, Integer maxOutputTokens, String modelName,Float topP) throws GeminiClientException {
+        try {
+            Content content = Content.fromParts(Part.fromText(prompt));
+            GenerateContentConfig config = GenerateContentConfig.builder()
+                    .temperature(temperature)
+                    .maxOutputTokens(maxOutputTokens)
+                    .topP(topP)
+                    .build();
+            
+            logger.debug("Sending request to Gemini model '{}'", modelName);
+            GenerateContentResponse response = geminiClient.models.generateContent(modelName, content, config);
+
+            if (response != null && response.text() != null) {
+                return response.text();
+            } else {
+                logger.warn("Gemini returned no content or an unexpected response structure for model '{}'.", modelName);
+                throw new GeminiClientException("No content generated or unexpected response structure.");
+            }
+        } catch (GenAiIOException e) {
+            logger.error("Gemini API I/O error while calling model '{}': {}", modelName, e.getMessage(), e);
+            throw new GeminiClientException("An API communication issue occurred: " + e.getMessage(), e);
+        } catch (Exception e) {
+            logger.error("An unexpected error occurred during Gemini content generation for model '{}': {}", modelName, e.getMessage(), e);
+            throw new GeminiClientException("An unexpected issue occurred during content generation.", e);
+        }
+    }
+}