initial

mindforge.cronjob/internal/llm/gemini.go

@@ -0,0 +1,86 @@
+package llm
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+func (s *llmService) SendGeminiRequest(systemPrompt string, userPrompt string, model string) (string, error) {
+	apiKey := getEnvConfig("GEMINI_API_KEY")
+	if apiKey == "" {
+		return "", errors.New("GEMINI_API_KEY not found in .env or environment")
+	}
+
+	apiBase := "https://generativelanguage.googleapis.com/v1beta"
+
+	url := fmt.Sprintf("%s/models/%s:generateContent?key=%s", strings.TrimRight(apiBase, "/"), model, apiKey)
+
+	reqBody := map[string]interface{}{}
+	if systemPrompt != "" {
+		reqBody["system_instruction"] = map[string]interface{}{
+			"parts": []map[string]string{
+				{"text": systemPrompt},
+			},
+		}
+	}
+	reqBody["contents"] = []map[string]interface{}{
+		{
+			"role": "user",
+			"parts": []map[string]string{
+				{"text": userPrompt},
+			},
+		},
+	}
+
+	jsonBody, err := json.Marshal(reqBody)
+	if err != nil {
+		return "", err
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonBody))
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{Timeout: 120 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	bodyBytes, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("Gemini API error status %d: %s", resp.StatusCode, string(bodyBytes))
+	}
+
+	var result struct {
+		Candidates []struct {
+			Content struct {
+				Parts []struct {
+					Text string `json:"text"`
+				} `json:"parts"`
+			} `json:"content"`
+		} `json:"candidates"`
+	}
+	if err := json.Unmarshal(bodyBytes, &result); err != nil {
+		return "", err
+	}
+
+	if len(result.Candidates) > 0 && len(result.Candidates[0].Content.Parts) > 0 {
+		return result.Candidates[0].Content.Parts[0].Text, nil
+	}
+
+	return "", errors.New("empty response from Gemini API")
+}