initial

mindforge.cronjob/internal/llm/openai.go

@@ -0,0 +1,88 @@
+package llm
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+func (s *llmService) SendOpenAIRequest(systemPrompt string, userPrompt string, model string) (string, error) {
+	apiKey := getEnvConfig("OPENAI_API_KEY")
+	if apiKey == "" {
+		return "", errors.New("OPENAI_API_KEY not found in .env or environment")
+	}
+
+	apiBase := "https://api.openai.com/v1"
+
+	url := fmt.Sprintf("%s/chat/completions", strings.TrimRight(apiBase, "/"))
+
+	reqBody := map[string]interface{}{
+		"model": model,
+		"messages": []map[string]string{
+			{"role": "system", "content": systemPrompt},
+			{"role": "user", "content": userPrompt},
+		},
+	}
+
+	jsonBody, err := json.Marshal(reqBody)
+	if err != nil {
+		return "", err
+	}
+
+	var lastErr error
+	// Retry up to 5 times (total 5 attempts)
+	for i := 0; i < 5; i++ {
+		req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonBody))
+		if err != nil {
+			return "", err
+		}
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+apiKey)
+
+		client := &http.Client{Timeout: 120 * time.Second}
+		resp, err := client.Do(req)
+
+		if err != nil {
+			lastErr = err
+			time.Sleep(time.Second * time.Duration(1<<i))
+			continue
+		}
+
+		bodyBytes, err := io.ReadAll(resp.Body)
+		resp.Body.Close()
+		if err != nil {
+			lastErr = err
+			time.Sleep(time.Second * time.Duration(1<<i))
+			continue
+		}
+
+		if resp.StatusCode != http.StatusOK {
+			lastErr = fmt.Errorf("OpenAI API error status %d: %s", resp.StatusCode, string(bodyBytes))
+			time.Sleep(time.Second * time.Duration(1<<i))
+			continue
+		}
+
+		var result struct {
+			Choices []struct {
+				Message struct {
+					Content string `json:"content"`
+				} `json:"message"`
+			} `json:"choices"`
+		}
+		if err := json.Unmarshal(bodyBytes, &result); err != nil {
+			return "", err
+		}
+
+		if len(result.Choices) > 0 {
+			return result.Choices[0].Message.Content, nil
+		}
+		return "", errors.New("empty response from OpenAI API")
+	}
+
+	return "", fmt.Errorf("failed to get OpenAI response after 5 attempts. Last error: %v", lastErr)
+}