create transactions from AI receipt image recognition results

pkg/llm/openai_large_language_model_provider.go

@@ -0,0 +1,43 @@
+package llm
+
+import (
+	"net/http"
+
+	"github.com/mayswind/ezbookkeeping/pkg/core"
+	"github.com/mayswind/ezbookkeeping/pkg/settings"
+)
+
+// OpenAILargeLanguageModelProvider defines the structure of OpenAI large language model provider
+type OpenAILargeLanguageModelProvider struct {
+	OpenAIChatCompletionsLargeLanguageModelProvider
+	OpenAIAPIKey                   string
+	ReceiptImageRecognitionModelID string
+}
+
+const openAIChatCompletionsUrl = "https://api.openai.com/v1/chat/completions"
+
+// BuildChatCompletionsHttpRequest returns the chat completions http request by OpenAI provider
+func (p *OpenAILargeLanguageModelProvider) BuildChatCompletionsHttpRequest(c core.Context, uid int64) (*http.Request, error) {
+	req, err := http.NewRequest("POST", openAIChatCompletionsUrl, nil)
+
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Authorization", "Bearer "+p.OpenAIAPIKey)
+
+	return req, nil
+}
+
+// GetReceiptImageRecognitionModelID returns the receipt image recognition model id of OpenAI provider
+func (p *OpenAILargeLanguageModelProvider) GetReceiptImageRecognitionModelID() string {
+	return p.ReceiptImageRecognitionModelID
+}
+
+// NewOpenAILargeLanguageModelProvider creates a new OpenAI large language model provider instance
+func NewOpenAILargeLanguageModelProvider(config *settings.Config) LargeLanguageModelProvider {
+	return newOpenAICommonChatCompletionsHttpLargeLanguageModelProvider(&OpenAILargeLanguageModelProvider{
+		OpenAIAPIKey:                   config.OpenAIAPIKey,
+		ReceiptImageRecognitionModelID: config.OpenAIReceiptImageRecognitionModelID,
+	})
+}