refactor: refactor claude related code

controller/relay-claude.go

@@ -1,5 +1,11 @@
 package controller
 
+import (
+	"fmt"
+	"one-api/common"
+	"strings"
+)
+
 type ClaudeMetadata struct {
 	UserId string `json:"user_id"`
 }
@@ -38,3 +44,61 @@ func stopReasonClaude2OpenAI(reason string) string {
 		return reason
 	}
 }
+
+func requestOpenAI2Claude(textRequest GeneralOpenAIRequest) *ClaudeRequest {
+	claudeRequest := ClaudeRequest{
+		Model:             textRequest.Model,
+		Prompt:            "",
+		MaxTokensToSample: textRequest.MaxTokens,
+		StopSequences:     nil,
+		Temperature:       textRequest.Temperature,
+		TopP:              textRequest.TopP,
+		Stream:            textRequest.Stream,
+	}
+	if claudeRequest.MaxTokensToSample == 0 {
+		claudeRequest.MaxTokensToSample = 1000000
+	}
+	prompt := ""
+	for _, message := range textRequest.Messages {
+		if message.Role == "user" {
+			prompt += fmt.Sprintf("\n\nHuman: %s", message.Content)
+		} else if message.Role == "assistant" {
+			prompt += fmt.Sprintf("\n\nAssistant: %s", message.Content)
+		} else {
+			// ignore other roles
+		}
+		prompt += "\n\nAssistant:"
+	}
+	claudeRequest.Prompt = prompt
+	return &claudeRequest
+}
+
+func streamResponseClaude2OpenAI(claudeResponse *ClaudeResponse) *ChatCompletionsStreamResponse {
+	var choice ChatCompletionsStreamResponseChoice
+	choice.Delta.Content = claudeResponse.Completion
+	choice.FinishReason = stopReasonClaude2OpenAI(claudeResponse.StopReason)
+	var response ChatCompletionsStreamResponse
+	response.Object = "chat.completion.chunk"
+	response.Model = claudeResponse.Model
+	response.Choices = []ChatCompletionsStreamResponseChoice{choice}
+	return &response
+}
+
+func responseClaude2OpenAI(claudeResponse *ClaudeResponse) *OpenAITextResponse {
+	choice := OpenAITextResponseChoice{
+		Index: 0,
+		Message: Message{
+			Role:    "assistant",
+			Content: strings.TrimPrefix(claudeResponse.Completion, " "),
+			Name:    nil,
+		},
+		FinishReason: stopReasonClaude2OpenAI(claudeResponse.StopReason),
+	}
+	fullTextResponse := OpenAITextResponse{
+		Id:      fmt.Sprintf("chatcmpl-%s", common.GetUUID()),
+		Object:  "chat.completion",
+		Created: common.GetTimestamp(),
+		Choices: []OpenAITextResponseChoice{choice},
+	}
+	return &fullTextResponse
+}