refactor: remove unused functions and imports from ali text handler

relay/channel/ali/text.go

 package ali
 
 import (
-	"bufio"
-	"encoding/json"
-	"io"
-	"net/http"
-	"strings"
-
-	"github.com/QuantumNous/new-api/common"
 	"github.com/QuantumNous/new-api/dto"
-	"github.com/QuantumNous/new-api/relay/helper"
-	"github.com/QuantumNous/new-api/service"
-
-	"github.com/QuantumNous/new-api/types"
-
-	"github.com/gin-gonic/gin"
 )
 
 // https://help.aliyun.com/document_detail/613695.html?spm=a2c4g.2399480.0.0.1adb778fAdzP9w#341800c0f8w0r
@@ -29,180 +16,3 @@ func requestOpenAI2Ali(request dto.GeneralOpenAIRequest) *dto.GeneralOpenAIReque
 	}
 	return &request
 }
-
-func embeddingRequestOpenAI2Ali(request dto.EmbeddingRequest) *AliEmbeddingRequest {
-	return &AliEmbeddingRequest{
-		Model: request.Model,
-		Input: struct {
-			Texts []string `json:"texts"`
-		}{
-			Texts: request.ParseInput(),
-		},
-	}
-}
-
-func aliEmbeddingHandler(c *gin.Context, resp *http.Response) (*types.NewAPIError, *dto.Usage) {
-	var fullTextResponse dto.FlexibleEmbeddingResponse
-	err := json.NewDecoder(resp.Body).Decode(&fullTextResponse)
-	if err != nil {
-		return types.NewOpenAIError(err, types.ErrorCodeBadResponseBody, http.StatusInternalServerError), nil
-	}
-
-	service.CloseResponseBodyGracefully(resp)
-
-	model := c.GetString("model")
-	if model == "" {
-		model = "text-embedding-v4"
-	}
-	jsonResponse, err := json.Marshal(fullTextResponse)
-	if err != nil {
-		return types.NewError(err, types.ErrorCodeBadResponseBody), nil
-	}
-	c.Writer.Header().Set("Content-Type", "application/json")
-	c.Writer.WriteHeader(resp.StatusCode)
-	c.Writer.Write(jsonResponse)
-	return nil, &fullTextResponse.Usage
-}
-
-func embeddingResponseAli2OpenAI(response *AliEmbeddingResponse, model string) *dto.OpenAIEmbeddingResponse {
-	openAIEmbeddingResponse := dto.OpenAIEmbeddingResponse{
-		Object: "list",
-		Data:   make([]dto.OpenAIEmbeddingResponseItem, 0, len(response.Output.Embeddings)),
-		Model:  model,
-		Usage:  dto.Usage{TotalTokens: response.Usage.TotalTokens},
-	}
-
-	for _, item := range response.Output.Embeddings {
-		openAIEmbeddingResponse.Data = append(openAIEmbeddingResponse.Data, dto.OpenAIEmbeddingResponseItem{
-			Object:    `embedding`,
-			Index:     item.TextIndex,
-			Embedding: item.Embedding,
-		})
-	}
-	return &openAIEmbeddingResponse
-}
-
-func responseAli2OpenAI(response *AliResponse) *dto.OpenAITextResponse {
-	choice := dto.OpenAITextResponseChoice{
-		Index: 0,
-		Message: dto.Message{
-			Role:    "assistant",
-			Content: response.Output.Text,
-		},
-		FinishReason: response.Output.FinishReason,
-	}
-	fullTextResponse := dto.OpenAITextResponse{
-		Id:      response.RequestId,
-		Object:  "chat.completion",
-		Created: common.GetTimestamp(),
-		Choices: []dto.OpenAITextResponseChoice{choice},
-		Usage: dto.Usage{
-			PromptTokens:     response.Usage.InputTokens,
-			CompletionTokens: response.Usage.OutputTokens,
-			TotalTokens:      response.Usage.InputTokens + response.Usage.OutputTokens,
-		},
-	}
-	return &fullTextResponse
-}
-
-func streamResponseAli2OpenAI(aliResponse *AliResponse) *dto.ChatCompletionsStreamResponse {
-	var choice dto.ChatCompletionsStreamResponseChoice
-	choice.Delta.SetContentString(aliResponse.Output.Text)
-	if aliResponse.Output.FinishReason != "null" {
-		finishReason := aliResponse.Output.FinishReason
-		choice.FinishReason = &finishReason
-	}
-	response := dto.ChatCompletionsStreamResponse{
-		Id:      aliResponse.RequestId,
-		Object:  "chat.completion.chunk",
-		Created: common.GetTimestamp(),
-		Model:   "ernie-bot",
-		Choices: []dto.ChatCompletionsStreamResponseChoice{choice},
-	}
-	return &response
-}
-
-func aliStreamHandler(c *gin.Context, resp *http.Response) (*types.NewAPIError, *dto.Usage) {
-	var usage dto.Usage
-	scanner := bufio.NewScanner(resp.Body)
-	scanner.Split(bufio.ScanLines)
-	dataChan := make(chan string)
-	stopChan := make(chan bool)
-	go func() {
-		for scanner.Scan() {
-			data := scanner.Text()
-			if len(data) < 5 { // ignore blank line or wrong format
-				continue
-			}
-			if data[:5] != "data:" {
-				continue
-			}
-			data = data[5:]
-			dataChan <- data
-		}
-		stopChan <- true
-	}()
-	helper.SetEventStreamHeaders(c)
-	lastResponseText := ""
-	c.Stream(func(w io.Writer) bool {
-		select {
-		case data := <-dataChan:
-			var aliResponse AliResponse
-			err := json.Unmarshal([]byte(data), &aliResponse)
-			if err != nil {
-				common.SysLog("error unmarshalling stream response: " + err.Error())
-				return true
-			}
-			if aliResponse.Usage.OutputTokens != 0 {
-				usage.PromptTokens = aliResponse.Usage.InputTokens
-				usage.CompletionTokens = aliResponse.Usage.OutputTokens
-				usage.TotalTokens = aliResponse.Usage.InputTokens + aliResponse.Usage.OutputTokens
-			}
-			response := streamResponseAli2OpenAI(&aliResponse)
-			response.Choices[0].Delta.SetContentString(strings.TrimPrefix(response.Choices[0].Delta.GetContentString(), lastResponseText))
-			lastResponseText = aliResponse.Output.Text
-			jsonResponse, err := json.Marshal(response)
-			if err != nil {
-				common.SysLog("error marshalling stream response: " + err.Error())
-				return true
-			}
-			c.Render(-1, common.CustomEvent{Data: "data: " + string(jsonResponse)})
-			return true
-		case <-stopChan:
-			c.Render(-1, common.CustomEvent{Data: "data: [DONE]"})
-			return false
-		}
-	})
-	service.CloseResponseBodyGracefully(resp)
-	return nil, &usage
-}
-
-func aliHandler(c *gin.Context, resp *http.Response) (*types.NewAPIError, *dto.Usage) {
-	var aliResponse AliResponse
-	responseBody, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return types.NewOpenAIError(err, types.ErrorCodeReadResponseBodyFailed, http.StatusInternalServerError), nil
-	}
-	service.CloseResponseBodyGracefully(resp)
-	err = json.Unmarshal(responseBody, &aliResponse)
-	if err != nil {
-		return types.NewOpenAIError(err, types.ErrorCodeBadResponseBody, http.StatusInternalServerError), nil
-	}
-	if aliResponse.Code != "" {
-		return types.WithOpenAIError(types.OpenAIError{
-			Message: aliResponse.Message,
-			Type:    "ali_error",
-			Param:   aliResponse.RequestId,
-			Code:    aliResponse.Code,
-		}, resp.StatusCode), nil
-	}
-	fullTextResponse := responseAli2OpenAI(&aliResponse)
-	jsonResponse, err := common.Marshal(fullTextResponse)
-	if err != nil {
-		return types.NewError(err, types.ErrorCodeBadResponseBody), nil
-	}
-	c.Writer.Header().Set("Content-Type", "application/json")
-	c.Writer.WriteHeader(resp.StatusCode)
-	_, err = c.Writer.Write(jsonResponse)
-	return nil, &fullTextResponse.Usage
-}