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chat.go
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chat.go
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package chatgpt
import (
"context"
"errors"
"io"
"log"
"net/http"
"net/url"
"strings"
"github.com/billikeu/go-chatgpt/common"
"github.com/billikeu/go-chatgpt/params"
openai "github.com/sashabaranov/go-openai"
)
type ChatGPTConversion struct {
secretKey string //openai api
botConfig openai.ClientConfig
client *openai.Client
requst *Request
proxy string
}
func NewChatGPTConversion(secretKey string) *ChatGPTConversion {
chat := &ChatGPTConversion{
secretKey: secretKey,
botConfig: openai.DefaultConfig(secretKey),
requst: NewRequest(),
}
return chat
}
/*
set proxy
chat.SetProxy("socks5://127.0.0.1:3126")
chat.SetProxy("http://127.0.0.1:3127")
*/
func (chat *ChatGPTConversion) SetProxy(proxy string) error {
if err := chat.setSocksProxy(proxy); err != nil {
return err
}
if err := chat.setHttpProxy(proxy); err != nil {
return err
}
chat.proxy = proxy
return nil
}
func (chat *ChatGPTConversion) setHttpProxy(proxy string) error {
if !strings.HasPrefix(proxy, "http") {
return nil
}
transport := &http.Transport{}
proxyUrl, err := url.Parse(proxy)
if err != nil {
return err
}
transport.Proxy = http.ProxyURL(proxyUrl)
chat.botConfig.HTTPClient = &http.Client{
Transport: transport,
}
return nil
}
// set socks proxy
func (chat *ChatGPTConversion) setSocksProxy(proxy string) error {
if !strings.HasPrefix(proxy, "socks5") {
return nil
}
transport := &http.Transport{}
dialContext, err := common.NewDialContext(proxy[9:])
if err != nil {
panic(err)
}
transport.DialContext = dialContext
chat.botConfig.HTTPClient = &http.Client{
Transport: transport,
}
return nil
}
// set base URL, default openai URL
func (chat *ChatGPTConversion) SetBaseURL(baseURL string) {
if baseURL != "" {
chat.botConfig.BaseURL = baseURL
}
}
// init client
func (chat *ChatGPTConversion) Init() error {
chat.client = openai.NewClientWithConfig(chat.botConfig)
return nil
}
// set system role message
func (chat *ChatGPTConversion) SetSystemMsg(content string) {
chat.requst.PutSystemMsg(content, "")
}
/*
// ask chatgpt
callback := func(params *chatgpt.CallParams, err error) {
if params == nil {
return
}
if err != nil {
log.Println(params.MsgId, err)
}
if params.Done {
log.Println("answer: ", params.MsgId, params.Text)
}else{
log.Println("answer: ", params.MsgId, params.Chunk)
}
}
*/
func (chat *ChatGPTConversion) Ask(ctx context.Context, prompt string, callback func(answer *params.Answer, err error)) (err error) {
defer func() {
if err != nil && callback != nil {
callback(nil, err)
}
}()
if ctx == nil {
ctx = context.Background()
}
msgId, parentId := chat.requst.PutUserMsg(prompt, "")
msg := chat.requst.GetMessage()
// log.Println("send message: ", msg)
req := openai.ChatCompletionRequest{
Model: openai.GPT3Dot5Turbo,
MaxTokens: 1000,
Messages: msg,
Stream: true,
}
defer func() {
if err != nil {
chat.requst.PopMsg()
}
}()
stream, err := chat.client.CreateChatCompletionStream(ctx, req)
if err != nil {
return err
}
defer stream.Close()
var text string
var chunkIndex int
for {
chunkIndex += 1
var response openai.ChatCompletionStreamResponse
response, err = stream.Recv()
if errors.Is(err, io.EOF) {
if callback != nil {
callback(params.NewAnswer(msgId, parentId, "", text, true, chunkIndex), nil)
}
return nil
}
if err != nil {
log.Println("stream error: ", err)
if callback != nil {
callback(params.NewAnswer(msgId, parentId, "", text, true, chunkIndex), err)
}
return
}
chunk := response.Choices[0].Delta.Content
text += chunk
if response.Choices[0].FinishReason != "" {
chat.requst.SetResStream(msgId, text, &response)
if callback != nil {
callback(params.NewAnswer(msgId, parentId, chunk, text, true, chunkIndex), nil)
}
break
}
if callback != nil {
callback(params.NewAnswer(msgId, parentId, chunk, text, false, chunkIndex), err)
}
}
return nil
}
func (chat *ChatGPTConversion) RefreshProxy(proxy string) error {
if chat.proxy == proxy {
return nil
}
if proxy == "" {
chat.botConfig.HTTPClient = &http.Client{}
chat.proxy = proxy
return nil
}
if err := chat.SetProxy(proxy); err != nil {
return err
}
chat.client = openai.NewClientWithConfig(chat.botConfig)
return nil
}
func (chat *ChatGPTConversion) RefreshSecretKey(secretKey string) error {
if chat.secretKey == secretKey {
return nil
}
chat.botConfig = openai.DefaultConfig(secretKey)
err := chat.SetProxy(chat.proxy)
if err != nil {
return err
}
chat.client = openai.NewClientWithConfig(chat.botConfig)
return nil
}