diff options
Diffstat (limited to 'bot.go')
| -rw-r--r-- | bot.go | 242 |
1 files changed, 242 insertions, 0 deletions
@@ -0,0 +1,242 @@ +package main + +import ( + "bufio" + "bytes" + "elefant/models" + "encoding/json" + "fmt" + "io" + "log/slog" + "net/http" + "os" + "strings" + "time" + + "github.com/rivo/tview" +) + +var httpClient = http.Client{ + Timeout: time.Second * 20, +} + +var ( + logger *slog.Logger + APIURL = "http://localhost:8080/v1/chat/completions" + DB = map[string]map[string]any{} + userRole = "user" + assistantRole = "assistant" + toolRole = "tool" + assistantIcon = "<🤖>: " + chunkChan = make(chan string, 10) + streamDone = make(chan bool, 1) + chatBody *models.ChatBody + systemMsg = `You're a helpful assistant. +# Tools +You can do functions call if needed. +Your current tools: +<tools> +{ +"name":"get_id", +"args": "username" +} +</tools> +To make a function call return a json object within __tool_call__ tags; +Example: +__tool_call__ +{ +"name":"get_id", +"args": "Adam" +} +__tool_call___ +When making function call avoid typing anything else. 'tool' user will respond with the results of the call. +After that you are free to respond to the user. +` +) + +// predifine funcs +func getUserDetails(id ...string) map[string]any { + // db query + // return DB[id[0]] + return map[string]any{ + "username": "fm11", + "id": 24983, + "reputation": 911, + "balance": 214.73, + } +} + +type fnSig func(...string) map[string]any + +var fnMap = map[string]fnSig{ + "get_id": getUserDetails, +} + +// ==== + +func getUserInput(userPrompt string) string { + // fmt.Printf("<🤖>: %s\n<user>:", botMsg) + fmt.Printf(userPrompt) + reader := bufio.NewReader(os.Stdin) + line, err := reader.ReadString('\n') + if err != nil { + panic(err) // think about it + } + // fmt.Printf("read line: %s-\n", line) + return line +} + +func formMsg(chatBody *models.ChatBody, newMsg, role string) io.Reader { + if newMsg != "" { // otherwise let the bot continue + newMsg := models.MessagesStory{Role: role, Content: newMsg} + chatBody.Messages = append(chatBody.Messages, newMsg) + } + data, err := json.Marshal(chatBody) + if err != nil { + panic(err) + } + return bytes.NewReader(data) +} + +// func sendMsgToLLM(body io.Reader) (*models.LLMRespChunk, error) { +func sendMsgToLLM(body io.Reader) (any, error) { + resp, err := httpClient.Post(APIURL, "application/json", body) + if err != nil { + logger.Error("llamacpp api", "error", err) + return nil, err + } + llmResp := []models.LLMRespChunk{} + // chunkChan <- assistantIcon + reader := bufio.NewReader(resp.Body) + counter := 0 + for { + llmchunk := models.LLMRespChunk{} + if counter > 2000 { + streamDone <- true + break + } + line, err := reader.ReadBytes('\n') + if err != nil { + streamDone <- true + panic(err) + } + // logger.Info("linecheck", "line", string(line), "len", len(line), "counter", counter) + if len(line) <= 1 { + continue // skip \n + } + // starts with -> data: + line = line[6:] + if err := json.Unmarshal(line, &llmchunk); err != nil { + logger.Error("failed to decode", "error", err, "line", string(line)) + streamDone <- true + return nil, err + } + llmResp = append(llmResp, llmchunk) + logger.Info("streamview", "chunk", llmchunk) + // if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason != "chat.completion.chunk" { + if llmchunk.Choices[len(llmchunk.Choices)-1].FinishReason == "stop" { + streamDone <- true + // last chunk + break + } + counter++ + // bot sends way too many \n + answerText := strings.ReplaceAll(llmchunk.Choices[0].Delta.Content, "\n\n", "\n") + chunkChan <- answerText + } + return llmResp, nil +} + +func chatRound(userMsg, role string, tv *tview.TextView) { + botRespMode = true + reader := formMsg(chatBody, userMsg, role) + go sendMsgToLLM(reader) + fmt.Fprintf(tv, assistantIcon) + respText := strings.Builder{} +out: + for { + select { + case chunk := <-chunkChan: + // fmt.Printf(chunk) + fmt.Fprintf(tv, chunk) + respText.WriteString(chunk) + case <-streamDone: + break out + } + } + botRespMode = false + chatBody.Messages = append(chatBody.Messages, models.MessagesStory{ + Role: assistantRole, Content: respText.String(), + }) + // TODO: + // bot msg is done; + // now check it for func call + logChat("testlog", chatBody.Messages) + findCall(respText.String(), tv) +} + +func logChat(fname string, msgs []models.MessagesStory) { + data, err := json.MarshalIndent(msgs, "", " ") + if err != nil { + logger.Error("failed to marshal", "error", err) + } + if err := os.WriteFile(fname, data, 0666); err != nil { + logger.Error("failed to write log", "error", err) + } +} + +func findCall(msg string, tv *tview.TextView) { + prefix := "__tool_call__\n" + suffix := "\n__tool_call__" + fc := models.FuncCall{} + if !strings.HasPrefix(msg, prefix) || + !strings.HasSuffix(msg, suffix) { + return + } + jsStr := strings.TrimSuffix(strings.TrimPrefix(msg, prefix), suffix) + if err := json.Unmarshal([]byte(jsStr), &fc); err != nil { + logger.Error("failed to unmarshal tool call", "error", err) + return + // panic(err) + } + // call a func + f, ok := fnMap[fc.Name] + if !ok { + m := fmt.Sprintf("%s is not implemented", fc.Name) + chatRound(m, toolRole, tv) + return + } + resp := f(fc.Args) + toolMsg := fmt.Sprintf("tool response: %+v", resp) + // reader := formMsg(chatBody, toolMsg, toolRole) + // sendMsgToLLM() + chatRound(toolMsg, toolRole, tv) + // return func result to the llm +} +func init() { + file, err := os.OpenFile("log.txt", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644) + if err != nil { + panic(err) + } + defer file.Close() + logger = slog.New(slog.NewTextHandler(file, &slog.HandlerOptions{})) + logger.Info("test msg") + firstMsg := "Hello! What can I do for you?" + // fm, err := fillTempl("chatml", chatml) + // if err != nil { + // panic(err) + // } + // https://github.com/coreydaley/ggerganov-llama.cpp/blob/master/examples/server/README.md + chatBody = &models.ChatBody{ + Model: "modl_name", + Stream: true, + Messages: []models.MessagesStory{ + {Role: "system", Content: systemMsg}, + {Role: assistantRole, Content: firstMsg}, + }, + } + // fmt.Printf("<🤖>: Hello! How can I help?") + // for { + // chatLoop() + // } +} |