path: root/main.go

package main

import (
	"bytes"
	"context"
	"crypto/tls"
	"encoding/json"
	"flag"
	"fmt"
	"log"
	"net/http"
	"net/url"
	"os"
	"strings"
	"time"

	"github.com/alecthomas/chroma/v2/quick"
	"github.com/google/generative-ai-go/genai"
	"github.com/lrstanley/girc"
	"github.com/pelletier/go-toml/v2"
	openai "github.com/sashabaranov/go-openai"
	"golang.org/x/net/proxy"
	"google.golang.org/api/option"
)

type TomlConfig struct {
	IrcServer           string
	IrcPort             int
	IrcNick             string
	IrcSaslUser         string
	IrcSaslPass         string
	IrcChannels         []string
	OllamaEndpoint      string
	Temp                float64
	OllamaSystem        string
	RequestTimeout      int
	MillaReconnectDelay int
	EnableSasl          bool
	Model               string
	ChromaStyle         string
	ChromaFormatter     string
	Provider            string
	Apikey              string
	TopP                float32
	TopK                int32
	Chat                bool
	Admins              []string
	Color               bool
	SkipTLSVerify       bool
}

type OllamaResponse struct {
	Response string `json:"response"`
}

type OllamaRequestOptions struct {
	Temperature float64 `json:"temperature"`
}

type OllamaChatMessage struct {
	Role    string `json:"role"`
	Content string `json:"content"`
}

type OllamaChatMessages struct {
	Messages []OllamaChatMessage `json:"messages"`
}

type OllamaRequest struct {
	Model   string               `json:"model"`
	System  string               `json:"system"`
	Prompt  string               `json:"prompt"`
	Stream  bool                 `json:"stream"`
	Format  string               `json:"format"`
	Options OllamaRequestOptions `json:"options"`
}

type OllamaChatRequest struct {
	Model      string               `json:"model"`
	Stream     bool                 `json:"stream"`
	Keep_alive time.Duration        `json:"keep_alive"`
	Options    OllamaRequestOptions `json:"options"`
	Format     string               `json:"format"`
	Messages   OllamaChatMessages   `json:"messages"`
}

type OllamaChatResponse struct {
	Messages OllamaChatMessages `json:"messages"`
}

func printResponse(resp *genai.GenerateContentResponse) string {
	result := ""

	for _, cand := range resp.Candidates {
		if cand.Content != nil {
			for _, part := range cand.Content.Parts {
				result += fmt.Sprintln(part)
				log.Println(part)
			}
		}
	}

	return result
}

func runIRC(appConfig TomlConfig, ircChan chan *girc.Client) {
	irc := girc.New(girc.Config{
		Server: appConfig.IrcServer,
		Port:   appConfig.IrcPort,
		Nick:   appConfig.IrcNick,
		User:   appConfig.IrcNick,
		Name:   appConfig.IrcNick,
		SSL:    true,
		TLSConfig: &tls.Config{InsecureSkipVerify: appConfig.SkipTLSVerify,
			ServerName: appConfig.IrcServer},
	})

	saslUser := appConfig.IrcSaslUser
	saslPass := appConfig.IrcSaslPass

	if appConfig.EnableSasl && saslUser != "" && saslPass != "" {
		irc.Config.SASL = &girc.SASLPlain{
			User: appConfig.IrcSaslUser,
			Pass: appConfig.IrcSaslPass,
		}
	}

	irc.Handlers.AddBg(girc.CONNECTED, func(c *girc.Client, e girc.Event) {
		for _, channel := range appConfig.IrcChannels {
			c.Cmd.Join(channel)
		}
	})

	if appConfig.Provider == "ollama" {
		irc.Handlers.AddBg(girc.PRIVMSG, func(client *girc.Client, event girc.Event) {
			if strings.HasPrefix(event.Last(), appConfig.IrcNick+": ") {
				prompt := strings.TrimPrefix(event.Last(), appConfig.IrcNick+": ")
				log.Println(prompt)

				var jsonPayload []byte
				var err error

				if appConfig.Chat {
					ollamaRequest := OllamaChatRequest{
						Model:  appConfig.Model,
						Stream: false,
						Format: "json",
						Messages: OllamaChatMessages{
							[]OllamaChatMessage{{
								Role:    "user",
								Content: prompt,
							}},
						},
						Options: OllamaRequestOptions{
							Temperature: appConfig.Temp,
						},
					}
					jsonPayload, err = json.Marshal(ollamaRequest)
					if err != nil {
						client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

						return
					}
				} else {
					ollamaRequest := OllamaRequest{
						Model:  appConfig.Model,
						System: appConfig.OllamaSystem,
						Prompt: prompt,
						Stream: false,
						Format: "json",
						Options: OllamaRequestOptions{
							Temperature: appConfig.Temp,
						},
					}
					jsonPayload, err = json.Marshal(ollamaRequest)
					if err != nil {
						client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

						return
					}
				}

				// jsonPayload, err := json.Marshal(ollamaRequest)
				// if err != nil {
				// 	client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

				// 	return
				// }

				ctx, cancel := context.WithTimeout(context.Background(), time.Duration(appConfig.RequestTimeout)*time.Second)
				defer cancel()

				request, err := http.NewRequest(http.MethodPost, appConfig.OllamaEndpoint, bytes.NewBuffer(jsonPayload))
				request = request.WithContext(ctx)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				request.Header.Set("Content-Type", "application/json")

				httpClient := http.Client{}
				allProxy := os.Getenv("ALL_PROXY")
				if allProxy != "" {
					proxyUrl, err := url.Parse(allProxy)
					if err != nil {
						client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

						return
					}
					transport := &http.Transport{
						Proxy: http.ProxyURL(proxyUrl),
					}

					httpClient.Transport = transport
				}

				response, err := httpClient.Do(request)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}
				defer response.Body.Close()

				var ollamaResponse OllamaResponse
				err = json.NewDecoder(response.Body).Decode(&ollamaResponse)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				var writer bytes.Buffer
				err = quick.Highlight(&writer,
					ollamaResponse.Response,
					"markdown",
					appConfig.ChromaFormatter,
					appConfig.ChromaStyle)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				log.Println(writer.String())
				client.Cmd.Reply(event, writer.String())
			}
		})
	} else if appConfig.Provider == "gemini" {
		irc.Handlers.AddBg(girc.PRIVMSG, func(client *girc.Client, event girc.Event) {
			if strings.HasPrefix(event.Last(), appConfig.IrcNick+": ") {
				prompt := strings.TrimPrefix(event.Last(), appConfig.IrcNick+": ")
				log.Println(prompt)

				ctx, cancel := context.WithTimeout(context.Background(), time.Duration(appConfig.RequestTimeout)*time.Second)
				defer cancel()

				dialer := proxy.FromEnvironment()

				transport := http.Transport{
					Dial: dialer.Dial,
				}
				httpClient := http.Client{
					Transport: &transport,
					Timeout:   time.Duration(appConfig.RequestTimeout) * time.Second,
				}

				clientGemini, err := genai.NewClient(ctx, option.WithAPIKey(appConfig.Apikey), option.WithHTTPClient(&httpClient))
				// clientGemini, err := genai.NewClient(ctx, option.WithAPIKey(appConfig.Apikey))
				// if err != nil {
				// 	client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

				// 	return
				// }
				defer clientGemini.Close()

				model := clientGemini.GenerativeModel(appConfig.Model)
				model.SetTemperature(float32(appConfig.Temp))
				model.SetTopK(appConfig.TopK)
				model.SetTopP(appConfig.TopP)
				resp, err := model.GenerateContent(ctx, genai.Text(prompt))
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				var writer bytes.Buffer
				err = quick.Highlight(
					&writer,
					printResponse(resp),
					"markdown",
					appConfig.ChromaFormatter,
					appConfig.ChromaStyle)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				log.Println(writer.String())
				client.Cmd.Reply(event, writer.String())
			}
		})
	} else if appConfig.Provider == "chatgpt" {
		irc.Handlers.AddBg(girc.PRIVMSG, func(client *girc.Client, event girc.Event) {
			if strings.HasPrefix(event.Last(), appConfig.IrcNick+": ") {
				prompt := strings.TrimPrefix(event.Last(), appConfig.IrcNick+": ")
				log.Println(prompt)

				ctx, cancel := context.WithTimeout(context.Background(), time.Duration(appConfig.RequestTimeout)*time.Second)
				defer cancel()

				allProxy := os.Getenv("ALL_PROXY")
				config := openai.DefaultConfig(appConfig.Apikey)
				if allProxy != "" {
					proxyUrl, err := url.Parse(allProxy)
					if err != nil {
						client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

						return
					}
					transport := &http.Transport{
						Proxy: http.ProxyURL(proxyUrl),
					}

					config.HTTPClient = &http.Client{
						Transport: transport,
					}
				}

				gptClient := openai.NewClientWithConfig(config)

				messages := make([]openai.ChatCompletionMessage, 0)

				messages = append(messages, openai.ChatCompletionMessage{
					Role:    "system",
					Content: prompt,
				})

				resp, err := gptClient.CreateChatCompletion(ctx, openai.ChatCompletionRequest{
					Model:    appConfig.Model,
					Messages: messages,
				})
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				var writer bytes.Buffer
				err = quick.Highlight(
					&writer,
					resp.Choices[0].Message.Content,
					"markdown",
					appConfig.ChromaFormatter,
					appConfig.ChromaStyle)
				if err != nil {
					client.Cmd.ReplyTo(event, fmt.Sprintf("error: %s", err.Error()))

					return
				}

				log.Println(writer.String())
				lines := strings.Split(writer.String(), "\n")

				for _, line := range lines {
					client.Cmd.Reply(event, line)
				}
			}
		})
	}

	ircChan <- irc

	for {
		if err := irc.Connect(); err != nil {
			log.Println(err)
			log.Println("reconnecting in {appConfig.MillaReconnectDelay/1000}")
			time.Sleep(time.Duration(appConfig.MillaReconnectDelay) * time.Second)
		} else {
			return
		}
	}
}

func main() {
	var appConfig TomlConfig

	configPath := flag.String("config", "./config.toml", "path to the config file")

	flag.Parse()

	data, err := os.ReadFile(*configPath)
	if err != nil {
		log.Fatal(err)
	}

	err = toml.Unmarshal(data, &appConfig)
	if err != nil {
		log.Fatal(err)
	}

	log.Println(appConfig)

	ircChan := make(chan *girc.Client, 1)

	runIRC(appConfig, ircChan)
}