langchain-go/backend/agent/basicAgent.go

package agent

import (
	"context"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/tmc/langchaingo/llms"
	"github.com/tmc/langchaingo/outputparser"
	"github.com/tmc/langchaingo/prompts"
)

func Call(llm llms.Model, ctx context.Context) (response string) {

	response, err := llms.GenerateFromSinglePrompt(
		ctx,
		llm,
		"Hello! My name is wonder!",
	)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("AI:", response)

	return response

}
func CallWithMessage(llm llms.Model, ctx context.Context, prompt string) (response string) {

	response, err := llms.GenerateFromSinglePrompt(
		ctx,
		llm,
		"用户正在学习Go语言，你是用户的助手。\n"+prompt,
	)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("AI:", response)

	return response

}
func CallWithAgent(llm llms.Model, ctx context.Context, topic string, promptPath string) (response string) {
	content, err := os.ReadFile(promptPath)
	if err != nil {
		fmt.Printf("File err: %v", err)
		return
	}

	text := string(content)

	template := prompts.NewPromptTemplate(text, []string{".Knowledge"})
	prompt, err := template.Format(map[string]any{
		"Knowledge": topic,
	})

	fmt.Println("Me: ", prompt)
	if err != nil {
		fmt.Printf("Prompt err: %v", err)
	}
	response = CallWithMessage(llm, ctx, prompt)
	return response
}

func CallWithAgentDefined[T any](llm llms.Model, ctx context.Context, topic string, promptPath string, responseType T) (response T) {

	parse, err := outputparser.NewDefined(responseType)
	if err != nil {
		fmt.Printf("CreateParse err: %v", err)
		return
	}

	content, err := os.ReadFile(promptPath)
	if err != nil {
		fmt.Printf("File err: %v", err)
		return
	}

	text := string(content)

	textWithFormatInstruction := text + "\n" + parse.GetFormatInstructions()

	template := prompts.NewPromptTemplate(textWithFormatInstruction, []string{".Knowledge"})
	prompt, err := template.Format(map[string]any{
		"Knowledge": topic,
	})

	fmt.Println("Me: ", prompt)
	if err != nil {
		fmt.Printf("Prompt err: %v", err)
	}

	responseString, err := llms.GenerateFromSinglePrompt(
		ctx,
		llm,
		"用户正在学习Go语言和React框架，你是用户的助手。\n"+prompt,
	)

	fmt.Printf("Raw output: %v\n\n", responseString)

	if err != nil {
		log.Fatal(err)
	}

	responseString = strings.TrimPrefix(responseString, "\n")
	responseString = strings.TrimSuffix(responseString, "\n")

	if !strings.Contains(responseString, "```json") {
		responseString = "```json\n" + responseString + "\n```"
	}

	// fmt.Printf("AI: %s\n\n", responseString)

	response, err = parse.Parse(responseString)
	if err != nil {
		fmt.Printf("Parse err: %v", err)
		return
	}

	fmt.Printf("API:\n%v", response)

	return response
}