package workers

import (
	"context"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"go-bot/config"
	"go-bot/tools"
	"os"
	"slices"

	"io"
	"log"
	"regexp"
	"strconv"
	"strings"

	"github.com/imroc/req/v3"
	openai "github.com/sashabaranov/go-openai"
)

func init() {
	plugins := config.GetConfig()["PLUGINS"].([]interface{})
	if slices.Contains(plugins, "ai") {
		RegisterWorkerFactory("ai", func(parms []string, uid, gid, role, mid, rawMsg string) Worker {
			return &AI{
				StdAns: NewStdAns(parms, uid, gid, role, mid, rawMsg),
			}
		})
	}
}

type AI struct {
	*StdAns
}

func (a *AI) GetMsg() string {
	if len(a.Parms) < 2 {
		return "使用!ai xxx 向我提问吧"
	}

	ask := a.Parms[1]
	if ask == "" || strings.HasPrefix(ask, "[CQ:reply,id=") {
		return "不问问题你说个屁！"
	}

	OPENAI_API_KEY, OPENAI_BaseURL, MODEL, PROMPT, CONTEXT := tools.GetOAIConfig()
	if OPENAI_API_KEY == "" {
		return "OPENAI_API_KEY 未配置"
	}
	oaiconfig := openai.DefaultConfig(OPENAI_API_KEY)
	oaiconfig.BaseURL = OPENAI_BaseURL

	client := openai.NewClientWithConfig(oaiconfig)
	msg := fmt.Sprintf("[CQ:at,qq=%s] ", a.UID)
	if strings.ToLower(a.Parms[1]) != "models" {

		// 如果非回复消息
		if !strings.HasPrefix(a.Parms[len(a.Parms)-1], "[CQ:reply,id=") {
			messages := make([]openai.ChatCompletionMessage, 0)
			messages = append(messages, openai.ChatCompletionMessage{
				Role:    openai.ChatMessageRoleSystem,
				Content: PROMPT,
			})
			// println("messages0:", messages)
			var key string
			redisClient := tools.GetRedisClient()
			// 如果redisClient不为空，则获取上下文
			if redisClient != nil {
				// 限制请求频率
				if !tools.CheckRequestFrequency(a.GID, a.UID, 10) {
					log.Printf("请求过于频繁。\n")
					return "请求过于频繁。"
				}

				key = fmt.Sprintf("context:%s:%s:%s", "ai", a.GID, a.UID)
				// 获取上下文
				message := openai.ChatCompletionMessage{
					Role:    openai.ChatMessageRoleUser,
					Content: a.RawMsg[strings.Index(a.RawMsg, " ")+1:],
				}
				// 序列化为 JSON 字符串
				jsonMessage, err := json.Marshal(message)
				if err != nil {
					log.Println("序列化错误:", err)
					log.Println("存储的 JSON 字符串:", string(jsonMessage))

					return "序列化错误"
				}
				tools.AddToContext(key, jsonMessage, CONTEXT)
				// }
				// println("RawMsg:", a.RawMsg[strings.Index(a.RawMsg, " ")+1:])
				length := tools.GetListLength(key)
				// if length > 0 {
				for i := 0; i < int(length); i++ {
					message, err := tools.GetListValue(key, int64(i))
					if err != nil {
						log.Println("获取上下文失败:", err)
						return "获取上下文失败"
					}
					// log.Println("读取的 JSON 字符串:", message)

					var msg openai.ChatCompletionMessage
					err = json.Unmarshal([]byte(message), &msg)
					if err != nil {
						log.Println("反序列化错误:", err)

						return "反序列化错误"
					}
					messages = append(messages, msg)
				}
			} else {

				messages = append(messages, openai.ChatCompletionMessage{
					Role:    openai.ChatMessageRoleUser,
					Content: a.RawMsg[strings.Index(a.RawMsg, " ")+1:],
				})

			}
			// println("messages:", messages)
			// for i, msg := range messages {
			// 	fmt.Printf("消息 %d:\n", i+1)
			// 	fmt.Printf("  角色: %s\n", msg.Role)
			// 	fmt.Printf("  内容: %s\n", msg.Content)
			// 	fmt.Println()
			// }
			resp, err := client.CreateChatCompletion(
				context.Background(),
				openai.ChatCompletionRequest{
					Model:    MODEL,
					Stream:   false,
					Messages: messages,
				},
			)
			if err != nil {
				log.Println("ChatCompletion error: ", err)
				tools.RemoveLastValueFromList(key)
				return "请求失败"
			}
			// println(resp.Choices[0].Message.Content)
			content := resp.Choices[0].Message.Content
			if redisClient != nil {

				message := openai.ChatCompletionMessage{
					Role:    openai.ChatMessageRoleAssistant,
					Content: stripMarkdown(content)}
				// 序列化为 JSON 字符串
				jsonMessage, err := json.Marshal(message)
				if err != nil {
					log.Println("Assistant消息序列化错误:", err)
					return "Assistant消息序列化错误"
				}
				tools.AddToContext(key, jsonMessage, CONTEXT)

			}
			return msg + stripMarkdown(content)
		} else {
			// 匹配回复消息
			pattern := `^\[CQ:reply,id=(-?\d+)\]`
			re := regexp.MustCompile(pattern)
			matches := re.FindStringSubmatch(a.Parms[len(a.Parms)-1])
			var msgId string
			if len(matches) > 0 {

				msgId = matches[1]
				// println("msgId:", msgId)
			} else {
				msgId = ""
				log.Println("未找到回复消息")
				return "未找到回复消息"
			}
			file, picUrl, fileSizeStr := a.GetHisMsg(msgId)
			// println("file:", file, "picUrl:", picUrl, "fileSizeStr:", fileSizeStr)

			if picUrl == "" {
				log.Println("未找到文件信息")
				return "未找到文件信息"
			}
			fileSize, err := strconv.ParseFloat(fileSizeStr, 64)
			if err != nil {
				fmt.Println("获取图片大小失败:", err)
				return "获取图片大小失败"
			}
			if fileSize/1024/1024 > 5.0 {
				log.Println("文件大小超过5M")
				return "文件大小超过5M"
			}
			filePath := a.GetImage(file)
			// println("filePath:", filePath)
			if filePath == "" {
				log.Println("获取图片失败")
				// return "获取图片失败"
				// 下载picUrl文件

			}
			base64Img := Image2Base64(filePath, picUrl)
			if base64Img == "" {
				log.Println("图片转换base64失败")
				return "图片转换base64失败"
			}
			// 找到第一个空格的位置
			firstSpaceIndex := strings.Index(a.RawMsg, " ")

			// 找到最后一个空格的位置
			lastSpaceIndex := strings.LastIndex(a.RawMsg, " ")
			// 调用图片分析
			resp, err := client.CreateChatCompletion(
				context.Background(),
				openai.ChatCompletionRequest{
					Model: MODEL,
					Messages: []openai.ChatCompletionMessage{
						{
							Role: "user",
							MultiContent: []openai.ChatMessagePart{
								{
									Type: openai.ChatMessagePartTypeText,
									Text: a.RawMsg[firstSpaceIndex+1 : lastSpaceIndex],
								}, {
									Type: openai.ChatMessagePartTypeImageURL,
									ImageURL: &openai.ChatMessageImageURL{
										URL:    base64Img,
										Detail: openai.ImageURLDetailAuto,
									},
								},
							},
						},
					},
				},
			)
			if err != nil {
				log.Println("ChatCompletion error: ", err)
				return "请求失败,api可能不支持图片上传"

			}
			msg += resp.Choices[0].Message.Content

		}
		return stripMarkdown(msg)
	}
	models, err := client.ListModels(context.Background())
	if err != nil {
		log.Println("ListModels error: ", err)
		return "查询支持模型失败！"

	}
	var modelList string
	for _, model := range models.Models {
		if MODEL == model.ID {
			model.ID = model.ID + "\t(当前使用)"
		}
		modelList += model.ID + "\n"
	}
	return modelList
	// return handleModelRequest(OPENAI_API_KEY, OPENAI_BaseURL)
}

func stripMarkdown(text string) string {

	// println("before:", text)
	// 移除代码块，但保留代码内容
	re := regexp.MustCompile("(?s)```(?:\\w+\\s*\n)?(.*?)```")
	text = re.ReplaceAllStringFunc(text, func(match string) string {
		submatches := re.FindStringSubmatch(match)
		if len(submatches) > 1 {
			return strings.TrimSpace(submatches[1])
		}
		return match
	})

	// 移除行内代码
	re = regexp.MustCompile("`([^`]+)`")
	text = re.ReplaceAllString(text, "$1")

	// 移除标题
	re = regexp.MustCompile(`(?m)^#{1,6}\s+(.+)$`)
	text = re.ReplaceAllString(text, "$1")

	// 移除粗体和斜体
	re = regexp.MustCompile(`(\*\*|__)(.+?)(\*\*|__)`)
	text = re.ReplaceAllString(text, "$2")
	re = regexp.MustCompile(`(\*|_)(.+?)(\*|_)`)
	text = re.ReplaceAllString(text, "$2")

	// 移除链接，保留链接文本
	re = regexp.MustCompile(`\[([^\]]+)\]\([^\)]+\)`)
	text = re.ReplaceAllString(text, "$1")

	// 移除图片
	re = regexp.MustCompile(`!\[([^\]]*)\]\([^\)]+\)`)
	text = re.ReplaceAllString(text, "$1")

	// 移除水平线
	re = regexp.MustCompile(`(?m)^-{3,}|_{3,}|\*{3,}$`)
	text = re.ReplaceAllString(text, "")

	// 移除块引用
	re = regexp.MustCompile(`(?m)^>\s+(.+)`)
	text = re.ReplaceAllString(text, "$1")

	// 移除列表标记
	re = regexp.MustCompile(`(?m)^[ \t]*[\*\-+][ \t]+`)
	text = re.ReplaceAllString(text, "")
	re = regexp.MustCompile(`(?m)^[ \t]*\d+\.[ \t]+`)
	text = re.ReplaceAllString(text, "")

	// 移除多余的空行
	re = regexp.MustCompile(`\n{3,}`)
	text = re.ReplaceAllString(text, "\n\n")
	// println("after:", text)
	return strings.TrimSpace(text)
}

func Image2Base64(path string, picUrl string) string {
	// 尝试从文件路径读取图片
	file, err := os.Open(path)
	if err == nil {
		defer file.Close()
		if data, err := io.ReadAll(file); err == nil {
			return "data:image/jpeg;base64," + base64.StdEncoding.EncodeToString(data)
		}
	}

	// 如果文件路径不可用，则尝试从 URL 下载图片

	client := req.C().
		SetUserAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36").
		SetTLSFingerprintChrome() // 模拟 Chrome 浏览器的 TLS 握手指纹，让网站相信这是 Chrome 浏览器在访问，予以通行。

	resp, err := client.R().Get(picUrl)
	if err != nil {
		return ""
	}

	defer resp.Body.Close()

	if data, err := io.ReadAll(resp.Body); err == nil {
		return "data:image/jpeg;base64," + base64.StdEncoding.EncodeToString(data)
	}
	return ""

}