package main

import (
	"bufio"
	"fmt"
	"io"
	"net/http"
	"net/url"
	"os"
	"path/filepath"
	"strings"
	"sync"
	"time"

	"github.com/fsnotify/fsnotify"
	"github.com/spf13/viper"
)

type UploadData struct {
	Dyid      string // dyid
	Uid       string // uid
	Secuid    string // secuid
	Pid       string // pid
	CommentId string // comment_id
	Id1       string // id1
	Id2       string // id2
	Id3       string // id3
	Id4       string // id4
	Id5       string // id5
}

var httpClient = &http.Client{
	Transport: &http.Transport{
		MaxIdleConns:        100,
		MaxIdleConnsPerHost: 10,
		IdleConnTimeout:     30 * time.Second,
	},
	Timeout: 30 * time.Second,
}

func main() {
	//程序配置
	//设置默认值
	viper.SetDefault("url", "http://localhost:8080")
	viper.SetDefault("token", "")
	viper.SetDefault("thread-count", 10)
	//设置配置文件名和路径 ./config.toml
	viper.AddConfigPath(".")
	viper.SetConfigName("config")
	viper.SetConfigType("toml")
	viper.SafeWriteConfig() //安全写入默认配置
	//读取配置文件
	if err := viper.ReadInConfig(); err != nil {
		fmt.Errorf("无法读取配置文件: %w", err)
	}
	viper.WatchConfig()
	viper.OnConfigChange(func(e fsnotify.Event) {
		if err := viper.ReadInConfig(); err != nil {
			fmt.Errorf("无法读取配置文件: %w", err)
		}
	})

	//检测./upload
	fmt.Println("程序启动成功，正在检测upload")
	os.Mkdir("./upload", os.ModePerm)
	for {
		files, err := getTxtFiles("./upload")
		if err != nil {
			fmt.Println(err)
			return
		}
		if files != nil {
			wg := sync.WaitGroup{}
			for _, filePath := range files {
				fmt.Println("正在上传文件:", filePath)
				wg.Add(1)
				go func() {
					processFile(filePath)
					os.Remove(filePath)
					wg.Done()
				}()
			}
			wg.Wait()

		}
		time.Sleep(2 * time.Second)
	}
}
func uploadDataToServer(data UploadData) error {
	params := url.Values{}
	params.Add("token", viper.GetString("token"))
	params.Add("dyid", data.Dyid)
	params.Add("uid", data.Uid)
	params.Add("secuid", data.Secuid)
	params.Add("pid", data.Pid)
	params.Add("comment_id", data.CommentId)
	params.Add("id1", data.Id1)
	params.Add("id2", data.Id2)
	params.Add("id3", data.Id3)
	params.Add("id4", data.Id4)
	params.Add("id5", data.Id5)

	resp, err := httpClient.Post(viper.GetString("url")+"/api/data?"+params.Encode(), "application/x-www-form-urlencoded", strings.NewReader(""))
	_, _ = io.Copy(io.Discard, resp.Body)
	return err
}

// 获取目录中的所有txt文件
func getTxtFiles(dir string) ([]string, error) {
	var txtFiles []string

	err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}

		// 只处理普通文件，跳过目录
		if !info.Mode().IsRegular() {
			return nil
		}

		// 检查文件扩展名是否为.txt
		if strings.ToLower(filepath.Ext(path)) == ".txt" {
			txtFiles = append(txtFiles, path)
		}

		return nil
	})

	return txtFiles, err
}

func processFile(filePath string) {
	var wg sync.WaitGroup
	// 打开文件
	file, err := os.Open(filePath)
	if err != nil {
		fmt.Printf("无法打开文件 %s: %v\n", filePath, err)
		return
	}
	defer file.Close()

	// 创建行通道
	lines := make(chan string, 100)

	// 创建10个worker处理文件上传
	for i := 0; i < viper.GetInt("thread-count"); i++ {
		wg.Add(1)
		go func(workerID int) {
			defer wg.Done()
			processLines(lines, workerID, filePath)
		}(i)
	}

	// 读取文件并发送到通道
	scanner := bufio.NewScanner(file)
	lineCount := 0
	for scanner.Scan() {
		line := scanner.Text()
		lines <- line
		lineCount++
	}

	close(lines)
	wg.Wait()

	if err := scanner.Err(); err != nil {
		fmt.Printf("读取文件 %s 错误: %v\n", filePath, err)
	}

	fmt.Printf("文件 %s 处理完成，共处理 %d 行数据\n", filePath, lineCount)
}

func processLines(lines <-chan string, workerID int, filePath string) {
	for line := range lines {
		// 跳过空行
		if strings.TrimSpace(line) == "" {
			continue
		}

		// 使用----分割行数据
		parts := strings.Split(line, "----")
		for i := 0; i < 10; i++ {
			parts = append(parts, "")
		}

		// 确保有足够的字段
		if len(parts) < 3 {
			fmt.Printf("Worker %d (文件 %s): 行数据字段不足，跳过: %s\n", workerID, filePath, line)
			continue
		}

		// 创建上传数据结构
		uploadData := UploadData{
			Dyid:      parts[0],
			Uid:       parts[1],
			Secuid:    parts[2],
			Pid:       parts[3],
			CommentId: parts[4],
			Id1:       parts[5],
			Id2:       parts[6],
			Id3:       parts[7],
			Id4:       parts[8],
			Id5:       parts[9],
		}

		// 上传数据
		if err := uploadDataToServer(uploadData); err != nil {
			fmt.Printf("Worker %d (文件 %s): 上传失败: %v\n", workerID, filePath, err)
		}

		// 添加短暂延迟避免服务器过载
		//time.Sleep(10 * time.Millisecond)
	}
}