package services

import (
	"bytes"
	"encoding/json"
	"eta/eta_crawler/services/alarm_msg"
	"eta/eta_crawler/utils"
	"fmt"
	"github.com/PuerkitoBio/goquery"
	"io"
	"io/ioutil"
	"mime/multipart"
	"net/http"
	"os"
	"strconv"
	"strings"
	"time"
)

// UsdaPsdDataQueryParams 定义了JSON到Go结构体的映射
type UsdaPsdDataQueryParams struct {
	QueryID              int      `json:"queryId"`
	CommodityGroupCode   string   `json:"commodityGroupCode"`
	Commodities          []string `json:"commodities"`
	Attributes           []int    `json:"attributes"`
	Countries            []string `json:"countries"`
	MarketYears          []int    `json:"marketYears"`
	ChkCommoditySummary  bool     `json:"chkCommoditySummary"`
	ChkAttribSummary     bool     `json:"chkAttribSummary"`
	ChkCountrySummary    bool     `json:"chkCountrySummary"`
	CommoditySummaryText string   `json:"commoditySummaryText"`
	AttribSummaryText    string   `json:"attribSummaryText"`
	CountrySummaryText   string   `json:"countrySummaryText"`
	OptionColumn         string   `json:"optionColumn"`
	ChkTopCountry        bool     `json:"chkTopCountry"`
	TopCountryCount      string   `json:"topCountryCount"`
	ChkFileFormat        bool     `json:"chkfileFormat"`
	ChkPrevMonth         bool     `json:"chkPrevMonth"`
	ChkMonthChange       bool     `json:"chkMonthChange"`
	ChkCodes             bool     `json:"chkCodes"`
	ChkYearChange        bool     `json:"chkYearChange"`
	QueryName            string   `json:"queryName"`
	SortOrder            string   `json:"sortOrder"`
	TopCountryState      bool     `json:"topCountryState"`
}

type UsdaPsdData struct {
	TableHeaders []string                 `json:"tableHeaders"`
	QueryResult  []map[string]interface{} `json:"queryResult"`
}

type UsdaPsdDataAttribute struct {
	AttributeId int `json:"attributeId"`
}

// UsdaFasIndex 美国农业部指标数据
type UsdaFasIndex struct {
	ClassifyName       string `description:"指标目录"`
	ParentClassifyName string `description:"父级指标目录"`
	ClassifySort       int    `description:"指标目录排序号"`
	IndexName          string `description:"指标名称"`
	IndexCode          string `description:"指标编码"`
	Unit               string `description:"单位"`
	Sort               int    `description:"排序号"`
	Frequency          string `description:"频度"`
	TerminalCode       string `description:"编码"`
	ExcelDataMap       map[string]string
}

// Meal, Palm Kernel:0813800
// Meal, Peanut:0813200
// Meal, Rapeseed:0813600
// Meal, Soybean:0813100
// Meal, Sunflowerseed:0813500

// Oil, Coconut:4242000
// Oil, Cottonseed:4233000
// Oil, Olive:4235000
// Oil, Palm:4243000
// Oil, Palm Kernel:4244000
// Oil, Peanut:4234000
// Oil, Rapeseed:4239100
// Oil, Soybean:4232000
// Oil, Sunflowerseed:4236000

// Oilseed, Cottonseed:2223000
// Oilseed, Palm Kernel:2232000
// Oilseed, Peanut:2221000
// Oilseed, Rapeseed:2226000
// Oilseed, Soybean:2222000
// Oilseed, Sunflowerseed:2224000
// 美国农业部月度供需平衡表数据
func DownloadUsdaPsdData() (indexList []*UsdaFasIndex, err error) {
	// 从test.json文件中读取json串
	body, err := ioutil.ReadFile("test.json")
	if err != nil {
		return
	}
	// 解析json串
	item := new(UsdaPsdData)
	err = json.Unmarshal(body, &item)
	if err != nil {
		fmt.Println("json.Unmarshal err:" + err.Error())
		return
	}
	indexList, err = handleUsdaFasPsd(item)
	return
	/*defer func() {
		if err != nil {
			msg := "失败提醒" + "downloadUsdaPsdData ErrMsg:" + err.Error()
			fmt.Println("msg:", msg)
			utils.FileLog.Info(msg)
			go alarm_msg.SendAlarmMsg(msg, 3)
		}
	}()
	// 定义请求地址
	attributeUrl := "https://apps.fas.usda.gov/PSDOnlineApi/api/query/GetMultiCommodityAttributes?"
	dataUrl := "https://apps.fas.usda.gov/PSDOnlineApi/api/query/RunQuery"

	var commodities []string
	commodities = append(commodities, "0813800", "0813200", "0813600", "0813100", "0813500", "4242000", "4233000", "4235000", "4243000", "4244000", "4234000", "4239100", "4232000", "4236000", "2223000", "2232000", "2221000", "2226000", "2222000", "2224000")
	//commodities = append(commodities, "0430000")
	commodityCodes := strings.Join(commodities, ",")
	attributeUrl = attributeUrl + "commodityCodes=" + commodityCodes
	// 定义请求参数
	// 获取属性入参
	attributeBody, e := utils.HttpGetNoCookie(attributeUrl)
	if e != nil {
		err = e
		return
	}

	attrList := make([]UsdaPsdDataAttribute, 0)
	err = json.Unmarshal(attributeBody, &attrList)
	if err != nil {
		fmt.Println("json.Unmarshal err:" + err.Error())
		return
	}
	// 解析
	var attributes []int
	for _, v := range attrList {
		// 键值对的值
		attributes = append(attributes, v.AttributeId)
	}

	// 定义请求方法
	//attributes = append(attributes, 4, 20, 28, 57, 81, 84, 86, 88, 113, 130, 192, 125, 176, 178, 184)
	var countries []string
	countries = append(countries, "R00", "ALL")
	var marketYears []int
	marketYears = append(marketYears, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014)
	// {"queryId":0,"commodityGroupCode":null,"commodities":["0430000"],"attributes":[4,20,28,57,81,84,86,88,113,130,192,125,176,178,184],"countries":["R00","ALL"],"marketYears":[2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014],"chkCommoditySummary":false,"chkAttribSummary":false,"chkCountrySummary":false,"commoditySummaryText":"","attribSummaryText":"","countrySummaryText":"","optionColumn":"year","chkTopCountry":false,"topCountryCount":"","chkfileFormat":false,"chkPrevMonth":true,"chkMonthChange":false,"chkCodes":false,"chkYearChange":false,"queryName":"","sortOrder":"Commodity/Attribute/Country","topCountryState":false}
	var req UsdaPsdDataQueryParams
	req.Commodities = commodities
	req.Attributes = attributes
	req.Countries = countries
	req.MarketYears = marketYears
	req.OptionColumn = "year"
	//req.ChkPrevMonth = true
	req.SortOrder = "Commodity/Country/Attribute"

	// 构造httppost请求
	reqBody, _ := json.Marshal(req)
	// 解析返回值

	headerParams := make(map[string]string)
	//headerParams["Cookie"] = "CT6T=312900; SF_cookie_3=68941398"
	//headerParams["User-Agent"] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
	headerParams["Content-Type"] = "application/json"
	body, e := utils.HttpPostNoCookie(dataUrl, string(reqBody), headerParams)
	if e != nil {
		err = e
		return
	}
	item := new(UsdaPsdData)
	err = json.Unmarshal(body, &item)
	if err != nil {
		fmt.Println("json.Unmarshal err:" + err.Error())
		return
	}
	indexList, err = handleUsdaFasPsd(item)*/
	return
}

// 美国农业出库销售数据
func DownloadUsdaFmsData() {
	var err error
	defer func() {
		if err != nil {
			msg := "失败提醒" + "DownloadUsdaFmsData ErrMsg:" + err.Error()
			fmt.Println("msg:", msg)
			utils.FileLog.Info(msg)
			go alarm_msg.SendAlarmMsg(msg, 3)
		}
	}()
	downloadFile := "downloaded_excel.xlsx"
	//请求首页，获取入参
	dataUrl := "https://apps.fas.usda.gov/esrquery/esrq.aspx"
	body1, err := utils.HttpGetNoCookie(dataUrl)
	if err != nil {
		return
	}
	htmlString := string(body1)
	// 解析返回值，截取htmlinput标签，input标签里，id=“__EVENTVALIDATION”的input标签里的值
	// 使用goquery读取HTML字符串
	doc, err := goquery.NewDocumentFromReader(strings.NewReader(htmlString))
	if err != nil {
		return
	}
	stateValue := doc.Find("input#__VIEWSTATE").AttrOr("value", "")
	stateEneratorValue := doc.Find("input#__VIEWSTATEGENERATOR").AttrOr("value", "")
	// 查询并获取input标签的值
	validValue := doc.Find("input#__EVENTVALIDATION").AttrOr("value", "")

	var body bytes.Buffer
	multipartWriter := multipart.NewWriter(&body)

	// 添加表单字段（如果需要的话）
	if err = multipartWriter.WriteField("__EVENTTARGET", ""); err != nil {
		err = fmt.Errorf("set __EVENTTARGET, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("__EVENTARGUMENT", ""); err != nil {
		err = fmt.Errorf("set __EVENTARGUMENT, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("__LASTFOCUS", ""); err != nil {
		err = fmt.Errorf("set __LASTFOCUS, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("__VIEWSTATE", stateValue); err != nil {
		err = fmt.Errorf("set __VIEWSTATE, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("__VIEWSTATEGENERATOR", stateEneratorValue); err != nil {
		err = fmt.Errorf("set __VIEWSTATEGENERATOR, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("__EVENTVALIDATION", validValue); err != nil {
		err = fmt.Errorf("set __EVENTVALIDATION, Err:%s", err)
		return
	}
	//整理需要下载的品种ID
	//Soybeans：801，Soybean cake & meal：901，Soybean Oil：902
	CommodityIds := []string{"801", "901", "902"}
	for _, v := range CommodityIds {
		if err = multipartWriter.WriteField("ctl00$MainContent$lbCommodity", v); err != nil {
			err = fmt.Errorf("set ctl00$MainContent$lbCommodity, Err:%s", err)
			return
		}
	}
	startDate := "08/22/2019"
	endDate := "08/22/2024"
	if err = multipartWriter.WriteField("ctl00$MainContent$lbCountry", "0:0"); err != nil {
		err = fmt.Errorf("set ctl00$MainContent$lbCountry, Err:%s", err)
		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$ddlReportFormat", "10"); err != nil {

		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$rblOutputType", "2"); err != nil {
		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$tbStartDate", startDate); err != nil {
		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$tbEndDate", endDate); err != nil {
		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$rblColumnSelection", "regular"); err != nil {
		return
	}
	if err = multipartWriter.WriteField("ctl00$MainContent$btnSubmit", "Submit"); err != nil {
		return
	}
	// 注意：如果接口需要文件上传，这里应该使用multipartWriter.CreateFormFile来添加文件

	// 关闭multipart writer以添加最后的边界
	if err = multipartWriter.Close(); err != nil {
		err = fmt.Errorf("close multipart writer, Err:%s", err)
		return
	}

	// 构造请求
	req, err := http.NewRequest("POST", dataUrl, &body)
	if err != nil {
		err = fmt.Errorf("create request, Err:%s", err)
		return
	}

	// 设置请求头
	req.Header.Set("Content-Type", multipartWriter.FormDataContentType())

	// 发送请求
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		err = fmt.Errorf("send request, Err:%s", err)
		return
	}
	defer resp.Body.Close()

	// 检查响应状态码
	if resp.StatusCode != http.StatusOK {
		err = fmt.Errorf("unexpected status code: %d", resp.StatusCode)
		return
	}

	// 读取响应体
	out, err := os.Create(downloadFile)
	if err != nil {
		return
	}
	defer out.Close()

	// 将响应体写入到文件
	_, err = io.Copy(out, resp.Body)
	if err != nil {
		return
	}

	fmt.Println("Excel file downloaded successfully")
	return
}

func handleUsdaFasPsd(item *UsdaPsdData) (indexList []*UsdaFasIndex, err error) {
	// 解析
	headerSlice := make([]string, 0)
	for index, v := range item.TableHeaders {
		// 键值对的值
		fmt.Println("key:", index, "value:", v)
		if !strings.Contains(v, "/") && !strings.Contains(v, " ") {
			v = strings.ToLower(v)
		}
		if v == "Unit Description" {
			v = "unit Description"
		}
		headerSlice = append(headerSlice, v)
	}
	// 解析
	// 遍历行读取
	indexList = make([]*UsdaFasIndex, 0)
	sort := 0
	// 指标名称
	indexMap := make(map[string]*UsdaFasIndex)
	// 键值对的值
	commodityRow := ""
	countriesRow := ""
	attributesRow := ""
	errMsg := ""
	for _, row := range item.QueryResult {
		unitK := headerSlice[len(headerSlice)-1]
		unit := row[unitK].(string)
		// unit 去掉左右两边的括号，去掉中间的空格
		unit = strings.Replace(unit, " ", "", -1)
		unit = strings.Trim(unit, "()")
		for _, k := range headerSlice {
			col, ok := row[k]
			if !ok || col == nil {
				continue
			}
			if k == "commodity" {
				commodityRow = col.(string)
			} else if k == "country" {
				countriesRow = col.(string)
			} else if k == "attribute" {
				attributesRow = col.(string)
			} else if k == "unit Description" {
				// unit = col.(string)
			} else {
				//数据列
				year, _ := strconv.Atoi(strings.Split(k, "/")[0])
				month := 0
				indexName := ""
				classifyName := ""
				classifySort := 0
				inCode := ""
				fre := "年度"
				lastStr := "Yearly"
				// year年度的最后一天日期
				dateT := time.Date(year, time.December, 31, 0, 0, 0, 0, time.UTC)
				if strings.Contains(k, "(") {
					fre = "月度"
					lastStr = "Monthly"
					// 截取括号中间的月度数据
					monthStr := strings.Split(k, "(")[1]
					monthStr = strings.Split(monthStr, ")")[0]
					// 将Jul英文月份前缀转成数字月份
					monthT, e := time.ParseInLocation("Jan", monthStr, time.Local)
					if e != nil {
						errMsg += fmt.Sprintf("月份转换错误:%s%s\n", monthStr, e.Error())
						continue
					}
					month = int(monthT.Month())
					// 将year和month拼接成日期，该月的最后一天日期
					dateT = time.Date(year, time.Month(month), 31, 0, 0, 0, 0, time.UTC)
				}
				date := dateT.Format("2006-01-02")
				// 封装成指标数据
				if commodityRow != "" && countriesRow != "" && attributesRow != "" {
					indexName = commodityRow + ": " + countriesRow + ": " + attributesRow + ": " + lastStr
				} else {
					fmt.Println("commodityRow:", commodityRow, "countriesRow:", countriesRow, "attributesRow:", attributesRow)
					errMsg += fmt.Sprintf("指标名称为空 commodityRow:%s,countriesRow:%s,attributesRow:%s\n", commodityRow, countriesRow, attributesRow)
					continue
				}

				inCode = "usda" + utils.GetFirstLetter(indexName)
				indexItem, okIndex := indexMap[indexName]
				// 首字母大写
				classifyName = commodityRow
				if !okIndex {
					// 新增指标
					indexItem = new(UsdaFasIndex)
					indexItem.IndexName = indexName
					indexItem.ClassifyName = classifyName
					indexItem.ParentClassifyName = "月度供需"
					indexItem.ClassifySort = classifySort
					indexItem.IndexCode = inCode
					indexItem.Frequency = fre
					indexItem.Sort = sort
					indexItem.Unit = unit
					indexItem.ExcelDataMap = make(map[string]string)
					sort++
				}
				val := col.(float64)
				indexItem.ExcelDataMap[date] = fmt.Sprintf("%.4f", val)
				indexMap[indexName] = indexItem
				continue
			}
		}

	}

	for _, v := range indexMap {
		fmt.Printf("IndexName: %s \n", v.IndexName)
		fmt.Printf("IndexCode: %s \n", v.IndexCode)
		indexList = append(indexList, v)
		if len(indexList) > 500 {
			err = addUsdaFasPsdData(indexList)
			if err != nil {
				return
			}
			indexList = []*UsdaFasIndex{}
		}
	}
	err = addUsdaFasPsdData(indexList)
	if err != nil {
		return
	}
	return
}

func addUsdaFasPsdData(indexList []*UsdaFasIndex) (err error) {
	sheetName := "月度供需"
	if len(indexList) > 0 {
		params := make(map[string]interface{})
		params["List"] = indexList
		params["TerminalCode"] = ""
		result, e := utils.PostEdbLib(params, "usda_fas/handle/excel_data")
		if e != nil {
			err = fmt.Errorf("sheet ：%s PostEdbLib err: %s", sheetName, e.Error())
			b, _ := json.Marshal(params)
			utils.FileLog.Info(fmt.Sprintf("sheet ：%s PostEdbLib err: %s, params: %s", sheetName, e.Error(), string(b)))
			return
		}
		resp := new(utils.BaseEdbLibResponse)
		if e := json.Unmarshal(result, &resp); e != nil {
			err = fmt.Errorf("sheet ：%s json.Unmarshal err: %s", sheetName, e)
			utils.FileLog.Info(fmt.Sprintf("sheet ：%s json.Unmarshal err: %s", sheetName, e))
			return
		}
		if resp.Ret != 200 {
			err = fmt.Errorf("sheet ：%s Msg: %s, ErrMsg: %s", sheetName, resp.Msg, resp.ErrMsg)
			utils.FileLog.Info(fmt.Sprintf("sheet ：%s Msg: %s, ErrMsg: %s", sheetName, resp.Msg, resp.ErrMsg))
			return
		}
	}
	return
}