package service

import (
	"fmt"
	"github.com/xuri/excelize/v2"
	"strconv"
	"time"
	"wms/models"
	"wms/pkg/logx"
	"wms/request"
)

type MonthFormsService struct{}

func NewMonthFormsService() *MonthFormsService {
	return &MonthFormsService{}
}

func (slf *MonthFormsService) Query(params request.GetMonthStats) (result []*models.MonthStats, err error) {
	search := slf.BuildSearch(params)
	search = search.SetPage(params.Page, params.PageSize)
	return search.FindNotTotal()
}

func (slf *MonthFormsService) BuildSearch(params request.GetMonthStats) (search *models.MonthStatsSearch) {
	search = models.NewMonthStatsSearch().SetKeyword(params.Keyword).SetDate(params.Date)
	return search
}

func (slf *MonthFormsService) Count(params request.GetMonthStats) (total int64, err error) {
	search := slf.BuildSearch(params)
	return search.Count()
}

func (slf *MonthFormsService) FetchAll(params request.GetMonthStats) (list []*models.MonthStats, err error) {
	total, err := slf.Count(params)
	if err != nil {
		return nil, err
	}
	list = make([]*models.MonthStats, 0, total)
	params.PageSize = 500
	page := 1
	for {
		params.Page = page
		data, err := slf.Query(params)
		if err != nil {
			return nil, err
		}
		if len(data) == 0 {
			break
		}
		list = append(list, data...)
		page++
	}
	return
}

func (slf *MonthFormsService) Export(dataList []*models.MonthStats) (filename string, err error) {
	// 创建一个新的 Excel 文件
	f := excelize.NewFile()

	if err != nil {
		logx.Errorf("NewSheet err:%v", err)
		return "", err
	}

	// 设置表头
	f.SetCellValue("Sheet1", "A1", "产品编码")
	f.SetCellValue("Sheet1", "B1", "产品名称")
	f.SetCellValue("Sheet1", "C1", "期初库存")
	f.MergeCell("Sheet1", "C1", "F1") // 合并单元格
	f.SetCellValue("Sheet1", "G1", "本月入库")
	f.MergeCell("Sheet1", "G1", "J1") // 合并单元格
	f.SetCellValue("Sheet1", "K1", "本月出库")
	f.MergeCell("Sheet1", "K1", "N1") // 合并单元格
	f.SetCellValue("Sheet1", "O1", "期末库存")
	f.MergeCell("Sheet1", "O1", "R1") // 合并单元格

	unitData := []string{"件", "匹", "米", "重量"}
	for i, header := range unitData {
		cell := getColumnAlphabet(i+3) + "2"
		f.SetCellValue("Sheet1", cell, header)
	}
	for i, header := range unitData {
		cell := getColumnAlphabet(i+7) + "2"
		f.SetCellValue("Sheet1", cell, header)
	}
	for i, header := range unitData {
		cell := getColumnAlphabet(i+11) + "2"
		f.SetCellValue("Sheet1", cell, header)
	}
	for i, header := range unitData {
		cell := getColumnAlphabet(i+15) + "2"
		f.SetCellValue("Sheet1", cell, header)
	}

	// 设置表头样式
	style := &excelize.Style{
		Border: nil,
		Fill: excelize.Fill{
			Type:    "pattern",
			Pattern: 1,
			Shading: 0,
		},
		Font: &excelize.Font{
			Bold: true,
		},
		Alignment: &excelize.Alignment{
			Horizontal: "center",
		},
	}
	titleStyle, err := f.NewStyle(style)
	if err != nil {
		fmt.Println(err)
		return
	}
	f.SetCellStyle("Sheet1", "A1", "R2", titleStyle)
	// 设置列宽
	f.SetColWidth("Sheet1", "A", "B", 30)
	f.SetColWidth("Sheet1", "C", "R", 15)

	for i, v := range dataList {
		column := strconv.Itoa(i + 3)
		f.SetCellValue("Sheet1", "A"+column, v.ProductId)
		f.SetCellValue("Sheet1", "B"+column, v.ProductName)
		f.SetCellValue("Sheet1", "C"+column, v.BeginAmount)
		for _, v := range v.BeginMoreUnitsArr {
			switch v.Unit {
			case "件":
				f.SetCellValue("Sheet1", "D"+column, v.Amount)
			case "匹":
				f.SetCellValue("Sheet1", "E"+column, v.Amount)
			case "米":
				f.SetCellValue("Sheet1", "F"+column, v.Amount)
			}
		}

		f.SetCellValue("Sheet1", "G"+column, v.InputAmount)
		for _, v := range v.InputMoreUnitsArr {
			switch v.Unit {
			case "件":
				f.SetCellValue("Sheet1", "H"+column, v.Amount)
			case "匹":
				f.SetCellValue("Sheet1", "I"+column, v.Amount)
			case "米":
				f.SetCellValue("Sheet1", "J"+column, v.Amount)
			}
		}

		f.SetCellValue("Sheet1", "K"+column, v.OutputAmount)
		for _, v := range v.OutputMoreUnitsArr {
			switch v.Unit {
			case "件":
				f.SetCellValue("Sheet1", "L"+column, v.Amount)
			case "匹":
				f.SetCellValue("Sheet1", "M"+column, v.Amount)
			case "米":
				f.SetCellValue("Sheet1", "N"+column, v.Amount)
			}
		}

		f.SetCellValue("Sheet1", "O"+column, v.EndAmount)
		for _, v := range v.EndMoreUnitsArr {
			switch v.Unit {
			case "件":
				f.SetCellValue("Sheet1", "P"+column, v.Amount)
			case "匹":
				f.SetCellValue("Sheet1", "Q"+column, v.Amount)
			case "米":
				f.SetCellValue("Sheet1", "R"+column, v.Amount)
			}
		}
	}

	fileName := fmt.Sprintf("月度统计报表%s.xlsx", time.Now().Format("2006-01-02-1504"))
	if err := f.SaveAs(fileName); err != nil {
		return fileName, err
	}

	return fileName, nil
}