package excel

import (
	"electricity_bill_calc/logger"
	"electricity_bill_calc/model"
	"fmt"
	"io"

	"github.com/samber/lo"
	"github.com/xuri/excelize/v2"
	"go.uber.org/zap"
)

var meterArchiveRecognizers = []*ColumnRecognizer{
	{Pattern: [][]string{{"表号"}}, Tag: "code", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"表址", "地址", "户址"}}, Tag: "address", MatchIndex: -1},
	{Pattern: [][]string{{"类型"}}, Tag: "meterType", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"建筑"}}, Tag: "building", MatchIndex: -1},
	{Pattern: [][]string{{"楼层"}}, Tag: "onFloor", MatchIndex: -1},
	{Pattern: [][]string{{"面积"}}, Tag: "area", MatchIndex: -1},
	{Pattern: [][]string{{"倍率"}}, Tag: "ratio", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"序号"}}, Tag: "seq", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"抄表"}, {"时间", "日期"}}, Tag: "readAt", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"有功", "表底", "底数"}, {"总"}}, Tag: "overall", MatchIndex: -1, MustFill: true},
	{Pattern: [][]string{{"有功", "表底", "底数"}, {"尖"}}, Tag: "critical", MatchIndex: -1},
	{Pattern: [][]string{{"有功", "表底", "底数"}, {"峰"}}, Tag: "peak", MatchIndex: -1},
	{Pattern: [][]string{{"有功", "表底", "底数"}, {"平"}}, Tag: "flat", MatchIndex: -1},
	{Pattern: [][]string{{"有功", "表底", "底数"}, {"谷"}}, Tag: "valley", MatchIndex: -1},
}

func NewMeterArchiveExcelAnalyzer(file io.Reader) (*ExcelAnalyzer[model.MeterImportRow], error) {
	return NewExcelAnalyzer[model.MeterImportRow](file, meterArchiveRecognizers)
}

type MeterArchiveExcelTemplateGenerator struct {
	file *excelize.File
	log  *zap.Logger
}

func NewMeterArchiveExcelTemplateGenerator() *MeterArchiveExcelTemplateGenerator {
	return &MeterArchiveExcelTemplateGenerator{
		file: excelize.NewFile(),
		log:  logger.Named("Excel", "MeterArchive"),
	}
}

func (MeterArchiveExcelTemplateGenerator) titles() *[]interface{} {
	return &[]interface{}{
		"序号",
		"表址",
		"表号",
		"表计类型",
		"倍率",
		"所在建筑",
		"所在楼层",
		"辖盖面积",
		"抄表时间",
		"有功（总）",
		"有功（尖）",
		"有功（峰）",
		"有功（平）",
		"有功（谷）",
	}
}

func (g *MeterArchiveExcelTemplateGenerator) Close() {
	g.file.Close()
}

func (g MeterArchiveExcelTemplateGenerator) WriteTo(w io.Writer) (int64, error) {
	return g.file.WriteTo(w)
}

func (g *MeterArchiveExcelTemplateGenerator) WriteTemplateData(buildings []*model.ParkBuilding) error {
	var err error
	defaultSheet := g.file.GetSheetName(0)
	g.log.Debug("选定默认输出表格", zap.String("sheet", defaultSheet))
	err = g.file.SetColWidth(defaultSheet, "B", "I", 20)
	if err != nil {
		g.log.Error("未能设定长型列宽。", zap.Error(err))
		return fmt.Errorf("未能设定长型列宽，%w", err)
	}
	err = g.file.SetColWidth(defaultSheet, "J", "N", 15)
	if err != nil {
		g.log.Error("未能设定短型列宽。", zap.Error(err))
		return fmt.Errorf("未能设定短型列宽，%w", err)
	}
	err = g.file.SetSheetRow(defaultSheet, "A1", g.titles())
	if err != nil {
		g.log.Error("未能输出模板标题。", zap.Error(err))
		return fmt.Errorf("未能输出模板标题，%w", err)
	}
	err = g.file.SetRowHeight(defaultSheet, 1, 20)
	if err != nil {
		g.log.Error("未能设定标题行高度。", zap.Error(err))
		return fmt.Errorf("未能设定标题行高度，%w", err)
	}

	dateTimeExp := "yyyy-mm-dd hh:mm;@"
	dateTimeColStyle, err := g.file.NewStyle(&excelize.Style{
		CustomNumFmt: &dateTimeExp,
	})
	if err != nil {
		g.log.Error("未能创建日期时间格式。", zap.Error(err))
		return fmt.Errorf("未能创建日期时间格式，%w", err)
	}
	g.file.SetCellStyle(defaultSheet, "I2", "I1048576", dateTimeColStyle)

	numExp := "0.0000;@"
	numColStyle, err := g.file.NewStyle(&excelize.Style{
		CustomNumFmt: &numExp,
	})
	if err != nil {
		g.log.Error("未能创建抄表数字格式。", zap.Error(err))
		return fmt.Errorf("未能创建抄表数字格式，%w", err)
	}
	g.file.SetCellStyle(defaultSheet, "J2", "N1048576", numColStyle)

	meterInstallationTypeValidation := excelize.NewDataValidation(false)
	meterInstallationTypeValidation.SetDropList([]string{"商户表", "公共表", "楼道表"})
	meterInstallationTypeValidation.Sqref = "D2:D1048576"
	err = g.file.AddDataValidation(defaultSheet, meterInstallationTypeValidation)
	if err != nil {
		g.log.Error("未能设定表计类型选择器。", zap.Error(err))
		return fmt.Errorf("未能设定表计类型选择器，%w", err)
	}
	buildingValidation := excelize.NewDataValidation(true)
	buildingNames := lo.Map(buildings, func(b *model.ParkBuilding, _ int) string {
		return b.Name
	})
	buildingValidation.SetDropList(buildingNames)
	buildingValidation.Sqref = "F2:F1048576"
	err = g.file.AddDataValidation(defaultSheet, buildingValidation)
	if err != nil {
		g.log.Error("未能设定所在建筑选择器。", zap.Error(err))
		return fmt.Errorf("未能设定所在建筑选择器，%w", err)
	}
	return nil
}