enhance(report):导出用户抄表模板完成，提取公共生成器类型。

controller/end_user.go

@@ -9,6 +9,7 @@ import (
 	"strconv"
 
 	"github.com/gin-gonic/gin"
+	"github.com/samber/lo"
 )
 
 func InitializeEndUserController(router *gin.Engine) {
@@ -52,12 +53,28 @@ func downloadEndUserRegisterTemplate(c *gin.Context) {
 		result.NotFound(err.Error())
 		return
 	}
-	gen := excel.NewMeterPVExcelTemplateGenerator()
+	meterType, err := service.ReportService.RetreiveParkEndUserMeterType(requestReportId)
-	defer gen.Close()
+	if err != nil {
-	gen.WriteMeterData(users)
+		result.Error(http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	if meterType == -1 {
+		result.NotFound("未能确定用户表计类型。")
+		return
+	}
+
 	c.Status(http.StatusOK)
 	c.Header("Content-Type", "application/octet-stream")
 	c.Header("Content-Transfer-Encoding", "binary")
 	c.Header("Content-Disposition", "attachment; filename=抄表记录.xslx")
+
+	gen := lo.Ternary[excel.ExcelTemplateGenerator](
+		meterType == 0,
+		excel.NewMeterNonPVExcelTemplateGenerator(),
+		excel.NewMeterPVExcelTemplateGenerator(),
+	)
+	defer gen.Close()
+	gen.WriteMeterData(users)
 	gen.WriteTo(c.Writer)
 }

excel/abstract.go

@@ -1,6 +1,7 @@
 package excel
 
 import (
+	"electricity_bill_calc/model"
 	"electricity_bill_calc/tools"
 	"encoding/json"
 	"fmt"
@@ -14,6 +15,12 @@ import (
 	"github.com/xuri/excelize/v2"
 )
 
+type ExcelTemplateGenerator interface {
+	Close()
+	WriteTo(w io.Writer) (int64, error)
+	WriteMeterData(meters []model.EndUserDetail) error
+}
+
 type ColumnRecognizer struct {
 	Pattern    []string
 	Tag        string

excel/meter_non_pv_template.go

@@ -0,0 +1,90 @@
+package excel
+
+import (
+	"electricity_bill_calc/model"
+	"io"
+
+	"github.com/xuri/excelize/v2"
+)
+
+type MeterNonPVExcelTemplateGenerator struct {
+	file *excelize.File
+}
+
+// 生成峰谷计量抄表Excel模板
+func NewMeterNonPVExcelTemplateGenerator() *MeterNonPVExcelTemplateGenerator {
+	return &MeterNonPVExcelTemplateGenerator{
+		file: excelize.NewFile(),
+	}
+}
+
+func (MeterNonPVExcelTemplateGenerator) titles() []interface{} {
+	return []interface{}{
+		"序号",
+		"用户名称",
+		"户址",
+		"电表编号",
+		"倍率",
+		"上期表底（总）",
+		"本期表底（总）",
+		"退补电量（总）",
+	}
+}
+
+func (t *MeterNonPVExcelTemplateGenerator) Close() {
+	t.file.Close()
+}
+
+func (t MeterNonPVExcelTemplateGenerator) WriteTo(w io.Writer) (int64, error) {
+	return t.file.WriteTo(w)
+}
+
+func (t *MeterNonPVExcelTemplateGenerator) WriteMeterData(meters []model.EndUserDetail) error {
+	defaultSheet := t.file.GetSheetName(0)
+	stream, err := t.file.NewStreamWriter(defaultSheet)
+	if err != nil {
+		return err
+	}
+	firstCell, err := excelize.CoordinatesToCellName(1, 1)
+	if err != nil {
+		return err
+	}
+	stream.SetColWidth(2, 4, 20)
+	stream.SetColWidth(6, 8, 15)
+	stream.SetRow(firstCell, t.titles(), excelize.RowOpts{Height: 20})
+
+	for index, meter := range meters {
+		firstCell, err := excelize.CoordinatesToCellName(1, index+2)
+		if err != nil {
+			return err
+		}
+		customerName := ""
+		if meter.CustomerName != nil {
+			customerName = *meter.CustomerName
+		}
+		customerAddress := ""
+		if meter.Address != nil {
+			customerAddress = *meter.Address
+		}
+		if err = stream.SetRow(
+			firstCell,
+			[]interface{}{
+				meter.Seq,
+				customerName,
+				customerAddress,
+				meter.MeterId,
+				meter.Ratio,
+				meter.LastPeriodOverall,
+				nil,
+				nil,
+			},
+			excelize.RowOpts{Height: 15},
+		); err != nil {
+			return err
+		}
+	}
+	if err = stream.Flush(); err != nil {
+		return err
+	}
+	return nil
+}

service/report.go

@@ -342,3 +342,20 @@ func (_ReportService) ProgressReportWillDilutedFee(report model.Report) (err err
 	_, err = global.DBConn.ID(report.Id).Cols("step_state").Update(report)
 	return
 }
+
+func (_ReportService) RetreiveParkEndUserMeterType(reportId string) (int, error) {
+	var types = make([]int, 0)
+	err := global.DBConn.
+		Table("park").Alias("p").
+		Join("INNER", []string{"report", "r"}, "r.park_id=p.id").
+		Where(builder.Eq{"r.id": reportId}).
+		Select("p.meter_04kv_type").
+		Find(&types)
+	if err != nil {
+		return -1, err
+	}
+	if len(types) == 0 {
+		return -1, nil
+	}
+	return types[0], nil
+}