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()
-	defer gen.Close()
-	gen.WriteMeterData(users)
+	meterType, err := service.ReportService.RetreiveParkEndUserMeterType(requestReportId)
+	if err != nil {
+		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)
 }