feat: add send_stats table

service/statistic_service/statistic.go

@@ -2,9 +2,12 @@ package statistic_service
 
 import (
 	"message-nest/models"
+	"strconv"
 )
 
 type StatisticService struct {
+	TaskID string
+	Days   int
 }
 
 func (sw *StatisticService) GetStatisticData() (models.StatisticData, error) {
@@ -25,3 +28,27 @@ func (sw *StatisticService) GetTrendStatisticData() (models.TrendStatisticData,
 func (sw *StatisticService) GetChannelStatisticData() (models.ChannelStatisticData, error) {
 	return models.GetChannelStatisticData()
 }
+
+// GetSendStatsData 获取发送统计数据（基于 send_stats 表）
+func (sw *StatisticService) GetSendStatsData() (models.SendStatsData, error) {
+	days := sw.Days
+	if days <= 0 {
+		days = 30 // 默认30天
+	}
+	return models.GetSendStatsData(days)
+}
+
+// GetSendStatsByTask 获取指定任务的发送统计数据
+func (sw *StatisticService) GetSendStatsByTask() (models.SendStatsData, error) {
+	days := sw.Days
+	if days <= 0 {
+		days = 30 // 默认30天
+	}
+	
+	taskID, err := strconv.ParseUint(sw.TaskID, 10, 64)
+	if err != nil {
+		return models.SendStatsData{}, err
+	}
+	
+	return models.GetSendStatsByTask(uint(taskID), days)
+}