fix: 修复任务详情页每日/总限制判断逻辑

- 当任务已完成时，检查每日限制(DailyLimit)和总限制(TotalLimit)
- 如果今日领取次数 < DailyLimit 且 总领取次数 < TotalLimit，允许再次领取
- 修复了用户今天完成任务后，即使未达限制也显示'已完成'的问题

apis/daytask/home.go

@@ -5,6 +5,7 @@ import (
 	"app/commons/services"
 	"fmt"
 	"strings"
+	"time"
 
 	"github.com/gin-gonic/gin"
 )
@@ -306,7 +307,45 @@ func (s *Server) TaskDetail(c *gin.Context) {
 		userTask := &entity.DtUserTask{}
 		if err := db.Where("user_id = ? AND task_id = ?", userId, taskId).
 			Order("id DESC").First(userTask).Error; err == nil {
-			apply = userTask
+
+			// 如果任务已完成，需要检查是否可以再次领取
+			if userTask.Status == entity.UserTaskStatusCompleted {
+				canReClaim := true
+				today := time.Now().Format("2006-01-02")
+
+				// 检查每日限制
+				if task.DailyLimit > 0 {
+					var todayCount int64
+					db.Model(&entity.DtUserTask{}).
+						Where("user_id = ? AND task_id = ? AND DATE(FROM_UNIXTIME(created_at)) = ?",
+							userId, taskId, today).
+						Count(&todayCount)
+					if int(todayCount) >= task.DailyLimit {
+						canReClaim = false
+					}
+				}
+
+				// 检查总限制
+				if canReClaim && task.TotalLimit > 0 {
+					var totalCount int64
+					db.Model(&entity.DtUserTask{}).
+						Where("user_id = ? AND task_id = ? AND status != ?",
+							userId, taskId, entity.UserTaskStatusAbandoned).
+						Count(&totalCount)
+					if int(totalCount) >= task.TotalLimit {
+						canReClaim = false
+					}
+				}
+
+				if canReClaim {
+					apply = nil
+				} else {
+					apply = userTask
+				}
+			} else {
+				// 其他状态（进行中、待审核等）直接返回
+				apply = userTask
+			}
 		}
 	}