ListWeighingBatches

internal/infra/repository/pig_batch_repository.go

@@ -1,6 +1,8 @@
 package repository
 
 import (
+	"time"
+
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
 	"gorm.io/gorm"
 )
@@ -17,6 +19,17 @@ type PigBatchRepository interface {
 	DeletePigBatch(id uint) (int64, error)
 	DeletePigBatchTx(tx *gorm.DB, id uint) (int64, error)
 	ListPigBatches(isActive *bool) ([]*models.PigBatch, error)
+
+	// ListWeighingBatches 支持分页和过滤的批次称重列表查询
+	ListWeighingBatches(opts WeighingBatchListOptions, page, pageSize int) ([]models.WeighingBatch, int64, error)
+}
+
+// WeighingBatchListOptions 定义了查询批次称重记录时的可选参数
+type WeighingBatchListOptions struct {
+	PigBatchID *uint
+	StartTime  *time.Time // 基于 weighing_time 字段
+	EndTime    *time.Time // 基于 weighing_time 字段
+	OrderBy    string     // 例如 "weighing_time asc"
 }
 
 // gormPigBatchRepository 是 PigBatchRepository 的 GORM 实现
@@ -100,3 +113,40 @@ func (r *gormPigBatchRepository) GetPigBatchByIDTx(tx *gorm.DB, id uint) (*model
 	}
 	return &batch, nil
 }
+
+// ListWeighingBatches 实现了分页和过滤查询批次称重记录的功能
+func (r *gormPigBatchRepository) ListWeighingBatches(opts WeighingBatchListOptions, page, pageSize int) ([]models.WeighingBatch, int64, error) {
+	if page <= 0 || pageSize <= 0 {
+		return nil, 0, ErrInvalidPagination
+	}
+
+	var results []models.WeighingBatch
+	var total int64
+
+	query := r.db.Model(&models.WeighingBatch{})
+
+	if opts.PigBatchID != nil {
+		query = query.Where("pig_batch_id = ?", *opts.PigBatchID)
+	}
+	if opts.StartTime != nil {
+		query = query.Where("weighing_time >= ?", *opts.StartTime)
+	}
+	if opts.EndTime != nil {
+		query = query.Where("weighing_time <= ?", *opts.EndTime)
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	orderBy := "weighing_time DESC"
+	if opts.OrderBy != "" {
+		orderBy = opts.OrderBy
+	}
+	query = query.Order(orderBy)
+
+	offset := (page - 1) * pageSize
+	err := query.Limit(pageSize).Offset(offset).Find(&results).Error
+
+	return results, total, err
+}