ListPigSickLogs

internal/infra/repository/pig_sick_repository.go

@@ -2,11 +2,24 @@ package repository
 
 import (
 	"errors"
+	"time"
 
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
 	"gorm.io/gorm"
 )
 
+// PigSickLogListOptions 定义了查询病猪日志时的可选参数
+type PigSickLogListOptions struct {
+	PigBatchID        *uint
+	PenID             *uint
+	Reason            *models.PigBatchSickPigReasonType
+	TreatmentLocation *models.PigBatchSickPigTreatmentLocation
+	OperatorID        *uint
+	StartTime         *time.Time // 基于 happened_at 字段
+	EndTime           *time.Time // 基于 happened_at 字段
+	OrderBy           string     // 例如 "happened_at desc"
+}
+
 // PigSickLogRepository 定义了与病猪日志模型相关的数据库操作接口。
 type PigSickLogRepository interface {
 	// CreatePigSickLog 创建一条新的病猪日志记录
@@ -15,6 +28,9 @@ type PigSickLogRepository interface {
 
 	// GetLastLogByBatchTx 在事务中获取指定批次和猪栏的最新一条 PigSickLog 记录
 	GetLastLogByBatchTx(tx *gorm.DB, batchID uint) (*models.PigSickLog, error)
+
+	// ListPigSickLogs 支持分页和过滤的病猪日志列表查询
+	ListPigSickLogs(opts PigSickLogListOptions, page, pageSize int) ([]models.PigSickLog, int64, error)
 }
 
 // gormPigSickLogRepository 是 PigSickLogRepository 接口的 GORM 实现。
@@ -51,3 +67,52 @@ func (r *gormPigSickLogRepository) GetLastLogByBatchTx(tx *gorm.DB, batchID uint
 	}
 	return &lastLog, nil
 }
+
+// ListPigSickLogs 实现了分页和过滤查询病猪日志的功能
+func (r *gormPigSickLogRepository) ListPigSickLogs(opts PigSickLogListOptions, page, pageSize int) ([]models.PigSickLog, int64, error) {
+	if page <= 0 || pageSize <= 0 {
+		return nil, 0, ErrInvalidPagination
+	}
+
+	var results []models.PigSickLog
+	var total int64
+
+	query := r.db.Model(&models.PigSickLog{})
+
+	if opts.PigBatchID != nil {
+		query = query.Where("pig_batch_id = ?", *opts.PigBatchID)
+	}
+	if opts.PenID != nil {
+		query = query.Where("pen_id = ?", *opts.PenID)
+	}
+	if opts.Reason != nil {
+		query = query.Where("reason = ?", *opts.Reason)
+	}
+	if opts.TreatmentLocation != nil {
+		query = query.Where("treatment_location = ?", *opts.TreatmentLocation)
+	}
+	if opts.OperatorID != nil {
+		query = query.Where("operator_id = ?", *opts.OperatorID)
+	}
+	if opts.StartTime != nil {
+		query = query.Where("happened_at >= ?", *opts.StartTime)
+	}
+	if opts.EndTime != nil {
+		query = query.Where("happened_at <= ?", *opts.EndTime)
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	orderBy := "happened_at 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
+}