ListRawMaterialPurchases

internal/infra/repository/raw_material_repository.go

@@ -0,0 +1,73 @@
+package repository
+
+import (
+	"time"
+
+	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
+	"gorm.io/gorm"
+)
+
+// RawMaterialPurchaseListOptions 定义了查询原料采购记录时的可选参数
+type RawMaterialPurchaseListOptions struct {
+	RawMaterialID *uint
+	Supplier      *string
+	StartTime     *time.Time // 基于 purchase_date 字段
+	EndTime       *time.Time // 基于 purchase_date 字段
+	OrderBy       string     // 例如 "purchase_date asc"
+}
+
+// RawMaterialRepository 定义了与原料相关的数据库操作接口
+type RawMaterialRepository interface {
+	// ListRawMaterialPurchases 支持分页和过滤的列表查询
+	ListRawMaterialPurchases(opts RawMaterialPurchaseListOptions, page, pageSize int) ([]models.RawMaterialPurchase, int64, error)
+}
+
+// gormRawMaterialRepository 是 RawMaterialRepository 的 GORM 实现
+type gormRawMaterialRepository struct {
+	db *gorm.DB
+}
+
+// NewGormRawMaterialRepository 创建一个新的 RawMaterialRepository GORM 实现实例
+func NewGormRawMaterialRepository(db *gorm.DB) RawMaterialRepository {
+	return &gormRawMaterialRepository{db: db}
+}
+
+// ListRawMaterialPurchases 实现了分页和过滤查询原料采购记录的功能
+func (r *gormRawMaterialRepository) ListRawMaterialPurchases(opts RawMaterialPurchaseListOptions, page, pageSize int) ([]models.RawMaterialPurchase, int64, error) {
+	if page <= 0 || pageSize <= 0 {
+		return nil, 0, ErrInvalidPagination
+	}
+
+	var results []models.RawMaterialPurchase
+	var total int64
+
+	query := r.db.Model(&models.RawMaterialPurchase{})
+
+	if opts.RawMaterialID != nil {
+		query = query.Where("raw_material_id = ?", *opts.RawMaterialID)
+	}
+	if opts.Supplier != nil {
+		query = query.Where("supplier LIKE ?", "%"+*opts.Supplier+"%")
+	}
+	if opts.StartTime != nil {
+		query = query.Where("purchase_date >= ?", *opts.StartTime)
+	}
+	if opts.EndTime != nil {
+		query = query.Where("purchase_date <= ?", *opts.EndTime)
+	}
+
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	orderBy := "purchase_date DESC"
+	if opts.OrderBy != "" {
+		orderBy = opts.OrderBy
+	}
+	query = query.Order(orderBy).Preload("RawMaterial")
+
+	offset := (page - 1) * pageSize
+	err := query.Limit(pageSize).Offset(offset).Find(&results).Error
+
+	return results, total, err
+}