package order

import "backend/internal/model"

// BatchDeleteResult 批量删除结果 // Logan.Li
type BatchDeleteResult struct {
	Deleted    int    `json:"deleted"`
	Skipped    int    `json:"skipped"`
	Failed     int    `json:"failed"`
	SkippedIDs []uint `json:"skipped_ids,omitempty"`
}

// BatchDelete 批量删除订单：已支付(paid)为财务凭证默认跳过，其余状态可删 // Logan.Li
func (s *OrderService) BatchDelete(ids []uint) (*BatchDeleteResult, error) {
	result := &BatchDeleteResult{}
	seen := map[uint]struct{}{}
	for _, id := range ids {
		if id == 0 {
			continue
		}
		if _, ok := seen[id]; ok {
			continue
		}
		seen[id] = struct{}{}

		var order model.Order
		if err := s.db.First(&order, id).Error; err != nil {
			result.Failed++
			continue
		}
		if order.Status == "paid" {
			result.Skipped++
			result.SkippedIDs = append(result.SkippedIDs, id)
			continue
		}
		if err := s.db.Delete(&model.Order{}, id).Error; err != nil {
			result.Failed++
			continue
		}
		result.Deleted++
	}
	return result, nil
}