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63 lines
1.6 KiB
63 lines
1.6 KiB
package database
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import (
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"fmt"
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"reflect"
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"go.mongodb.org/mongo-driver/bson/primitive"
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"go.mongodb.org/mongo-driver/mongo/options"
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"github.com/mainnika/mongox-go-driver/v2/mongox/base"
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"github.com/mainnika/mongox-go-driver/v2/mongox/query"
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)
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// DeleteArray removes documents list from a database by their ids
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func (d *Database) DeleteArray(target interface{}, filters ...interface{}) (err error) {
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targetV := reflect.ValueOf(target)
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targetT := targetV.Type()
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targetK := targetV.Kind()
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if targetK != reflect.Ptr {
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panic(fmt.Errorf("target is not a ptr"))
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}
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targetSliceV := targetV.Elem()
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targetSliceT := targetT.Elem()
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if targetSliceT.Kind() != reflect.Slice {
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panic(fmt.Errorf("target should be a ptr to a slice"))
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}
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targetSliceElemT := targetSliceT.Elem()
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if targetSliceElemT.Kind() != reflect.Ptr {
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panic(fmt.Errorf("target slice should contain ptrs"))
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}
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zeroElem := reflect.Zero(targetSliceElemT)
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targetLen := targetSliceV.Len()
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collection := d.GetCollectionOf(zeroElem.Interface())
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opts := options.Delete()
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ids := primitive.A{}
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composed := query.Compose(filters...)
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for i := 0; i < targetLen; i++ {
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elem := targetSliceV.Index(i)
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ids = append(ids, base.GetID(elem.Interface()))
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}
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if len(ids) == 0 {
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return fmt.Errorf("can't delete zero elements")
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}
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composed.And(primitive.M{"_id": primitive.M{"$in": ids}})
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result, err := collection.DeleteMany(d.Context(), composed.M(), opts)
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if err != nil {
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return
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}
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if result.DeletedCount != int64(targetLen) {
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err = fmt.Errorf("can't verify delete result: removed count mismatch %d != %d", result.DeletedCount, targetLen)
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}
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return
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}
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