Move delete user to service (#22478)

Move delete user to service

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Jason Song <i@wolfogre.com>

models/db/context.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"database/sql"
 
+	"xorm.io/builder"
 	"xorm.io/xorm"
 	"xorm.io/xorm/schemas"
 )
@@ -183,6 +184,31 @@ func DeleteByBean(ctx context.Context, bean interface{}) (int64, error) {
 	return GetEngine(ctx).Delete(bean)
 }
 
+// DeleteByID deletes the given bean with the given ID
+func DeleteByID(ctx context.Context, id int64, bean interface{}) (int64, error) {
+	return GetEngine(ctx).ID(id).NoAutoTime().Delete(bean)
+}
+
+// FindIDs finds the IDs for the given table name satisfying the given condition
+// By passing a different value than "id" for "idCol", you can query for foreign IDs, i.e. the repo IDs which satisfy the condition
+func FindIDs(ctx context.Context, tableName, idCol string, cond builder.Cond) ([]int64, error) {
+	ids := make([]int64, 0, 10)
+	if err := GetEngine(ctx).Table(tableName).
+		Cols(idCol).
+		Where(cond).
+		Find(&ids); err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
+// DecrByIDs decreases the given column for entities of the "bean" type with one of the given ids by one
+// Timestamps of the entities won't be updated
+func DecrByIDs(ctx context.Context, ids []int64, decrCol string, bean interface{}) error {
+	_, err := GetEngine(ctx).Decr(decrCol).In("id", ids).NoAutoCondition().NoAutoTime().Update(bean)
+	return err
+}
+
 // DeleteBeans deletes all given beans, beans should contain delete conditions.
 func DeleteBeans(ctx context.Context, beans ...interface{}) (err error) {
 	e := GetEngine(ctx)