148 lines
3.7 KiB
Go
148 lines
3.7 KiB
Go
/*
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Copyright 2020 The Qmgo Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package field
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import (
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"fmt"
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"go.mongodb.org/mongo-driver/bson/primitive"
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"reflect"
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"time"
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)
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// CustomFields defines struct of supported custom fields
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type CustomFields struct {
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createAt string
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updateAt string
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id string
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}
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// CustomFieldsHook defines the interface, CustomFields return custom field user want to change
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type CustomFieldsHook interface {
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CustomFields() CustomFieldsBuilder
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}
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// CustomFieldsBuilder defines the interface which user use to set custom fields
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type CustomFieldsBuilder interface {
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SetUpdateAt(fieldName string) CustomFieldsBuilder
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SetCreateAt(fieldName string) CustomFieldsBuilder
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SetId(fieldName string) CustomFieldsBuilder
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}
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// NewCustom creates new Builder which is used to set the custom fields
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func NewCustom() CustomFieldsBuilder {
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return &CustomFields{}
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}
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// SetUpdateAt set the custom UpdateAt field
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func (c *CustomFields) SetUpdateAt(fieldName string) CustomFieldsBuilder {
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c.updateAt = fieldName
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return c
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}
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// SetCreateAt set the custom CreateAt field
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func (c *CustomFields) SetCreateAt(fieldName string) CustomFieldsBuilder {
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c.createAt = fieldName
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return c
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}
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// SetId set the custom Id field
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func (c *CustomFields) SetId(fieldName string) CustomFieldsBuilder {
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c.id = fieldName
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return c
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}
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// CustomCreateTime changes the custom create time
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func (c CustomFields) CustomCreateTime(doc interface{}) {
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if c.createAt == "" {
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return
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}
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fieldName := c.createAt
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setTime(doc, fieldName, false)
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return
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}
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// CustomUpdateTime changes the custom update time
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func (c CustomFields) CustomUpdateTime(doc interface{}) {
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if c.updateAt == "" {
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return
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}
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fieldName := c.updateAt
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setTime(doc, fieldName, true)
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return
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}
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// CustomUpdateTime changes the custom update time
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func (c CustomFields) CustomId(doc interface{}) {
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if c.id == "" {
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return
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}
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fieldName := c.id
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setId(doc, fieldName)
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return
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}
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// setTime changes the custom time fields
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// The overWrite defines if change value when the filed has valid value
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func setTime(doc interface{}, fieldName string, overWrite bool) {
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if reflect.Ptr != reflect.TypeOf(doc).Kind() {
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fmt.Println("not a point type")
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return
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}
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e := reflect.ValueOf(doc).Elem()
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ca := e.FieldByName(fieldName)
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if ca.CanSet() {
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tt := time.Now()
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switch a := ca.Interface().(type) {
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case time.Time:
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if ca.Interface().(time.Time).IsZero() {
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ca.Set(reflect.ValueOf(tt))
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} else if overWrite {
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ca.Set(reflect.ValueOf(tt))
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}
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case int64:
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if ca.Interface().(int64) == 0 {
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ca.SetInt(tt.Unix())
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} else if overWrite {
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ca.SetInt(tt.Unix())
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}
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default:
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fmt.Println("unsupported type to setTime", a)
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}
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}
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}
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// setId changes the custom Id fields
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func setId(doc interface{}, fieldName string) {
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if reflect.Ptr != reflect.TypeOf(doc).Kind() {
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fmt.Println("not a point type")
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return
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}
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e := reflect.ValueOf(doc).Elem()
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ca := e.FieldByName(fieldName)
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if ca.CanSet() {
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switch a := ca.Interface().(type) {
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case primitive.ObjectID:
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if ca.Interface().(primitive.ObjectID).IsZero() {
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ca.Set(reflect.ValueOf(primitive.NewObjectID()))
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}
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case string:
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if ca.String() == "" {
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ca.SetString(primitive.NewObjectID().Hex())
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}
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default:
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fmt.Println("unsupported type to setId", a)
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}
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}
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}
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