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forgejo/modules/forgefed/commit.go

106 lines
2.4 KiB
Go

// Copyright 2023 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package forgefed
import (
"reflect"
"time"
"unsafe"
ap "github.com/go-ap/activitypub"
"github.com/valyala/fastjson"
)
const (
CommitType ap.ActivityVocabularyType = "Commit"
)
type Commit struct {
ap.Object
// Created time at which the commit was written by its author
Created time.Time `jsonld:"created,omitempty"`
// Committed time at which the commit was committed by its committer
Committed time.Time `jsonld:"committed,omitempty"`
}
// CommitNew initializes a Commit type Object
func CommitNew() *Commit {
a := ap.ObjectNew(CommitType)
o := Commit{Object: *a}
return &o
}
func (c Commit) MarshalJSON() ([]byte, error) {
b, err := c.Object.MarshalJSON()
if len(b) == 0 || err != nil {
return nil, err
}
b = b[:len(b)-1]
if !c.Created.IsZero() {
ap.JSONWriteTimeProp(&b, "created", c.Created)
}
if !c.Committed.IsZero() {
ap.JSONWriteTimeProp(&b, "committed", c.Committed)
}
ap.JSONWrite(&b, '}')
return b, nil
}
func JSONLoadCommit(val *fastjson.Value, c *Commit) error {
if err := ap.OnObject(&c.Object, func(o *ap.Object) error {
return ap.JSONLoadObject(val, o)
}); err != nil {
return err
}
c.Created = ap.JSONGetTime(val, "created")
c.Committed = ap.JSONGetTime(val, "committed")
return nil
}
func (c *Commit) UnmarshalJSON(data []byte) error {
p := fastjson.Parser{}
val, err := p.ParseBytes(data)
if err != nil {
return err
}
return JSONLoadCommit(val, c)
}
// ToCommit tries to convert the it Item to a Commit object.
func ToCommit(it ap.Item) (*Commit, error) {
switch i := it.(type) {
case *Commit:
return i, nil
case Commit:
return &i, nil
case *ap.Object:
return (*Commit)(unsafe.Pointer(i)), nil
case ap.Object:
return (*Commit)(unsafe.Pointer(&i)), nil
default:
// NOTE(marius): this is an ugly way of dealing with the interface conversion error: types from different scopes
typ := reflect.TypeOf(new(Commit))
if i, ok := reflect.ValueOf(it).Convert(typ).Interface().(*Commit); ok {
return i, nil
}
}
return nil, ap.ErrorInvalidType[ap.Object](it)
}
type withCommitFn func(*Commit) error
// OnCommit calls function fn on it Item if it can be asserted to type *Commit
func OnCommit(it ap.Item, fn withCommitFn) error {
if it == nil {
return nil
}
ob, err := ToCommit(it)
if err != nil {
return err
}
return fn(ob)
}