111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
// Copyright 2023 The Forgejo Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package forgefed
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import (
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"reflect"
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"unsafe"
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ap "github.com/go-ap/activitypub"
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"github.com/valyala/fastjson"
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)
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const (
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PushType ap.ActivityVocabularyType = "Push"
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)
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type Push struct {
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ap.Object
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// Target the specific repo history tip onto which the commits were added
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Target ap.Item `jsonld:"target,omitempty"`
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// HashBefore hash before adding the new commits
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HashBefore ap.Item `jsonld:"hashBefore,omitempty"`
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// HashAfter hash before adding the new commits
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HashAfter ap.Item `jsonld:"hashAfter,omitempty"`
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}
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// PushNew initializes a Push type Object
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func PushNew() *Push {
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a := ap.ObjectNew(PushType)
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o := Push{Object: *a}
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return &o
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}
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func (p Push) MarshalJSON() ([]byte, error) {
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b, err := p.Object.MarshalJSON()
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if len(b) == 0 || err != nil {
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return nil, err
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}
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b = b[:len(b)-1]
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if p.Target != nil {
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ap.JSONWriteItemProp(&b, "target", p.Target)
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}
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if p.HashBefore != nil {
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ap.JSONWriteItemProp(&b, "hashBefore", p.HashBefore)
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}
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if p.HashAfter != nil {
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ap.JSONWriteItemProp(&b, "hashAfter", p.HashAfter)
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}
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ap.JSONWrite(&b, '}')
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return b, nil
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}
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func JSONLoadPush(val *fastjson.Value, p *Push) error {
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if err := ap.OnObject(&p.Object, func(o *ap.Object) error {
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return ap.JSONLoadObject(val, o)
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}); err != nil {
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return err
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}
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p.Target = ap.JSONGetItem(val, "target")
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p.HashBefore = ap.JSONGetItem(val, "hashBefore")
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p.HashAfter = ap.JSONGetItem(val, "hashAfter")
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return nil
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}
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func (p *Push) UnmarshalJSON(data []byte) error {
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par := fastjson.Parser{}
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val, err := par.ParseBytes(data)
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if err != nil {
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return err
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}
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return JSONLoadPush(val, p)
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}
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// ToPush tries to convert the it Item to a Push object.
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func ToPush(it ap.Item) (*Push, error) {
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switch i := it.(type) {
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case *Push:
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return i, nil
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case Push:
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return &i, nil
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case *ap.Object:
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return (*Push)(unsafe.Pointer(i)), nil
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case ap.Object:
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return (*Push)(unsafe.Pointer(&i)), nil
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default:
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// NOTE(marius): this is an ugly way of dealing with the interface conversion error: types from different scopes
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typ := reflect.TypeOf(new(Push))
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if i, ok := reflect.ValueOf(it).Convert(typ).Interface().(*Push); ok {
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return i, nil
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}
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}
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return nil, ap.ErrorInvalidType[ap.Object](it)
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}
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type withPushFn func(*Push) error
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// OnPush calls function fn on it Item if it can be asserted to type *Push
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func OnPush(it ap.Item, fn withPushFn) error {
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if it == nil {
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return nil
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}
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ob, err := ToPush(it)
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if err != nil {
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return err
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}
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return fn(ob)
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}
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