F3: Forgejo driver and CLI

user, topic, project, label, milestone, repository, pull_request,
release, asset, comment, reaction, review providers

Signed-off-by: Earl Warren <contact@earl-warren.org>

Preserve file size when creating attachments

Introduced in c6f5029708

repoList.LoadAttributes has a ctx argument now

Rename `repo.GetOwner` to `repo.LoadOwner`

bd66fa586a

upgrade to the latest gof3

(cherry picked from commit c770713656)

[F3] ID remapping logic is in place, remove workaround

(cherry picked from commit d0fee30167)

[F3] it is experimental, do not enable by default

(cherry picked from commit de325b21d0)
(cherry picked from commit 547e7b3c40)
(cherry picked from commit 820df3a56b)
(cherry picked from commit eaba87689b)
(cherry picked from commit 1b86896b3b)

services/f3/driver/topic.go

@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: MIT
+
+package driver
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+
+	"lab.forgefriends.org/friendlyforgeformat/gof3/format"
+	"lab.forgefriends.org/friendlyforgeformat/gof3/util"
+)
+
+type Topic struct {
+	repo_model.Topic
+}
+
+func TopicConverter(f *repo_model.Topic) *Topic {
+	return &Topic{
+		Topic: *f,
+	}
+}
+
+func (o Topic) GetID() int64 {
+	return o.ID
+}
+
+func (o *Topic) SetID(id int64) {
+	o.ID = id
+}
+
+func (o *Topic) IsNil() bool {
+	return o.ID == 0
+}
+
+func (o *Topic) Equals(other *Topic) bool {
+	return o.Name == other.Name
+}
+
+func (o *Topic) ToFormat() *format.Topic {
+	return &format.Topic{
+		Common: format.NewCommon(o.ID),
+		Name:   o.Name,
+	}
+}
+
+func (o *Topic) FromFormat(topic *format.Topic) {
+	*o = Topic{
+		Topic: repo_model.Topic{
+			ID:   topic.Index.GetID(),
+			Name: topic.Name,
+		},
+	}
+}
+
+type TopicProvider struct {
+	g *Forgejo
+}
+
+func (o *TopicProvider) ToFormat(ctx context.Context, topic *Topic) *format.Topic {
+	return topic.ToFormat()
+}
+
+func (o *TopicProvider) FromFormat(ctx context.Context, m *format.Topic) *Topic {
+	var topic Topic
+	topic.FromFormat(m)
+	return &topic
+}
+
+func (o *TopicProvider) GetObjects(ctx context.Context, user *User, project *Project, page int) []*Topic {
+	topics, _, err := repo_model.FindTopics(&repo_model.FindTopicOptions{
+		ListOptions: db.ListOptions{Page: page, PageSize: o.g.perPage},
+		RepoID:      project.GetID(),
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	return util.ConvertMap[*repo_model.Topic, *Topic](topics, TopicConverter)
+}
+
+func (o *TopicProvider) ProcessObject(ctx context.Context, user *User, project *Project, topic *Topic) {
+}
+
+func (o *TopicProvider) Get(ctx context.Context, user *User, project *Project, exemplar *Topic) *Topic {
+	id := exemplar.GetID()
+	topic, err := repo_model.GetRepoTopicByID(ctx, project.GetID(), id)
+	if repo_model.IsErrTopicNotExist(err) {
+		return &Topic{}
+	}
+	if err != nil {
+		panic(err)
+	}
+	return TopicConverter(topic)
+}
+
+func (o *TopicProvider) Put(ctx context.Context, user *User, project *Project, topic *Topic) *Topic {
+	t, err := repo_model.AddTopic(project.GetID(), topic.Name)
+	if err != nil {
+		panic(err)
+	}
+	return o.Get(ctx, user, project, TopicConverter(t))
+}
+
+func (o *TopicProvider) Delete(ctx context.Context, user *User, project *Project, topic *Topic) *Topic {
+	t := o.Get(ctx, user, project, topic)
+	if !t.IsNil() {
+		t, err := repo_model.DeleteTopic(project.GetID(), t.Name)
+		if err != nil {
+			panic(err)
+		}
+		return TopicConverter(t)
+	}
+	return t
+}