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)

services/f3/driver/label.go

@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: MIT
+
+package driver
+
+import (
+	"context"
+	"fmt"
+
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+
+	"lab.forgefriends.org/friendlyforgeformat/gof3/format"
+	"lab.forgefriends.org/friendlyforgeformat/gof3/util"
+)
+
+type Label struct {
+	issues_model.Label
+}
+
+func LabelConverter(f *issues_model.Label) *Label {
+	return &Label{
+		Label: *f,
+	}
+}
+
+func (o Label) GetID() int64 {
+	return o.ID
+}
+
+func (o Label) GetName() string {
+	return o.Name
+}
+
+func (o *Label) SetID(id int64) {
+	o.ID = id
+}
+
+func (o *Label) IsNil() bool {
+	return o.ID == 0
+}
+
+func (o *Label) Equals(other *Label) bool {
+	return o.Name == other.Name
+}
+
+func (o *Label) ToFormat() *format.Label {
+	return &format.Label{
+		Common:      format.NewCommon(o.ID),
+		Name:        o.Name,
+		Color:       o.Color,
+		Description: o.Description,
+	}
+}
+
+func (o *Label) FromFormat(label *format.Label) {
+	*o = Label{
+		Label: issues_model.Label{
+			ID:          label.GetID(),
+			Name:        label.Name,
+			Description: label.Description,
+			Color:       label.Color,
+		},
+	}
+}
+
+type LabelProvider struct {
+	g       *Forgejo
+	project *ProjectProvider
+}
+
+func (o *LabelProvider) ToFormat(ctx context.Context, label *Label) *format.Label {
+	return label.ToFormat()
+}
+
+func (o *LabelProvider) FromFormat(ctx context.Context, m *format.Label) *Label {
+	var label Label
+	label.FromFormat(m)
+	return &label
+}
+
+func (o *LabelProvider) GetObjects(ctx context.Context, user *User, project *Project, page int) []*Label {
+	labels, err := issues_model.GetLabelsByRepoID(ctx, project.GetID(), "", db.ListOptions{Page: page, PageSize: o.g.perPage})
+	if err != nil {
+		panic(fmt.Errorf("error while listing labels: %v", err))
+	}
+
+	r := util.ConvertMap[*issues_model.Label, *Label](labels, LabelConverter)
+	if o.project != nil {
+		o.project.labels = util.NewNameIDMap[*Label](r)
+	}
+	return r
+}
+
+func (o *LabelProvider) ProcessObject(ctx context.Context, user *User, project *Project, label *Label) {
+}
+
+func (o *LabelProvider) Get(ctx context.Context, user *User, project *Project, exemplar *Label) *Label {
+	id := exemplar.GetID()
+	label, err := issues_model.GetLabelInRepoByID(ctx, project.GetID(), id)
+	if issues_model.IsErrRepoLabelNotExist(err) {
+		return &Label{}
+	}
+	if err != nil {
+		panic(err)
+	}
+	return LabelConverter(label)
+}
+
+func (o *LabelProvider) Put(ctx context.Context, user *User, project *Project, label *Label) *Label {
+	l := label.Label
+	l.RepoID = project.GetID()
+	if err := issues_model.NewLabel(ctx, &l); err != nil {
+		panic(err)
+	}
+	return o.Get(ctx, user, project, LabelConverter(&l))
+}
+
+func (o *LabelProvider) Delete(ctx context.Context, user *User, project *Project, label *Label) *Label {
+	l := o.Get(ctx, user, project, label)
+	if !l.IsNil() {
+		if err := issues_model.DeleteLabel(project.GetID(), l.GetID()); err != nil {
+			panic(err)
+		}
+	}
+	return l
+}