gotosocial/internal/typeutils/frontendtointernal.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package typeutils
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import (
"fmt"
"net/url"
"slices"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
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func APIVisToVis(m apimodel.Visibility) gtsmodel.Visibility {
switch m {
case apimodel.VisibilityPublic:
return gtsmodel.VisibilityPublic
case apimodel.VisibilityUnlisted:
return gtsmodel.VisibilityUnlocked
case apimodel.VisibilityPrivate:
return gtsmodel.VisibilityFollowersOnly
case apimodel.VisibilityMutualsOnly:
return gtsmodel.VisibilityMutualsOnly
case apimodel.VisibilityDirect:
return gtsmodel.VisibilityDirect
}
return ""
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}
func APIMarkerNameToMarkerName(m apimodel.MarkerName) gtsmodel.MarkerName {
switch m {
case apimodel.MarkerNameHome:
return gtsmodel.MarkerNameHome
case apimodel.MarkerNameNotifications:
return gtsmodel.MarkerNameNotifications
}
return ""
}
func APIFilterActionToFilterAction(m apimodel.FilterAction) gtsmodel.FilterAction {
switch m {
case apimodel.FilterActionWarn:
return gtsmodel.FilterActionWarn
case apimodel.FilterActionHide:
return gtsmodel.FilterActionHide
}
return gtsmodel.FilterActionNone
}
func APIPolicyValueToPolicyValue(u apimodel.PolicyValue) (gtsmodel.PolicyValue, error) {
switch u {
case apimodel.PolicyValuePublic:
return gtsmodel.PolicyValuePublic, nil
case apimodel.PolicyValueFollowers:
return gtsmodel.PolicyValueFollowers, nil
case apimodel.PolicyValueFollowing:
return gtsmodel.PolicyValueFollowing, nil
case apimodel.PolicyValueMutuals:
return gtsmodel.PolicyValueMutuals, nil
case apimodel.PolicyValueMentioned:
return gtsmodel.PolicyValueMentioned, nil
case apimodel.PolicyValueAuthor:
return gtsmodel.PolicyValueAuthor, nil
case apimodel.PolicyValueMe:
err := fmt.Errorf("policyURI %s has no corresponding internal model", apimodel.PolicyValueMe)
return "", err
default:
// Parse URI to ensure it's a
// url with a valid protocol.
url, err := url.Parse(string(u))
if err != nil {
err := fmt.Errorf("could not parse non-predefined policy value as uri: %w", err)
return "", err
}
if url.Host != "http" && url.Host != "https" {
err := fmt.Errorf("non-predefined policy values must have protocol 'http' or 'https' (%s)", u)
return "", err
}
return gtsmodel.PolicyValue(u), nil
}
}
func APIInteractionPolicyToInteractionPolicy(
p *apimodel.InteractionPolicy,
v apimodel.Visibility,
) (*gtsmodel.InteractionPolicy, error) {
visibility := APIVisToVis(v)
convertURIs := func(apiURIs []apimodel.PolicyValue) (gtsmodel.PolicyValues, error) {
policyURIs := gtsmodel.PolicyValues{}
for _, apiURI := range apiURIs {
uri, err := APIPolicyValueToPolicyValue(apiURI)
if err != nil {
return nil, err
}
if !uri.FeasibleForVisibility(visibility) {
err := fmt.Errorf("policyURI %s is not feasible for visibility %s", apiURI, v)
return nil, err
}
policyURIs = append(policyURIs, uri)
}
return policyURIs, nil
}
canLikeAlways, err := convertURIs(p.CanFavourite.Always)
if err != nil {
err := fmt.Errorf("error converting %s.can_favourite.always: %w", v, err)
return nil, err
}
canLikeWithApproval, err := convertURIs(p.CanFavourite.WithApproval)
if err != nil {
err := fmt.Errorf("error converting %s.can_favourite.with_approval: %w", v, err)
return nil, err
}
canReplyAlways, err := convertURIs(p.CanReply.Always)
if err != nil {
err := fmt.Errorf("error converting %s.can_reply.always: %w", v, err)
return nil, err
}
canReplyWithApproval, err := convertURIs(p.CanReply.WithApproval)
if err != nil {
err := fmt.Errorf("error converting %s.can_reply.with_approval: %w", v, err)
return nil, err
}
canAnnounceAlways, err := convertURIs(p.CanReblog.Always)
if err != nil {
err := fmt.Errorf("error converting %s.can_reblog.always: %w", v, err)
return nil, err
}
canAnnounceWithApproval, err := convertURIs(p.CanReblog.WithApproval)
if err != nil {
err := fmt.Errorf("error converting %s.can_reblog.with_approval: %w", v, err)
return nil, err
}
// Normalize URIs.
//
// 1. Ensure canLikeAlways, canReplyAlways,
// and canAnnounceAlways include self
// (either explicitly or within public).
// ensureIncludesSelf adds the "author" PolicyValue
// to given slice of PolicyValues, if not already
// explicitly or implicitly included.
ensureIncludesSelf := func(vals gtsmodel.PolicyValues) gtsmodel.PolicyValues {
includesSelf := slices.ContainsFunc(
vals,
func(uri gtsmodel.PolicyValue) bool {
return uri == gtsmodel.PolicyValuePublic ||
uri == gtsmodel.PolicyValueAuthor
},
)
if includesSelf {
// This slice of policy values
// already includes self explicitly
// or implicitly, nothing to change.
return vals
}
// Need to add self/author to
// this slice of policy values.
vals = append(vals, gtsmodel.PolicyValueAuthor)
return vals
}
canLikeAlways = ensureIncludesSelf(canLikeAlways)
canReplyAlways = ensureIncludesSelf(canReplyAlways)
canAnnounceAlways = ensureIncludesSelf(canAnnounceAlways)
// 2. Ensure canReplyAlways includes mentioned
// accounts (either explicitly or within public).
if !slices.ContainsFunc(
canReplyAlways,
func(uri gtsmodel.PolicyValue) bool {
return uri == gtsmodel.PolicyValuePublic ||
uri == gtsmodel.PolicyValueMentioned
},
) {
canReplyAlways = append(
canReplyAlways,
gtsmodel.PolicyValueMentioned,
)
}
return &gtsmodel.InteractionPolicy{
CanLike: gtsmodel.PolicyRules{
Always: canLikeAlways,
WithApproval: canLikeWithApproval,
},
CanReply: gtsmodel.PolicyRules{
Always: canReplyAlways,
WithApproval: canReplyWithApproval,
},
CanAnnounce: gtsmodel.PolicyRules{
Always: canAnnounceAlways,
WithApproval: canAnnounceWithApproval,
},
}, nil
}