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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/>.
package account
import (
"context"
"errors"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/paging"
)
// FollowersGet fetches a list of the target account's followers.
func (p *Processor) FollowersGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string, page *paging.Page) (*apimodel.PageableResponse, gtserror.WithCode) {
// Fetch target account to check it exists, and visibility of requester->target.
targetAccount, errWithCode := p.c.GetVisibleTargetAccount(ctx, requestingAccount, targetAccountID)
if errWithCode != nil {
return nil, errWithCode
}
if targetAccount.IsInstance() {
// Instance accounts can't follow/be followed.
return paging.EmptyResponse(), nil
}
// If account isn't requesting its own followers list,
// but instead the list for a local account that has
// hide_followers set, just return an empty array.
if targetAccountID != requestingAccount.ID &&
targetAccount.IsLocal() &&
*targetAccount.Settings.HideCollections {
return paging.EmptyResponse(), nil
}
follows, err := p.state.DB.GetAccountFollowers(ctx, targetAccountID, page)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = gtserror.Newf("db error getting followers: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Check for empty response.
count := len(follows)
if count == 0 {
return paging.EmptyResponse(), nil
}
// Get the lowest and highest
// ID values, used for paging.
lo := follows[count-1].ID
hi := follows[0].ID
// Func to fetch follow source at index.
getIdx := func(i int) *gtsmodel.Account {
return follows[i].Account
}
// Get a filtered slice of public API account models.
items := p.c.GetVisibleAPIAccountsPaged(ctx,
requestingAccount,
getIdx,
len(follows),
)
return paging.PackageResponse(paging.ResponseParams{
Items: items,
Path: "/api/v1/accounts/" + targetAccountID + "/followers",
Next: page.Next(lo, hi),
Prev: page.Prev(lo, hi),
}), nil
}
// FollowingGet fetches a list of the accounts that target account is following.
func (p *Processor) FollowingGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string, page *paging.Page) (*apimodel.PageableResponse, gtserror.WithCode) {
// Fetch target account to check it exists, and visibility of requester->target.
targetAccount, errWithCode := p.c.GetVisibleTargetAccount(ctx, requestingAccount, targetAccountID)
if errWithCode != nil {
return nil, errWithCode
}
if targetAccount.IsInstance() {
// Instance accounts can't follow/be followed.
return paging.EmptyResponse(), nil
}
// If account isn't requesting its own following list,
// but instead the list for a local account that has
// hide_followers set, just return an empty array.
if targetAccountID != requestingAccount.ID &&
targetAccount.IsLocal() &&
*targetAccount.Settings.HideCollections {
return paging.EmptyResponse(), nil
}
// Fetch known accounts that follow given target account ID.
follows, err := p.state.DB.GetAccountFollows(ctx, targetAccountID, page)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = gtserror.Newf("db error getting followers: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Check for empty response.
count := len(follows)
if count == 0 {
return paging.EmptyResponse(), nil
}
// Get the lowest and highest
// ID values, used for paging.
lo := follows[count-1].ID
hi := follows[0].ID
// Func to fetch follow source at index.
getIdx := func(i int) *gtsmodel.Account {
return follows[i].TargetAccount
}
// Get a filtered slice of public API account models.
items := p.c.GetVisibleAPIAccountsPaged(ctx,
requestingAccount,
getIdx,
len(follows),
)
return paging.PackageResponse(paging.ResponseParams{
Items: items,
Path: "/api/v1/accounts/" + targetAccountID + "/following",
Next: page.Next(lo, hi),
Prev: page.Prev(lo, hi),
}), nil
}
// RelationshipGet returns a relationship model describing the relationship of the targetAccount to the Authed account.
func (p *Processor) RelationshipGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) (*apimodel.Relationship, gtserror.WithCode) {
if requestingAccount == nil {
return nil, gtserror.NewErrorForbidden(gtserror.New("not authed"))
}
gtsR, err := p.state.DB.GetRelationship(ctx, requestingAccount.ID, targetAccountID)
if err != nil {
return nil, gtserror.NewErrorInternalError(gtserror.Newf("error getting relationship: %s", err))
}
r, err := p.converter.RelationshipToAPIRelationship(ctx, gtsR)
if err != nil {
return nil, gtserror.NewErrorInternalError(gtserror.Newf("error converting relationship: %s", err))
}
return r, nil
}
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