gotosocial/internal/processing/list/get.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/>.
package list
import (
"context"
"errors"
"fmt"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// Get returns the api model of one list with the given ID.
func (p *Processor) Get(ctx context.Context, account *gtsmodel.Account, id string) (*apimodel.List, gtserror.WithCode) {
list, errWithCode := p.getList(
// Use barebones ctx; no embedded
// structs necessary for this call.
gtscontext.SetBarebones(ctx),
account.ID,
id,
)
if errWithCode != nil {
return nil, errWithCode
}
return p.apiList(ctx, list)
}
// GetMultiple returns multiple lists created by the given account, sorted by list ID DESC (newest first).
func (p *Processor) GetAll(ctx context.Context, account *gtsmodel.Account) ([]*apimodel.List, gtserror.WithCode) {
lists, err := p.state.DB.GetListsForAccountID(
// Use barebones ctx; no embedded
// structs necessary for simple GET.
gtscontext.SetBarebones(ctx),
account.ID,
)
if err != nil {
if errors.Is(err, db.ErrNoEntries) {
return nil, nil
}
return nil, gtserror.NewErrorInternalError(err)
}
apiLists := make([]*apimodel.List, 0, len(lists))
for _, list := range lists {
apiList, errWithCode := p.apiList(ctx, list)
if errWithCode != nil {
return nil, errWithCode
}
apiLists = append(apiLists, apiList)
}
return apiLists, nil
}
// GetAllListAccounts returns all accounts that are in the given list,
// owned by the given account. There's no pagination for this endpoint.
//
// See https://docs.joinmastodon.org/methods/lists/#query-parameters:
//
// Limit: Integer. Maximum number of results. Defaults to 40 accounts.
// Max 80 accounts. Set to 0 in order to get all accounts without pagination.
func (p *Processor) GetAllListAccounts(
ctx context.Context,
account *gtsmodel.Account,
listID string,
) ([]*apimodel.Account, gtserror.WithCode) {
// Ensure list exists + is owned by requesting account.
_, errWithCode := p.getList(
// Use barebones ctx; no embedded
// structs necessary for this call.
gtscontext.SetBarebones(ctx),
account.ID,
listID,
)
if errWithCode != nil {
return nil, errWithCode
}
// Get all entries for this list.
listEntries, err := p.state.DB.GetListEntries(ctx, listID, "", "", "", 0)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = gtserror.Newf("error getting list entries: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Extract accounts from list entries + add them to response.
accounts := make([]*apimodel.Account, 0, len(listEntries))
p.accountsFromListEntries(ctx, listEntries, func(acc *apimodel.Account) {
accounts = append(accounts, acc)
})
return accounts, nil
}
// GetListAccounts returns accounts that are in the given list, owned by the given account.
// The additional parameters can be used for paging.
func (p *Processor) GetListAccounts(
ctx context.Context,
account *gtsmodel.Account,
listID string,
maxID string,
sinceID string,
minID string,
limit int,
) (*apimodel.PageableResponse, gtserror.WithCode) {
// Ensure list exists + is owned by requesting account.
_, errWithCode := p.getList(
// Use barebones ctx; no embedded
// structs necessary for this call.
gtscontext.SetBarebones(ctx),
account.ID,
listID,
)
if errWithCode != nil {
return nil, errWithCode
}
// To know which accounts are in the list,
// we need to first get requested list entries.
listEntries, err := p.state.DB.GetListEntries(ctx, listID, maxID, sinceID, minID, limit)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = fmt.Errorf("GetListAccounts: error getting list entries: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
count := len(listEntries)
if count == 0 {
// No list entries means no accounts.
return util.EmptyPageableResponse(), nil
}
var (
items = make([]interface{}, 0, count)
// Set next + prev values before filtering and API
// converting, so caller can still page properly.
nextMaxIDValue = listEntries[count-1].ID
prevMinIDValue = listEntries[0].ID
)
// Extract accounts from list entries + add them to response.
p.accountsFromListEntries(ctx, listEntries, func(acc *apimodel.Account) {
items = append(items, acc)
})
return util.PackagePageableResponse(util.PageableResponseParams{
Items: items,
Path: "/api/v1/lists/" + listID + "/accounts",
NextMaxIDValue: nextMaxIDValue,
PrevMinIDValue: prevMinIDValue,
Limit: limit,
})
}
func (p *Processor) accountsFromListEntries(
ctx context.Context,
listEntries []*gtsmodel.ListEntry,
appendAcc func(*apimodel.Account),
) {
// For each list entry, we want the account it points to.
// To get this, we need to first get the follow that the
// list entry pertains to, then extract the target account
// from that follow.
//
// We do paging not by account ID, but by list entry ID.
for _, listEntry := range listEntries {
if err := p.state.DB.PopulateListEntry(ctx, listEntry); err != nil {
log.Errorf(ctx, "error populating list entry: %v", err)
continue
}
if err := p.state.DB.PopulateFollow(ctx, listEntry.Follow); err != nil {
log.Errorf(ctx, "error populating follow: %v", err)
continue
}
apiAccount, err := p.converter.AccountToAPIAccountPublic(ctx, listEntry.Follow.TargetAccount)
if err != nil {
log.Errorf(ctx, "error converting to public api account: %v", err)
continue
}
appendAcc(apiAccount)
}
}