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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 typeutils
import (
crand "crypto/rand"
"math/big"
"math/rand"
"sync"
"sync/atomic"
"time"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/filter/interaction"
"github.com/superseriousbusiness/gotosocial/internal/filter/visibility"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/state"
)
type Converter struct {
state *state.State
defaultAvatars []string
randAvatars sync.Map
visFilter *visibility.Filter
intFilter *interaction.Filter
randStats atomic.Pointer[apimodel.RandomStats]
}
func NewConverter(state *state.State) *Converter {
return &Converter{
state: state,
defaultAvatars: populateDefaultAvatars(),
visFilter: visibility.NewFilter(state),
intFilter: interaction.NewFilter(state),
}
}
// RandomStats returns or generates
// and returns random instance stats.
func (c *Converter) RandomStats() apimodel.RandomStats {
now := time.Now()
stats := c.randStats.Load()
if stats != nil && time.Since(stats.Generated) < time.Hour {
// Random stats are still
// fresh (less than 1hr old),
// so return them as-is.
return *stats
}
// Generate new random stats.
newStats := genRandStats()
newStats.Generated = now
c.randStats.Store(&newStats)
return newStats
}
func genRandStats() apimodel.RandomStats {
const (
statusesMax = 10000000
usersMax = 1000000
)
statusesB, err := crand.Int(crand.Reader, big.NewInt(statusesMax))
if err != nil {
// Only errs if something is buggered with the OS.
log.Panicf(nil, "error randomly generating statuses count: %v", err)
}
totalUsersB, err := crand.Int(crand.Reader, big.NewInt(usersMax))
if err != nil {
// Only errs if something is buggered with the OS.
log.Panicf(nil, "error randomly generating users count: %v", err)
}
// Monthly users should only ever
// be <= 100% of total users.
totalUsers := totalUsersB.Int64()
activeRatio := rand.Float64() //nolint
mau := int64(float64(totalUsers) * activeRatio)
return apimodel.RandomStats{
Statuses: statusesB.Int64(),
TotalUsers: totalUsers,
MonthlyActiveUsers: mau,
}
}
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