owpengram-server/internal/store/memory/reserved_username.go
Astra 2bdb1ecf37 usernames: operator reserved-username blocklist
A plain blocklist for names like @support - separate from the collectible
system, so a reservation has no owner, no price and no "bought on Fragment"
badge.

- reserved_usernames table + migration.
- Enforced in replacePeerUsernameTx (the single editable-username write point:
  account.updateUsername, channels.updateUsername, @BotFather /setusername) and
  in the collectible mint path; a reserved name returns USERNAME_OCCUPIED.
- admin.Service: ReserveUsername / UnreserveUsername (journalled commands) and
  the ReservedUsernames listing.
- adminapi: /v1/reserved-usernames{,/reserve,/unreserve}.
- telesrv-admin panel + a "Reserved Usernames" page in the web UI (dist rebuilt).
- Postgres and in-memory store implementations; the memory registry gains an
  optional reserved-name check so tests exercise the same rule.
2026-09-14 12:04:43 +01:00

100 lines
2.6 KiB
Go

package memory
import (
"context"
"sort"
"strings"
"sync"
"time"
"telesrv/internal/domain"
)
// ReservedUsernameStore is the in-memory operator username blocklist.
type ReservedUsernameStore struct {
mu sync.Mutex
entries map[string]domain.ReservedUsername // keyed by username_lower
}
// NewReservedUsernameStore creates an empty blocklist.
func NewReservedUsernameStore() *ReservedUsernameStore {
return &ReservedUsernameStore{entries: make(map[string]domain.ReservedUsername)}
}
func (s *ReservedUsernameStore) IsReserved(_ context.Context, usernameLower string) (bool, error) {
if s == nil {
return false, nil
}
usernameLower = strings.ToLower(strings.TrimSpace(usernameLower))
if usernameLower == "" {
return false, nil
}
s.mu.Lock()
defer s.mu.Unlock()
_, ok := s.entries[usernameLower]
return ok, nil
}
func (s *ReservedUsernameStore) ReserveUsername(_ context.Context, username, reason, actor string) (bool, error) {
username = strings.TrimSpace(username)
lower := strings.ToLower(username)
if lower == "" {
return false, domain.ErrUsernameInvalid
}
s.mu.Lock()
defer s.mu.Unlock()
if _, ok := s.entries[lower]; ok {
return false, nil
}
s.entries[lower] = domain.ReservedUsername{Username: username, Reason: reason, Actor: actor, CreatedAt: time.Now().UTC()}
return true, nil
}
func (s *ReservedUsernameStore) UnreserveUsername(_ context.Context, username string) (bool, error) {
lower := strings.ToLower(strings.TrimSpace(username))
if lower == "" {
return false, domain.ErrUsernameInvalid
}
s.mu.Lock()
defer s.mu.Unlock()
if _, ok := s.entries[lower]; !ok {
return false, nil
}
delete(s.entries, lower)
return true, nil
}
func (s *ReservedUsernameStore) ReservedUsernames(_ context.Context, filter domain.ReservedUsernameFilter) ([]domain.ReservedUsername, error) {
s.mu.Lock()
defer s.mu.Unlock()
q := strings.ToLower(strings.TrimSpace(filter.Query))
out := make([]domain.ReservedUsername, 0, len(s.entries))
for key, entry := range s.entries {
if q != "" && !strings.HasPrefix(key, q) {
continue
}
out = append(out, entry)
}
sort.Slice(out, func(i, j int) bool {
if !out[i].CreatedAt.Equal(out[j].CreatedAt) {
return out[i].CreatedAt.After(out[j].CreatedAt)
}
return strings.ToLower(out[i].Username) < strings.ToLower(out[j].Username)
})
limit := filter.Limit
if limit <= 0 || limit > 500 {
limit = 100
}
offset := filter.Offset
if offset < 0 {
offset = 0
}
if offset >= len(out) {
return []domain.ReservedUsername{}, nil
}
end := offset + limit
if end > len(out) {
end = len(out)
}
return out[offset:end], nil
}