feat(server/reward): TG 绑定 token 签发/消费 + GET /v1/tasks/telegram/start

server/internal/reward/service.go

@@ -5,7 +5,10 @@ import (
 	"crypto/rand"
 	"database/sql"
 	"log/slog"
+	"sync"
 	"time"
+
+	"github.com/redis/go-redis/v9"
 )
 
 type Granter interface {
@@ -20,6 +23,11 @@ type Service struct {
 	g   Granter
 	cfg Config
 	now func() time.Time
+
+	rdb    *redis.Client
+	tg     tgConfig
+	memMu  sync.Mutex
+	memTok map[string]int64
 }
 
 func NewService(db *sql.DB, st *Store, g Granter, cfg Config, now func() time.Time) *Service {
@@ -134,3 +142,8 @@ func (s *Service) OnFirstPaidTx(ctx context.Context, tx *sql.Tx, inviteeID int64
 	}
 	return s.st.MarkPaidRewardedTx(ctx, tx, inviteeID, now)
 }
+
+// TelegramDeepLink 拼 t.me 深链,携带绑定 token。
+func (s *Service) TelegramDeepLink(tok string) string {
+	return "https://t.me/" + s.tg.botUser + "?start=" + tok
+}