feat(server/codes): GrantRewardTx 复用 applySubscription 发奖励会员天数

server/internal/codes/paygrant.go

@@ -29,3 +29,21 @@ func (svc *Service) GrantPaidSubscriptionTx(
 	_ = svc.store.WriteAuditLog(ctx, tx, fmt.Sprintf("user:%d", userID), "pay_grant", ref, string(meta))
 	return subID, expiresAt, nil
 }
+
+// GrantRewardTx 发放奖励会员天数(Pro,source∈{invite,task}),与付费/兑换码同一条
+// applySubscription 延时逻辑(max(到期,now)+days;已有活跃 pro 则原地顺延)。审计走 audit_log。
+func (svc *Service) GrantRewardTx(
+	ctx context.Context, tx *sql.Tx, userID int64, days int, source, auditAction, ref string,
+) (int64, time.Time, error) {
+	planID, err := svc.store.GetPlanIDTx(ctx, tx, PlanPro)
+	if err != nil {
+		return 0, time.Time{}, err
+	}
+	subID, expiresAt, err := svc.applySubscription(ctx, tx, userID, planID, days, source)
+	if err != nil {
+		return 0, time.Time{}, err
+	}
+	meta, _ := json.Marshal(map[string]any{"days": days, "source": source, "sub_id": subID})
+	_ = svc.store.WriteAuditLog(ctx, tx, fmt.Sprintf("user:%d", userID), auditAction, ref, string(meta))
+	return subID, expiresAt, nil
+}

server/internal/codes/reward_grant_sqlite_test.go

@@ -0,0 +1,48 @@
+package codes_test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/wangjia/pangolin/server/internal/codes"
+)
+
+// 无活跃 pro 的新用户:GrantRewardTx 新建一行 source='invite',并写一条 audit_log。
+func TestGrantRewardTx_FreshUserCreatesInviteSub(t *testing.T) {
+	db := openMigratedSQLite(t)
+	seedUser(t, db, 7)
+	store := codes.NewStore(db)
+	svc := codes.NewService(store, nil, 5, time.Hour)
+	ctx := context.Background()
+
+	tx, err := store.BeginTx(ctx)
+	if err != nil {
+		t.Fatalf("BeginTx: %v", err)
+	}
+	subID, exp, err := svc.GrantRewardTx(ctx, tx, 7, 3, "invite", "invite_reward", "ref-1")
+	if err != nil {
+		t.Fatalf("grant: %v", err)
+	}
+	if err := tx.Commit(); err != nil {
+		t.Fatal(err)
+	}
+	if subID == 0 || exp.Before(time.Now()) {
+		t.Fatalf("bad sub %d exp %v", subID, exp)
+	}
+
+	var src string
+	if err := db.QueryRow(`SELECT source FROM subscriptions WHERE id=?`, subID).Scan(&src); err != nil {
+		t.Fatalf("query source: %v", err)
+	}
+	if src != "invite" {
+		t.Fatalf("source = %q, want invite", src)
+	}
+	var n int
+	if err := db.QueryRow(`SELECT COUNT(*) FROM audit_log WHERE action='invite_reward' AND target='ref-1'`).Scan(&n); err != nil {
+		t.Fatalf("query audit_log: %v", err)
+	}
+	if n != 1 {
+		t.Fatalf("audit rows = %d, want 1", n)
+	}
+}