package command

import (
	"bytes"
	"testing"
)

func TestSendGiftIdempotencyIgnoresGatewayResolvedSnapshots(t *testing.T) {
	base := SendGift{
		Base:       Base{CommandID: "combo-1_b1", Room: "room-1", ActorID: 42},
		TargetType: "user", TargetUserIDs: []int64{43}, TargetUserID: 43,
		GiftID: "rose", GiftCount: 9, ComboSessionID: "combo-1", BatchSeq: 1,
		SenderRegionID: 1001, SenderCountryID: 840,
		TargetHostScopes:     []GiftTargetHostScope{{TargetUserID: 43, TargetIsHost: true, TargetHostRegionID: 1001}},
		SenderDisplayProfile: GiftDisplayProfile{UserID: 42, Username: "before"},
	}
	retry := base
	retry.SenderRegionID = 2002
	retry.SenderCountryID = 356
	retry.TargetHostScopes = []GiftTargetHostScope{{TargetUserID: 43, TargetIsHost: false}}
	retry.SenderDisplayProfile = GiftDisplayProfile{UserID: 42, Username: "after"}

	left, err := IdempotencyPayloadForCommand(base)
	if err != nil {
		t.Fatalf("base payload: %v", err)
	}
	right, err := IdempotencyPayloadForCommand(retry)
	if err != nil {
		t.Fatalf("retry payload: %v", err)
	}
	if !bytes.Equal(left, right) {
		t.Fatalf("gateway snapshot drift changed client idempotency semantics:\nleft=%s\nright=%s", left, right)
	}
}

func TestSendGiftIdempotencyKeepsComboBatchIdentity(t *testing.T) {
	base := SendGift{Base: Base{CommandID: "combo-1_b1", Room: "room-1", ActorID: 42}, TargetType: "user", TargetUserIDs: []int64{43}, TargetUserID: 43, GiftID: "rose", GiftCount: 1, ComboSessionID: "combo-1", BatchSeq: 1}
	reused := base
	reused.BatchSeq = 2
	left, _ := IdempotencyPayloadForCommand(base)
	right, _ := IdempotencyPayloadForCommand(reused)
	if bytes.Equal(left, right) {
		t.Fatal("same command_id reused for another combo batch was not detected")
	}
}