package full

import (
	"testing"

	"github.com/ipfs/go-cid"
	"github.com/stretchr/testify/require"

	"github.com/filecoin-project/lotus/chain/types"
	"github.com/filecoin-project/lotus/chain/types/ethtypes"
)

func TestEthLogFromEvent(t *testing.T) {
	// basic empty
	data, topics, ok := ethLogFromEvent(nil)
	require.True(t, ok)
	require.Nil(t, data)
	require.Nil(t, topics)

	// basic topic
	data, topics, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "t1",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}})
	require.True(t, ok)
	require.Nil(t, data)
	require.Len(t, topics, 1)
	require.Equal(t, topics[0], ethtypes.EthHash{})

	// basic topic with data
	data, topics, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "t1",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}, {
		Flags: 0,
		Key:   "d",
		Codec: cid.Raw,
		Value: []byte{0x0},
	}})
	require.True(t, ok)
	require.Equal(t, data, []byte{0x0})
	require.Len(t, topics, 1)
	require.Equal(t, topics[0], ethtypes.EthHash{})

	// skip topic
	_, _, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "t2",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}})
	require.False(t, ok)

	// duplicate topic
	_, _, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "t1",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}, {
		Flags: 0,
		Key:   "t1",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}})
	require.False(t, ok)

	// duplicate data
	_, _, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "d",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}, {
		Flags: 0,
		Key:   "d",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}})
	require.False(t, ok)

	// unknown key is fine
	data, topics, ok = ethLogFromEvent([]types.EventEntry{{
		Flags: 0,
		Key:   "t5",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}, {
		Flags: 0,
		Key:   "t1",
		Codec: cid.Raw,
		Value: make([]byte, 32),
	}})
	require.True(t, ok)
	require.Nil(t, data)
	require.Len(t, topics, 1)
	require.Equal(t, topics[0], ethtypes.EthHash{})
}