package test

import (
	"context"
	"fmt"
	"os"
	"sync/atomic"
	"testing"
	"time"

	"github.com/stretchr/testify/require"

	"github.com/filecoin-project/specs-actors/actors/abi"

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

func TestCCUpgrade(t *testing.T, b APIBuilder, blocktime time.Duration) {
	_ = os.Setenv("BELLMAN_NO_GPU", "1")

	ctx := context.Background()
	n, sn := b(t, 1, OneMiner)
	client := n[0].FullNode.(*impl.FullNodeAPI)
	miner := sn[0]

	addrinfo, err := client.NetAddrsListen(ctx)
	if err != nil {
		t.Fatal(err)
	}

	if err := miner.NetConnect(ctx, addrinfo); err != nil {
		t.Fatal(err)
	}
	time.Sleep(time.Second)

	mine := int64(1)
	done := make(chan struct{})
	go func() {
		defer close(done)
		for atomic.LoadInt64(&mine) == 1 {
			time.Sleep(blocktime)
			if err := sn[0].MineOne(ctx, MineNext); err != nil {
				t.Error(err)
			}
		}
	}()

	maddr, err := miner.ActorAddress(ctx)
	if err != nil {
		t.Fatal(err)
	}

	CC := abi.SectorNumber(GenesisPreseals + 1)
	Upgraded := CC + 1

	pledgeSectors(t, ctx, miner, 1, 0, nil)

	sl, err := miner.SectorsList(ctx)
	if err != nil {
		t.Fatal(err)
	}
	if len(sl) != 1 {
		t.Fatal("expected 1 sector")
	}

	if sl[0] != CC {
		t.Fatal("bad")
	}

	{
		si, err := client.StateSectorGetInfo(ctx, maddr, CC, types.EmptyTSK)
		require.NoError(t, err)
		require.Less(t, 50000, int(si.Expiration))
	}

	if err := miner.SectorMarkForUpgrade(ctx, sl[0]); err != nil {
		t.Fatal(err)
	}

	makeDeal(t, ctx, 6, client, miner, false, false)

	// Validate upgrade

	{
		exp, err := client.StateSectorExpiration(ctx, maddr, CC, types.EmptyTSK)
		require.NoError(t, err)
		require.Greater(t, 50000, int(exp.OnTime))
	}
	{
		exp, err := client.StateSectorExpiration(ctx, maddr, Upgraded, types.EmptyTSK)
		require.NoError(t, err)
		require.Less(t, 50000, int(exp.OnTime))
	}

	fmt.Println("shutting down mining")
	atomic.AddInt64(&mine, -1)
	<-done
}