package keeper_test

import (
	gocontext "context"
	"fmt"

	"github.com/cosmos/cosmos-sdk/testutil/testdata"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/types/query"
	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
	"github.com/cosmos/cosmos-sdk/x/bank/testutil"
	"github.com/cosmos/cosmos-sdk/x/bank/types"
	minttypes "github.com/cosmos/cosmos-sdk/x/mint/types"
)

func (suite *IntegrationTestSuite) TestQueryBalance() {
	app, ctx, queryClient := suite.app, suite.ctx, suite.queryClient
	_, _, addr := testdata.KeyTestPubAddr()

	_, err := queryClient.Balance(gocontext.Background(), &types.QueryBalanceRequest{})
	suite.Require().Error(err)

	_, err = queryClient.Balance(gocontext.Background(), &types.QueryBalanceRequest{Address: addr.String()})
	suite.Require().Error(err)

	req := types.NewQueryBalanceRequest(addr, fooDenom)
	res, err := queryClient.Balance(gocontext.Background(), req)
	suite.Require().NoError(err)
	suite.Require().NotNil(res)
	suite.True(res.Balance.IsZero())

	origCoins := sdk.NewCoins(newFooCoin(50), newBarCoin(30))
	acc := app.AccountKeeper.NewAccountWithAddress(ctx, addr)

	app.AccountKeeper.SetAccount(ctx, acc)
	suite.Require().NoError(testutil.FundAccount(app.BankKeeper, ctx, acc.GetAddress(), origCoins))

	res, err = queryClient.Balance(gocontext.Background(), req)
	suite.Require().NoError(err)
	suite.Require().NotNil(res)
	suite.True(res.Balance.IsEqual(newFooCoin(50)))
}

func (suite *IntegrationTestSuite) TestQueryAllBalances() {
	app, ctx, queryClient := suite.app, suite.ctx, suite.queryClient
	_, _, addr := testdata.KeyTestPubAddr()
	_, err := queryClient.AllBalances(gocontext.Background(), &types.QueryAllBalancesRequest{})
	suite.Require().Error(err)

	pageReq := &query.PageRequest{
		Key:        nil,
		Limit:      1,
		CountTotal: false,
	}
	req := types.NewQueryAllBalancesRequest(addr, pageReq)
	res, err := queryClient.AllBalances(gocontext.Background(), req)
	suite.Require().NoError(err)
	suite.Require().NotNil(res)
	suite.True(res.Balances.IsZero())

	fooCoins := newFooCoin(50)
	barCoins := newBarCoin(30)

	origCoins := sdk.NewCoins(fooCoins, barCoins)
	acc := app.AccountKeeper.NewAccountWithAddress(ctx, addr)

	app.AccountKeeper.SetAccount(ctx, acc)
	suite.Require().NoError(testutil.FundAccount(app.BankKeeper, ctx, acc.GetAddress(), origCoins))

	res, err = queryClient.AllBalances(gocontext.Background(), req)
	suite.Require().NoError(err)
	suite.Require().NotNil(res)
	suite.Equal(res.Balances.Len(), 1)
	suite.NotNil(res.Pagination.NextKey)

	suite.T().Log("query second page with nextkey")
	pageReq = &query.PageRequest{
		Key:        res.Pagination.NextKey,
		Limit:      1,
		CountTotal: true,
	}
	req = types.NewQueryAllBalancesRequest(addr, pageReq)
	res, err = queryClient.AllBalances(gocontext.Background(), req)
	suite.Equal(res.Balances.Len(), 1)
	suite.Nil(res.Pagination.NextKey)
}

func (suite *IntegrationTestSuite) TestQueryTotalSupply() {
	app, ctx, queryClient := suite.app, suite.ctx, suite.queryClient
	expectedTotalSupply := sdk.NewCoins(sdk.NewInt64Coin("test", 400000000))
	suite.
		Require().
		NoError(app.BankKeeper.MintCoins(ctx, minttypes.ModuleName, expectedTotalSupply))

	res, err := queryClient.TotalSupply(gocontext.Background(), &types.QueryTotalSupplyRequest{})
	suite.Require().NoError(err)
	suite.Require().NotNil(res)

	suite.Require().Equal(expectedTotalSupply, res.Supply)
}

func (suite *IntegrationTestSuite) TestQueryTotalSupplyOf() {
	app, ctx, queryClient := suite.app, suite.ctx, suite.queryClient

	test1Supply := sdk.NewInt64Coin("test1", 4000000)
	test2Supply := sdk.NewInt64Coin("test2", 700000000)
	expectedTotalSupply := sdk.NewCoins(test1Supply, test2Supply)
	suite.
		Require().
		NoError(app.BankKeeper.MintCoins(ctx, minttypes.ModuleName, expectedTotalSupply))

	_, err := queryClient.SupplyOf(gocontext.Background(), &types.QuerySupplyOfRequest{})
	suite.Require().Error(err)

	res, err := queryClient.SupplyOf(gocontext.Background(), &types.QuerySupplyOfRequest{Denom: test1Supply.Denom})
	suite.Require().NoError(err)
	suite.Require().NotNil(res)

	suite.Require().Equal(test1Supply, res.Amount)
}

func (suite *IntegrationTestSuite) TestQueryParams() {
	res, err := suite.queryClient.Params(gocontext.Background(), &types.QueryParamsRequest{})
	suite.Require().NoError(err)
	suite.Require().NotNil(res)
	suite.Require().Equal(suite.app.BankKeeper.GetParams(suite.ctx), res.GetParams())
}

func (suite *IntegrationTestSuite) QueryDenomsMetadataRequest() {
	var (
		req         *types.QueryDenomsMetadataRequest
		expMetadata = []types.Metadata{}
	)

	testCases := []struct {
		msg      string
		malleate func()
		expPass  bool
	}{
		{
			"empty pagination",
			func() {
				req = &types.QueryDenomsMetadataRequest{}
			},
			true,
		},
		{
			"success, no results",
			func() {
				req = &types.QueryDenomsMetadataRequest{
					Pagination: &query.PageRequest{
						Limit:      3,
						CountTotal: true,
					},
				}
			},
			true,
		},
		{
			"success",
			func() {
				metadataAtom := types.Metadata{
					Description: "The native staking token of the Cosmos Hub.",
					DenomUnits: []*types.DenomUnit{
						{
							Denom:    "uatom",
							Exponent: 0,
							Aliases:  []string{"microatom"},
						},
						{
							Denom:    "atom",
							Exponent: 6,
							Aliases:  []string{"ATOM"},
						},
					},
					Base:    "uatom",
					Display: "atom",
				}

				metadataEth := types.Metadata{
					Description: "Ethereum native token",
					DenomUnits: []*types.DenomUnit{
						{
							Denom:    "wei",
							Exponent: 0,
						},
						{
							Denom:    "eth",
							Exponent: 18,
							Aliases:  []string{"ETH", "ether"},
						},
					},
					Base:    "wei",
					Display: "eth",
				}

				suite.app.BankKeeper.SetDenomMetaData(suite.ctx, metadataAtom)
				suite.app.BankKeeper.SetDenomMetaData(suite.ctx, metadataEth)
				expMetadata = []types.Metadata{metadataAtom, metadataEth}
				req = &types.QueryDenomsMetadataRequest{
					Pagination: &query.PageRequest{
						Limit:      7,
						CountTotal: true,
					},
				}
			},
			true,
		},
	}

	for _, tc := range testCases {
		suite.Run(fmt.Sprintf("Case %s", tc.msg), func() {
			suite.SetupTest() // reset

			tc.malleate()
			ctx := sdk.WrapSDKContext(suite.ctx)

			res, err := suite.queryClient.DenomsMetadata(ctx, req)

			if tc.expPass {
				suite.Require().NoError(err)
				suite.Require().NotNil(res)
				suite.Require().Equal(expMetadata, res.Metadatas)
			} else {
				suite.Require().Error(err)
			}
		})
	}
}

func (suite *IntegrationTestSuite) QueryDenomMetadataRequest() {
	var (
		req         *types.QueryDenomMetadataRequest
		expMetadata = types.Metadata{}
	)

	testCases := []struct {
		msg      string
		malleate func()
		expPass  bool
	}{
		{
			"empty denom",
			func() {
				req = &types.QueryDenomMetadataRequest{}
			},
			false,
		},
		{
			"not found denom",
			func() {
				req = &types.QueryDenomMetadataRequest{
					Denom: "foo",
				}
			},
			false,
		},
		{
			"success",
			func() {
				expMetadata := types.Metadata{
					Description: "The native staking token of the Cosmos Hub.",
					DenomUnits: []*types.DenomUnit{
						{
							Denom:    "uatom",
							Exponent: 0,
							Aliases:  []string{"microatom"},
						},
						{
							Denom:    "atom",
							Exponent: 6,
							Aliases:  []string{"ATOM"},
						},
					},
					Base:    "uatom",
					Display: "atom",
				}

				suite.app.BankKeeper.SetDenomMetaData(suite.ctx, expMetadata)
				req = &types.QueryDenomMetadataRequest{
					Denom: expMetadata.Base,
				}
			},
			true,
		},
	}

	for _, tc := range testCases {
		suite.Run(fmt.Sprintf("Case %s", tc.msg), func() {
			suite.SetupTest() // reset

			tc.malleate()
			ctx := sdk.WrapSDKContext(suite.ctx)

			res, err := suite.queryClient.DenomMetadata(ctx, req)

			if tc.expPass {
				suite.Require().NoError(err)
				suite.Require().NotNil(res)
				suite.Require().Equal(expMetadata, res.Metadata)
			} else {
				suite.Require().Error(err)
			}
		})
	}
}

func (suite *IntegrationTestSuite) TestGRPCDenomOwners() {
	ctx := suite.ctx

	authKeeper, keeper := suite.initKeepersWithmAccPerms(make(map[string]bool))
	suite.Require().NoError(keeper.MintCoins(ctx, minttypes.ModuleName, initCoins))

	for i := 0; i < 10; i++ {
		acc := authKeeper.NewAccountWithAddress(ctx, authtypes.NewModuleAddress(fmt.Sprintf("account-%d", i)))
		authKeeper.SetAccount(ctx, acc)

		bal := sdk.NewCoins(sdk.NewCoin(
			sdk.DefaultBondDenom,
			sdk.TokensFromConsensusPower(initialPower/10, sdk.DefaultPowerReduction),
		))
		suite.Require().NoError(keeper.SendCoinsFromModuleToAccount(ctx, minttypes.ModuleName, acc.GetAddress(), bal))
	}

	testCases := map[string]struct {
		req      *types.QueryDenomOwnersRequest
		expPass  bool
		numAddrs int
		hasNext  bool
		total    uint64
	}{
		"empty request": {
			req:     &types.QueryDenomOwnersRequest{},
			expPass: false,
		},
		"invalid denom": {
			req: &types.QueryDenomOwnersRequest{
				Denom: "foo",
			},
			expPass:  true,
			numAddrs: 0,
			hasNext:  false,
			total:    0,
		},
		"valid request - page 1": {
			req: &types.QueryDenomOwnersRequest{
				Denom: sdk.DefaultBondDenom,
				Pagination: &query.PageRequest{
					Limit:      6,
					CountTotal: true,
				},
			},
			expPass:  true,
			numAddrs: 6,
			hasNext:  true,
			total:    10,
		},
		"valid request - page 2": {
			req: &types.QueryDenomOwnersRequest{
				Denom: sdk.DefaultBondDenom,
				Pagination: &query.PageRequest{
					Offset:     6,
					Limit:      10,
					CountTotal: true,
				},
			},
			expPass:  true,
			numAddrs: 4,
			hasNext:  false,
			total:    10,
		},
	}

	for name, tc := range testCases {
		suite.Run(name, func() {
			resp, err := suite.queryClient.DenomOwners(gocontext.Background(), tc.req)
			if tc.expPass {
				suite.NoError(err)
				suite.NotNil(resp)
				suite.Len(resp.DenomOwners, tc.numAddrs)
				suite.Equal(tc.total, resp.Pagination.Total)

				if tc.hasNext {
					suite.NotNil(resp.Pagination.NextKey)
				} else {
					suite.Nil(resp.Pagination.NextKey)
				}
			} else {
				suite.Require().Error(err)
			}
		})
	}

	suite.Require().True(true)
}