package rest_test

import (
	"fmt"
	"testing"

	"github.com/gogo/protobuf/proto"
	"github.com/stretchr/testify/suite"

	"github.com/cosmos/cosmos-sdk/testutil"
	"github.com/cosmos/cosmos-sdk/testutil/network"
	sdk "github.com/cosmos/cosmos-sdk/types"
	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
	"github.com/cosmos/cosmos-sdk/types/query"
	"github.com/cosmos/cosmos-sdk/types/rest"
	"github.com/cosmos/cosmos-sdk/x/distribution/types"
)

type IntegrationTestSuite struct {
	suite.Suite

	cfg     network.Config
	network *network.Network
}

func (s *IntegrationTestSuite) SetupSuite() {
	s.T().Log("setting up integration test suite")

	cfg := network.DefaultConfig()
	cfg.NumValidators = 1

	s.cfg = cfg
	s.network = network.New(s.T(), cfg)

	_, err := s.network.WaitForHeight(1)
	s.Require().NoError(err)
}

func (s *IntegrationTestSuite) TestQueryParamsGRPC() {
	val := s.network.Validators[0]
	baseURL := val.APIAddress

	testCases := []struct {
		name     string
		url      string
		respType proto.Message
		expected proto.Message
	}{
		{
			"gRPC request params",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/params", baseURL),
			&types.QueryParamsResponse{},
			&types.QueryParamsResponse{
				Params: types.DefaultParams(),
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := rest.GetRequest(tc.url)
		s.Run(tc.name, func() {
			s.Require().NoError(err)
			s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			s.Require().Equal(tc.expected, tc.respType)
		})
	}
}

func (s *IntegrationTestSuite) TestQueryOutstandingRewardsGRPC() {
	val := s.network.Validators[0]
	baseURL := val.APIAddress

	rewards, err := sdk.ParseDecCoins("19.6stake")
	s.Require().NoError(err)

	testCases := []struct {
		name     string
		url      string
		headers  map[string]string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"gRPC request params with wrong validator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/outstanding_rewards", baseURL, "wrongAddress"),
			map[string]string{},
			true,
			&types.QueryValidatorOutstandingRewardsResponse{},
			&types.QueryValidatorOutstandingRewardsResponse{},
		},
		{
			"gRPC request params valid address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/outstanding_rewards", baseURL, val.ValAddress.String()),
			map[string]string{
				grpctypes.GRPCBlockHeightHeader: "2",
			},
			false,
			&types.QueryValidatorOutstandingRewardsResponse{},
			&types.QueryValidatorOutstandingRewardsResponse{
				Rewards: types.ValidatorOutstandingRewards{
					Rewards: rewards,
				},
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := testutil.GetRequestWithHeaders(tc.url, tc.headers)
		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQueryValidatorCommissionGRPC() {
	val := s.network.Validators[0]
	baseURL := val.APIAddress

	commission, err := sdk.ParseDecCoins("9.8stake")
	s.Require().NoError(err)

	testCases := []struct {
		name     string
		url      string
		headers  map[string]string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"gRPC request params with wrong validator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/commission", baseURL, "wrongAddress"),
			map[string]string{},
			true,
			&types.QueryValidatorCommissionResponse{},
			&types.QueryValidatorCommissionResponse{},
		},
		{
			"gRPC request params valid address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/commission", baseURL, val.ValAddress.String()),
			map[string]string{
				grpctypes.GRPCBlockHeightHeader: "2",
			},
			false,
			&types.QueryValidatorCommissionResponse{},
			&types.QueryValidatorCommissionResponse{
				Commission: types.ValidatorAccumulatedCommission{
					Commission: commission,
				},
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := testutil.GetRequestWithHeaders(tc.url, tc.headers)
		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQuerySlashesGRPC() {
	val := s.network.Validators[0]
	baseURL := val.APIAddress

	testCases := []struct {
		name     string
		url      string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"invalid validator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/slashes", baseURL, ""),
			true,
			&types.QueryValidatorSlashesResponse{},
			nil,
		},
		{
			"invalid start height",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/slashes?starting_height=%s&ending_height=%s", baseURL, val.ValAddress.String(), "-1", "3"),
			true,
			&types.QueryValidatorSlashesResponse{},
			nil,
		},
		{
			"invalid start height",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/slashes?starting_height=%s&ending_height=%s", baseURL, val.ValAddress.String(), "1", "-3"),
			true,
			&types.QueryValidatorSlashesResponse{},
			nil,
		},
		{
			"valid request get slashes",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/validators/%s/slashes?starting_height=%s&ending_height=%s", baseURL, val.ValAddress.String(), "1", "3"),
			false,
			&types.QueryValidatorSlashesResponse{},
			&types.QueryValidatorSlashesResponse{
				Pagination: &query.PageResponse{},
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := rest.GetRequest(tc.url)

		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQueryDelegatorRewardsGRPC() {
	val := s.network.Validators[0]
	baseUrl := val.APIAddress

	rewards, err := sdk.ParseDecCoins("9.8stake")
	s.Require().NoError(err)

	testCases := []struct {
		name     string
		url      string
		headers  map[string]string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"wrong delegator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/rewards", baseUrl, "wrongDelegatorAddress"),
			map[string]string{},
			true,
			&types.QueryDelegationTotalRewardsResponse{},
			nil,
		},
		{
			"valid request",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/rewards", baseUrl, val.Address.String()),
			map[string]string{
				grpctypes.GRPCBlockHeightHeader: "2",
			},
			false,
			&types.QueryDelegationTotalRewardsResponse{},
			&types.QueryDelegationTotalRewardsResponse{
				Rewards: []types.DelegationDelegatorReward{
					types.NewDelegationDelegatorReward(val.ValAddress, rewards),
				},
				Total: rewards,
			},
		},
		{
			"wrong validator address(specific validator rewards)",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/rewards/%s", baseUrl, val.Address.String(), "wrongValAddress"),
			map[string]string{},
			true,
			&types.QueryDelegationTotalRewardsResponse{},
			nil,
		},
		{
			"valid request(specific validator rewards)",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/rewards/%s", baseUrl, val.Address.String(), val.ValAddress.String()),
			map[string]string{
				grpctypes.GRPCBlockHeightHeader: "2",
			},
			false,
			&types.QueryDelegationRewardsResponse{},
			&types.QueryDelegationRewardsResponse{
				Rewards: rewards,
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := testutil.GetRequestWithHeaders(tc.url, tc.headers)

		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQueryDelegatorValidatorsGRPC() {
	val := s.network.Validators[0]
	baseUrl := val.APIAddress

	testCases := []struct {
		name     string
		url      string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"empty delegator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/validators", baseUrl, ""),
			true,
			&types.QueryDelegatorValidatorsResponse{},
			nil,
		},
		{
			"wrong delegator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/validators", baseUrl, "wrongDelegatorAddress"),
			true,
			&types.QueryDelegatorValidatorsResponse{},
			nil,
		},
		{
			"valid request",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/validators", baseUrl, val.Address.String()),
			false,
			&types.QueryDelegatorValidatorsResponse{},
			&types.QueryDelegatorValidatorsResponse{
				Validators: []string{val.ValAddress.String()},
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := rest.GetRequest(tc.url)

		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQueryWithdrawAddressGRPC() {
	val := s.network.Validators[0]
	baseUrl := val.APIAddress

	testCases := []struct {
		name     string
		url      string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"empty delegator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/withdraw_address", baseUrl, ""),
			true,
			&types.QueryDelegatorWithdrawAddressResponse{},
			nil,
		},
		{
			"wrong delegator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/withdraw_address", baseUrl, "wrongDelegatorAddress"),
			true,
			&types.QueryDelegatorWithdrawAddressResponse{},
			nil,
		},
		{
			"valid request",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/delegators/%s/withdraw_address", baseUrl, val.Address.String()),
			false,
			&types.QueryDelegatorWithdrawAddressResponse{},
			&types.QueryDelegatorWithdrawAddressResponse{
				WithdrawAddress: val.Address.String(),
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := rest.GetRequest(tc.url)

		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func (s *IntegrationTestSuite) TestQueryValidatorCommunityPoolGRPC() {
	val := s.network.Validators[0]
	baseURL := val.APIAddress

	communityPool, err := sdk.ParseDecCoins("0.4stake")
	s.Require().NoError(err)

	testCases := []struct {
		name     string
		url      string
		headers  map[string]string
		expErr   bool
		respType proto.Message
		expected proto.Message
	}{
		{
			"gRPC request params with wrong validator address",
			fmt.Sprintf("%s/cosmos/distribution/v1beta1/community_pool", baseURL),
			map[string]string{
				grpctypes.GRPCBlockHeightHeader: "2",
			},
			false,
			&types.QueryCommunityPoolResponse{},
			&types.QueryCommunityPoolResponse{
				Pool: communityPool,
			},
		},
	}

	for _, tc := range testCases {
		tc := tc
		resp, err := testutil.GetRequestWithHeaders(tc.url, tc.headers)

		s.Run(tc.name, func() {
			if tc.expErr {
				s.Require().Error(err)
			} else {
				s.Require().NoError(err)
				s.Require().NoError(val.ClientCtx.JSONMarshaler.UnmarshalJSON(resp, tc.respType))
				s.Require().Equal(tc.expected.String(), tc.respType.String())
			}
		})
	}
}

func TestIntegrationTestSuite(t *testing.T) {
	suite.Run(t, new(IntegrationTestSuite))
}