package cli

import (
	"fmt"
	"strings"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/context"
	"github.com/cosmos/cosmos-sdk/client/flags"
	"github.com/cosmos/cosmos-sdk/codec"
	sdk "github.com/cosmos/cosmos-sdk/types"
	supplyexported "github.com/cosmos/cosmos-sdk/x/supply/exported"

	"github.com/kava-labs/kava/x/hvt/types"
)

// flags for cli queries
const (
	flagName         = "name"
	flagDepositDenom = "deposit-denom"
	flagOwner        = "owner"
	flagDepositType  = "deposit-type"
)

// GetQueryCmd returns the cli query commands for the harvest module
func GetQueryCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
	harvestQueryCmd := &cobra.Command{
		Use:                        types.ModuleName,
		Short:                      "Querying commands for the harvest module",
		DisableFlagParsing:         true,
		SuggestionsMinimumDistance: 2,
		RunE:                       client.ValidateCmd,
	}

	harvestQueryCmd.AddCommand(flags.GetCommands(
		queryParamsCmd(queryRoute, cdc),
		queryModAccountsCmd(queryRoute, cdc),
		queryDepositsCmd(queryRoute, cdc),
		queryClaimsCmd(queryRoute, cdc),
	)...)

	return harvestQueryCmd

}

func queryParamsCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
	return &cobra.Command{
		Use:   "params",
		Short: "get the harvest module parameters",
		Long:  "Get the current global harvest module parameters.",
		Args:  cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			cliCtx := context.NewCLIContext().WithCodec(cdc)

			// Query
			route := fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryGetParams)
			res, height, err := cliCtx.QueryWithData(route, nil)
			if err != nil {
				return err
			}
			cliCtx = cliCtx.WithHeight(height)

			// Decode and print results
			var params types.Params
			if err := cdc.UnmarshalJSON(res, &params); err != nil {
				return fmt.Errorf("failed to unmarshal params: %w", err)
			}
			return cliCtx.PrintOutput(params)
		},
	}
}

func queryModAccountsCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
	return &cobra.Command{
		Use:   "accounts",
		Short: "query harvest module accounts with optional filter",
		Long: strings.TrimSpace(`Query for all harvest module accounts or a specific account using the name flag:

		Example:
		$ kvcli q harvest accounts
		$ kvcli q harvest accounts --name harvest|harvest_delegator_distribution|harvest_lp_distribution`,
		),
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			cliCtx := context.NewCLIContext().WithCodec(cdc)

			name := viper.GetString(flagName)
			page := viper.GetInt(flags.FlagPage)
			limit := viper.GetInt(flags.FlagLimit)

			params := types.NewQueryAccountParams(page, limit, name)
			bz, err := cdc.MarshalJSON(params)
			if err != nil {
				return err
			}

			route := fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryGetModuleAccounts)
			res, height, err := cliCtx.QueryWithData(route, bz)
			if err != nil {
				return err
			}
			cliCtx = cliCtx.WithHeight(height)

			var modAccounts []supplyexported.ModuleAccountI
			if err := cdc.UnmarshalJSON(res, &modAccounts); err != nil {
				return fmt.Errorf("failed to unmarshal module accounts: %w", err)
			}
			return cliCtx.PrintOutput(modAccounts)
		},
	}
}

func queryDepositsCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
	return &cobra.Command{
		Use:   "deposits",
		Short: "query harvest module deposits with optional filters",
		Long: strings.TrimSpace(`query for all harvest module deposits or a specific deposit using flags:

		Example:
		$ kvcli q harvest deposits
		$ kvcli q harvest deposits --owner kava1l0xsq2z7gqd7yly0g40y5836g0appumark77ny --deposit-type lp --deposit-denom bnb
		$ kvcli q harvest deposits --deposit-type stake --deposit-denom ukava
		$ kvcli q harvest deposits --deposit-denom btcb`,
		),
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			cliCtx := context.NewCLIContext().WithCodec(cdc)

			var owner sdk.AccAddress
			var depositType types.DepositType

			ownerBech := viper.GetString(flagOwner)
			depositDenom := viper.GetString(flagDepositDenom)
			depositTypeStr := viper.GetString(flagDepositType)

			if len(ownerBech) != 0 {
				depositOwner, err := sdk.AccAddressFromBech32(ownerBech)
				if err != nil {
					return err
				}
				owner = depositOwner
			}

			if len(depositTypeStr) != 0 {
				if err := types.DepositType(depositTypeStr).IsValid(); err != nil {
					return err
				}
				depositType = types.DepositType(depositTypeStr)
			}

			page := viper.GetInt(flags.FlagPage)
			limit := viper.GetInt(flags.FlagLimit)

			params := types.NewQueryDepositParams(page, limit, depositDenom, owner, depositType)
			bz, err := cdc.MarshalJSON(params)
			if err != nil {
				return err
			}

			route := fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryGetDeposits)
			res, height, err := cliCtx.QueryWithData(route, bz)
			if err != nil {
				return err
			}
			cliCtx = cliCtx.WithHeight(height)

			var deposits []types.Deposit
			if err := cdc.UnmarshalJSON(res, &deposits); err != nil {
				return fmt.Errorf("failed to unmarshal deposits: %w", err)
			}
			return cliCtx.PrintOutput(deposits)
		},
	}
}

func queryClaimsCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
	return &cobra.Command{
		Use:   "claims",
		Short: "query harvest module claims with optional filters",
		Long: strings.TrimSpace(`query for all harvest module claims or a specific claim using flags:

		Example:
		$ kvcli q harvest claims
		$ kvcli q harvest claims --owner kava1l0xsq2z7gqd7yly0g40y5836g0appumark77ny --deposit-type lp --deposit-denom bnb
		$ kvcli q harvest claims --deposit-type stake --deposit-denom ukava
		$ kvcli q harvest claims --deposit-denom btcb`,
		),
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			cliCtx := context.NewCLIContext().WithCodec(cdc)

			var owner sdk.AccAddress
			var depositType types.DepositType

			ownerBech := viper.GetString(flagOwner)
			depositDenom := viper.GetString(flagDepositDenom)
			depositTypeStr := viper.GetString(flagDepositType)

			if len(ownerBech) != 0 {
				claimOwner, err := sdk.AccAddressFromBech32(ownerBech)
				if err != nil {
					return err
				}
				owner = claimOwner
			}

			if len(depositTypeStr) != 0 {
				if err := types.DepositType(depositTypeStr).IsValid(); err != nil {
					return err
				}
				depositType = types.DepositType(depositTypeStr)
			}

			page := viper.GetInt(flags.FlagPage)
			limit := viper.GetInt(flags.FlagLimit)

			params := types.NewQueryDepositParams(page, limit, depositDenom, owner, depositType)
			bz, err := cdc.MarshalJSON(params)
			if err != nil {
				return err
			}

			route := fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryGetClaims)
			res, height, err := cliCtx.QueryWithData(route, bz)
			if err != nil {
				return err
			}
			cliCtx = cliCtx.WithHeight(height)

			var claims []types.Claim
			if err := cdc.UnmarshalJSON(res, &claims); err != nil {
				return fmt.Errorf("failed to unmarshal claims: %w", err)
			}
			return cliCtx.PrintOutput(claims)
		},
	}
}