package cli

import (
	"context"
	"fmt"

	"github.com/spf13/cobra"

	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/flags"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/version"

	"github.com/0glabs/0g-chain/x/savings/types"
)

// flags for cli queries
const (
	flagDenom = "denom"
	flagOwner = "owner"
)

// GetQueryCmd returns the cli query commands for this module
func GetQueryCmd() *cobra.Command {
	savingsQueryCmd := &cobra.Command{
		Use:                        types.ModuleName,
		Short:                      "Querying commands for the savings module",
		DisableFlagParsing:         true,
		SuggestionsMinimumDistance: 2,
		RunE:                       client.ValidateCmd,
	}

	cmds := []*cobra.Command{
		GetCmdQueryParams(),
		queryDepositsCmd(),
		GetCmdTotalSupply(),
	}

	for _, cmd := range cmds {
		flags.AddQueryFlagsToCmd(cmd)
	}

	savingsQueryCmd.AddCommand(cmds...)

	return savingsQueryCmd
}

// GetCmdQueryParams queries the savings module parameters
func GetCmdQueryParams() *cobra.Command {
	return &cobra.Command{
		Use:   "params",
		Short: "get the savings module parameters",
		Long:  "Get the current global savings module parameters.",
		Args:  cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			clientCtx, err := client.GetClientQueryContext(cmd)
			if err != nil {
				return err
			}

			queryClient := types.NewQueryClient(clientCtx)

			res, err := queryClient.Params(context.Background(), &types.QueryParamsRequest{})
			if err != nil {
				return err
			}

			return clientCtx.PrintProto(&res.Params)
		},
	}
}

func queryDepositsCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "deposits",
		Short: "query savings module deposits with optional filters",
		Long:  "query for all savings module deposits or a specific deposit using flags",
		Example: fmt.Sprintf(`%[1]s q %[2]s deposits
%[1]s q %[2]s deposits --owner kava1l0xsq2z7gqd7yly0g40y5836g0appumark77ny --denom bnb
%[1]s q %[2]s deposits --denom ukava
%[1]s q %[2]s deposits --denom btcb`, version.AppName, types.ModuleName),
		Args: cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			clientCtx, err := client.GetClientQueryContext(cmd)
			if err != nil {
				return err
			}

			ownerBech, err := cmd.Flags().GetString(flagOwner)
			if err != nil {
				return err
			}
			denom, err := cmd.Flags().GetString(flagDenom)
			if err != nil {
				return err
			}

			pageReq, err := client.ReadPageRequest(cmd.Flags())
			if err != nil {
				return err
			}

			req := &types.QueryDepositsRequest{
				Denom:      denom,
				Pagination: pageReq,
			}

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

			queryClient := types.NewQueryClient(clientCtx)

			res, err := queryClient.Deposits(context.Background(), req)
			if err != nil {
				return err
			}

			return clientCtx.PrintProto(res)
		},
	}

	flags.AddPaginationFlagsToCmd(cmd, "deposits")

	cmd.Flags().String(flagOwner, "", "(optional) filter for deposits by owner address")
	cmd.Flags().String(flagDenom, "", "(optional) filter for deposits by denom")

	return cmd
}

// GetCmdTotalSupply returns the command that queries total supply locked into savings module
func GetCmdTotalSupply() *cobra.Command {
	return &cobra.Command{
		Use:   "total-supply",
		Short: "get total supply locked into savings module",
		Long:  "Get the sum of all denoms locked into the savings module.",
		Args:  cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			clientCtx, err := client.GetClientQueryContext(cmd)
			if err != nil {
				return err
			}

			queryClient := types.NewQueryClient(clientCtx)

			res, err := queryClient.TotalSupply(context.Background(), &types.QueryTotalSupplyRequest{})
			if err != nil {
				return err
			}

			return clientCtx.PrintProto(res)
		},
	}
}