package cmd

import (
	"context"
	"fmt"
	"os"

	"github.com/pkg/errors"
	log "github.com/sirupsen/logrus"
	"github.com/spf13/cobra"

	"github.com/c9s/bbgo/pkg/bbgo"
)

func init() {
	balancesCmd.Flags().String("session", "", "the exchange session name for querying balances")
	RootCmd.AddCommand(balancesCmd)
}

// go run ./cmd/bbgo balances --session=ftx
var balancesCmd = &cobra.Command{
	Use:          "balances",
	SilenceUsage: true,
	RunE: func(cmd *cobra.Command, args []string) error {
		ctx := context.Background()

		configFile, err := cmd.Flags().GetString("config")
		if err != nil {
			return err
		}

		if len(configFile) == 0 {
			return errors.New("--config option is required")
		}

		if _, err := os.Stat(configFile); os.IsNotExist(err) {
			return err
		}

		userConfig, err := bbgo.Load(configFile, false)
		if err != nil {
			return err
		}


		environ := bbgo.NewEnvironment()
		if err := environ.ConfigureDatabase(ctx) ; err != nil {
			return err
		}

		if err := environ.ConfigureExchangeSessions(userConfig); err != nil {
			return err
		}

		sessionName, err := cmd.Flags().GetString("session")
		if err != nil {
			return err
		}

		session, ok := environ.Session(sessionName)
		if !ok {
			return fmt.Errorf("session %s not found", sessionName)
		}

		b, err := session.Exchange.QueryAccountBalances(ctx)
		if err != nil {
			return err
		}

		log.Infof("balances: %+v", b)
		return nil
	},
}