package config

import (
	"fmt"

	sdk "github.com/cosmos/cosmos-sdk/types"
)

const (
	defaultMinGasPrices = ""
)

// BaseConfig defines the server's basic configuration
type BaseConfig struct {
	// The minimum gas prices a validator is willing to accept for processing a
	// transaction. A transaction's fees must meet the minimum of any denomination
	// specified in this config (e.g. 0.01photino;0.0001stake).
	MinGasPrices string `mapstructure:"minimum-gas-prices"`
}

// Config defines the server's top level configuration
type Config struct {
	BaseConfig `mapstructure:",squash"`
}

// SetMinGasPrices sets the validator's minimum gas prices.
func (c *Config) SetMinGasPrices(gasPrices sdk.DecCoins) {
	c.MinGasPrices = gasPrices.String()
}

// GetMinGasPrices returns the validator's minimum gas prices based on the set
// configuration.
func (c *Config) GetMinGasPrices() sdk.DecCoins {
	gasPrices, err := sdk.ParseDecCoins(c.MinGasPrices)
	if err != nil {
		panic(fmt.Sprintf("invalid minimum gas prices: %v", err))
	}

	return gasPrices
}

// DefaultConfig returns server's default configuration.
func DefaultConfig() *Config {
	return &Config{
		BaseConfig{
			MinGasPrices: defaultMinGasPrices,
		},
	}
}