params.go

package types

import (
	"errors"
	"fmt"
	"strings"

	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
	"gopkg.in/yaml.v2"
)

var _ paramtypes.ParamSet = (*Params)(nil)

var KeyDepositAccount = []byte("DepositAccount")

// ParamKeyTable the param key table for launch module
func ParamKeyTable() paramtypes.KeyTable {
	return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}

// NewParams creates a new Params instance
func NewParams() Params {
	return Params{
		DepositAccount: "cosmos1arsaayyj5tash86mwqudmcs2fd5jt5zgp07gl8",
	}
}

// DefaultParams returns a default set of parameters
func DefaultParams() Params {
	return NewParams()
}

// ParamSetPairs get the params.ParamSet
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
	return paramtypes.ParamSetPairs{
		paramtypes.NewParamSetPair(KeyDepositAccount, &p.DepositAccount, validateDeposit),
	}
}

func validateDeposit(i interface{}) error {
	v, ok := i.(string)
	if !ok {
		return fmt.Errorf("invalid parameter type: %T", i)
	}

	if strings.TrimSpace(v) == "" {
		return errors.New("deposit cannot be blank")
	}

	return nil
}

// Validate validates the set of params
func (p Params) Validate() error {
	return nil
}

// String implements the Stringer interface.
func (p Params) String() string {
	out, _ := yaml.Marshal(p)
	return string(out)
}