handler

type Account struct {
	UID       string    `json:"uid"`
	Currency  string    `json:"currency"`
	Balance   float64   `json:"balance"`
	CreatedAt time.Time `json:"created_at"`
}

type AccountBuilder interface {
	// SetUID initializes UID for the new account
	SetUID(uid string) AccountBuilder
	// SetBalance initializes initial balance for the new account
	SetBalance(balance float64) AccountBuilder
	// SetCurrency initializes currency for the new account
	SetCurrency(currency string) AccountBuilder

	// Build actually creates new account
	Build(ctx context.Context) (*Account, error)
}

type AccountManager interface {
	// AllAccounts return all available accounts in the system
	AllAccounts(ctx context.Context) ([]Account, error)
	// AllPayments return all available payments in the system
	AllPayments(ctx context.Context) ([]Payment, error)

	// AccountBuilder instantiate new account builder
	AccountBuilder() AccountBuilder
	// PaymentBuilder instantiate new payment builder
	PaymentBuilder() PaymentBuilder
}

type AccountRequest struct {
	UID      string  `json:"uid"`
	Currency string  `json:"currency"`
	Balance  float64 `json:"balance"`
}

type Error struct {
	Kind ErrorKind
	// contains filtered or unexported fields
}

type ErrorKind int8

type Payment struct {
	UID       string    `json:"account"`
	SourceUID *string   `json:"from_account,omitempty"`
	TargetUID *string   `json:"to_account,omitempty"`
	Direction string    `json:"direction"`
	Amount    float64   `json:"amount"`
	CreatedAt time.Time `json:"created_at"`
}

type PaymentBuilder interface {
	// SetAmount initializes amount for the new payment
	SetAmount(amount float64) PaymentBuilder
	// SetPayer initializes payer for the new payment
	SetPayer(uid string) PaymentBuilder
	// SetRecipient initializes recipient for the new payment
	SetRecipient(uid string) PaymentBuilder

	// Build actually creates new payment
	Build(ctx context.Context) (*Payment, error)
}

type PaymentRequest struct {
	RecipientUID string  `json:"recipient"`
	Amount       float64 `json:"amount"`
}

type ServerStatusResponse struct {
	IsAlive   bool   `json:"is_alive"`
	BuildTime string `json:"build_time"`
	Version   string `json:"version"`
}