23 lines
505 B
Go
23 lines
505 B
Go
package ledger
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import (
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"context"
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"errors"
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)
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type (
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ID string
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Money int64
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)
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var ErrNoMoney = errors.New("no money")
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var ErrNegativeAmount = errors.New("negative amount")
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type Ledger interface {
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CreateAccount(ctx context.Context, id ID) error
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GetBalance(ctx context.Context, id ID) (Money, error)
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Deposit(ctx context.Context, id ID, amount Money) error
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Withdraw(ctx context.Context, id ID, amount Money) error
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Transfer(ctx context.Context, from, to ID, amount Money) error
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Close() error
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}
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