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path: root/password.go
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package main

import (
	"database/sql"

	_ "github.com/mattn/go-sqlite3"
	"golang.org/x/crypto/bcrypt"
)

const (
	bcryptCost = 12
)

func Register(db *sql.DB, username, password string) error {
	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcryptCost)
	if err != nil {
		return err
	}

	err = Transaction(db, func(tx *sql.Tx) error {
		_, err := tx.Exec(
			`INSERT INTO users (username, password_bcrypt) VALUES(?, ?);`,
			username,
			hash,
		)
		return err
	})

	return err
}