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package database
import (
"git.adyxax.org/adyxax/trains/pkg/model"
)
// Creates a new user in the database
// a QueryError is return if the username already exists (database constraints not met)
func (env *DBEnv) CreateUser(reg *model.UserRegistration) (*model.User, error) {
hash, err := hashPassword(reg.Password)
if err != nil {
return nil, err
}
query := `
INSERT INTO users
(username, hash, email)
VALUES
($1, $2, $3);`
tx, err := env.db.Begin()
if err != nil {
return nil, newTransactionError("Could not Begin()", err)
}
result, err := tx.Exec(
query,
reg.Username,
hash,
reg.Email,
)
if err != nil {
tx.Rollback()
return nil, newQueryError("Could not run database query, most likely the username already exists", err)
}
id, err := result.LastInsertId()
if err != nil {
tx.Rollback()
return nil, newTransactionError("Could not get LastInsertId, the database driver does not support this feature", err)
}
if err := tx.Commit(); err != nil {
return nil, newTransactionError("Could not commit transaction", err)
}
user := model.User{
Id: int(id),
Username: reg.Username,
Email: reg.Email,
}
return &user, nil
}
// Login logs a user in if the password matches the hash in database
// a PasswordError is return if the passwords do not match
// a QueryError is returned if the username contains invalid sql characters like %
func (env *DBEnv) Login(login *model.UserLogin) (*model.User, error) {
query := `SELECT id, hash, email FROM users WHERE username = $1;`
user := model.User{Username: login.Username}
var hash string
err := env.db.QueryRow(
query,
login.Username,
).Scan(
&user.Id,
&hash,
&user.Email,
)
if err != nil {
return nil, newQueryError("Could not run database query", err)
}
err = checkPassword(hash, login.Password)
if err != nil {
return nil, err
}
return &user, nil
}
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