114 lines
2.3 KiB
Go
114 lines
2.3 KiB
Go
package db
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import (
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"database/sql"
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"fmt"
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"github.com/google/uuid"
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)
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type User struct {
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Id string
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Name string
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}
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type Gift struct {
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Id string
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Name string
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}
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func GetUser(username string) (*User, error) {
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stmt := "SELECT user.id, user.name FROM user WHERE user.name = ?"
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var id string
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var name string
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err := database.QueryRow(stmt, username).Scan(&id, &name)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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user := User{
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Id: id,
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Name: name,
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}
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return &user, nil
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}
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func CreateUser(username string, passHash []byte) (*User, error) {
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stmt := "INSERT INTO user (name, motto, reference, password_hash) VALUES (?, '', ?, ?)"
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reference, err := uuid.NewRandom()
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if err != nil {
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return nil, err
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}
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result, err := database.Exec(stmt, username, reference, passHash)
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if err != nil {
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return nil, err
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}
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id, err := result.LastInsertId()
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if err != nil {
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return nil, err
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}
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user := User{
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Id: fmt.Sprintf("%d", id),
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Name: username,
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}
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return &user, nil
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}
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func (u *User) GetPassHash() ([]byte, error) {
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stmt := "SELECT user.password_hash FROM user WHERE user.id = ?"
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var passHash string
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err := database.QueryRow(stmt, u.Id).Scan(&passHash)
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if err != nil {
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return nil, err
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}
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return []byte(passHash), nil
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}
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func (u *User) GetGifts() ([]Gift, error) {
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stmt := "SELECT gift.id, gift.name FROM gift JOIN user ON gift.recipient_id = user.id WHERE user.id = ?"
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rows, err := database.Query(stmt, u.Id)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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gifts := []Gift{}
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for rows.Next() {
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var id string
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var name string
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rows.Scan(&id, &name)
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gift := Gift{
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Id: id,
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Name: name,
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}
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gifts = append(gifts, gift)
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}
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err = rows.Err()
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if err != nil {
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return nil, err
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}
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return gifts, nil
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}
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func (u *User) AddGift(name string) error {
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stmt := "INSERT INTO gift (name, recipient_id, creator_id) VALUES (?, ?, ?)"
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_, err := database.Exec(stmt, name, u.Id, u.Id)
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if err != nil {
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return err
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}
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return nil
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}
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func (u *User) RemoveGift(id string) error {
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stmt := "DELETE FROM gift WHERE gift.creator_id = ? AND gift.id = ?"
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result, err := database.Exec(stmt, u.Id, id)
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if err != nil {
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return err
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}
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affected, _ := result.RowsAffected()
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if affected == 0 {
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return fmt.Errorf("No gift match.")
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}
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return nil
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}
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