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website/server/database/database.go

83 lines
1.8 KiB
Go

package database
import (
"fmt"
"git.phc.dm.unipi.it/phc/website/libs/db"
"git.phc.dm.unipi.it/phc/website/libs/sl"
"git.phc.dm.unipi.it/phc/website/server/model"
)
var Slot = sl.NewSlot[Database]()
// Database is the main database service interface
type Database interface {
// User
CreateUser(user model.User) error
ReadUser(id db.Ref[model.User]) (model.User, error)
ReadUsers() ([]model.User, error)
UpdateUser(user model.User) error
DeleteUser(id db.Ref[model.User]) error
// Accounts
CreateAccount(account model.Account) (db.Ref[model.Account], error)
ReadAccount(id db.Ref[model.Account]) (model.Account, error)
UpdateAccount(user model.Account) error
DeleteAccount(id db.Ref[model.Account]) error
// Users & Accounts
ReadUserAccounts(user db.Ref[model.User]) ([]model.Account, error)
}
// Memory is an in-memory implementation of [Database] that can be used for testing
type Memory struct {
Database // TODO: Per ora almeno così facciamo compilare il codice
Users []model.User
}
func (m *Memory) CreateUser(user model.User) error {
m.Users = append(m.Users, user)
return nil
}
func (m *Memory) ReadUser(id db.Ref[model.User]) (model.User, error) {
for _, u := range m.Users {
if u.Id == id {
return u, nil
}
}
return model.User{}, fmt.Errorf(`no user with id "%s"`, id)
}
func (m *Memory) ReadUsers() ([]model.User, error) {
return m.Users, nil
}
func (m *Memory) UpdateUser(user model.User) error {
for i, u := range m.Users {
if u.Id == user.Id {
m.Users[i] = user
return nil
}
}
return fmt.Errorf(`no user with id "%s"`, user.Id)
}
func (m *Memory) DeleteUser(id db.Ref[model.User]) error {
for i, u := range m.Users {
if u.Id == id {
m.Users = append(m.Users[:i], m.Users[i+1:]...)
return nil
}
}
return fmt.Errorf(`no user with id "%s"`, id)
}