initial commit

services/database/database.go

@@ -0,0 +1,64 @@
+package database
+
+import (
+	"fmt"
+	"phc/website/model"
+	"phc/website/sl"
+)
+
+type Database interface {
+	sl.Service
+
+	CreateUser(user model.User) error
+	ReadUser(id string) (model.User, error)
+	ReadUsers() ([]model.User, error)
+	UpdateUser(id string, user model.User) error
+	DeleteUser(id string) error
+}
+
+type Memory struct {
+	Users []model.User
+}
+
+func (m *Memory) Initialize(l *sl.ServiceLocator) error { return nil }
+
+func (m *Memory) CreateUser(user model.User) error {
+	m.Users = append(m.Users, user)
+	return nil
+}
+
+func (m *Memory) ReadUser(id string) (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(id string, user model.User) error {
+	for i, u := range m.Users {
+		if u.Id == id {
+			m.Users[i] = user
+			return nil
+		}
+	}
+
+	return fmt.Errorf(`no user with id "%s"`, id)
+}
+
+func (m *Memory) DeleteUser(id string) 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)
+}