/
inmemory_db.go
188 lines (158 loc) · 4.28 KB
/
inmemory_db.go
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package db
import (
"log"
"github.com/2beens/ispend/internal/models"
"github.com/2beens/ispend/internal/platform"
)
type InMemoryDB struct {
DefaultSpendKinds []models.SpendKind
Users models.Users
}
func NewInMemoryDB() *InMemoryDB {
inMemDB := &InMemoryDB{
DefaultSpendKinds: []models.SpendKind{},
Users: models.Users{},
}
inMemDB.prepareDebuggingData()
return inMemDB
}
func (db *InMemoryDB) Open() error {
return nil
}
func (db *InMemoryDB) Close() error {
return nil
}
func (db *InMemoryDB) StoreDefaultSpendKind(kind models.SpendKind) (int, error) {
db.DefaultSpendKinds = append(db.DefaultSpendKinds, kind)
return kind.ID, nil
}
func (db *InMemoryDB) GetAllDefaultSpendKinds() ([]models.SpendKind, error) {
return db.DefaultSpendKinds, nil
}
func (db *InMemoryDB) GetSpendKind(username string, spendingKindID int) (*models.SpendKind, error) {
user, err := db.GetUser(username, true)
if err != nil {
return nil, err
}
for _, sk := range user.SpendKinds {
if sk.ID == spendingKindID {
return &sk, nil
}
}
return nil, platform.ErrNotFound
}
func (db *InMemoryDB) GetSpendKinds(username string) ([]models.SpendKind, error) {
user, err := db.GetUser(username, true)
if err != nil {
return nil, err
}
return user.SpendKinds, nil
}
func (db *InMemoryDB) StoreSpendKind(username string, kind *models.SpendKind) (int, error) {
user, err := db.GetUser(username, true)
if err != nil {
return -1, err
}
user.SpendKinds = append(user.SpendKinds, *kind)
return -1, nil
}
func (db *InMemoryDB) StoreUser(user *models.User) (int, error) {
db.Users = append(db.Users, user)
return 0, nil
}
func (db *InMemoryDB) GetUser(username string, loadAllData bool) (*models.User, error) {
for i := range db.Users {
if db.Users[i].Username == username {
return db.Users[i], nil
}
}
return nil, platform.ErrNotFound
}
func (db *InMemoryDB) GetAllUsers(loadAllUserData bool) (models.Users, error) {
return db.Users, nil
}
func (db *InMemoryDB) StoreSpending(username string, spending models.Spending) (string, error) {
user, err := db.GetUser(username, true)
if err != nil {
return "", err
}
user.Spends = append(user.Spends, spending)
return platform.GenerateRandomString(10), nil
}
func (db *InMemoryDB) GetSpends(username string) ([]models.Spending, error) {
user, err := db.GetUser(username, true)
if err != nil {
return nil, err
}
return user.Spends, nil
}
func (db *InMemoryDB) DeleteSpending(username, spendID string) error {
user, err := db.GetUser(username, true)
if err != nil {
return err
}
indexToRemove := -1
for i := range user.Spends {
if user.Spends[i].ID == spendID {
indexToRemove = i
break
}
}
if indexToRemove < 0 {
return platform.ErrNotFound
}
// remove spending by its index
user.Spends = append(user.Spends[:indexToRemove], user.Spends[indexToRemove+1:]...)
return nil
}
func (db *InMemoryDB) prepareDebuggingData() {
skNightlife := models.SpendKind{ID: 1, Name: "nightlife"}
skTravel := models.SpendKind{ID: 2, Name: "travel"}
skFood := models.SpendKind{ID: 3, Name: "food"}
skRent := models.SpendKind{ID: 4, Name: "rent"}
defSpendKinds := []models.SpendKind{skNightlife, skTravel, skFood, skRent}
adminUser := models.NewUser("admin@serjspends.de", "admin", "admin1", defSpendKinds)
adminUser.Spends = append(adminUser.Spends, models.Spending{
ID: "sp1",
Amount: 100,
Currency: "RSD",
Kind: &skNightlife,
})
adminUser.Spends = append(adminUser.Spends, models.Spending{
ID: "sp2",
Amount: 2300,
Currency: "RSD",
Kind: &skTravel,
})
lazarUser := models.NewUser("lazar@serjspends.de", "lazar", "lazar1", defSpendKinds)
lazarUser.Spends = append(lazarUser.Spends, models.Spending{
ID: "sp3",
Amount: 89.99,
Currency: "USD",
Kind: &skTravel,
})
_, err := db.StoreUser(adminUser)
if err != nil {
log.Panic(err.Error())
}
_, err = db.StoreUser(lazarUser)
if err != nil {
log.Panic(err.Error())
}
_, err = db.StoreDefaultSpendKind(skNightlife)
if err != nil {
log.Panic(err.Error())
}
_, err = db.StoreDefaultSpendKind(skFood)
if err != nil {
log.Panic(err.Error())
}
_, err = db.StoreDefaultSpendKind(skRent)
if err != nil {
log.Panic(err.Error())
}
_, err = db.StoreDefaultSpendKind(skTravel)
if err != nil {
log.Panic(err.Error())
}
}