package file import ( "encoding/json" "io" "os" "gitlab.com/demodesk/neko/server/pkg/types" ) func New(config Config) types.MemberProvider { return &MemberProviderCtx{ config: config, } } type MemberProviderCtx struct { config Config } func (provider *MemberProviderCtx) Connect() error { return nil } func (provider *MemberProviderCtx) Disconnect() error { return nil } func (provider *MemberProviderCtx) Authenticate(username string, password string) (string, types.MemberProfile, error) { // id will be also username id := username entry, err := provider.getEntry(id) if err != nil { return "", types.MemberProfile{}, err } // TODO: Use hash function. if entry.Password != password { return "", types.MemberProfile{}, types.ErrMemberInvalidPassword } return id, entry.Profile, nil } func (provider *MemberProviderCtx) Insert(username string, password string, profile types.MemberProfile) (string, error) { // id will be also username id := username entries, err := provider.deserialize() if err != nil { return "", err } _, ok := entries[id] if ok { return "", types.ErrMemberAlreadyExists } entries[id] = MemberEntry{ // TODO: Use hash function. Password: password, Profile: profile, } return id, provider.serialize(entries) } func (provider *MemberProviderCtx) UpdateProfile(id string, profile types.MemberProfile) error { entries, err := provider.deserialize() if err != nil { return err } entry, ok := entries[id] if !ok { return types.ErrMemberDoesNotExist } entry.Profile = profile entries[id] = entry return provider.serialize(entries) } func (provider *MemberProviderCtx) UpdatePassword(id string, password string) error { entries, err := provider.deserialize() if err != nil { return err } entry, ok := entries[id] if !ok { return types.ErrMemberDoesNotExist } // TODO: Use hash function. entry.Password = password entries[id] = entry return provider.serialize(entries) } func (provider *MemberProviderCtx) Select(id string) (types.MemberProfile, error) { entry, err := provider.getEntry(id) if err != nil { return types.MemberProfile{}, err } return entry.Profile, nil } func (provider *MemberProviderCtx) SelectAll(limit int, offset int) (map[string]types.MemberProfile, error) { profiles := map[string]types.MemberProfile{} entries, err := provider.deserialize() if err != nil { return profiles, err } i := 0 for id, entry := range entries { if i >= offset && (limit == 0 || i < offset+limit) { profiles[id] = entry.Profile } i = i + 1 } return profiles, nil } func (provider *MemberProviderCtx) Delete(id string) error { entries, err := provider.deserialize() if err != nil { return err } _, ok := entries[id] if !ok { return types.ErrMemberDoesNotExist } delete(entries, id) return provider.serialize(entries) } func (provider *MemberProviderCtx) deserialize() (map[string]MemberEntry, error) { file, err := os.OpenFile(provider.config.Path, os.O_RDONLY|os.O_CREATE, os.ModePerm) if err != nil { return nil, err } raw, err := io.ReadAll(file) if err != nil { return nil, err } if len(raw) == 0 { return map[string]MemberEntry{}, nil } var entries map[string]MemberEntry if err := json.Unmarshal([]byte(raw), &entries); err != nil { return nil, err } return entries, nil } func (provider *MemberProviderCtx) getEntry(id string) (MemberEntry, error) { entries, err := provider.deserialize() if err != nil { return MemberEntry{}, err } entry, ok := entries[id] if !ok { return MemberEntry{}, types.ErrMemberDoesNotExist } return entry, nil } func (provider *MemberProviderCtx) serialize(data map[string]MemberEntry) error { raw, err := json.Marshal(data) if err != nil { return err } return os.WriteFile(provider.config.Path, raw, os.ModePerm) }