63 lines
1.2 KiB
Go
63 lines
1.2 KiB
Go
package persistence
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import (
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"encoding/json"
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"os"
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"github.com/StevanFreeborn/term-tier/internal/core"
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)
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type FileSystem interface {
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WriteFile(name string, data []byte, perm os.FileMode) error
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ReadFile(name string) ([]byte, error)
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}
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type osFileSystem struct{}
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func (osFileSystem) WriteFile(name string, data []byte, perm os.FileMode) error {
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return os.WriteFile(name, data, perm)
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}
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func (osFileSystem) ReadFile(name string) ([]byte, error) {
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return os.ReadFile(name)
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}
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type fileSaver struct {
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fs FileSystem
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}
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func NewFileSaver() core.Saver {
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return &fileSaver{
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fs: osFileSystem{},
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}
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}
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func NewFileSaverWithFS(fs FileSystem) core.Saver {
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return &fileSaver{
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fs: fs,
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}
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}
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func (s *fileSaver) Save(filename string, state core.SaveState) error {
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data, err := json.MarshalIndent(state, "", " ")
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if err != nil {
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return err
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}
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return s.fs.WriteFile(filename, data, 0644)
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}
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func (s *fileSaver) Load(filename string) (core.SaveState, error) {
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data, err := s.fs.ReadFile(filename)
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if err != nil {
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return core.SaveState{}, err
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}
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var state core.SaveState
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if err := json.Unmarshal(data, &state); err != nil {
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return core.SaveState{}, err
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}
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return state, nil
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}
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