92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
package savegame
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import (
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"encoding/json"
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"errors"
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"io/fs"
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"os"
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"path/filepath"
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"time"
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"termdoku/internal/game"
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)
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// SavedGame represents a saved game state
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type SavedGame struct {
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Board game.Grid `json:"board"`
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Solution game.Grid `json:"solution"`
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Given [9][9]bool `json:"given"`
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Difficulty string `json:"difficulty"`
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Elapsed int64 `json:"elapsed"` // seconds
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StartTime time.Time `json:"startTime"`
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HintsUsed int `json:"hintsUsed"`
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Notes map[string][]uint8 `json:"notes"` // JSON keys must be strings
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SavedAt time.Time `json:"savedAt"`
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AutoCheck bool `json:"autoCheck"`
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TimerEnabled bool `json:"timerEnabled"`
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}
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// path returns the save file path
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func path() (string, error) {
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h, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(h, ".termdoku", "savegame.json"), nil
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}
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// Save writes a game state to disk
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func Save(sg SavedGame) error {
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p, err := path()
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if err != nil {
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return err
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}
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if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
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return err
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}
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data, err := json.MarshalIndent(sg, "", " ")
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if err != nil {
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return err
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}
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return os.WriteFile(p, data, 0o644)
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}
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// Load reads a game state from disk
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func Load() (SavedGame, error) {
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var sg SavedGame
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p, err := path()
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if err != nil {
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return sg, err
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}
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b, err := os.ReadFile(p)
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if err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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return sg, errors.New("no saved game found")
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}
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return sg, err
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}
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if err := json.Unmarshal(b, &sg); err != nil {
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return sg, err
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}
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return sg, nil
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}
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// Exists checks if a saved game exists
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func Exists() bool {
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p, err := path()
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if err != nil {
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return false
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}
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_, err = os.Stat(p)
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return err == nil
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}
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// Delete removes the saved game
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func Delete() error {
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p, err := path()
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if err != nil {
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return err
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}
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return os.Remove(p)
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}
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