|
| 1 | +package utils |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + "os" |
| 7 | + "path/filepath" |
| 8 | +) |
| 9 | + |
| 10 | +// GetAliasesPath returns the path to the aliases file (~/.vers/aliases.json) |
| 11 | +func GetAliasesPath() (string, error) { |
| 12 | + homeDir, err := os.UserHomeDir() |
| 13 | + if err != nil { |
| 14 | + return "", fmt.Errorf("failed to get user home directory: %w", err) |
| 15 | + } |
| 16 | + |
| 17 | + configDir := filepath.Join(homeDir, ".vers") |
| 18 | + if err := os.MkdirAll(configDir, 0755); err != nil { |
| 19 | + return "", fmt.Errorf("failed to create config directory: %w", err) |
| 20 | + } |
| 21 | + |
| 22 | + return filepath.Join(configDir, "aliases.json"), nil |
| 23 | +} |
| 24 | + |
| 25 | +// LoadAliases loads the alias map from ~/.vers/aliases.json |
| 26 | +// Returns an empty map if the file doesn't exist |
| 27 | +func LoadAliases() (map[string]string, error) { |
| 28 | + aliasPath, err := GetAliasesPath() |
| 29 | + if err != nil { |
| 30 | + return nil, err |
| 31 | + } |
| 32 | + |
| 33 | + if _, err := os.Stat(aliasPath); os.IsNotExist(err) { |
| 34 | + return make(map[string]string), nil |
| 35 | + } |
| 36 | + |
| 37 | + data, err := os.ReadFile(aliasPath) |
| 38 | + if err != nil { |
| 39 | + return nil, fmt.Errorf("failed to read aliases file: %w", err) |
| 40 | + } |
| 41 | + |
| 42 | + var aliases map[string]string |
| 43 | + if err := json.Unmarshal(data, &aliases); err != nil { |
| 44 | + return nil, fmt.Errorf("failed to parse aliases file: %w", err) |
| 45 | + } |
| 46 | + |
| 47 | + if aliases == nil { |
| 48 | + aliases = make(map[string]string) |
| 49 | + } |
| 50 | + |
| 51 | + return aliases, nil |
| 52 | +} |
| 53 | + |
| 54 | +// SaveAliases saves the alias map to ~/.vers/aliases.json |
| 55 | +func SaveAliases(aliases map[string]string) error { |
| 56 | + aliasPath, err := GetAliasesPath() |
| 57 | + if err != nil { |
| 58 | + return err |
| 59 | + } |
| 60 | + |
| 61 | + data, err := json.MarshalIndent(aliases, "", " ") |
| 62 | + if err != nil { |
| 63 | + return fmt.Errorf("failed to marshal aliases: %w", err) |
| 64 | + } |
| 65 | + |
| 66 | + if err := os.WriteFile(aliasPath, data, 0644); err != nil { |
| 67 | + return fmt.Errorf("failed to write aliases file: %w", err) |
| 68 | + } |
| 69 | + |
| 70 | + return nil |
| 71 | +} |
| 72 | + |
| 73 | +// SetAlias adds or updates an alias mapping |
| 74 | +func SetAlias(alias, vmID string) error { |
| 75 | + aliases, err := LoadAliases() |
| 76 | + if err != nil { |
| 77 | + return err |
| 78 | + } |
| 79 | + |
| 80 | + aliases[alias] = vmID |
| 81 | + return SaveAliases(aliases) |
| 82 | +} |
| 83 | + |
| 84 | +// RemoveAlias removes an alias mapping |
| 85 | +func RemoveAlias(alias string) error { |
| 86 | + aliases, err := LoadAliases() |
| 87 | + if err != nil { |
| 88 | + return err |
| 89 | + } |
| 90 | + |
| 91 | + delete(aliases, alias) |
| 92 | + return SaveAliases(aliases) |
| 93 | +} |
| 94 | + |
| 95 | +// ResolveAlias checks if the identifier is an alias and returns the VM ID |
| 96 | +// If not an alias, returns the identifier unchanged |
| 97 | +func ResolveAlias(identifier string) string { |
| 98 | + aliases, err := LoadAliases() |
| 99 | + if err != nil { |
| 100 | + return identifier |
| 101 | + } |
| 102 | + |
| 103 | + if vmID, ok := aliases[identifier]; ok { |
| 104 | + return vmID |
| 105 | + } |
| 106 | + |
| 107 | + return identifier |
| 108 | +} |
| 109 | + |
| 110 | +// GetAliasByVMID performs a reverse lookup to find an alias for a VM ID |
| 111 | +// Returns empty string if no alias exists |
| 112 | +func GetAliasByVMID(vmID string) string { |
| 113 | + aliases, err := LoadAliases() |
| 114 | + if err != nil { |
| 115 | + return "" |
| 116 | + } |
| 117 | + |
| 118 | + for alias, id := range aliases { |
| 119 | + if id == vmID { |
| 120 | + return alias |
| 121 | + } |
| 122 | + } |
| 123 | + |
| 124 | + return "" |
| 125 | +} |
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