120 lines
2.4 KiB
Go
120 lines
2.4 KiB
Go
package backup
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import (
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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const (
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defaultRemote = "https://github.com/steipete/backup-telecrawl.git"
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)
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type Config struct {
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Repo string `json:"repo"`
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Remote string `json:"remote"`
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Identity string `json:"identity"`
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Recipients []string `json:"recipients"`
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}
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type Options struct {
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ConfigPath string
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Repo string
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Remote string
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Identity string
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Recipients []string
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Push bool
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}
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func DefaultConfig() Config {
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return Config{
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Repo: "~/Projects/backup-telecrawl",
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Remote: defaultRemote,
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Identity: "~/.telecrawl/age.key",
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}
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}
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func DefaultConfigPath() string {
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home, err := os.UserHomeDir()
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if err != nil {
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return "backup.json"
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}
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return filepath.Join(home, ".telecrawl", "backup.json")
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}
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func LoadConfig(path string) (Config, error) {
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if strings.TrimSpace(path) == "" {
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path = DefaultConfigPath()
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}
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cfg := DefaultConfig()
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data, err := os.ReadFile(expandHome(path))
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return cfg, nil
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}
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return Config{}, err
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}
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if len(strings.TrimSpace(string(data))) == 0 {
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return cfg, nil
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}
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if err := json.Unmarshal(data, &cfg); err != nil {
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return Config{}, fmt.Errorf("read backup config: %w", err)
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}
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return cfg, nil
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}
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func SaveConfig(path string, cfg Config) error {
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if strings.TrimSpace(path) == "" {
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path = DefaultConfigPath()
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}
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path = expandHome(path)
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if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil {
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return err
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}
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data, err := json.MarshalIndent(cfg, "", " ")
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if err != nil {
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return err
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}
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data = append(data, '\n')
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return os.WriteFile(path, data, 0o600)
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}
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func ResolveOptions(opts Options) (Config, error) {
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cfg, err := LoadConfig(opts.ConfigPath)
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if err != nil {
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return Config{}, err
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}
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if strings.TrimSpace(opts.Repo) != "" {
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cfg.Repo = opts.Repo
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}
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if strings.TrimSpace(opts.Remote) != "" {
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cfg.Remote = opts.Remote
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}
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if strings.TrimSpace(opts.Identity) != "" {
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cfg.Identity = opts.Identity
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}
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if len(opts.Recipients) > 0 {
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cfg.Recipients = opts.Recipients
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}
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cfg.Repo = expandHome(cfg.Repo)
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cfg.Identity = expandHome(cfg.Identity)
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return cfg, nil
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}
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func expandHome(path string) string {
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if path == "~" {
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if home, err := os.UserHomeDir(); err == nil {
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return home
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}
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}
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if after, ok := strings.CutPrefix(path, "~/"); ok {
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if home, err := os.UserHomeDir(); err == nil {
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return filepath.Join(home, after)
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}
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}
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return path
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}
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