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package state
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"regexp"
)
// State represents the local ship configuration
type State struct {
DefaultHost string `json:"default_host,omitempty"`
Hosts map[string]*Host `json:"hosts"`
}
// Host represents configuration for a single VPS
type Host struct {
BaseDomain string `json:"base_domain,omitempty"`
GitSetup bool `json:"git_setup,omitempty"`
}
var validName = regexp.MustCompile(`^[a-z][a-z0-9-]{0,62}$`)
// ValidateName checks that a name is safe for use in shell commands,
// file paths, systemd units, and DNS labels.
func ValidateName(name string) error {
if !validName.MatchString(name) {
return fmt.Errorf("invalid name %q: must start with a lowercase letter, contain only lowercase letters, digits, and hyphens, and be 1-63 characters", name)
}
return nil
}
// Load reads state from ~/.config/ship/state.json
func Load() (*State, error) {
path := statePath()
if _, err := os.Stat(path); os.IsNotExist(err) {
return &State{
Hosts: make(map[string]*Host),
}, nil
}
data, err := os.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("failed to read state file: %w", err)
}
var state State
if err := json.Unmarshal(data, &state); err != nil {
return nil, fmt.Errorf("failed to parse state file: %w", err)
}
if state.Hosts == nil {
state.Hosts = make(map[string]*Host)
}
return &state, nil
}
// Save writes state to ~/.config/ship/state.json
func (s *State) Save() error {
path := statePath()
dir := filepath.Dir(path)
if err := os.MkdirAll(dir, 0755); err != nil {
return fmt.Errorf("failed to create config directory: %w", err)
}
data, err := json.MarshalIndent(s, "", " ")
if err != nil {
return fmt.Errorf("failed to marshal state: %w", err)
}
if err := os.WriteFile(path, data, 0600); err != nil {
return fmt.Errorf("failed to write state file: %w", err)
}
return nil
}
// GetHost returns the host config, creating it if it doesn't exist
func (s *State) GetHost(host string) *Host {
if s.Hosts[host] == nil {
s.Hosts[host] = &Host{}
}
return s.Hosts[host]
}
// GetDefaultHost returns the default host, or empty string if not set
func (s *State) GetDefaultHost() string {
return s.DefaultHost
}
// SetDefaultHost sets the default host
func (s *State) SetDefaultHost(host string) {
s.DefaultHost = host
}
func statePath() string {
home, err := os.UserHomeDir()
if err != nil {
return ".ship-state.json"
}
return filepath.Join(home, ".config", "ship", "state.json")
}
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