feat: waiter connection manager - save/switch/delete connections, auto-apply default

cmd/waiter/builtin.go

@@ -17,6 +17,10 @@ func handleBuiltin(cmd string, cfg *Config, state *State, reconnect func()) bool
   /connect <path>          switch to a different unix socket
   /remote <url>            switch to remote HTTP mode
   /local                   switch back to local socket mode
+  /conn list               list saved connections
+  /conn save <name>        save current connection as <name>
+  /conn use <name>         switch to saved connection
+  /conn del <name>         delete saved connection
 
 Server commands (sent to agent):
   /status                  system status
@@ -66,6 +70,48 @@ Any other text is sent to the agent directly.`)
 		reconnect()
 		return true
 
+	case cmd == "/conn list":
+		if len(cfg.Connections) == 0 {
+			fmt.Println("no saved connections")
+		}
+		for _, c := range cfg.Connections {
+			mark := " "
+			if c.Name == cfg.Default {
+				mark = "*"
+			}
+			addr := c.Remote
+			if addr == "" {
+				addr = c.Socket
+			}
+			fmt.Printf(" %s %-15s %s\n", mark, c.Name, addr)
+		}
+		return true
+
+	case strings.HasPrefix(cmd, "/conn save "):
+		name := strings.TrimSpace(cmd[11:])
+		cfg.SaveConnection(name)
+		fmt.Printf("connection saved as '%s' (default)\n", name)
+		return true
+
+	case strings.HasPrefix(cmd, "/conn use "):
+		name := strings.TrimSpace(cmd[10:])
+		if cfg.SwitchConnection(name) {
+			fmt.Printf("switched to '%s'\n", name)
+			reconnect()
+		} else {
+			fmt.Printf("connection '%s' not found\n", name)
+		}
+		return true
+
+	case strings.HasPrefix(cmd, "/conn del "):
+		name := strings.TrimSpace(cmd[10:])
+		if cfg.DeleteConnection(name) {
+			fmt.Printf("connection '%s' deleted\n", name)
+		} else {
+			fmt.Printf("connection '%s' not found\n", name)
+		}
+		return true
+
 	case cmd == "/status":
 		if rc := state.RemoteConn(); rc != nil {
 			d, _ := rc.DoAPI("GET", "/api/v1/status", "")

cmd/waiter/config.go

@@ -8,10 +8,40 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+type Connection struct {
+	Name   string `yaml:"name"`
+	Socket string `yaml:"socket,omitempty"`
+	Remote string `yaml:"remote,omitempty"`
+	APIKey string `yaml:"api_key,omitempty"`
+}
+
 type Config struct {
-	Socket string `yaml:"socket"`
-	Remote string `yaml:"remote"`
-	APIKey string `yaml:"api_key"`
+	Socket      string       `yaml:"socket"`
+	Remote      string       `yaml:"remote"`
+	APIKey      string       `yaml:"api_key"`
+	Default     string       `yaml:"default"`
+	Connections []Connection `yaml:"connections,omitempty"`
+}
+
+func (c *Config) Active() *Connection {
+	for i := range c.Connections {
+		if c.Connections[i].Name == c.Default {
+			return &c.Connections[i]
+		}
+	}
+	return nil
+}
+
+func (c *Config) ApplyDefault() {
+	conn := c.Active()
+	if conn == nil {
+		return
+	}
+	if c.Socket == "" && c.Remote == "" {
+		c.Socket = conn.Socket
+		c.Remote = conn.Remote
+		c.APIKey = conn.APIKey
+	}
 }
 
 func discoverConfig(configPath string) *Config {
@@ -48,6 +78,14 @@ func configCandidates() []string {
 	return cands
 }
 
+func configPath() string {
+	home, _ := os.UserHomeDir()
+	if home == "" {
+		return ""
+	}
+	return filepath.Join(home, ".config", "homeagent", "waiter.yaml")
+}
+
 func readFile(path string) *Config {
 	data, err := os.ReadFile(path)
 	if err != nil {
@@ -61,6 +99,19 @@ func readFile(path string) *Config {
 	return &cfg
 }
 
+func (c *Config) Save() {
+	p := configPath()
+	if p == "" {
+		return
+	}
+	os.MkdirAll(filepath.Dir(p), 0755)
+	data, err := yaml.Marshal(c)
+	if err != nil {
+		return
+	}
+	os.WriteFile(p, data, 0644)
+}
+
 func (c *Config) MergeCLI(socket, remote, apiKey string) {
 	if socket != "" {
 		c.Socket = socket
@@ -72,3 +123,51 @@ func (c *Config) MergeCLI(socket, remote, apiKey string) {
 		c.APIKey = apiKey
 	}
 }
+
+func (c *Config) SaveConnection(name string) {
+	conn := Connection{
+		Name:   name,
+		Socket: c.Socket,
+		Remote: c.Remote,
+		APIKey: c.APIKey,
+	}
+	for i, existing := range c.Connections {
+		if existing.Name == name {
+			c.Connections[i] = conn
+			c.Default = name
+			c.Save()
+			return
+		}
+	}
+	c.Connections = append(c.Connections, conn)
+	c.Default = name
+	c.Save()
+}
+
+func (c *Config) SwitchConnection(name string) bool {
+	for _, conn := range c.Connections {
+		if conn.Name == name {
+			c.Socket = conn.Socket
+			c.Remote = conn.Remote
+			c.APIKey = conn.APIKey
+			c.Default = name
+			c.Save()
+			return true
+		}
+	}
+	return false
+}
+
+func (c *Config) DeleteConnection(name string) bool {
+	for i, conn := range c.Connections {
+		if conn.Name == name {
+			c.Connections = append(c.Connections[:i], c.Connections[i+1:]...)
+			if c.Default == name {
+				c.Default = ""
+			}
+			c.Save()
+			return true
+		}
+	}
+	return false
+}

cmd/waiter/main.go

@@ -86,6 +86,7 @@ func main() {
 
 	cfg := discoverConfig(*configPath)
 	cfg.MergeCLI(*socket, *remote, *apiKey)
+	cfg.ApplyDefault()
 
 	if cfg.Socket == "" && cfg.Remote == "" {
 		cfg.Socket = discoverSocket("")