ssm-browse: added cd command

Also came up with an approach for dealing with commands that will probably work with contexts

internal/common/ui/commandctrl/commandctrl.go

@@ -9,15 +9,20 @@ import (
 )
 
 type CommandController struct {
-	commands map[string]Command
+	commandList *CommandContext
 }
 
-func NewCommandController(commands map[string]Command) *CommandController {
+func NewCommandController() *CommandController {
 	return &CommandController{
-		commands: commands,
+		commandList: nil,
 	}
 }
 
+func (c *CommandController) AddCommands(ctx *CommandContext) {
+	ctx.parent = c.commandList
+	c.commandList = ctx
+}
+
 func (c *CommandController) Prompt() tea.Cmd {
 	return func() tea.Msg {
 		return events.PromptForInputMsg{
@@ -36,10 +41,19 @@ func (c *CommandController) Execute(commandInput string) tea.Cmd {
 	}
 
 	tokens := shellwords.Split(input)
-	command, ok := c.commands[tokens[0]]
-	if !ok {
+	command := c.lookupCommand(tokens[0])
+	if command == nil {
 		return events.SetStatus("no such command: " + tokens[0])
 	}
 
-	return command(tokens)
+	return command(tokens[1:])
 }
+
+func (c *CommandController) lookupCommand(name string) Command {
+	for ctx := c.commandList; ctx != nil; ctx = ctx.parent {
+		if cmd, ok := ctx.Commands[name]; ok {
+			return cmd
+		}
+	}
+	return nil
+}

internal/common/ui/commandctrl/types.go

@@ -9,3 +9,9 @@ func NoArgCommand(cmd tea.Cmd) Command {
 		return cmd
 	}
 }
+
+type CommandContext struct {
+	Commands map[string]Command
+
+	parent   *CommandContext
+}