wip: towards channel based status buffer

cairde.go

@@ -134,7 +134,7 @@ type model struct {
 	input       textinput.Model
 	hiddenInput string
 
-	statusMsgs *[]string
+	statusBuffer chan string
 }
 
 func newModel(username, homeDir string) model {
@@ -148,7 +148,7 @@ func newModel(username, homeDir string) model {
 		userDir:      path.Join(homeDir, "/.cairde/"),
 		connState:    offline,
 		input:        input,
-		statusMsgs: new([]string),
+		statusBuffer: make(chan string),
 	}
 }
 
@@ -163,11 +163,8 @@ type appInitialisedMsg struct {
 	acn connectivity.ACN
 }
 
-func (m model) statusInfo(msg string) {
-	*m.statusMsgs = append(*m.statusMsgs, msg)
-}
-
-func (m model) initApp() tea.Msg {
+func (m model) initApp() tea.Cmd {
+	return func() tea.Msg {
 		mrand.Seed(int64(time.Now().Nanosecond()))
 		port := mrand.Intn(1000) + 9600
 		controlPort := port + 1
@@ -195,7 +192,7 @@ func (m model) initApp() tea.Msg {
 			return errMsg{Err: fmt.Errorf("unable to initialise torrc builder: %s", err)}
 		}
 
-	m.statusInfo("initialising Tor ACN...")
+		m.statusBuffer <- "initialising Tor ACN..."
 		acn, err := tor.NewTorACNWithAuth(
 			path.Join(m.userDir, "/.tor"),
 			"",
@@ -209,7 +206,7 @@ func (m model) initApp() tea.Msg {
 			return errMsg{Err: fmt.Errorf("unable to bootstrap tor: %s", err)}
 		}
 
-	m.statusInfo("waiting for Tor ACN to bootstrap...")
+		m.statusBuffer <- "waiting for Tor ACN to bootstrap..."
 		if err := acn.WaitTillBootstrapped(); err != nil {
 			return errMsg{Err: fmt.Errorf("unable to initialise tor: %s", err)}
 		}
@@ -228,17 +225,27 @@ func (m model) initApp() tea.Msg {
 		engineHooks := connections.DefaultEngineHooks{}
 		app.InstallEngineHooks(engineHooks)
 
-	m.statusInfo("the Tor ACN is up")
+		m.statusBuffer <- "the Tor ACN is up"
 
 		return appInitialisedMsg{
 			app: app,
 			acn: acn,
 		}
+	}
+}
+
+type statusMsg struct{ msg string }
+
+func (m model) handleStatusMessage() tea.Cmd {
+	return func() tea.Msg {
+		return statusMsg{msg: <-m.statusBuffer}
+	}
 }
 
 func (m model) Init() tea.Cmd {
 	return tea.Batch(
 		textinput.Blink,
+		m.handleStatusMessage(),
 	)
 }
 
@@ -269,6 +276,7 @@ func (m model) shutdown() bool {
 
 	m.app.Shutdown()
 	m.acn.Close()
+	close(m.statusBuffer)
 
 	return true
 }
@@ -397,12 +405,6 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		cmds []tea.Cmd
 	)
 
-	m.input, cmd = m.input.Update(msg)
-	cmds = append(cmds, cmd)
-
-	m.viewport, cmd = m.viewport.Update(msg)
-	cmds = append(cmds, cmd)
-
 	switch msg := msg.(type) {
 	case tea.WindowSizeMsg:
 		m.width = msg.Width - 2
@@ -452,7 +454,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	case cmdMsg:
 		m.input.Reset()
-		m.statusInfo(msg.output)
+		m.statusBuffer <- msg.output
 
 	case shutdownMsg:
 		m.input.Reset()
@@ -465,7 +467,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.input.Reset()
 
 		m.app.CreateProfile(msg.name, msg.password, false)
-		m.statusInfo(fmt.Sprintf("created new profile: %s", msg.name))
+		m.statusBuffer <- fmt.Sprintf("created new profile: %s", msg.name)
 
 		profiles := m.app.ListProfiles() // TODO
 		m.profiles = append(m.profiles, profile{
@@ -479,10 +481,10 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 		switch m.connState {
 		case offline:
-			m.statusInfo("offline, run /connect first?")
+			m.statusBuffer <- "offline, run /connect first?"
 			break
 		case connecting:
-			m.statusInfo("still connecting, hold on a sec...")
+			m.statusBuffer <- "still connecting, hold on a sec..."
 			break
 		}
 
@@ -500,7 +502,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			for _, p := range unlocked {
 				names = append(names, p.name)
 			}
-			m.statusInfo(fmt.Sprintf("unlocked profile(s): %s", strings.Join(names, " ")))
+			m.statusBuffer <- fmt.Sprintf("unlocked profile(s): %s", strings.Join(names, " "))
 		}
 
 		m.profiles = unlocked
@@ -508,45 +510,54 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case profileInfoMsg:
 		m.input.Reset()
 		if m.connState != connected {
-			m.statusInfo("offline, run /connect first?")
+			m.statusBuffer <- "offline, run /connect first?"
 			break
 		}
 		if len(m.profiles) == 0 {
-			m.statusInfo("no profiles loaded")
+			m.statusBuffer <- "no profiles loaded"
 			break
 		}
 		profile := m.profiles[m.profileState]
-		m.statusInfo(fmt.Sprintf("profile onion: %s", profile.onion))
+		m.statusBuffer <- fmt.Sprintf("profile onion: %s", profile.onion)
+
+	case statusMsg:
+		existing := m.viewport.View()
+		m.viewport.SetContent(existing + "\n" + msg.msg)
+		m.viewport.GotoBottom()
+		cmds = append(cmds, m.handleStatusMessage())
 
 	case clearMsg:
 		m.input.Reset()
-		m.statusMsgs = new([]string)
+		m.viewport.SetContent("")
 		m.viewport.GotoBottom()
 
 	case connectMsg:
 		m.input.Reset()
-		cmds = append(cmds, m.initApp)
+		cmds = append(cmds, m.initApp())
 
 	case appInitialisedMsg:
 		m.app = msg.app
 		m.acn = msg.acn
 		m.connState = connected
-		m.statusInfo("create or unlock a profile to get started")
-		m.statusInfo("run /help to see the command listing")
+		m.statusBuffer <- "create or unlock a profile to get started"
+		m.statusBuffer <- "run /help to see the command listing"
 
 	case errMsg:
-		m.statusInfo(msg.Error())
+		m.statusBuffer <- msg.Error()
 	}
 
+	m.input, cmd = m.input.Update(msg)
+	cmds = append(cmds, cmd)
+
+	m.viewport, cmd = m.viewport.Update(msg)
+	cmds = append(cmds, cmd)
+
 	return m, tea.Batch(cmds...)
 }
 
 func (m model) View() string {
 	body := strings.Builder{}
 
-	// TODO: adjust when more panes are available
-	m.viewport.SetContent(strings.Join(*m.statusMsgs, "\n"))
-
 	channelBar := channelBarStyle.
 		Width(m.width).
 		AlignVertical(lipgloss.Center).