✨ feat(main): Running a cmd & seeing output!!!!!

install.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bufio"
+	"io"
+	"os/exec"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type cmdMsg string
+
+type cmdDoneMsg struct{}
+
+func installPackage(sub chan string) tea.Cmd {
+	return func() tea.Msg {
+		cmd := exec.Command("./test.sh")
+		out, err := cmd.StdoutPipe()
+		if err != nil {
+			return errMsg{err}
+		}
+
+		if err := cmd.Start(); err != nil {
+			return errMsg{err}
+		}
+
+		buf := bufio.NewReader(out)
+		for {
+			line, _, err := buf.ReadLine()
+
+			if err == io.EOF {
+				return cmdDoneMsg{}
+			}
+
+			if err != nil {
+				return errMsg{err}
+			}
+
+			sub <- string(line)
+		}
+	}
+}
+
+func waitForCmdResponses(sub chan string) tea.Cmd {
+	return func() tea.Msg {
+		return cmdMsg(<-sub)
+	}
+}

main.go

@@ -21,12 +21,13 @@ type menu struct {
 	current  int
 	keys     keyMap
 	help     help.Model
-	inputStyle gloss.Style
 	spinner  spinner.Model
 	quitting bool
-	viewport   viewport.Model
 	width    int
 	height   int
+	sub      chan string
+	output   *string
+	viewport viewport.Model
 }
 
 const (
@@ -40,15 +41,22 @@ func initialModel() menu {
 	s.Style = gloss.NewStyle().Foreground(gloss.Color("3"))
 	width, height, _ := term.GetSize(int(os.Stdout.Fd()))
 
-	return menu{
-		current:  150,
+	m := menu{
+		current:  0,
 		keys:     keys,
 		help:     help.New(),
 		spinner:  s,
 		quitting: false,
 		width:    width,
 		height:   height,
+		sub:      make(chan string),
+		output:   new(string),
+		viewport: viewport.New(0, 30),
 	}
+
+	m.appendOutput("Running...")
+
+	return m
 }
 
 type keyMap struct {
@@ -80,10 +88,24 @@ type errMsg struct{ err error }
 
 func (e errMsg) Error() string { return e.err.Error() }
 
+func (m *menu) appendOutput(s string) {
+	*m.output += "\n" + s
+	m.viewport.SetContent(*m.output)
+	m.viewport.GotoBottom()
+}
+
 func (m menu) Init() tea.Cmd {
 	return tea.Batch(getSoftwareList(softwareInstructionsFile), m.spinner.Tick)
 }
 
+func (m menu) setDimensions() {
+	m.width, m.height, _ = term.GetSize(int(os.Stdout.Fd()))
+}
+
+func calcMainWidth(width int) int {
+	return int(float64(width) * 0.65)
+}
+
 func (m menu) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	var cmd tea.Cmd
 	var cmds []tea.Cmd
@@ -92,6 +114,14 @@ func (m menu) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	case softwareListMsg:
 		m.order = msg
+		cmds = append(cmds, installPackage(m.sub), waitForCmdResponses(m.sub))
+
+	case cmdMsg:
+		m.appendOutput(string(msg))
+		cmds = append(cmds, waitForCmdResponses(m.sub))
+
+	case cmdDoneMsg:
+		m.appendOutput("Done!!")
 
 	case tea.KeyMsg:
 		switch {
@@ -105,28 +135,34 @@ func (m menu) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		cmds = append(cmds, cmd)
 
 	case tea.WindowSizeMsg:
-		m.width, m.height, _ = term.GetSize(int(os.Stdout.Fd()))
+		m.setDimensions()
+		m.viewport.Width = calcMainWidth(m.width)
+
+	case errMsg:
+		m.appendOutput("Error: " + msg.Error())
 	}
 
+	m.viewport, cmd = m.viewport.Update(msg)
+	cmds = append(cmds, cmd)
+
 	return m, tea.Batch(cmds...)
 }
 
 func (m menu) View() string {
+	mainWidth := calcMainWidth(m.width)
 	borderStyle := gloss.NewStyle().
 		BorderStyle(gloss.RoundedBorder()).
 		BorderForeground(gloss.Color("5")).
 		Padding(0, 1)
 
 	mainStyle := borderStyle.
-		Width(int(float64(m.width) * 0.65))
+		Width(mainWidth)
 
 	sidebarStyle := borderStyle.
 		Width(int(float64(m.width) * 0.3))
 
 	topPadding := 1
 
-	mainContent := ""
-
 	helpView := m.help.View(m.keys)
 
 	softwareListEnumerator := func(l list.Items, i int) string {
@@ -157,6 +193,10 @@ func (m menu) View() string {
 
 	sidebarContent := software.String()
 
+	m.viewport.Height = sidebarHeight
+	m.viewport.Width = mainWidth
+	mainContent := m.viewport.View()
+
 	main := mainStyle.Render(mainContent)
 	sidebar := sidebarStyle.Render(sidebarContent)
 
@@ -174,7 +214,10 @@ func (m menu) View() string {
 }
 
 func main() {
-	p := tea.NewProgram(initialModel(), tea.WithAltScreen())
+	p := tea.NewProgram(
+		initialModel(),
+		tea.WithAltScreen(),
+	)
 
 	if _, err := p.Run(); err != nil {
 		fmt.Printf("There's been an error: %v", err)

test.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+i=0
+
+while [ $i -le 100 ]; do
+	printf "line\n"
+	sleep 1
+done