chore(phase-0): struktur repo + hello TUI Bubble Tea v2 (T-0.1, T-0.2)

internal/app/app.go

@@ -0,0 +1,66 @@
+package app
+
+import (
+	"fmt"
+
+	tea "charm.land/bubbletea/v2"
+	"charm.land/lipgloss/v2"
+)
+
+// Model root sementara (T-0.2, Phase 0).
+// Tujuannya membuktikan Bubble Tea v2 (View struct, mouse, resize) sebelum
+// layout penuh Phase 1 menggantikannya.
+type Model struct {
+	width, height int
+	clicks        int
+	lastClick     string
+}
+
+func New() Model {
+	return Model{lastClick: "belum ada klik"}
+}
+
+func (m Model) Init() tea.Cmd { return nil }
+
+func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.width, m.height = msg.Width, msg.Height
+
+	case tea.KeyPressMsg:
+		switch msg.String() {
+		case "q", "ctrl+c", "esc":
+			return m, tea.Quit
+		}
+
+	case tea.MouseClickMsg:
+		if msg.Button == tea.MouseLeft {
+			m.clicks++
+			m.lastClick = fmt.Sprintf("klik #%d di (%d, %d)", m.clicks, msg.X, msg.Y)
+		}
+	}
+	return m, nil
+}
+
+func (m Model) View() tea.View {
+	title := lipgloss.NewStyle().
+		Bold(true).
+		Foreground(lipgloss.Color("#cba6f7")).
+		Render("tia — Terminal Is A My Way")
+	tagline := lipgloss.NewStyle().
+		Foreground(lipgloss.Color("#a6adc8")).
+		Render("Just Work · Phase 0 · skeleton TUI")
+	box := lipgloss.NewStyle().
+		Border(lipgloss.RoundedBorder()).
+		BorderForeground(lipgloss.Color("#6c7086")).
+		Padding(0, 2).
+		Render(m.lastClick + "\n\nklik mouse di mana saja · tekan q untuk keluar")
+
+	content := fmt.Sprintf("%s\n%s\n\n%s\n\nukuran jendela: %dx%d",
+		title, tagline, box, m.width, m.height)
+
+	v := tea.NewView(content)
+	v.AltScreen = true
+	v.MouseMode = tea.MouseModeCellMotion
+	return v
+}