hosts-go/internal/tui/update.go

package tui

import (
	tea "github.com/charmbracelet/bubbletea"
)

// Update handles all messages for the TUI.
func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	var cmd tea.Cmd
	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.String() {
		case "q", "ctrl+c":
			return m, tea.Quit
		case "tab":
			if m.focus == listPane {
				m.focus = detailPane
			} else {
				m.focus = listPane
			}
		case "up", "k":
			if m.focus == detailPane {
				m.detail.LineUp(1)
			} else {
				m.list, cmd = m.list.Update(msg)
				m.refreshDetail()
			}
			return m, cmd
		case "down", "j":
			if m.focus == detailPane {
				m.detail.LineDown(1)
			} else {
				m.list, cmd = m.list.Update(msg)
				m.refreshDetail()
			}
			return m, cmd
		}
		if m.focus == listPane {
			m.list, cmd = m.list.Update(msg)
			m.refreshDetail()
		}
	case tea.WindowSizeMsg:
		m.width = msg.Width
		m.height = msg.Height - 1

		leftWidth := msg.Width / 2
		rightWidth := msg.Width - leftWidth
		leftHeight := m.height
		rightHeight := m.height

		if m.focus == listPane {
			leftWidth -= 2
			leftHeight -= 2
		} else {
			rightWidth -= 2
			rightHeight -= 2
		}

		leftWidth -= 2
		rightWidth -= 2

		m.list.SetSize(leftWidth, leftHeight)
		m.detail.Width = rightWidth
		m.detail.Height = rightHeight

		if m.focus == listPane {
			m.list, cmd = m.list.Update(msg)
		}
	default:
		if m.focus == listPane {
			m.list, cmd = m.list.Update(msg)
			m.refreshDetail()
		}
	}
	return m, cmd
}