feat: wip tui application

tui/header.go

@@ -0,0 +1,114 @@
+package tui
+
+import (
+	"fmt"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+type (
+	HeaderModel struct{
+		Tabs []HeaderTabModel
+		Width int
+	}
+
+	HeaderTabModel struct{
+		Current bool
+		Name string
+		Unread int
+	}
+)
+
+func NewHeader() HeaderModel {
+	return HeaderModel{
+		Tabs: []HeaderTabModel {
+			NewHeaderTab("Home", 10, true),
+			NewHeaderTab("Notifications", 3, false),
+			NewHeaderTab("Lists", 5, false),
+			NewHeaderTab("Private", 0, false),
+		},
+	}
+}
+
+func NewHeaderTab(name string, unread int, current bool) HeaderTabModel {
+	return HeaderTabModel{ Name: name, Unread: unread, Current: current }
+}
+
+var (
+	activeTabBorder = lipgloss.Border{
+		Top:         "─",
+		Bottom:      " ",
+		Left:        "│",
+		Right:       "│",
+		TopLeft:     "╭",
+		TopRight:    "╮",
+		BottomLeft:  "┘",
+		BottomRight: "└",
+	}
+
+	tabBorder = lipgloss.Border{
+		Top:         "─",
+		Bottom:      "─",
+		Left:        "│",
+		Right:       "│",
+		TopLeft:     "╭",
+		TopRight:    "╮",
+		BottomLeft:  "┴",
+		BottomRight: "┴",
+	}
+
+	headerTabStyle = lipgloss.NewStyle().
+		Border(tabBorder, true)
+
+	activeHeaderTabStyle = headerTabStyle.
+		Border(activeTabBorder, true)
+)
+
+func (m HeaderModel) Init() tea.Cmd {
+	return nil
+}
+
+func (m HeaderModel) Update(msg tea.Msg) (HeaderModel, tea.Cmd) {
+	var cmd tea.Cmd
+
+	switch msg := msg.(type) {
+	case Size:
+		m.Width = msg.Width
+	}
+
+	return m, cmd
+}
+
+func (m HeaderModel) View() string {
+	header := lipgloss.NewStyle().
+		Padding(1, 0).
+		Align(lipgloss.Center).
+		Width(m.Width)
+
+	renderedTabs := make([]string, len(m.Tabs))
+	for i, tab := range m.Tabs {
+		renderedTabs[i] = tab.View()
+	}
+
+	return header.Render(renderedTabs...)
+}
+
+func (m HeaderTabModel) Init() tea.Cmd {
+	return nil
+}
+
+func (m HeaderTabModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmd tea.Cmd
+	return m, cmd
+}
+
+func (m HeaderTabModel) View() string {
+	content := lipgloss.JoinHorizontal(lipgloss.Center, m.Name, fmt.Sprintf("(%d)", m.Unread))
+
+	if m.Current {
+		return lipgloss.NewStyle().Underline(true).Render(content)
+	}
+
+	return content
+}