feat: initial commit — uptime monitor (forked from go-upkeep)

Go-based uptime monitor with SQLite/Postgres storage, TUI dashboard,
SSH server, alerting, and clustering support.

internal/tui/tab_users.go

@@ -0,0 +1,72 @@
+package tui
+
+import (
+	"fmt"
+	"go-upkeep/internal/store"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/huh"
+	"github.com/charmbracelet/lipgloss"
+)
+
+type userFormData struct {
+	Username  string
+	PublicKey string
+}
+
+func (m Model) viewUsersTab() string {
+	var content string
+	content += fmt.Sprintf("\n%-3s %-15s %-10s %s\n", "ID", "USER", "ROLE", "KEY")
+	content += subtleStyle.Render("----------------------------------------------------------------") + "\n"
+	end := m.tableOffset + m.maxTableRows
+	if end > len(m.users) {
+		end = len(m.users)
+	}
+	for i := m.tableOffset; i < end; i++ {
+		u := m.users[i]
+		cursor := " "
+		if m.cursor == i {
+			cursor = ">"
+		}
+		row := fmt.Sprintf("%s %-3d %-15s %-10s %s", cursor, u.ID, limitStr(u.Username, 15), u.Role, limitStr(u.PublicKey, 40))
+		if m.cursor == i {
+			row = lipgloss.NewStyle().Bold(true).Render(row)
+		}
+		content += row + "\n"
+	}
+	return content
+}
+
+func (m *Model) initUserHuhForm() tea.Cmd {
+	m.userFormData = &userFormData{}
+
+	m.huhForm = huh.NewForm(
+		huh.NewGroup(
+			huh.NewInput().Title("Username").
+				Placeholder("admin").
+				Value(&m.userFormData.Username).
+				Validate(func(s string) error {
+					if s == "" {
+						return fmt.Errorf("username is required")
+					}
+					return nil
+				}),
+			huh.NewInput().Title("SSH Public Key").
+				Placeholder("ssh-ed25519 AAAA...").
+				Value(&m.userFormData.PublicKey).
+				Validate(func(s string) error {
+					if s == "" {
+						return fmt.Errorf("public key is required")
+					}
+					return nil
+				}),
+		).Title("SSH Access"),
+	).WithTheme(huh.ThemeDracula())
+
+	return m.huhForm.Init()
+}
+
+func (m *Model) submitUserForm() {
+	store.Get().AddUser(m.userFormData.Username, m.userFormData.PublicKey, "user")
+	m.state = stateUsers
+}