refactor(ui): split TUI logic into multiple files and improve styling

internal/ui/model.go

@@ -0,0 +1,89 @@
+package ui
+
+import (
+	"sshm/internal/config"
+	"sshm/internal/history"
+
+	"github.com/charmbracelet/bubbles/table"
+	"github.com/charmbracelet/bubbles/textinput"
+	"github.com/charmbracelet/lipgloss"
+)
+
+// SortMode defines the available sorting modes
+type SortMode int
+
+const (
+	SortByName SortMode = iota
+	SortByLastUsed
+)
+
+func (s SortMode) String() string {
+	switch s {
+	case SortByName:
+		return "Name (A-Z)"
+	case SortByLastUsed:
+		return "Last Login"
+	default:
+		return "Name (A-Z)"
+	}
+}
+
+// ViewMode defines the current view state
+type ViewMode int
+
+const (
+	ViewList ViewMode = iota
+	ViewAdd
+	ViewEdit
+)
+
+// Model represents the state of the user interface
+type Model struct {
+	table          table.Model
+	searchInput    textinput.Model
+	hosts          []config.SSHHost
+	filteredHosts  []config.SSHHost
+	searchMode     bool
+	deleteMode     bool
+	deleteHost     string
+	exitAction     string
+	exitHostName   string
+	historyManager *history.HistoryManager
+	sortMode       SortMode
+
+	// View management
+	viewMode     ViewMode
+	addForm      *addFormModel
+	editForm     *editFormModel
+	previousView ViewMode
+
+	// Terminal size and styles
+	width  int
+	height int
+	styles Styles
+	ready  bool
+}
+
+// updateTableStyles updates the table header border color based on focus state
+func (m *Model) updateTableStyles() {
+	s := table.DefaultStyles()
+	s.Selected = m.styles.Selected
+
+	if m.searchMode {
+		// When in search mode, use secondary color for table header
+		s.Header = s.Header.
+			BorderStyle(lipgloss.NormalBorder()).
+			BorderForeground(lipgloss.Color(SecondaryColor)).
+			BorderBottom(true).
+			Bold(false)
+	} else {
+		// When table is focused, use primary color for table header
+		s.Header = s.Header.
+			BorderStyle(lipgloss.NormalBorder()).
+			BorderForeground(lipgloss.Color(PrimaryColor)).
+			BorderBottom(true).
+			Bold(false)
+	}
+
+	m.table.SetStyles(s)
+}