package tui

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

	"git.tukangketik.id/swanadiva/hostkeeper/internal/models"
)

// Screen represents different TUI screens (deprecated, use tabs)
type Screen int

const (
	ScreenHostList Screen = iota
	ScreenConnection
	ScreenSettings
)

// Model represents the main TUI model
type Model struct {
	tabs          *TabManager
	CurrentScreen Screen // deprecated, kept for backward compat
	Hosts         []*models.Host // deprecated
	SelectedIndex int // deprecated
	Error         error
	Quit          bool
}

// New creates a new TUI model
func New() *Model {
	hostList := NewHostListTab()
	tm := NewTabManager(hostList)

	return &Model{
		tabs:          tm,
		CurrentScreen: ScreenHostList,
		SelectedIndex: 0,
		Quit:          false,
	}
}

// Init initializes the TUI
func (m *Model) Init() tea.Cmd {
	return m.tabs.Init()
}

// Update handles messages and updates the model
func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.String() {
		case "ctrl+c", "q":
			m.Quit = true
			return m, tea.Quit
		}
	}

	cmd, err := m.tabs.Update(msg)
	if err != nil {
		m.Error = err
	}

	// Sync deprecated fields
	if ht := FindHostListTab(m.tabs.tabs); ht != nil {
		m.Hosts = ht.Hosts()
		m.SelectedIndex = ht.SelectedIndex()
	}

	return m, cmd
}

// View renders the TUI
func (m *Model) View() string {
	if m.Quit {
		m.tabs = nil
		return "Thanks for using hostkeeper!\n"
	}

	if m.tabs == nil || m.tabs.Len() == 0 {
		return "No tabs open. Press 'q' to quit.\n"
	}

	return m.tabs.View()
}

// LoadHosts loads hosts into the TUI model
func (m *Model) LoadHosts(hosts []*models.Host) {
	if m.tabs == nil {
		return
	}

	if ht := FindHostListTab(m.tabs.tabs); ht != nil {
		ht.SetHosts(hosts)
		m.Hosts = hosts
	}
}

// TabManager returns the underlying tab manager
func (m *Model) TabManager() *TabManager {
	return m.tabs
}