package ui

import (
	"fmt"

	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"

	"github.com/gmgauthier/gostations/internal/radio"
)

// App is the root Bubble Tea model for the two-stage UI (selection then playback).
type App struct {
	stations []radio.Station
	// current view state etc.
	width, height int
	quitting      bool
}

func NewApp(initial []radio.Station) *App {
	return &App{stations: initial}
}

func (a *App) Init() tea.Cmd {
	return nil
}

func (a *App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.String() {
		case "q", "ctrl+c":
			a.quitting = true
			return a, tea.Quit
		case "enter":
			// TODO Phase2: switch to playback view, start player etc.
			return a, nil
		}
	case tea.WindowSizeMsg:
		a.width = msg.Width
		a.height = msg.Height
	}
	return a, nil
}

var (
	titleStyle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("63"))
)

func (a *App) View() string {
	if a.quitting {
		return "Thanks for using GoStations!\n"
	}
	s := titleStyle.Render("GoStations - Radio Browser") + "\n\n"
	s += "Selection view (placeholder). Press enter for playback stub, q to quit.\n"
	if len(a.stations) > 0 {
		s += fmt.Sprintf("%d stations available (favorites would be pinned here).\n", len(a.stations))
		s += "First: " + a.stations[0].Name + "\n"
	}
	s += "\n(Full two-stage TUI with bubbles/list + playback controls coming in Phase 2.)\n"
	return s
}

// Run starts the TUI program (alt screen).
func Run(initial []radio.Station) error {
	p := tea.NewProgram(NewApp(initial), tea.WithAltScreen())
	_, err := p.Run()
	return err
}