package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
	"strings"
	"time"

	"github.com/charmbracelet/bubbles/spinner"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

// Styles
var (
	titleStyle = lipgloss.NewStyle().
			Bold(true).
			Foreground(lipgloss.Color("#FAFAFA")).
			Background(lipgloss.Color("#7D56F4")).
			Padding(0, 1)

	itemStyle = lipgloss.NewStyle().
			PaddingLeft(2)

	scoreStyle = lipgloss.NewStyle().
			Foreground(lipgloss.Color("#FFD700")) // Gold color

	errorStyle = lipgloss.NewStyle().
			Foreground(lipgloss.Color("#FF5555")).
			Bold(true)
)

type Game struct {
	ID          int64  `json:"id"`
	Name        string `json:"name"`
	PlatformID  int64  `json:"platform_id"`
	Score       int32  `json:"score"`
	ReleaseYear string `json:"release_year"`
	Finished    string `json:"finished,omitempty"`
}

type GamesResponse struct {
	Body []Game `json:"body"`
}

type Model struct {
	spinner  spinner.Model
	loading  bool
	err      error
	games    []Game
	quitting bool
}

func InitialModel() Model {
	s := spinner.New()
	s.Spinner = spinner.Dot
	s.Style = lipgloss.NewStyle().Foreground(lipgloss.Color("205"))
	return Model{spinner: s, loading: true}
}

type loadedMsg []Game
type errMsg error

func fetchGames() tea.Msg {
	client := &http.Client{Timeout: 5 * time.Second}
	resp, err := client.Get("http://localhost:8080/games")
	if err != nil {
		return errMsg(err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return errMsg(fmt.Errorf("status code: %d", resp.StatusCode))
	}

	var data GamesResponse
	if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
		return errMsg(err)
	}

	return loadedMsg(data.Body)
}

func (m Model) Init() tea.Cmd {
	return tea.Batch(m.spinner.Tick, fetchGames)
}

func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.KeyMsg:
		if msg.String() == "q" || msg.String() == "ctrl+c" {
			m.quitting = true
			return m, tea.Quit
		}
	case spinner.TickMsg:
		var cmd tea.Cmd
		m.spinner, cmd = m.spinner.Update(msg)
		return m, cmd
	case loadedMsg:
		m.loading = false
		m.games = msg
		return m, nil
	case errMsg:
		m.loading = false
		m.err = msg
		return m, nil
	}
	return m, nil
}

func (m Model) View() string {
	if m.quitting {
		return "Bye!\n"
	}

	s := titleStyle.Render("My Game Collection") + "\n\n"

	if m.loading {
		s += fmt.Sprintf("%s Loading games...", m.spinner.View())
	} else if m.err != nil {
		s += errorStyle.Render(fmt.Sprintf("Error: %v", m.err))
		s += "\nMake sure the API is running on localhost:8080"
	} else {
		if len(m.games) == 0 {
			s += "No games found."
		} else {
			for _, g := range m.games {
				score := scoreStyle.Render(fmt.Sprintf("★ %d", g.Score))
				line := fmt.Sprintf("• %s (%s) - %s", g.Name, g.ReleaseYear, score)
				if g.Finished != "" {
					line += " [✓ Finished]"
				}
				s += itemStyle.Render(line) + "\n"
			}
		}
	}

	s += strings.Repeat("\n", 2) + lipgloss.NewStyle().Foreground(lipgloss.Color("#555")).Render("Press 'q' to quit")
	return s
}

func main() {
	p := tea.NewProgram(InitialModel())
	if _, err := p.Run(); err != nil {
		fmt.Printf("Alas, there's been an error: %v", err)
		os.Exit(1)
	}
}