package main

import (
	"fmt"
	"log"
	"os/exec"
	"runtime"

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

type specialSoftwareModel struct {
	items        []string
	index        int
	spinner      spinner.Model
	progress     progress.Model
	done         bool
	sudoPassword string
}

func newSpecialSoftwareModel(sudoPassword string) specialSoftwareModel {
	items := []string{"oh-my-posh", "golang", "rust"}

	p := progress.New(
		progress.WithDefaultGradient(),
		progress.WithWidth(40),
		progress.WithoutPercentage(),
	)
	s := spinner.New()
	s.Style = lipgloss.NewStyle().Foreground(lipgloss.Color("63"))

	return specialSoftwareModel{
		items:        items,
		spinner:      s,
		progress:     p,
		sudoPassword: sudoPassword,
	}
}

func (m specialSoftwareModel) Init() tea.Cmd {
	return tea.Batch(m.installItemCmd(m.items[m.index]), m.spinner.Tick)
}

func (m specialSoftwareModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.String() {
		case "ctrl+c", "esc", "q":
			return m, tea.Quit
		}
	case installedItemMsg:
		if m.index >= len(m.items)-1 {
			m.done = true
			return m, tea.Quit
		}

		m.index++
		progressCmd := m.progress.SetPercent(float64(m.index) / float64(len(m.items)))

		return m, tea.Batch(
			progressCmd,
			tea.Printf("%s %s", checkMark, m.items[m.index-1]),
			m.installItemCmd(m.items[m.index]),
		)
	case spinner.TickMsg:
		var cmd tea.Cmd
		m.spinner, cmd = m.spinner.Update(msg)
		return m, cmd
	}
	return m, nil
}

func (m specialSoftwareModel) View() string {
	if m.done {
		return doneStyle.Render("Spezielle Software Installation abgeschlossen!\n")
	}

	spin := m.spinner.View() + " "
	prog := m.progress.View()
	info := fmt.Sprintf("Installiere %s", m.items[m.index])

	return spin + info + " " + prog
}

func (m specialSoftwareModel) installItemCmd(item string) tea.Cmd {
	return func() tea.Msg {
		switch item {
		case "oh-my-posh":
			if _, err := exec.LookPath("oh-my-posh"); err == nil {
				return installedItemMsg(item)
			}
			err := executeShellCommand("curl -s https://ohmyposh.dev/install.sh | bash -s")
			if err != nil {
				log.Printf("Fehler bei der Installation von oh-my-posh: %v\n", err)
			}
		case "golang":
			if _, err := exec.LookPath("go"); err == nil {
				return installedItemMsg(item)
			}
			golangVersion := "1.23.4"
			if err := downloadGolang(golangVersion); err != nil {
				log.Printf("Fehler beim Herunterladen von Go: %v", err)
			}
			golangCommand := fmt.Sprintf("sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go%s.linux-%s.tar.gz", golangVersion, runtime.GOARCH)
			if err := installPackage(golangCommand, "", m.sudoPassword); err != nil {
				log.Printf("Fehler beim Installieren von Go: %v", err)
			}
		case "rust":
			if _, err := exec.LookPath("rustc"); err == nil {
				if _, err := exec.LookPath("cargo"); err == nil {
					return installedItemMsg(item)
				}
			}
			err := executeShellCommand("curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -q -y")
			if err != nil {
				log.Printf("Fehler bei der Installation von rustup: %v\n", err)
			}
		}
		return installedItemMsg(item)
	}
}

func executeShellCommand(command string) error {
	cmd := exec.Command("bash", "-c", command)
	output, err := cmd.CombinedOutput()
	if err != nil {
		return fmt.Errorf("befehl fehlgeschlagen: %v\nAusgabe: %s", err, output)
	}
	return nil
}