package tui

import (
	"fmt"
	"strings"

	"github.com/charmbracelet/lipgloss"

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

var (
	HostNameStyle   = lipgloss.NewStyle().Foreground(lipgloss.Color("226")).Bold(true)
	HostDetailStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("245"))
	SelectedStyle   = lipgloss.NewStyle().Foreground(lipgloss.Color("212")).Background(lipgloss.Color("235")).Padding(0, 1)
	TagStyle        = lipgloss.NewStyle().Foreground(lipgloss.Color("86"))
)

// renderHostList renders the host list screen
func renderHostList(m *Model) string {
	var b strings.Builder

	b.WriteString(TitleStyle.Render("HOSTKEEPER - SSH Manager"))
	b.WriteString("\n\n")

	if len(m.Hosts) == 0 {
		b.WriteString(SubtitleStyle.Render("No hosts found. Add your first host with: hostkeeper add"))
		b.WriteString("\n\n")
		b.WriteString(InfoStyle.Render("Press 'q' to quit"))
		return b.String()
	}

	for i, host := range m.Hosts {
		if i == m.SelectedIndex {
			b.WriteString(renderSelectedHost(host))
		} else {
			b.WriteString(renderHost(host))
		}
		b.WriteString("\n")
	}

	b.WriteString("\n")
	b.WriteString(SubtitleStyle.Render("\u2191\u2193: Navigate | Enter: Connect | q: Quit"))

	return b.String()
}

// renderHost renders a single host
func renderHost(host *models.Host) string {
	var b strings.Builder

	b.WriteString(HostNameStyle.Render(host.Name))
	b.WriteString("\n")

	details := fmt.Sprintf("   %s@%s:%d", host.Username, host.Hostname, host.Port)
	b.WriteString(HostDetailStyle.Render(details))

	if len(host.Tags) > 0 {
		tags := formatTagsForTUI(host.Tags)
		b.WriteString(" " + TagStyle.Render(tags))
	}

	return b.String()
}

// renderSelectedHost renders the selected host with highlight
func renderSelectedHost(host *models.Host) string {
	hostText := renderHost(host)
	return SelectedStyle.Render(hostText)
}

// formatTagsForTUI formats tags for TUI display
func formatTagsForTUI(tags []string) string {
	if len(tags) == 0 {
		return ""
	}

	var formatted []string
	for _, tag := range tags {
		formatted = append(formatted, "["+tag+"]")
	}

	return strings.Join(formatted, " ")
}