package tui

import (
	"fmt"
	"regexp"
	"strings"

	"github.com/charmbracelet/lipgloss"
)

var versionRegex = regexp.MustCompile(`\d+\.\d+\.\d+`)

func extractVersion(s string) string {
	return versionRegex.FindString(s)
}

func (m Model) renderConfig() string {
	colWidth := m.width / 2
	if colWidth < 30 {
		colWidth = 30
	}

	var left, right strings.Builder

	left.WriteString(renderSectionWithIcon("Profile", "👤"))
	left.WriteString("\n")
	if m.config != nil {
		fields := []struct {
			label string
			value string
		}{
			{"Name", m.config.Profile.Name},
			{"Pseudo", m.config.Profile.Pseudo},
			{"Email", m.config.Profile.Email},
			{"Editor", m.config.Profile.Preferences.Editor},
			{"Shell", m.config.Profile.Preferences.Shell},
			{"Theme", m.config.Profile.Preferences.Theme},
			{"Default AI", m.config.Profile.Preferences.DefaultAI},
		}
		for _, f := range fields {
			left.WriteString(fmt.Sprintf("  %s %s\n",
				labelStyle.Render(f.label+":"),
				valueStyle.Render(f.value)))
		}
		if len(m.config.Profile.Languages) > 0 {
			left.WriteString(fmt.Sprintf("  %s %s\n",
				labelStyle.Render("Languages:"),
				valueStyle.Render(strings.Join(m.config.Profile.Languages, ", "))))
		}
	}
	left.WriteString("\n")

	left.WriteString(renderSectionWithIcon("AI Providers", "◆"))
	left.WriteString("\n")
	if m.config != nil {
		for _, p := range m.config.AI.Providers {
			active := ""
			if p.Active {
				active = lipgloss.NewStyle().Foreground(primaryColor).Bold(true).Render(" ●")
			}
			keyStatus := itemMissingStyle.Render("no key")
			if p.APIKey != "" {
				keyStatus = itemOKStyle.Render("configured")
			}
			nameStyle := lipgloss.NewStyle().Foreground(textColor).Bold(true)
			left.WriteString(fmt.Sprintf("  %s  %s  key=%s%s\n",
				nameStyle.Render(p.Name),
				lipgloss.NewStyle().Foreground(dimColor).Render("model="+p.Model),
				keyStatus, active))
		}
	}
	left.WriteString("\n")

	right.WriteString(renderSectionWithIcon("Terminal", "▶"))
	right.WriteString("\n")
	if m.config != nil {
		right.WriteString(fmt.Sprintf("  %s %v\n", labelStyle.Render("Custom Prompt:"), valueStyle.Render(fmt.Sprintf("%v", m.config.Terminal.CustomPrompt))))
		right.WriteString(fmt.Sprintf("  %s %s\n", labelStyle.Render("Prompt Theme:"), valueStyle.Render(m.config.Terminal.PromptTheme)))
		right.WriteString(fmt.Sprintf("  %s %v\n", labelStyle.Render("Auto Update:"), valueStyle.Render(fmt.Sprintf("%v", m.config.Profile.Preferences.AutoUpdate))))
		right.WriteString(fmt.Sprintf("  %s %v\n", labelStyle.Render("Check on Start:"), valueStyle.Render(fmt.Sprintf("%v", m.config.Profile.Preferences.CheckOnStart))))
	}
	right.WriteString("\n")

	right.WriteString(renderSectionWithIcon("BMAD Method", "◈"))
	right.WriteString("\n")
	if m.config != nil {
		installed := itemMissingStyle.Render("no")
		if m.config.BMAD.Installed {
			installed = itemOKStyle.Render("yes")
		}
		right.WriteString(fmt.Sprintf("  %s %s\n", labelStyle.Render("Installed:"), installed))
		right.WriteString(fmt.Sprintf("  %s %v\n", labelStyle.Render("Global:"), valueStyle.Render(fmt.Sprintf("%v", m.config.BMAD.Global))))
		if m.config.BMAD.Version != "" {
			right.WriteString(fmt.Sprintf("  %s %s\n", labelStyle.Render("Version:"), valueStyle.Render(m.config.BMAD.Version)))
		}
	}
	right.WriteString("\n")

	right.WriteString(renderSectionWithIcon(fmt.Sprintf("Skills (%d)", len(m.skillList)), "⚡"))
	right.WriteString("\n")
	if len(m.skillList) > 0 {
		for _, s := range m.skillList {
			target := s.Target
			if target == "" {
				target = "both"
			}
			right.WriteString(fmt.Sprintf("  %s %s %s\n",
				lipgloss.NewStyle().Foreground(textColor).Render(s.Name),
				lipgloss.NewStyle().Foreground(primaryColor).Render("["+target+"]"),
				lipgloss.NewStyle().Foreground(dimColor).Render(s.Description)))
		}
	} else {
		right.WriteString(lipgloss.NewStyle().Foreground(mutedColor).Render("  No skills. Run `muyue skills init`."))
		right.WriteString("\n")
	}

	leftCol := lipgloss.NewStyle().Width(colWidth).Render(left.String())
	rightCol := lipgloss.NewStyle().Width(colWidth).Render(right.String())

	return lipgloss.JoinHorizontal(lipgloss.Top, leftCol, rightCol)
}