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 {
	var b strings.Builder

	b.WriteString(sectionStyle.Render("Profile"))
	b.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 {
			labelStyle := lipgloss.NewStyle().Foreground(mutedColor).Width(14)
			valueStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("#E0E0E0"))
			b.WriteString(fmt.Sprintf("  %s %s\n", labelStyle.Render(f.label+":"), valueStyle.Render(f.value)))
		}
		if len(m.config.Profile.Languages) > 0 {
			labelStyle := lipgloss.NewStyle().Foreground(mutedColor).Width(14)
			valueStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("#E0E0E0"))
			b.WriteString(fmt.Sprintf("  %s %s\n", labelStyle.Render("Languages:"), valueStyle.Render(strings.Join(m.config.Profile.Languages, ", "))))
		}
	}
	b.WriteString("\n")

	b.WriteString(sectionStyle.Render("AI Providers"))
	b.WriteString("\n")
	if m.config != nil {
		for _, p := range m.config.AI.Providers {
			active := ""
			if p.Active {
				active = itemOKStyle.Render(" active")
			}
			keyStatus := itemMissingStyle.Render("no key")
			if p.APIKey != "" {
				keyStatus = itemOKStyle.Render("configured")
			}
			nameStyle := lipgloss.NewStyle().Foreground(lipgloss.Color("#E0E0E0")).Bold(true)
			b.WriteString(fmt.Sprintf("  %s  model=%s  key=%s%s\n",
				nameStyle.Render(p.Name), p.Model, keyStatus, active))
		}
	}
	b.WriteString("\n")

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

	b.WriteString(sectionStyle.Render("Terminal"))
	b.WriteString("\n")
	if m.config != nil {
		b.WriteString(fmt.Sprintf("  Custom Prompt: %v\n", m.config.Terminal.CustomPrompt))
		b.WriteString(fmt.Sprintf("  Prompt Theme:  %s\n", m.config.Terminal.PromptTheme))
	}
	b.WriteString("\n")

	b.WriteString(sectionStyle.Render(fmt.Sprintf("Skills (%d)", len(m.skillList))))
	b.WriteString("\n")
	if len(m.skillList) > 0 {
		for _, s := range m.skillList {
			target := s.Target
			if target == "" {
				target = "both"
			}
			b.WriteString(fmt.Sprintf("  %-20s %s %s\n",
				lipgloss.NewStyle().Foreground(lipgloss.Color("#E0E0E0")).Render(s.Name),
				lipgloss.NewStyle().Foreground(aiColor).Render("["+target+"]"),
				s.Description))
		}
	} else {
		b.WriteString("  No skills. Run `muyue skills init` to install built-ins.\n")
	}

	return b.String()
}