package components

import (
	"fmt"

	"github.com/calmcacil/wg-admin/internal/tui/theme"
	"github.com/charmbracelet/bubbles/textinput"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

// DeleteConfirmModel represents a deletion confirmation modal with name verification
type DeleteConfirmModel struct {
	clientName       string
	input            textinput.Model
	Visible          bool
	Width            int
	Height           int
	showErrorMessage bool
}

// Local styles for modal
var (
	modalBaseStyle    = lipgloss.NewStyle().Border(lipgloss.RoundedBorder()).BorderForeground(lipgloss.Color("196")).Background(lipgloss.Color("235"))
	modalTitleStyle   = lipgloss.NewStyle().Foreground(lipgloss.Color("226")).Bold(true)
	modalMessageStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("255"))
	modalHelpStyle    = lipgloss.NewStyle().Foreground(lipgloss.Color("241"))
)

// NewDeleteConfirm creates a new deletion confirmation modal
func NewDeleteConfirm(clientName string, width, height int) *DeleteConfirmModel {
	ti := textinput.New()
	ti.Placeholder = "Type client name to confirm"
	ti.Focus()
	ti.CharLimit = 100
	ti.Width = 40

	return &DeleteConfirmModel{
		clientName:       clientName,
		input:            ti,
		Visible:          true,
		Width:            width,
		Height:           height,
		showErrorMessage: false,
	}
}

// Init initializes the deletion confirmation modal
func (m *DeleteConfirmModel) Init() tea.Cmd {
	return textinput.Blink
}

// Update handles messages for the deletion confirmation modal
func (m *DeleteConfirmModel) Update(msg tea.Msg) (*DeleteConfirmModel, tea.Cmd) {
	var cmd tea.Cmd

	switch msg := msg.(type) {
	case tea.KeyMsg:
		switch msg.String() {
		case "esc":
			m.Visible = false
			return m, nil
		case "enter":
			if m.input.Value() == m.clientName {
				m.Visible = false
				return m, nil
			}
			m.showErrorMessage = true
			return m, nil
		}
	}

	m.input, cmd = m.input.Update(msg)
	return m, cmd
}

// View renders the deletion confirmation modal
func (m *DeleteConfirmModel) View() string {
	if !m.Visible {
		return ""
	}

	// Check if input matches client name
	matches := m.input.Value() == m.clientName

	// Build warning section
	warningText := theme.StyleError.Bold(true).MarginTop(1).Render(
		fmt.Sprintf("⚠️  This will permanently delete client '%s'", m.clientName),
	)

	// Build message section
	messageText := modalMessageStyle.Width(60).Render(
		fmt.Sprintf("This action cannot be undone. Please type the client name to confirm deletion."),
	)

	// Build input section
	inputSection := lipgloss.JoinVertical(
		lipgloss.Left,
		"",
		theme.StyleValue.Width(60).Render("Client name:"),
		m.input.View(),
	)

	// Build status section
	var statusText string
	if matches {
		statusText = theme.StyleSuccess.Bold(true).MarginTop(1).Render("✓ Client name matches. Press Enter to confirm deletion.")
	} else if m.showErrorMessage {
		statusText = theme.StyleError.Bold(true).MarginTop(1).Render("✗ Client name does not match. Please try again.")
	} else if m.input.Value() != "" {
		statusText = modalHelpStyle.Render("Client name does not match yet...")
	} else {
		statusText = modalHelpStyle.Render("Type the client name to enable confirmation.")
	}

	// Build help section
	helpText := modalHelpStyle.Render("Esc to cancel • Enter to confirm (when name matches)")

	// Build modal content
	content := lipgloss.JoinVertical(
		lipgloss.Left,
		modalTitleStyle.Render("🗑️  Delete Client"),
		"",
		warningText,
		"",
		messageText,
		inputSection,
		statusText,
		"",
		helpText,
	)

	// Apply modal style
	modal := modalBaseStyle.Padding(1, 3).Render(content)

	// Center modal on screen
	modalWidth := lipgloss.Width(modal)
	modalHeight := lipgloss.Height(modal)

	x := (m.Width - modalWidth) / 2
	if x < 0 {
		x = 0
	}
	y := (m.Height - modalHeight) / 2
	if y < 0 {
		y = 0
	}

	return lipgloss.Place(m.Width, m.Height,
		lipgloss.Left, lipgloss.Top,
		modal,
		lipgloss.WithWhitespaceChars(" "),
		lipgloss.WithWhitespaceForeground(theme.StyleBackground),
	)
}

// IsConfirmed returns true if user confirmed the deletion
func (m *DeleteConfirmModel) IsConfirmed() bool {
	return !m.Visible && m.input.Value() == m.clientName
}

// IsCancelled returns true if user cancelled
func (m *DeleteConfirmModel) IsCancelled() bool {
	return !m.Visible && m.input.Value() != m.clientName
}

// Reset resets the modal for reuse
func (m *DeleteConfirmModel) Reset() {
	m.input.SetValue("")
	m.input.Reset()
	m.Visible = true
	m.showErrorMessage = false
}