package header

import (
	"fmt"
	"path/filepath"
	"time"

	"github.com/charmbracelet/lipgloss"
	"playback/internal/ui"
)

// Model represents the header component
type Model struct {
	AudioPath      string
	TranscriptPath string
	IsTemp         bool
	Width          int
}

// New creates a new header model
func New() Model {
	return Model{}
}

// SetPaths sets the file paths
func (m *Model) SetPaths(audioPath, transcriptPath string, isTemp bool) {
	m.AudioPath = audioPath
	m.TranscriptPath = transcriptPath
	m.IsTemp = isTemp
}

// SetWidth sets the header width
func (m *Model) SetWidth(width int) {
	m.Width = width
}

// formatDuration formats a duration as MM:SS
func formatDuration(d time.Duration) string {
	d = d.Round(time.Second)
	m := d / time.Minute
	s := (d % time.Minute) / time.Second
	return fmt.Sprintf("%02d:%02d", m, s)
}

// View renders the header
func (m Model) View(position, duration time.Duration, playing bool) string {
	// Title
	title := ui.HeaderStyle.Render("♪ Playback")

	// File info
	audioName := filepath.Base(m.AudioPath)
	transcriptName := filepath.Base(m.TranscriptPath)
	if m.IsTemp {
		transcriptName += " (temp)"
	}

	fileInfo := ui.FilePathStyle.Render(
		fmt.Sprintf("Audio: %s | Transcript: %s", audioName, transcriptName),
	)

	// Playback status
	status := "⏸ Paused"
	if playing {
		status = "▶ Playing"
	}

	timeInfo := fmt.Sprintf("%s / %s", formatDuration(position), formatDuration(duration))

	statusStyle := lipgloss.NewStyle().Foreground(ui.ColorSecondary)
	if !playing {
		statusStyle = lipgloss.NewStyle().Foreground(ui.ColorMuted)
	}

	rightSide := lipgloss.JoinHorizontal(
		lipgloss.Center,
		statusStyle.Render(status),
		"  ",
		ui.BaseStyle.Render(timeInfo),
	)

	// Layout
	leftWidth := lipgloss.Width(title) + lipgloss.Width(fileInfo) + 2
	rightWidth := lipgloss.Width(rightSide)
	spacerWidth := m.Width - leftWidth - rightWidth - 4
	if spacerWidth < 1 {
		spacerWidth = 1
	}

	return lipgloss.JoinHorizontal(
		lipgloss.Center,
		title,
		"  ",
		fileInfo,
		lipgloss.NewStyle().Width(spacerWidth).Render(""),
		rightSide,
	)
}