package ui

import (
	"image/color"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/canvas"
	"fyne.io/fyne/v2/widget"
)

// Material Icons unicode constants
// Using Material Symbols from Google Fonts
// https://fonts.google.com/icons
const (
	// Playback controls (ASCII fallback until custom icons)
	IconPlayArrow    = "▶"  // play_arrow
	IconPause        = "||" // pause
	IconStop         = "■"  // stop
	IconSkipPrevious = "|◀" // skip_previous
	IconSkipNext     = "▶|" // skip_next
	IconFastRewind   = "◀◀" // fast_rewind
	IconFastForward  = "▶▶" // fast_forward

	// Frame navigation (for frame-accurate mode)
	IconFramePrevious    = "◀" // navigate_before / chevron_left
	IconFrameNext        = "▶" // navigate_next / chevron_right
	IconKeyframePrevious = "◀◀" // first_page (double chevron left)
	IconKeyframeNext     = "▶▶" // last_page (double chevron right)

	// Volume controls
	IconVolumeUp   = "🔊" // volume_up
	IconVolumeDown = "🔉" // volume_down
	IconVolumeMute = "🔇" // volume_mute
	IconVolumeOff  = "🔇" // volume_off

	// Playlist management
	IconMenu           = "☰" // menu (hamburger)
	IconPlaylistAdd    = "\ue03b" // playlist_add
	IconPlaylistRemove = "\ue958" // playlist_remove
	IconClearAll       = "\ue0b8" // clear_all
	IconPlaylistPlay   = "\ue05f" // playlist_play

	// Cut/edit tools
	IconContentCut  = "\ue14e" // content_cut (scissors)
	IconFileDownload = "\ue2c4" // file_download (export)
	IconClear       = "\ue14c" // clear

	// File operations
	IconFolderOpen = "\ue2c8" // folder_open
	IconFolder     = "\ue2c7" // folder
	IconSave       = "\ue161" // save
	IconPhotoCamera = "\ue412" // photo_camera (screenshot)

	// View/display
	IconFullscreen     = "\ue5d0" // fullscreen
	IconFullscreenExit = "\ue5d1" // fullscreen_exit
	IconAspectRatio    = "\ue85b" // aspect_ratio
	IconClosedCaption  = "\ue01c" // closed_caption (subtitles)
	IconList           = "\ue896" // list (chapters)

	// Settings/options
	IconSettings   = "\ue8b8" // settings
	IconAudiotrack = "\ue3a1" // audiotrack
	IconVideocam   = "\ue04b" // videocam
	IconSpeed      = "\ue9e4" // speed
	IconRepeat     = "\ue040" // repeat (loop)
	IconRepeatOne  = "\ue041" // repeat_one

	// Navigation/UI
	IconArrowBack    = "\ue5c4" // arrow_back
	IconArrowForward = "\ue5c8" // arrow_forward
	IconArrowUpward  = "\ue5d8" // arrow_upward
	IconArrowDown    = "\ue5db" // arrow_downward
	IconClose        = "\ue5cd" // close
	IconMoreVert     = "\ue5d4" // more_vert (3 dots vertical)

	// Status indicators
	IconInfo        = "\ue88e" // info
	IconWarning     = "\ue002" // warning
	IconError       = "\ue000" // error
	IconCheckCircle = "\ue86c" // check_circle (success)
	IconHourglass   = "\ue88b" // hourglass_empty (loading)
)

// NewIconText creates a canvas.Text widget with a Material Icon
// The icon parameter should be one of the Icon* constants above
// Size is the font size in points (e.g., 20, 24, 32)
func NewIconText(icon string, size float32, col color.Color) *canvas.Text {
	text := canvas.NewText(icon, col)
	text.TextSize = size
	text.TextStyle = fyne.TextStyle{Monospace: true}
	return text
}

// NewIconButton creates a button with a Material Icon
// Uses the same signature as utils.MakeIconButton for easy replacement
func NewIconButton(icon, tooltip string, tapped func()) *widget.Button {
	btn := widget.NewButton(icon, tapped)
	btn.Importance = widget.LowImportance
	return btn
}

// IconButtonWithStyle creates a button with custom styling
func IconButtonWithStyle(icon, tooltip string, importance widget.ButtonImportance, tapped func()) *widget.Button {
	btn := widget.NewButton(icon, tapped)
	btn.Importance = importance
	return btn
}

// GetPlayPauseIcon returns the appropriate icon based on paused state
func GetPlayPauseIcon(isPaused bool) string {
	if isPaused {
		return IconPlayArrow
	}
	return IconPause
}

// GetVolumeIcon returns the appropriate volume icon based on volume level
func GetVolumeIcon(volume float64, muted bool) string {
	if muted || volume == 0 {
		return IconVolumeOff
	}
	if volume < 30 {
		return IconVolumeMute
	}
	if volume < 70 {
		return IconVolumeDown
	}
	return IconVolumeUp
}

// MaterialIconsAvailable checks if Material Icons font is loaded
// This can be extended to actually check font availability
func MaterialIconsAvailable() bool {
	// For now, return true - icons will render as unicode
	// Later: check if Material Symbols font is loaded
	return true
}