// package theme defines a custom Fyne theme with Minecraft-inspired colors.
package theme

import (
	"image/color"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/theme"
)

// MinecraftTheme is a dark theme inspired by Minecraft's UI palette.
type MinecraftTheme struct{}

var _ fyne.Theme = (*MinecraftTheme)(nil)

// Color returns the named color from the Minecraft palette.
func (t *MinecraftTheme) Color(name fyne.ThemeColorName, variant fyne.ThemeVariant) color.Color {
	switch name {
	case theme.ColorNameBackground:
		return color.RGBA{R: 30, G: 30, B: 30, A: 255} // dark stone
	case theme.ColorNameButton:
		return color.RGBA{R: 100, G: 100, B: 100, A: 255} // stone gray
	case theme.ColorNameDisabled:
		return color.RGBA{R: 80, G: 80, B: 80, A: 255}
	case theme.ColorNameDisabledButton:
		return color.RGBA{R: 60, G: 60, B: 60, A: 255}
	case theme.ColorNameError:
		return color.RGBA{R: 200, G: 50, B: 50, A: 255}
	case theme.ColorNameFocus:
		return color.RGBA{R: 76, G: 175, B: 80, A: 255} // green accent
	case theme.ColorNameForeground:
		return color.RGBA{R: 220, G: 220, B: 220, A: 255} // light gray
	case theme.ColorNameHover:
		return color.RGBA{R: 76, G: 175, B: 80, A: 255} // green
	case theme.ColorNameInputBackground:
		return color.RGBA{R: 50, G: 50, B: 50, A: 255}
	case theme.ColorNameInputBorder:
		return color.RGBA{R: 80, G: 80, B: 80, A: 255}
	case theme.ColorNameMenuBackground:
		return color.RGBA{R: 40, G: 40, B: 40, A: 255}
	case theme.ColorNameOverlayBackground:
		return color.RGBA{R: 0, G: 0, B: 0, A: 180}
	case theme.ColorNamePlaceHolder:
		return color.RGBA{R: 150, G: 150, B: 150, A: 255}
	case theme.ColorNamePressed:
		return color.RGBA{R: 56, G: 142, B: 60, A: 255} // dark green
	case theme.ColorNamePrimary:
		return color.RGBA{R: 76, G: 175, B: 80, A: 255} // green
	case theme.ColorNameScrollBar:
		return color.RGBA{R: 80, G: 80, B: 80, A: 200}
	case theme.ColorNameSeparator:
		return color.RGBA{R: 60, G: 60, B: 60, A: 255}
	case theme.ColorNameShadow:
		return color.RGBA{R: 0, G: 0, B: 0, A: 128}
	default:
		return theme.DefaultTheme().Color(name, variant)
	}
}

// Font returns the default font (custom TTF can be added later).
func (t *MinecraftTheme) Font(style fyne.TextStyle) fyne.Resource {
	return theme.DefaultTheme().Font(style)
}

// Icon returns the named icon resource.
func (t *MinecraftTheme) Icon(name fyne.ThemeIconName) fyne.Resource {
	return theme.DefaultTheme().Icon(name)
}

// Size returns the named size value.
func (t *MinecraftTheme) Size(name fyne.ThemeSizeName) float32 {
	switch name {
	case theme.SizeNameCaptionText:
		return 11
	case theme.SizeNameInlineIcon:
		return 20
	case theme.SizeNamePadding:
		return 4
	case theme.SizeNameScrollBar:
		return 12
	case theme.SizeNameScrollBarSmall:
		return 4
	case theme.SizeNameText:
		return 14
	case theme.SizeNameHeadingText:
		return 24
	case theme.SizeNameSubHeadingText:
		return 18
	default:
		return theme.DefaultTheme().Size(name)
	}
}