package aluminumStyle

import "image/color"
import "git.tebibyte.media/tomo/tomo"
import "golang.org/x/image/font/basicfont"

func hex (color uint32) (c color.RGBA) {
	c.A = uint8(color)
	c.B = uint8(color >>  8)
	c.G = uint8(color >> 16)
	c.R = uint8(color >> 24)
	return
}

func border (top, right, bottom, left uint32, width ...int) tomo.Border {
	return tomo.Border {
		Width: tomo.I(width...),
		Color: [4]color.Color {
			hex(top),    hex(right),
			hex(bottom), hex(left),
		},
	}
}

var colorDot                   = hex(0x7391c080)
var colorFocus                 = hex(0x5f8bc4FF)
var colorHighlight             = hex(0x5f8bc4FF)
var colorBackground            = hex(0xd4d4d4FF)
var colorForeground            = color.Black

var colorOutline               = color.Black
var colorGutter                = hex(0xbfc6d1FF)
var colorGutterHovered         = hex(0xc5cbd6FF)
var colorRaised                = hex(0xe9eaeaFF)
var colorRaisedPressed         = hex(0xccd4ddFF)
var colorRaisedFocused         = hex(0xcfd6ddFF)
var colorRaisedHovered         = hex(0xf1f3f5FF)
var colorSunken                = hex(0xe9eaeaFF)
var colorSunkenFocused         = hex(0xe0e6eeFF)
var colorSunkenPressed         = hex(0xe0e6eeFF)
var colorCalendarWeekdayHeader = hex(0xd3cac2FF)
var colorCalendarWeekend       = hex(0xc2d3c4FF)
var colorCalendarDay           = hex(0xd6dae2FF)

var outline = tomo.Border {
	Width: tomo.I(1),
	Color: [4]color.Color {
		colorOutline,
		colorOutline,
		colorOutline,
		colorOutline,
	},
}

var borderEngraved       = border(0xc3c3c5FF, 0xe3e3e3FF, 0xe9e9e9ff, 0xc2c2c2ff, 1)
var borderGap            = border(0x697c7cFF, 0x566767FF, 0x566767ff, 0x697c7cff, 1)
var borderLifted         = border(0xf9fafcFF, 0xc2c8d3FF, 0xa4afc0ff, 0xf5f6f8ff, 1)
var borderLiftedFocused  = border(0xf0f4f9FF, 0xb1bacaFF, 0x9aa6b7ff, 0xe4e9eeff, 1)
var borderFocused        = border(0x5f8bc4FF, 0x5f8bc4FF, 0x5f8bc4ff, 0x5f8bc4ff, 1)
var borderTear           = borderEngraved
var borderTearFocused    = border(0x7f94b5FF, 0xced7e4FF, 0xced7e4FF, 0x7f94b5FF, 1)
var borderTearPad        = border(0x00000000, 0x00000000, 0x00000000, 0x00000000, 3)
var borderTearPadFocused = border(0x7391c080, 0x7391c080, 0x7391c080, 0x7391c080, 3)
var borderInnerShadow    = border(0xa4afc0FF, 0xa4afc0FF, 0xa4afc0ff, 0xa4afc0ff, 1, 0, 0, 1)
var borderOuterShadow    = border(0xa4afc0FF, 0xa4afc0FF, 0xa4afc0ff, 0xa4afc0ff, 0, 1, 1, 0)

var rules = []style.Rule {
	// *.*[*]
	style.Rule {
		Default: style.AS (
			style.AttrFace      { Face:  basicfont.Face7x13    },
			style.AttrTextColor { Color: tomo.ColorForeground  },
			style.AttrDotColor  { Color: colorDot              },
			style.AttrGap       { X: 8, Y: 8                   },
		),
	},

	// *.Button[*]
	style.Rule {
		Role: tomo.R("", "Button", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderLifted,
			},
			style.AttrPadding(tomo.I(4, 8)),
			style.AttrColor { Color: tomo.ColorRaised },
		),
		Pressed: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrPadding(tomo.I(5, 8, 4, 9)),
			style.AttrColor { Color: colorRaisedPressed },
		),
		Focused: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderLiftedFocused,
			},
			style.AttrPadding(tomo.I(4, 8)),
			style.AttrColor { Color: colorRaisedFocused },
		),
		Hovered: style.AS (
			style.AttrColor { Color: colorRaisedHovered },
		),
	},

	// *.TextInput[*]
	style.Rule {
		Role: tomo.R("", "TextInput", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrColor { Color: tomo.ColorSunken },
			style.AttrPadding(tomo.I(5, 4, 4, 5)),
		),
		Focused: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderFocused,
				borderInnerShadow,
			},
		),
	},

	// *.TextView[*]
	style.Rule {
		Role: tomo.R("", "TextView", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrColor { Color: tomo.ColorSunken },
			style.AttrPadding(tomo.I(8)),
		),
	},
	
	// *.NumberInput[*]
	style.Rule {
		Role: tomo.R("", "NumberInput", ""),
		Default: style.AS (
			style.AttrGap { },
		),
	},

	// *.Container[sunken]
	style.Rule {
		Role: tomo.R("", "Container", "sunken"),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrColor { Color: tomo.ColorSunken },
			style.AttrPadding(tomo.I(8)),
		),
	},

	// *.Container[outer]
	style.Rule {
		Role: tomo.R("", "Container", "outer"),
		Default: style.AS (
			style.AttrColor { Color: tomo.ColorBackground },
			style.AttrPadding(tomo.I(8)),
		),
	},

	// *.Container[menu]
	style.Rule {
		Role: tomo.R("", "Container", "menu"),
		Default: style.AS (
			style.AttrBorder {
				borderGap,
				borderLifted,
			},
			style.AttrColor { Color: tomo.ColorBackground },
			style.AttrGap { },
		),
	},

	// *.Heading[*]
	style.Rule {
		Role: tomo.R("", "Heading", ""),
		Default: style.AS (
			style.AttrAlign { X: tomo.AlignMiddle, Y: tomo.AlignMiddle },
		),
	},

	// *.Separator[*]
	style.Rule {
		Role: tomo.R("", "Separator", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
			},
		),
	},

	// *.Slider[*]
	style.Rule {
		Role: tomo.R("", "Slider", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrColor { Color: colorGutter },
		),
		Focused: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderFocused,
				borderInnerShadow,
			},
		),
		Hovered: style.AS (
			style.AttrColor { Color: colorGutterHovered },
		),
	},
	
	// *.Slider[horizontal]
	style.Rule {
		Role: tomo.R("", "Slider", "horizontal"),
		Default: style.AS(style.AttrMinimumSize { X: 48 }),
	},
	
	// *.Slider[vertical]
	style.Rule {
		Role: tomo.R("", "Slider", "vertical"),
		Default: style.AS(style.AttrMinimumSize { Y: 48 }),
	},

	// *.SliderHandle[*]
	style.Rule {
		Role: tomo.R("", "SliderHandle", ""),
		Default: style.AS (
			style.AttrBorder {
				borderOuterShadow,
				borderGap,
				borderLifted,
			},
			style.AttrColor { Color: tomo.ColorRaised },
			style.AttrMinimumSize { X: 12, Y: 12, },
		),
	},

	// *.Checkbox[*]
	style.Rule {
		Role: tomo.R("", "Checkbox", ""),
		Default: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderGap,
				borderInnerShadow,
			},
			style.AttrColor { Color: tomo.ColorSunken },
			style.AttrPadding(tomo.I(0, 1, 1, 0)),
			style.AttrMinimumSize { X: 19, Y: 19 },
		),
		Focused: style.AS (
			style.AttrBorder {
				borderEngraved,
				borderFocused,
				borderInnerShadow,
			},
			style.AttrPadding(tomo.I(0)),
			style.AttrColor { Color: colorSunkenFocused },
		),
	},

	// *.LabelCheckbox[*]
	style.Rule {
		Role: tomo.R("", "LabelCheckbox", ""),
		Default: style.AS (
			style.AttrGap { X: 8, Y: 8 },
		),
	},

	// *.MenuItem[*]
	style.Rule {
		Role: tomo.R("", "MenuItem", ""),
		Default: style.AS (
			style.AttrPadding(tomo.I(4)),
			style.AttrGap { X: 4, Y: 4 },
			style.AttrColor { Color: color.Transparent },
		),
		Hovered: style.AS (
			style.AttrColor { Color: colorDot },
		),
		Focused: style.AS (
			style.AttrColor { Color: colorDot },
		),
	},

	// *.File[*]
	style.Rule {
		Role: tomo.R("", "File", ""),
		Default: style.AS (
			style.AttrColor { Color: color.Transparent },
		),
		Focused: style.AS (
			style.AttrColor { Color: colorDot },
		),
	},
	
	// *.TearLine[*]
	style.Rule {
		Role: tomo.R("", "TearLine", ""),
		Default: style.AS (
			style.AttrBorder {
				borderTearPad,
				borderTear,
			},
		),
		Hovered: style.AS (
			style.AttrBorder {
				borderTearPadFocused,
				borderTearFocused,
			},
		),
		Focused: style.AS (
			style.AttrBorder {
				borderTearPadFocused,
				borderTearFocused,
			},
		),
	},
	
	// *.Calendar[*]
	style.Rule {
		Role: tomo.R("", "Calendar", ""),
		Default: style.AS (
			style.AttrBorder {
				borderOuterShadow,
				borderGap,
			},
			style.AttrColor { Color: tomo.ColorRaised },
			style.AttrPadding(tomo.I(2)),
			style.AttrGap { X: 2, Y: 2 },
		),
	},
	
	// *.CalendarGrid[*]
	style.Rule {
		Role: tomo.R("", "CalendarGrid", ""),
		Default: style.AS (
			style.AttrGap { X: 2, Y: 2 },
		),
	},
	
	// *.CalendarWeekdayHeader[*]
	style.Rule {
		Role: tomo.R("", "CalendarWeekdayHeader", ""),
		Default: style.AS (
			style.AttrPadding(tomo.I(2)),
			style.AttrColor { Color: colorCalendarWeekdayHeader },
		),
	},
	
	// *.CalendarDay[weekday]
	style.Rule {
		Role: tomo.R("", "CalendarDay", "weekday"),
		Default: style.AS (
			style.AttrPadding(tomo.I(2)),
			style.AttrMinimumSize { X: 32, Y: 32 },
			style.AttrColor { Color: colorCalendarDay },
		),
	},

	// *.CalendarDay[weekend]
	style.Rule {
		Role: tomo.R("", "CalendarDay", "weekend"),
		Default: style.AS (
			style.AttrPadding(tomo.I(2)),
			style.AttrMinimumSize { X: 32, Y: 32 },
			style.AttrColor { Color: colorCalendarWeekend },
		),
	},
}