package fallbackStyle

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

var colorFocus         = color.RGBA { R:  61, G: 128, B: 143, A: 255 }
var colorInput         = color.RGBA { R: 208, G: 203, B: 150, A: 255 }
var colorCarved        = color.RGBA { R: 151, G: 160, B: 150, A: 255 }
var colorGutter        = color.RGBA { R: 116, G: 132, B: 126, A: 255 }
var colorShadow        = color.RGBA { R:  57, G:  59, B:  57, A: 255 }
var colorInputShadow   = color.RGBA { R: 143, G: 146, B:  91, A: 255 }
var colorHighlight     = color.RGBA { R: 207, G: 215, B: 210, A: 255 }
var colorBackground    = color.RGBA { R: 169, G: 171, B: 168, A: 255 }
var colorCarvedPressed = color.RGBA { R: 129, G: 142, B: 137, A: 255 }
var colorForeground    = color.Black
var colorOutline       = color.Black

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

var borderColorEngraved = [4]color.Color { colorShadow,      colorHighlight, colorHighlight, colorShadow }
var borderColorLifted   = [4]color.Color { colorHighlight,   colorShadow,    colorShadow,    colorHighlight }
var borderColorInput    = [4]color.Color { colorInputShadow, colorInput,     colorInput,     colorInputShadow }
var borderColorFocused  = [4]color.Color { colorFocus,       colorFocus,     colorFocus,     colorFocus }

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

	// *.Button[*]
	style.Rule {
		Role: tomo.R("", "Button", ""),
		Default: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorLifted,
				},
			},
			style.AttrPadding(tomo.I(4, 8)),
			style.AttrColor { Color: tomo.ColorRaised },
		),
		Pressed: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1, 0, 0, 1),
					Color: borderColorEngraved,
				},
			},
			style.AttrPadding(tomo.I(5, 8, 4, 9)),
			style.AttrColor { Color: colorCarvedPressed },
		),
		Focused: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorFocused,
				},
			},
			style.AttrPadding(tomo.I(4, 8)),
		),
	},

	// *.TextInput[*]
	style.Rule {
		Role: tomo.R("", "TextInput", ""),
		Default: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorInput,
				},
			},
			style.AttrColor { Color: colorInput },
			style.AttrPadding(tomo.I(5, 4, 4, 5)),
		),
		Focused: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorFocused,
				},
			},
		),
	},

	// *.TextView[*]
	style.Rule {
		Role: tomo.R("", "TextView", ""),
		Default: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1, 0, 0, 1),
					Color: borderColorEngraved,
				},
			},
			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 {
				outline,
				tomo.Border {
					Width: tomo.I(1, 0, 0, 1),
					Color: borderColorEngraved,
				},
			},
			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 {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorLifted,
				},
			},
			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 {
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorEngraved,
				},
			},
		),
	},

	// *.Slider[*]
	style.Rule {
		Role: tomo.R("", "Slider", ""),
		Default: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1, 0, 0, 1),
					Color: borderColorEngraved,
				},
			},
			style.AttrColor { Color: colorGutter },
			style.AttrPadding(tomo.I(0, 1, 1, 0)),
		),
		Focused: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorFocused,
				},
			},
			style.AttrPadding(tomo.I(0)),
		),
	},
	
	// *.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 {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorLifted,
				},
			},
			style.AttrColor { Color: tomo.ColorRaised },
			style.AttrMinimumSize { X: 12, Y: 12, },
		),
	},

	// *.Checkbox[*]
	style.Rule {
		Role: tomo.R("", "Checkbox", ""),
		Default: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1, 0, 0, 1),
					Color: borderColorEngraved,
				},
			},
			style.AttrColor { Color: tomo.ColorSunken },
			style.AttrPadding(tomo.I(0, 1, 1, 0)),
			style.AttrMinimumSize { X: 19, Y: 19 },
		),
		Focused: style.AS (
			style.AttrBorder {
				outline,
				tomo.Border {
					Width: tomo.I(1),
					Color: borderColorFocused,
				},
			},
			style.AttrPadding(tomo.I(0)),
		),
	},

	// *.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: tomo.ColorAccent },
		),
		Focused: style.AS (
			style.AttrColor { Color: tomo.ColorAccent },
		),
	},

	// *.File[*]
	style.Rule {
		Role: tomo.R("", "File", ""),
		Default: style.AS (
			style.AttrColor { Color: color.Transparent },
		),
		Focused: style.AS (
			style.AttrColor { Color: tomo.ColorAccent },
		),
	},

	// *.TearLine[*]
	style.Rule {
		Role: tomo.R("", "TearLine", ""),
		Default: style.AS (
			style.AttrBorder {
				tomo.Border {
					Width: tomo.I(3),
					Color: [4]color.Color {
						color.Transparent,
						color.Transparent,
						color.Transparent,
						color.Transparent,
					},
				},
			},
			style.AttrColor { Color: tomo.ColorForeground },
			style.AttrPadding(tomo.I(1, 0, 0, 1)),
		),
		Hovered: style.AS (
			style.AttrBorder {
				tomo.Border {
					Width: tomo.I(3),
					Color: borderColorFocused,
				},
			},
		),
		Focused: style.AS (
			style.AttrBorder {
				tomo.Border {
					Width: tomo.I(3),
					Color: borderColorFocused,
				},
			},
		),
	},
}