package gio

import (
	"gioui.org/layout"
	"gioui.org/unit"
	"gioui.org/widget"
	"gioui.org/widget/material"

	"softbox.local/core/application"
)

func (shell *AppShell) layoutHeader(
	gtx layout.Context,
	theme *material.Theme,
) layout.Dimensions {
	return layout.Flex{Axis: layout.Vertical}.Layout(
		gtx,
		layout.Rigid(func(gtx layout.Context) layout.Dimensions {
			return layout.Flex{Alignment: layout.Middle}.Layout(
				gtx,
				layout.Rigid(func(gtx layout.Context) layout.Dimensions {
					return layout.Flex{Axis: layout.Vertical}.Layout(
						gtx,
						layout.Rigid(material.H5(theme, "SoftBox Legacy").Layout),
						layout.Rigid(func(gtx layout.Context) layout.Dimensions {
							label := material.Caption(theme, "兼容 Windows 7 SP1 的可信软件目录")
							label.Color = shellColors.secondary
							return label.Layout(gtx)
						}),
					)
				}),
				layout.Rigid(layout.Spacer{Width: unit.Dp(32)}.Layout),
				layout.Flexed(1, func(gtx layout.Context) layout.Dimensions {
					border := shellColors.border
					if gtx.Focused(&shell.search) {
						border = shellColors.primary
					}
					return outlinedPanel(
						gtx,
						border,
						shellColors.surface,
						unit.Dp(6),
						layout.Inset{
							Top: unit.Dp(9), Bottom: unit.Dp(9),
							Left: unit.Dp(12), Right: unit.Dp(12),
						},
						func(gtx layout.Context) layout.Dimensions {
							editor := material.Editor(theme, &shell.search, "搜索名称、ID 或标签")
							editor.TextSize = unit.Sp(14)
							return editor.Layout(gtx)
						},
					)
				}),
			)
		}),
		layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
		layout.Rigid(func(gtx layout.Context) layout.Dimensions {
			categories := append([]string{""}, shell.model.Categories()...)
			height := gtx.Dp(unit.Dp(44))
			gtx.Constraints.Min.Y = height
			gtx.Constraints.Max.Y = height
			return shell.categoryList.Layout(gtx, len(categories), func(
				gtx layout.Context,
				index int,
			) layout.Dimensions {
				category := categories[index]
				label := category
				if label == "" {
					label = "全部分类"
				}
				return layout.Inset{Right: unit.Dp(6)}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
					return shell.layoutFilterButton(
						gtx,
						theme,
						shell.categoryControls[category],
						label,
						shell.model.Category() == category,
					)
				})
			})
		}),
	)
}

func (shell *AppShell) layoutViewButton(
	gtx layout.Context,
	theme *material.Theme,
	clickable *widget.Clickable,
	label string,
	view application.CatalogView,
) layout.Dimensions {
	gtx.Constraints.Min.X = gtx.Constraints.Max.X
	return shell.layoutFilterButton(
		gtx,
		theme,
		clickable,
		label,
		shell.model.View() == view,
	)
}

func (shell *AppShell) layoutFilterButton(
	gtx layout.Context,
	theme *material.Theme,
	clickable *widget.Clickable,
	label string,
	active bool,
) layout.Dimensions {
	gtx.Constraints.Min.Y = gtx.Dp(unit.Dp(44))
	button := material.Button(theme, clickable, label)
	button.CornerRadius = unit.Dp(5)
	button.Inset = layout.Inset{
		Top: unit.Dp(10), Bottom: unit.Dp(10),
		Left: unit.Dp(12), Right: unit.Dp(12),
	}
	if active {
		button.Background = shellColors.primary
		button.Color = shellColors.onPrimary
	} else {
		button.Background = shellColors.muted
		button.Color = shellColors.foreground
	}
	return button.Layout(gtx)
}