package ui

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

	"git.wxccs.org/iceking2nd/winauth-go/internal/i18n"
)

// settingsAction is what the settings popup returns to the caller.
type settingsAction int

const (
	settingsActionNone settingsAction = iota
	settingsActionSetPassword
	settingsActionChangePassword
	settingsActionImportLegacy
	settingsActionExport
	settingsActionRestoreBackup
	settingsActionPreferences
	settingsActionAbout
)

// settingsMenu is the small popup that opens when the user clicks the
// gear button in the main window's top bar.
type settingsMenu struct {
	setPwBtn    widget.Clickable
	changePwBtn widget.Clickable
	importBtn   widget.Clickable
	exportBtn   widget.Clickable
	restoreBtn  widget.Clickable
	prefsBtn    widget.Clickable
	aboutBtn    widget.Clickable
	cancelBtn   widget.Clickable
}

func newSettingsMenu() *settingsMenu { return &settingsMenu{} }

// Pick returns the chosen action and whether the menu should close.
func (m *settingsMenu) Pick(gtx layout.Context) (settingsAction, bool) {
	switch {
	case m.setPwBtn.Clicked(gtx):
		return settingsActionSetPassword, true
	case m.changePwBtn.Clicked(gtx):
		return settingsActionChangePassword, true
	case m.importBtn.Clicked(gtx):
		return settingsActionImportLegacy, true
	case m.exportBtn.Clicked(gtx):
		return settingsActionExport, true
	case m.restoreBtn.Clicked(gtx):
		return settingsActionRestoreBackup, true
	case m.prefsBtn.Clicked(gtx):
		return settingsActionPreferences, true
	case m.aboutBtn.Clicked(gtx):
		return settingsActionAbout, true
	case m.cancelBtn.Clicked(gtx):
		return settingsActionNone, true
	}
	return settingsActionNone, false
}

func (m *settingsMenu) Layout(gtx layout.Context, th *material.Theme) layout.Dimensions {
	fillBackground(gtx, activePalette.ScrimBg)

	row := func(btn *widget.Clickable, label string) layout.FlexChild {
		return layout.Rigid(func(gtx layout.Context) layout.Dimensions {
			return layout.Inset{Top: unit.Dp(4), Bottom: unit.Dp(4)}.Layout(gtx,
				func(gtx layout.Context) layout.Dimensions {
					gtx.Constraints.Min.X = gtx.Constraints.Max.X
					return material.Button(th, btn, label).Layout(gtx)
				})
		})
	}

	return layout.Center.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
		gtx.Constraints.Max.X = gtx.Dp(280)
		return widget.Border{
			Color:        activePalette.DialogBorder,
			CornerRadius: unit.Dp(4),
			Width:        unit.Dp(1),
		}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
			fillBackground(gtx, activePalette.DialogBg)
			return layout.UniformInset(unit.Dp(16)).Layout(gtx, func(gtx layout.Context) layout.Dimensions {
				return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
					layout.Rigid(material.H6(th, i18n.T("menu_settings")).Layout),
					layout.Rigid(layout.Spacer{Height: unit.Dp(12)}.Layout),
					row(&m.setPwBtn, i18n.T("menu_set_password")),
					row(&m.changePwBtn, i18n.T("menu_change_password")),
					row(&m.importBtn, i18n.T("menu_import_legacy")),
					row(&m.exportBtn, i18n.T("menu_export")),
					row(&m.restoreBtn, i18n.T("menu_restore_backup")),
					row(&m.prefsBtn, i18n.T("menu_preferences")),
					row(&m.aboutBtn, i18n.T("menu_about")),
					layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
					layout.Rigid(func(gtx layout.Context) layout.Dimensions {
						return layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceStart}.Layout(gtx,
							layout.Rigid(material.Button(th, &m.cancelBtn, i18n.T("btn_cancel")).Layout),
						)
					}),
				)
			})
		})
	})
}