package d2ui

import (
	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
)

// static check if SwitchableButton implemented widget
var _ Widget = &SwitchableButton{}

// SwitchableButton represents switchable button widget
type SwitchableButton struct {
	*BaseWidget
	active       *Button
	inactive     *Button
	onActivate   func()
	onDeactivate func()
	state        bool
}

// NewSwitchableButton creates new switchable button
func (ui *UIManager) NewSwitchableButton(active, inactive *Button, state bool) *SwitchableButton {
	base := NewBaseWidget(ui)

	sbtn := &SwitchableButton{
		BaseWidget: base,
		active:     active,
		inactive:   inactive,
		state:      state,
	}
	sbtn.bindManager(ui)
	sbtn.SetVisible(false)

	sbtn.OnActivated(func() {})
	sbtn.OnDeactivated(func() {})

	ui.addWidget(sbtn)

	return sbtn
}

// SetVisible sets widget's visibility
func (sbtn *SwitchableButton) SetVisible(visible bool) {
	if !visible {
		sbtn.active.SetVisible(false)
		sbtn.inactive.SetVisible(false)

		return
	}

	if sbtn.state {
		sbtn.active.SetVisible(true)
		sbtn.inactive.SetVisible(false)
	} else {
		sbtn.active.SetVisible(false)
		sbtn.inactive.SetVisible(true)
	}
}

// OnActivated sets onActivate callback
func (sbtn *SwitchableButton) OnActivated(cb func()) {
	sbtn.active.OnActivated(func() {
		cb()
		sbtn.state = false
		sbtn.SetVisible(sbtn.GetVisible())
	})
}

// Activate switches widget into active state
func (sbtn *SwitchableButton) Activate() {
	sbtn.onActivate()
}

// OnDeactivated sets onDeactivate callback
func (sbtn *SwitchableButton) OnDeactivated(cb func()) {
	sbtn.inactive.OnActivated(func() {
		cb()
		sbtn.state = true
		sbtn.SetVisible(sbtn.GetVisible())
	})
}

// Deactivate switch widget to inactive state
func (sbtn *SwitchableButton) Deactivate() {
	sbtn.onDeactivate()
}

// SetState sets button's state
func (sbtn *SwitchableButton) SetState(state bool) {
	sbtn.state = state
	sbtn.SetVisible(sbtn.GetVisible())
}

// SetActiveTooltip sets tooltip of active button's
func (sbtn *SwitchableButton) SetActiveTooltip(tooltip *Tooltip) {
	sbtn.active.SetTooltip(tooltip)
}

// SetInactiveTooltip sets tooltip of inactive button's
func (sbtn *SwitchableButton) SetInactiveTooltip(tooltip *Tooltip) {
	sbtn.inactive.SetTooltip(tooltip)
}

// SetPosition sets widget's position
func (sbtn *SwitchableButton) SetPosition(x, y int) {
	sbtn.BaseWidget.SetPosition(x, y)
	sbtn.active.SetPosition(x, y)
	sbtn.inactive.SetPosition(x, y)
}

// GetSize returns current button's size
func (sbtn *SwitchableButton) GetSize() (x, y int) {
	if sbtn.state {
		x, y = sbtn.active.GetSize()
	} else {
		x, y = sbtn.inactive.GetSize()
	}

	return x, y
}

// SetEnabled sets button's enabled
func (sbtn *SwitchableButton) SetEnabled(enabled bool) {
	sbtn.active.SetEnabled(enabled)
	sbtn.inactive.SetEnabled(enabled)
}

// GetEnabled returns true if current switcher position is enabled
func (sbtn *SwitchableButton) GetEnabled() bool {
	if sbtn.state {
		return sbtn.active.GetEnabled()
	}

	return sbtn.inactive.GetEnabled()
}

// SetDisabledColor sets switcher's disabled color
func (sbtn *SwitchableButton) SetDisabledColor(color uint32) {
	sbtn.active.buttonLayout.DisabledColor = color
	sbtn.inactive.buttonLayout.DisabledColor = color
}

// Advance advances widget
func (sbtn *SwitchableButton) Advance(_ float64) error {
	// noop
	return nil
}

// Render renders widget
func (sbtn *SwitchableButton) Render(target d2interface.Surface) {
	if sbtn.active.GetVisible() {
		sbtn.active.Render(target)
	}

	if sbtn.inactive.GetVisible() {
		sbtn.inactive.Render(target)
	}
}