package sway

import "encoding/json"

type EventType uint32

const (
	// i3 events
	EventTypeWorkspace EventType = 0x80000000 + iota
	_                  EventType = 0x80000000 + iota // output event not available in sway
	EventTypeMode      EventType = 0x80000000 + iota
	EventTypeWindow    EventType = 0x80000000 + iota
	_                  EventType = 0x80000000 + iota // TODO implement EventTypeBarConfigUpdate
	EventTypeBinding   EventType = 0x80000000 + iota
	EventTypeShutdown  EventType = 0x80000000 + iota
	EventTypeTick      EventType = 0x80000000 + iota

	// sway-only events
	EventTypeBarStateUpdate EventType = 0x80000014
	EventTypeInput          EventType = 0x80000015
)

var eventStringRepresentations = map[EventType]string{
	EventTypeWorkspace: "workspace",
	EventTypeMode:      "mode",
	EventTypeWindow:    "window",
	//EventTypeBarConfigUpdate: "barconfig_update",
	EventTypeBinding:        "binding",
	EventTypeShutdown:       "shutdown",
	EventTypeTick:           "tick",
	EventTypeBarStateUpdate: "bar_state_update",
	EventTypeInput:          "input",
}

func (et EventType) String() string {
	return eventStringRepresentations[et]
}

type Event interface {
	Type() EventType
}

type WorkspaceEvent struct {
	Change  WorkspaceEventChange `json:"change"`
	Current *Workspace           `json:"current"`
	Old     *Workspace           `json:"old"`
}

var _ Event = &WorkspaceEvent{}

func (e WorkspaceEvent) Type() EventType {
	return EventTypeWorkspace
}

func (e WorkspaceEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type ModeEvent struct {
	Change      string `json:"change"`
	PangoMarkup bool   `json:"pango_markup"`
}

var _ Event = &ModeEvent{}

func (e ModeEvent) Type() EventType {
	return EventTypeMode
}

func (e ModeEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type WindowEvent struct {
	Change    WindowEventChange `json:"change"`
	Container *Node             `json:"container"`
}

var _ Event = &WindowEvent{}

func (e WindowEvent) Type() EventType {
	return EventTypeWindow
}

func (e WindowEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type BindingEvent struct {
	Change         string    `json:"change"`
	Command        string    `json:"command"`
	EventStateMask []string  `json:"event_state_mask"`
	InputCode      int       `json:"input_code"`
	Symbol         string    `json:"symbol"`
	InputType      InputType `json:"input_type"`
}

var _ Event = &BindingEvent{}

func (e BindingEvent) Type() EventType {
	return EventTypeBinding
}

func (e BindingEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type ShutdownEvent struct {
	Change string `json:"change"`
}

var _ Event = &ShutdownEvent{}

func (e ShutdownEvent) Type() EventType {
	return EventTypeShutdown
}

func (e ShutdownEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type TickEvent struct {
	First   bool   `json:"first"`
	Payload string `json:"payload"`
}

var _ Event = &TickEvent{}

func (e TickEvent) Type() EventType {
	return EventTypeTick
}

func (e TickEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type BarStateUpdateEvent struct {
	ID                string `json:"id"`
	VisibleByModifier bool   `json:"visible_by_modifier"`
}

var _ Event = &BarStateUpdateEvent{}

func (e BarStateUpdateEvent) Type() EventType {
	return EventTypeBarStateUpdate
}

func (e BarStateUpdateEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}

type InputEvent struct {
	Change InputEventChange `json:"change"`
	//Input  Input  `json:"input"` // TODO implement
}

var _ Event = &InputEvent{}

func (e InputEvent) Type() EventType {
	return EventTypeInput
}

func (e InputEvent) String() string {
	data, _ := json.MarshalIndent(e, "", "\t")
	return string(data)
}