package main

import (
	"context"
	"fmt"
	"time"

	"kvmote/internal/input"
	"kvmote/internal/kvm"
	"kvmote/internal/transport"

	"github.com/wailsapp/wails/v2/pkg/runtime"
)

// App struct
type App struct {
	ctx    context.Context
	engine *kvm.Engine

	// Estado da janela (pixels físicos Win32)
	origX, origY int32
	origW, origH int32
	isMini       bool
}

// NewApp creates a new App application struct
func NewApp() *App {
	t := transport.NewBleTransport()
	h := input.NewInputHandler()
	e := kvm.NewEngine(t, h)
	app := &App{
		engine: e,
	}
	e.SetWindowManager(app) // Vincula o app como gerenciador de janela da engine
	return app
}

const miniW, miniH = int32(300), int32(100)

func (a *App) SetMiniMode() {
	if a.isMini {
		return
	}

	// Salva posição/tamanho via Win32 (pixels físicos — mesma base do MoveWindow)
	wx, wy := a.engine.GetWindowPos()
	ww, wh := a.engine.GetWindowSize()
	if ww > 200 {
		a.origX, a.origY = wx, wy
		a.origW, a.origH = ww, wh
	}

	a.isMini = true
	runtime.EventsEmit(a.ctx, "window-mode", "mini")

	// Posiciona usando Win32 SetWindowPos (evita mistura de coordenadas lógicas/físicas)
	// MonitorFromWindow garante monitor correto em setups multi-monitor
	mx, my, mw, mh := a.engine.GetMonitorWorkArea()
	tx := mx + mw - miniW - 20
	ty := my + mh - miniH - 50
	a.engine.MoveWindow(tx, ty, miniW, miniH, true) // topmost=true
}

func (a *App) RestoreNormalMode() {
	if !a.isMini {
		return
	}
	a.isMini = false
	runtime.EventsEmit(a.ctx, "window-mode", "normal")

	// Restaura via Win32 (mesma base de coordenadas do SetMiniMode)
	a.engine.MoveWindow(a.origX, a.origY, a.origW, a.origH, false)
}

// startup is called when the app starts. The context is saved
// so we can call the runtime methods
func (a *App) startup(ctx context.Context) {
	a.ctx = ctx
	err := a.engine.Start(ctx)
	if err != nil {
		fmt.Printf("Error starting engine: %v\n", err)
	}
}

func (a *App) Connect() string {
	err := a.engine.Start(a.ctx)
	if err != nil {
		return fmt.Sprintf("Erro Hook: %v", err)
	}

	// Lógica real de conexão Bluetooth
	ctx, cancel := context.WithTimeout(a.ctx, 10*time.Second)
	defer cancel()

	ok, err := a.engine.Transport().Detect(ctx)
	if err != nil || !ok {
		return "Erro: KVMote não encontrado"
	}

	err = a.engine.Transport().Connect(ctx)
	if err != nil {
		return fmt.Sprintf("Erro Conexão: %v", err)
	}

	return "Conectado"
}

func (a *App) Disconnect() string {
	a.engine.Transport().Disconnect()
	return "Desconectado"
}

func (a *App) SendCtrlAltDel() {
	kvm.LogDebug("App: Chamando SendCtrlAltDel")
	a.engine.SendCtrlAltDel()
}

func (a *App) ChangeLayout(layout int) {
	a.engine.SetLayout(layout)
}

func (a *App) SetPosition(pos int) {
	a.engine.SetPosition(pos)
}

func (a *App) HandleScroll(delta int) {
	a.engine.HandleManualScroll(delta)
}