#pragma once

// The firmware side of running a Lua app: the panel, the touch controller and
// the frame pacing. The lua_State, the bindings, the node tree, app loading and
// navigation history all belong to esp32lua::Runtime, and everything the user
// sees -- chrome included -- is built by /.lua/main.lua.

#include <TFT_eSPI.h>
#include <XPT2046_Touchscreen.h>
#include <lua/runtime.h>

#include "providers.h"

class LuaHost {
public:
  LuaHost(TFT_eSPI& tft, XPT2046_Touchscreen& touch);

  // Starts the launcher, or reports the failure that stopped it.
  bool begin();
  void loop();
  bool running() const { return runtime.hasApp(); }

  // Called by the providers, which is why they hold a reference to the host.
  void applyRotation();
  void mapTouch(const TS_Point& point, int16_t& x, int16_t& y) const;

private:
  static constexpr uint32_t DRAW_INTERVAL_MS = 33;
  static constexpr int16_t PANEL_W = 320;
  static constexpr int16_t PANEL_H = 480;
  static constexpr int16_t MOVE_EPSILON_PX = 2;

  esp32lua::Providers wire();
  // Every app starts the same way, whether it is the launcher at boot or a
  // route the running app asked for.
  void prepareForApp();
  void settleNewApp();
  void navigate();
  void pollTouch();
  void pollTimers();
  void fail(const char* message);

  TFT_eSPI& tft;
  XPT2046_Touchscreen& touchPanel;

  slate::Log logProvider;
  slate::Sys sysProvider;
  slate::Fs fsProvider;
  slate::Gui guiProvider;
  slate::Http httpProvider;
  slate::Timer timerProvider;
  slate::Wifi wifiProvider;
  slate::Ble bleProvider;
  slate::Touch touchProvider;
  esp32lua::Runtime runtime;

  uint32_t nextDrawMs = 0;
  uint32_t lastDrawMs = 0;
  bool lastTouched = false;
  bool ignoreRelease = false;
  int16_t lastX = 0, lastY = 0;
  int16_t movedX = 0, movedY = 0;
};