// Metro module 456 (f457).
import _classCallCheck from "./_classCallCheck";
import _createClass from "./_createClass";
import Module457 from "./Module457";
import NativeEventEmitter from "./NativeEventEmitter";
import _default from "./_default_459";
let env462 = {};
const AppStateImpl = function AppStateImpl() {
  let c23784_0, c23784_1;
  _classCallCheck(this, AppStateImpl);
  this.currentState = null;
  if (Module457 == null) {
    this.isAvailable = false;
  } else {
    this.isAvailable = true;
    const nativeEventEmitter = new NativeEventEmitter(null);
    c23784_1 = nativeEventEmitter;
    this._emitter = nativeEventEmitter;
    this.currentState = Module457.getConstants().initialAppState;
    c23784_0 = false;
    nativeEventEmitter.addListener("appStateDidChange", (a0) => {
      c23784_0 = true;
      this.currentState = a0.app_state;
    });
    Module457.getCurrentAppState((a0) => {
      if (!(c23784_0 || this.currentState === a0.app_state)) {
        this.currentState = a0.app_state;
        c23784_1.emit("appStateDidChange", a0);
      }
    }, _default);
  }
};
export default new (_createClass(AppStateImpl, [{
  key: "addEventListener",
  value: function(a0, a1) {
    let c23785_1, c23785_2;
    let c23785_0 = a0;
    const _emitter = this._emitter;
    if (_emitter == null) {
      throw new Error("Cannot use AppState when `isAvailable` is false.");
    }
    if (a0 === "change") {
      c23785_1 = a1;
      return _emitter.addListener("appStateDidChange", (a0) => {
        c23785_1(a0.app_state);
      });
    }
    if (a0 === "memoryWarning") {
      return _emitter.addListener("memoryWarning", a1);
    }
    if (a0 !== "blur" && a0 !== "focus") {
      throw new Error("Trying to subscribe to unknown event: " + a0);
    }
    c23785_2 = a1;
    return _emitter.addListener("appStateFocusChange", (a0) => {
      if (!(c23785_0 !== "blur" || a0)) {
        c23785_2();
      }
      if (c23785_0 === "focus" && a0) {
        c23785_2();
      }
    });
  }
}]))();