export default class Input {
  constructor() {
    this.keysToInputs = {
      ArrowUp: "up",
      ArrowDown: "down",
      ArrowLeft: "left",
      ArrowRight: "right",
      x: "attack",
      z: "interact"
    }

    this.inputsToKeys = Object.fromEntries(Object.keys(this.keysToInputs).map(key => [this.keysToInputs[key], key]))

    this.inputPressed = Object.fromEntries(Object.keys(this.inputsToKeys).map(key => [key, false]))
  }

  initialize() {
    window.addEventListener("keydown", key => this.inputPressed[this.keyFromInput(key.key)] = true)
    window.addEventListener("keyup", key => this.inputPressed[this.keyFromInput(key.key)] = false)
    return this
  }

  isInputPressed(inputName) {
    return !!this.inputPressed[inputName]
  }

  keyFromInput(input) {
    return this.keysToInputs[input]
  }
}