/**
 * TODO: refactor file
 */
let timeout: number | null = null;

const playSoundbite = (
  audioPlayer: HTMLAudioElement,
  startTime: number,
  duration: number
): void => {
  audioPlayer.currentTime = startTime;
  if (duration > 0) {
    audioPlayer.play();
    if (timeout) {
      clearTimeout(timeout);
      timeout = null;
    }
    timeout = window.setTimeout(() => {
      audioPlayer.pause();
      timeout = null;
    }, duration * 1000);
  }
};

const Soundbites = (): void => {
  const audioPlayer: HTMLAudioElement | null = document.querySelector("audio");

  if (audioPlayer) {
    const soundbiteButton: HTMLButtonElement | null = document.querySelector(
      "button[data-type='get-soundbite']"
    );
    if (soundbiteButton) {
      const startTimeField: HTMLInputElement | null = document.querySelector(
        `input[name="${soundbiteButton.dataset.startTimeFieldName}"]`
      );
      const durationField: HTMLInputElement | null = document.querySelector(
        `input[name="${soundbiteButton.dataset.durationFieldName}"]`
      );

      if (startTimeField && durationField) {
        soundbiteButton.addEventListener("click", () => {
          if (startTimeField.value === "") {
            startTimeField.value = (
              Math.round(audioPlayer.currentTime * 100) / 100
            ).toString();
          } else {
            durationField.value = (
              Math.round(
                (audioPlayer.currentTime - Number(startTimeField.value)) * 100
              ) / 100
            ).toString();
          }
        });
      }
    }

    const soundbitePlayButtons: NodeListOf<HTMLButtonElement> | null = document.querySelectorAll(
      "button[data-type='play-soundbite']"
    );
    if (soundbitePlayButtons) {
      for (let i = 0; i < soundbitePlayButtons.length; i++) {
        const soundbitePlayButton: HTMLButtonElement = soundbitePlayButtons[i];
        soundbitePlayButton.addEventListener("click", () => {
          playSoundbite(
            audioPlayer,
            Number(soundbitePlayButton.dataset.soundbiteStartTime),
            Number(soundbitePlayButton.dataset.soundbiteDuration)
          );
        });
      }
    }

    const inputFields: NodeListOf<HTMLInputElement> | null = document.querySelectorAll(
      "input[data-type='soundbite-field']"
    );
    if (inputFields) {
      for (let i = 0; i < inputFields.length; i++) {
        const inputField: HTMLInputElement = inputFields[i];
        const soundbitePlayButton: HTMLButtonElement | null = document.querySelector(
          `button[data-type="play-soundbite"][data-soundbite-id="${inputField.dataset.soundbiteId}"]`
        );
        if (soundbitePlayButton) {
          if (inputField.dataset.fieldType == "start-time") {
            inputField.addEventListener("input", () => {
              soundbitePlayButton.dataset.soundbiteStartTime = inputField.value;
            });
          } else if (inputField.dataset.fieldType == "duration") {
            inputField.addEventListener("input", () => {
              soundbitePlayButton.dataset.soundbiteDuration = inputField.value;
            });
          }
        }
      }
    }
  }
};

export default Soundbites;