import "../scss/frontend.scss";
import "../css/userarea.css";

import { getCategoryMedia, getCookie, getElementById } from "./api";

import { Tab } from "bootstrap";
import DataTable from "datatables.net-dt";

let mediaTable = new DataTable("#mediaTable");
let scenesTable = new DataTable("#scenesTable");
let permissionsTable = new DataTable("#permissionsTable");

/* Uploads */

document.querySelectorAll(".drop-zone__input").forEach((inputElement) => {
  const dropZoneElement = inputElement.closest(".drop-zone");

  dropZoneElement.addEventListener("click", (e) => {
    inputElement.click();
  });

  dropZoneElement.addEventListener("dragover", (e) => {
    e.preventDefault();
    dropZoneElement.classList.add("drop-zone--over");
  });

  ["dragleave", "dragend", "drop"].forEach((type) => {
    dropZoneElement.addEventListener(type, (e) => {
      dropZoneElement.classList.remove("drop-zone--over");
    });
  });

  dropZoneElement.addEventListener("drop", (e) => {
    e.preventDefault();
    if (e.dataTransfer.files.length) {
      inputElement.files = e.dataTransfer.files;
      handleFiles(inputElement.files);
    }
  });

  inputElement.addEventListener("change", (e) => {
    if (inputElement.files.length) {
      handleFiles(inputElement.files);
    }
  });
});

function handleFiles(files) {
  const uploadStatus = document.getElementById("uploadStatus");

  Array.from(files).forEach((file) => {
    const fileRow = document.createElement("div");
    fileRow.classList.add(
      "row",
      "align-items-center",
      "mb-2",
      "file-upload-wrapper"
    );

    const thumbnailCol = document.createElement("div");
    thumbnailCol.classList.add("col-2");
    const thumbnail = document.createElement("img");
    thumbnail.classList.add("img-fluid", "thumbnail");
    thumbnail.src = ""; // TODO: Add a loading spinner or something here
    thumbnailCol.appendChild(thumbnail);

    const fileNameCol = document.createElement("div");
    fileNameCol.classList.add("col-7");
    const fileName = document.createElement("span");
    fileName.classList.add("file-name");
    fileName.textContent = file.name;
    fileNameCol.appendChild(fileName);

    const progressCol = document.createElement("div");
    progressCol.classList.add("col-3");
    const progressBar = document.createElement("div");
    progressBar.classList.add("progress");
    const progressBarInner = document.createElement("div");
    progressBarInner.classList.add("progress-bar");
    progressBarInner.setAttribute("role", "progressbar");
    progressBarInner.setAttribute("aria-valuemin", "0");
    progressBarInner.setAttribute("aria-valuemax", "100");
    progressBarInner.style.width = "0%";
    progressBar.appendChild(progressBarInner);
    progressCol.appendChild(progressBar);

    fileRow.appendChild(thumbnailCol);
    fileRow.appendChild(fileNameCol);
    fileRow.appendChild(progressCol);

    uploadStatus.prepend(fileRow);

    uploadFile(file, progressBarInner, thumbnail);
  });
}

function uploadFile(file, progressBar, thumbnail) {
  const xhr = new XMLHttpRequest();
  const formData = new FormData();

  formData.append("file", file);
  formData.append("csrfmiddlewaretoken", getCookie("csrftoken"));

  if (file.type.startsWith("image")) {
    formData.append("media_type", "image");
  } else if (file.type.startsWith("video")) {
    formData.append("media_type", "video");
  } else {
    formData.append("media_type", "other");
  }

  formData.append("title", file.name);

  xhr.upload.addEventListener("progress", (e) => {
    if (e.lengthComputable) {
      if (e.loaded == e.total) {
        progressBar.style.width = "100%";
        progressBar.textContent = "Processing...";
      } else {
        const percentComplete = (e.loaded / e.total) * 100;
        progressBar.style.width = `${percentComplete}%`;
        progressBar.textContent = `${Math.round(percentComplete)}%`;
      }
    }
  });

  xhr.open("POST", document.location.href, true);

  xhr.onload = () => {
    if (xhr.status === 201) {
      const response = JSON.parse(xhr.responseText);
      progressBar.textContent = "Converting...";

      let thumbnailCheck = setInterval(() => {
        getCategoryMedia(response.category, response.id).then((media) => {
          if (media.obj.resolutions.length > 0) {
            clearInterval(thumbnailCheck);
            thumbnail.src = media.obj.resolutions[0].file;

            progressBar.classList.add("bg-success");
            progressBar.textContent = "Done!";
          }
        });
      }, 2000);
    } else {
      progressBar.classList.add("bg-danger");
      progressBar.textContent = "Error!";
    }
  };
  xhr.send(formData);
}