/*
 * The nopaque object is used as a namespace for nopaque specific functions and
 * variables.
 */
var nopaque = {};

// nopaque ressources
nopaque.socket = undefined;

nopaque.corpora = undefined;
nopaque.corporaSubscribers = [];
nopaque.jobs = undefined;
nopaque.jobsSubscribers = [];

nopaque.foreignCorpora = undefined;
nopaque.foreignCorporaSubscribers = [];
nopaque.foreignJobs = undefined;
nopaque.foreignJobsSubscribers = [];

nopaque.user = {};
nopaque.user.isAuthenticated = undefined;
nopaque.user.settings = {}
nopaque.user.settings.darkMode = undefined;

nopaque.flashedMessages = undefined;

// nopaque functions
nopaque.socket = {};
nopaque.socket.init = function() {
  nopaque.socket = io({transports: ['websocket']});
  // Add event handlers
  nopaque.socket.on("user_data_stream_init", function(msg) {
    nopaque.user = JSON.parse(msg);
    for (let subscriber of nopaque.corporaSubscribers) {subscriber._init(nopaque.user.corpora);}
    for (let subscriber of nopaque.jobsSubscribers) {subscriber._init(nopaque.user.jobs);}
  });

  nopaque.socket.on("user_data_stream_update", function(msg) {
    var patch;

    patch = JSON.parse(msg);
    nopaque.user = jsonpatch.apply_patch(nopaque.user, patch);
    corpora_patch = patch.filter(operation => operation.path.startsWith("/corpora"));
    jobs_patch = patch.filter(operation => operation.path.startsWith("/jobs"));
    for (let subscriber of nopaque.corporaSubscribers) {subscriber._update(corpora_patch);}
    for (let subscriber of nopaque.jobsSubscribers) {subscriber._update(jobs_patch);}
    if (["all", "end"].includes(nopaque.user.settings.job_status_site_notifications)) {
      for (operation of jobs_patch) {
        /* "/jobs/{jobId}/..." -> ["{jobId}", ...] */
        pathArray = operation.path.split("/").slice(2);
        if (operation.op === "replace" && pathArray[1] === "status") {
          if (nopaque.user.settings.job_status_site_notifications === "end" && !["complete", "failed"].includes(operation.value)) {continue;}
          nopaque.flash(`[<a href="/jobs/${pathArray[0]}">${nopaque.user.jobs[pathArray[0]].title}</a>] New status: ${operation.value}`, "job");
        }
      }
    }
  });

  nopaque.socket.on("foreign_user_data_stream_init", function(msg) {
    nopaque.foreignUser = JSON.parse(msg);
    for (let subscriber of nopaque.foreignCorporaSubscribers) {subscriber._init(nopaque.foreignUser.corpora);}
    for (let subscriber of nopaque.foreignJobsSubscribers) {subscriber._init(nopaque.foreignUser.jobs);}
  });

  nopaque.socket.on("foreign_user_data_stream_update", function(msg) {
    var patch;

    patch = JSON.parse(msg);
    nopaque.foreignUser = jsonpatch.apply_patch(nopaque.foreignUser, patch);
    corpora_patch = patch.filter(operation => operation.path.startsWith("/corpora"));
    jobs_patch = patch.filter(operation => operation.path.startsWith("/jobs"));
    for (let subscriber of nopaque.foreignCorporaSubscribers) {subscriber._update(corpora_patch);}
    for (let subscriber of nopaque.foreignJobsSubscribers) {subscriber._update(jobs_patch);}
  });
}

nopaque.Forms = {};
nopaque.Forms.init = function() {
  var abortRequestElement, parentElement, progressElement, progressModal,
      progressModalElement, request, submitElement;

  for (let form of document.querySelectorAll(".nopaque-submit-form")) {
    submitElement = form.querySelector('button[type="submit"]');
    submitElement.addEventListener("click", function() {
      for (let selectElement of form.querySelectorAll('select')) {
        if (selectElement.value === "") {
          parentElement = selectElement.closest(".input-field");
          parentElement.querySelector(".select-dropdown").classList.add("invalid");
          for (let helperTextElement of parentElement.querySelectorAll(".helper-text")) {
            helperTextElement.remove();
          }
          parentElement.insertAdjacentHTML("beforeend", `<span class="helper-text red-text">Please select an option.</span>`);
        }
      }
    });

    request = new XMLHttpRequest();
    if (form.dataset.hasOwnProperty("progressModal")) {
      progressModalElement = document.getElementById(form.dataset.progressModal);
      progressModal = M.Modal.getInstance(progressModalElement);
      progressModal.options.dismissible = false;
      abortRequestElement = progressModalElement.querySelector(".abort-request");
      abortRequestElement.addEventListener("click", function() {request.abort();});
      progressElement = progressModalElement.querySelector(".determinate");
    }
    form.addEventListener("submit", function(event) {
      event.preventDefault();
      var formData;

      formData = new FormData(form);
      // Initialize progress modal
      if (progressModalElement) {
        progressElement.style.width = "0%";
        progressModal.open();
      }
      request.open("POST", window.location.href);
      request.send(formData);
    });
    request.addEventListener("load", function(event) {
      var fieldElement;

      if (request.status === 201) {
        window.location.href = JSON.parse(this.responseText).redirect_url;
      }
      if (request.status === 400) {
        console.log(request);
        for (let [field, errors] of Object.entries(JSON.parse(this.responseText))) {
          fieldElement = form.querySelector(`input[name$="${field}"]`).closest(".input-field");
          for (let error of errors) {
            fieldElement.insertAdjacentHTML("beforeend", `<span class="helper-text red-text">${error}</span>`);
          }
        }
        if (progressModalElement) {
          progressModal.close();
        }
      }
      if (request.status === 500) {
        location.reload();
      }
    });
    if (progressModalElement) {
      request.upload.addEventListener("progress", function(event) {
        progressElement.style.width = Math.floor(100 * event.loaded / event.total).toString() + "%";
      });
    }
  }
}

nopaque.Navigation = {};
nopaque.Navigation.init = function() {
  /* ### Initialize sidenav-main ### */
  for (let entry of document.querySelectorAll("#sidenav-main a")) {
    if (entry.href === window.location.href) {
      entry.parentNode.classList.add("active");
    }
  }
}


nopaque.flash = function() {
  var classes, toast, toastActionElement;

  switch (arguments.length) {
    case 1:
      category = "message";
      message = arguments[0];
      break;
    case 2:
      message = arguments[0];
      category = arguments[1];
      break;
    default:
      console.error("Usage: nopaque.flash(message) or nopaque.flash(message, category)")
  }

  switch (category) {
    case "corpus":
      message = `<i class="left material-icons">book</i>${message}`;
      break;
    case "error":
      message = `<i class="left material-icons red-text">error</i>${message}`;
      break;
    case "job":
      message = `<i class="left material-icons">work</i>${message}`;
      break;
    default:
      message = `<i class="left material-icons">notifications</i>${message}`;
  }

  toast = M.toast({html: `<span>${message}</span>
                          <button data-action="close" class="btn-flat toast-action white-text">
                            <i class="material-icons">close</i>
                          </button>`});
  toastActionElement = toast.el.querySelector('.toast-action[data-action="close"]');
  if (toastActionElement) {
    toastActionElement.addEventListener("click", function() {
      toast.dismiss();
    });
  }
}


document.addEventListener("DOMContentLoaded", function() {
  // Disable all option elements with no value
  for (let optionElement of document.querySelectorAll('option[value=""]')) {
    optionElement.disabled = true;
  }
  M.AutoInit();
  M.CharacterCounter.init(document.querySelectorAll('input[data-length][type="text"]'));
  M.Dropdown.init(document.querySelectorAll("#nav-notifications, #nav-account"),
                  {alignment: "right", constrainWidth: false, coverTrigger: false});
  nopaque.Forms.init();
  nopaque.Navigation.init();
  while (nopaque.flashedMessages.length) {
    flashedMessage = nopaque.flashedMessages.shift();
    nopaque.flash(flashedMessage[1], flashedMessage[0]);
  }
  nopaque.socket.init();
  nopaque.socket.emit("user_data_stream_init");
});