frappe.ready(() => {
  setup_socket_io();

  set_docname_if_missing();

  expand_first_discussion();

  $(".search-field").keyup((e) => {
    search_topic(e);
  });

  $(".reply").click((e) => {
    show_new_topic_modal(e);
  });

  $("#login-from-discussion").click((e) => {
    login_from_discussion(e);
  });

  $(".sidebar-topic").click((e) => {
    if ($(e.currentTarget).attr("aria-expanded") == "true") {
      e.stopPropagation();
    }
  });

  $(document).on("click", ".submit-discussion", (e) => {
    submit_discussion(e);
  });
})

var show_new_topic_modal = (e) => {
  e.preventDefault();
  $("#discussion-modal").modal("show");
  var topic = $(e.currentTarget).attr("data-topic");
  $(".modal-headings").text(topic ? "Reply" : "Start a Discussion");
  topic ? $(".topic-title").addClass("hide") : $(".topic-title").removeClass("hide");
  $("#submit-discussion").attr("data-topic", topic ? topic : "");
}

var setup_socket_io = () => {
  const assets = [
    "/assets/frappe/js/lib/socket.io.min.js",
    "/assets/frappe/js/frappe/socketio_client.js",
  ]

  frappe.require(assets, () => {
    if (window.dev_server) {
      frappe.boot.socketio_port = "9000";
    }
    frappe.socketio.init(9000);
    frappe.socketio.socket.on("publish_message", (data) => {
      publish_message(data);
    })
  })
}

var publish_message = (data) => {
  post_message_cleanup();

  if ($(`.discussion-on-page[data-topic=${data.topic_info.name}]`).length) {
    if ($(`.discussion-on-page[data-topic=${data.topic_info.name}] .card-divider-dark`).length) {
      $(data.template).insertAfter(`.discussion-on-page[data-topic=${data.topic_info.name}] .card-divider-dark`);
    }
    else {

      $('<div class="card-divider-dark mb-10"></div>' + data.template).insertAfter(`.discussion-on-page[data-topic=${data.topic_info.name}] .discussion-form`);
    }
  }
  else if ((decodeURIComponent($(".discussions-parent .course-content-parent").attr("data-doctype")) == data.topic_info.reference_doctype
    && decodeURIComponent($(".discussions-parent .course-content-parent").attr("data-docname")) == data.topic_info.reference_docname)) {
    $(data.sidebar).insertAfter(`.discussions-sidebar .form-group`);
    $(`#discussion-group`).prepend(data.new_topic_template);

    if (data.topic_info.owner == frappe.session.user) {
      $(".discussion-on-page").collapse();
      $(".sidebar-topic").first().click();
    }

  }
  else {
    window.location.reload();
  }

  update_reply_count(data.topic_info.name);
}

var post_message_cleanup = () => {
  $(".comment-field").val("");
  $("#discussion-modal").modal("hide");
  $("#no-discussions").addClass("hide");
}

var update_reply_count = (topic) => {
  var reply_count = $(`[data-target='#t${topic}']`).find(".reply-count").text();
  reply_count = parseInt(reply_count) + 1;
  $(`[data-target='#t${topic}']`).find(".reply-count").text(reply_count);
}

var set_docname_if_missing = () => {
  if ($("[data-docname='None']").length) {
    frappe.call({
      method: "community.community.doctype.discussion_topic.discussion_topic.get_docname",
      args: {
        "route": window.location.href.split("/").slice(-1)[0]
      },
      callback: (data) => {
        $("[data-docname='None']").attr("data-docname", data.message);
      }
    })
  }
}

var expand_first_discussion = () => {
  $($(".discussions-parent .collapse")[0]).addClass("show");
  $($(".discussions-sidebar [data-toggle='collapse']")[0]).attr("aria-expanded", true);
}

var search_topic = (e) => {
  var input = $(e.currentTarget).val();

  var topics = $(".discussions-parent .discussion-topic-title");
  if (input.length < 3 || input.trim() == "") {
    topics.closest(".sidebar-parent").removeClass("hide");
    return
  }

  topics.each((i, elem) => {
    var topic_id = $(elem).parent().attr("data-target");

    /* Check match in replies */
    var match_in_reply = false;
    var replies = $(`${topic_id}`);
    for (var reply of replies.find(".reply-text")) {
      if (has_common_substring($(reply).text(), input)) {
        match_in_reply = true;
        break;
      }
    }

    /* Match found in title or replies, then show */
    if (has_common_substring($(elem).text(), input) || match_in_reply) {
      $(elem).closest(".sidebar-parent").removeClass("hide")
    }
    else {
      $(elem).closest(".sidebar-parent").addClass("hide");
    }

  })
}

var has_common_substring = (str1, str2) => {
  var str1_arr = str1.toLowerCase().split(" ");
  var str2_arr = str2.toLowerCase().split(" ");

  var substring_found = false;
  for (var first_word of str1_arr) {
    for (var second_word of str2_arr) {
      if (first_word.indexOf(second_word) > -1) {
        substring_found = true;
        break;
      }
    }
  }
  return substring_found;
}

var submit_discussion = (e) => {
  e.preventDefault();
  e.stopImmediatePropagation();

  var title = $(".topic-title:visible").length ? $(".topic-title:visible").val().trim() : "";
  var reply = $(".comment-field:visible").val().trim();

  if (reply) {
    var doctype = $(e.currentTarget).attr("data-doctype");
    doctype = doctype ? decodeURIComponent(doctype) : doctype;

    var docname = $(e.currentTarget).attr("data-docname");
    docname = docname ? decodeURIComponent(docname) : docname;

    frappe.call({
      method: "community.community.doctype.discussion_topic.discussion_topic.submit_discussion",
      args: {
        "doctype": doctype ? doctype : "",
        "docname": docname ? docname : "",
        "reply": reply,
        "title": title,
        "topic_name": $(e.currentTarget).closest(".discussion-on-page").attr("data-topic")
      }
    })

  }
}

var login_from_discussion = (e) => {
  var redirect = $(e.currentTarget).attr("data-redirect") || window.location.href;
  window.location.href = `/login?redirect-to=${redirect}`;
}