import { useRouter } from "next/router";
import { FaPlus, FaExternalLinkAlt, FaLink } from "react-icons/fa";
import { IoPulseOutline, IoRemoveOutline, IoTimer } from "react-icons/io5";
import { MdScreenShare } from "react-icons/md";
import { BsThreeDots } from "react-icons/bs";
import { useTeamDashboardContext } from "../../contexts/teamDashboardContext";
import { User, UserStatus } from "../../models/user";
import { useEffect, useState } from "react";
import { toast } from "react-hot-toast";
import { TeamMemberRole, TeamMemberStatus } from "../../models/teamMember";
import UserService from "../../services/userService";
import {
  doc,
  DocumentSnapshot,
  getFirestore,
  onSnapshot,
  Unsubscribe,
} from "firebase/firestore";
import { Collections } from "../../services/collections";
import { KeyCode } from "../../globals/keycode";
import { Tooltip } from "antd";

const userService = new UserService();
const db = getFirestore();

function statusBubble(status: UserStatus) {
  switch (status) {
    case UserStatus.online:
      return (
        <span className="absolute top-0 right-0 w-3 h-3 bg-green-400 rounded-full"></span>
      );
    case UserStatus.busy:
      return (
        <span className="absolute top-0 right-0 w-3 h-3 bg-orange-400 rounded-full"></span>
      );
    case UserStatus.offline:
      return (
        <span className="absolute top-0 right-0 w-3 h-3 bg-gray-400 rounded-full"></span>
      );
    default:
      return (
        <span className="absolute top-0 right-0 w-3 h-3 bg-gray-400 rounded-full"></span>
      );
  }
}

function renderPulse(status: UserStatus) {
  switch (status) {
    case UserStatus.online:
      return (
        <IoPulseOutline className="text-green-500 text-2xl animate-pulse mx-2 ml-auto" />
      );
    case UserStatus.busy:
      return (
        <IoPulseOutline className="text-orange-400 text-2xl animate-pulse mx-2 ml-auto" />
      );
    case UserStatus.offline:
      return (
        <IoRemoveOutline className="text-gray-400 text-2xl mx-2 ml-auto" />
      );
    default:
      return (
        <IoPulseOutline className="text-gray-400 text-2xl animate-pulse mx-2 ml-auto" />
      );
  }
}

const maxNumberOfKeyboardMappings: number = 9;

const shortcutMappings = new Map(); // keycode number to the user id

export default function TeamVoiceLine() {
  const router = useRouter();
  const { teamid } = router.query;
  const { team, user, userTeamMember, teamMembers } = useTeamDashboardContext();
  const [loading, setLoading] = useState<Boolean>(true);

  const [teamUsers, setTeamUsers] = useState<User[]>([]);
  const [count, setCount] = useState<number>(0);

  useEffect(() => {
    const unsubs: Unsubscribe[] = [];

    (async function () {
      try {
        // listeners for all teammates' status
        if (teamMembers) {
          teamMembers.map((tmember) => {
            if (tmember.status == TeamMemberStatus.activated) {
              const docRef = doc(db, Collections.users, tmember.userId);

              const unsub = onSnapshot(docRef, (doc) => {
                const updatedteamMateUser = doc.data() as User;

                setTeamUsers((prevTeamUsers) => {
                  const newTeamUsers = prevTeamUsers.filter(
                    (tm) => tm.id != updatedteamMateUser.id
                  );
                  newTeamUsers.push(updatedteamMateUser);

                  return newTeamUsers;
                });
              });

              unsubs.push(unsub);
            }

            return;
          });

          document.addEventListener("keydown", handleKeyboardShortcut);
          document.addEventListener("keyup", handleKeyUp);
        }
      } catch (error) {
        console.log(error);
        toast.error("Something went wrong");
        router.push("/teams/landing");
      }

      setLoading(false);
    })();

    return () => {
      unsubs.map((listener) => listener());

      document.removeEventListener("keydown", handleKeyboardShortcut);
      document.removeEventListener("keyup", handleKeyUp);
    };
  }, []);

  async function handleAdminRoute() {
    if (userTeamMember.role == TeamMemberRole.admin) {
      router.push("/teams/" + teamid + "/admin");
      return;
    }

    toast.error("You are not a team admin!");
  }

  // SECTION: set up for shortcuts and recording and such
  const [selectedTeammate, setSelectedTeammate] = useState<string>(); // id of selected teammate
  const [isRecording, setIsRecording] = useState<Boolean>(false);

  teamUsers.forEach((tmUser, i) => {
    // make sure we don't map a user if they are past the max allowed
    if (i < maxNumberOfKeyboardMappings) {
      let shortcut: number = i + 49; // 49 is what number 1 is on the keyboard
      shortcutMappings.set(shortcut, tmUser.id);
    }
  });

  useEffect(() => {
    // todo move all variable stuff like shortcut mappings here
  }, [teamUsers]);

  function handleKeyUp(event) {
    console.log("on key up");

    // if was recording and released R, then stop recording
    if (event.keyCode == KeyCode.R) {
      console.log("stopped recording");
      setIsRecording(false);
      setSelectedTeammate(null);
    }
  }

  function handleKeyboardShortcut(event) {
    if (event.repeat) {
      return;
    }

    console.log(event.keyCode);

    // recording
    if (event.keyCode == KeyCode.R) {
      console.log("started recording");
      setIsRecording(true);
    }
    // if we have a valid user for such a shortcut, then go ahead...otherwise
    else if (shortcutMappings.has(event.keyCode)) {
      setSelectedTeammate(shortcutMappings.get(event.keyCode));
    } else if (event.keyCode == KeyCode.Escape) {
      setSelectedTeammate(null);
    } else {
      toast("Invalid teammate selection.");
    }

    // todo if we press the same shortcut twice, deactive selected user
  }

  function renderTeamMemberList() {
    // show loading skeleton if not yet got friend info
    if (loading) {
      return (
        <div className="w-full h-24 flex animate-pulse flex-row items-center justify-center space-x-5">
          <div className="w-12 bg-gray-300 h-12 rounded-full "></div>
          <div className="flex flex-col space-y-3">
            <div className="w-60 bg-gray-300 h-6 rounded-md "></div>
            <div className="w-40 bg-gray-300 h-6 rounded-md "></div>
          </div>
        </div>
      );
    }

    // if not teammates, stale state message to tell admin to add people
    if (!teamUsers.length) {
      return <span className="text-gray-300">Please add team members.</span>;
    }

    return teamUsers.map((tmember, i) => {
      return (
        <span
          onClick={() => setSelectedTeammate(tmember.id)}
          key={i}
          className={`rounded flex flex-row items-center py-2 px-2 justify-items-start ease-in-out duration-300 hover:cursor-pointer ${
            tmember.id == selectedTeammate ? "bg-white scale-150" : ""
          }`}
        >
          <span className="relative flex mr-2">
            <span className="bg-gray-200 bg-opacity-30 rounded-full shadow-md absolute w-full h-full"></span>

            {statusBubble(tmember.userStatus)}

            <img
              src={tmember.avatarUrl}
              alt="asdf"
              className="rounded-full w-12"
            />
          </span>

          <span className="flex flex-col mr-10">
            {tmember.id == selectedTeammate ? (
              <>
                <span className="flex flex-row items-center space-x-2">
                  <span className="text-sm text-black font-bold">
                    {tmember.nickName}
                  </span>
                </span>

                <span className={"text-xs span-sans text-gray-500"}>
                  {tmember.teamRole}
                </span>
              </>
            ) : (
              <>
                <span className="flex flex-row items-center space-x-2">
                  <span className="text-sm text-white font-bold">
                    {tmember.nickName}
                  </span>
                </span>

                <span className={"text-xs span-sans text-gray-300"}>
                  {tmember.teamRole}
                </span>
              </>
            )}
          </span>

          {tmember.id == selectedTeammate ? (
            <>
              <Tooltip title="send link">
                <button className="ml-auto bg-gray-400 bg-opacity-80 p-2 rounded hover:bg-opacity-100">
                  <FaLink className="text-sm text-white" />
                </button>
              </Tooltip>

              <Tooltip title="send video recording">
                <button className="ml-2 bg-gray-400 bg-opacity-80 p-2 rounded hover:bg-opacity-100">
                  <MdScreenShare className="text-sm text-white" />
                </button>
              </Tooltip>

              <Tooltip title="press and hold R to send audio message">
                {isRecording ? (
                  <button className="ml-2 w-10 h-10 border-orange-400 bg-orange-400 border-2 bg-opacity-80 p-2 rounded hover:bg-opacity-100">
                    <span className="text-sm text-white font-bold">R</span>
                  </button>
                ) : (
                  <button className="ml-2 w-10 h-10 border-orange-400 border-2 bg-opacity-80 p-2 rounded hover:bg-opacity-100">
                    <span className="text-sm text-orange-500 font-bold">R</span>
                  </button>
                )}
              </Tooltip>

              <BsThreeDots className="text-black ml-2 hover:cursor-pointer" />
            </>
          ) : (
            <>{renderPulse(tmember.userStatus)}</>
          )}
        </span>
      );
    });
  }

  return (
    <section className="p-5 flex flex-col w-full max-w-sm bg-gray-100 bg-opacity-25 rounded-lg shadow-md">
      <span className="flex flex-row justify-start items-center pb-5">
        <span className="flex flex-col">
          <span className="text-white">TEAM</span>
        </span>

        <button
          onClick={handleAdminRoute}
          className="bg-gray-300 bg-opacity-25 p-2 ml-auto rounded hover:bg-opacity-40"
        >
          <FaPlus className="text-lg text-white" />
        </button>
      </span>
      {/* list of team members */}
      {renderTeamMemberList()}
    </section>
  );
}