import {
  Badge,
  Button,
  Input,
  Popconfirm,
  Popover,
  Space,
  Table,
  Tooltip,
  Typography,
  notification,
} from "antd";
import { useTranslation } from "react-i18next";
import { useEffect, useRef, useState } from "react";
import {
  Constants,
  FormatDatetime,
  hasOnePermission,
  hasPermission,
  myFetch,
  myFetchContentType,
} from "../../../utils";
import MyPagination from "../../../Components/MyPagination";
import { Link } from "react-router-dom";
import {
  FileTextOutlined,
  LoadingOutlined,
  PlusOutlined,
} from "@ant-design/icons";
import { MyCopyIcon, MyShowHiddenIcon } from "../../../Components/MyIcon";
import { useAppContext } from "../../../Contexts/AppContext";

const ReceivedSSECommands = {
  UpdateRobotStatus: 1,
  AddUnauthorizedRobot: 2,
  AddRobot: 3,
  RemoveUnauthorizedRobot: 4,
  RemoveRobot: 5,
  RobotUpdated: 6,
  UpdateRobotCurrentJob: 7,
  UpdateRobotJobsWaitingCount: 8,
  PermitJoinUpdated: 9,
};

function getRobotTypeString(type) {
  switch (type) {
    case 1:
      return "Rex";
    case 2:
      return "Yeet";
    default:
      return "Unknown";
  }
}

export default function Robots() {
  const { t } = useTranslation();
  const appContext = useAppContext();
  const [notificationApi, notificationContextHolder] =
    notification.useNotification();

  const [robots, setRobots] = useState([]);
  const [robotsTotalPages, setRobotsTotalPages] = useState(0);
  const [robotsPaginationPage, setRobotsPaginationPage] = useState(1);
  const robotsPaginationPageRef = useRef(1);

  const [unauthorizedRobots, setUnauthorizedRobots] = useState([]);
  const [unauthorizedRobotsTotalPages, setUnauthorizedRobotsTotalPages] =
    useState(0);
  const [
    unauthorizedRobotsPaginationPage,
    setUnauthorizedRobotsPaginationPage,
  ] = useState(1);
  const unauthorizedRobotsPaginationPageRef = useRef(1);

  const [selectedRobotName, setSelectedRobotName] = useState("");
  const [permitJoinEnabled, setPermitJoinEnabled] = useState(false);
  const [showAddress, setShowAddress] = useState(false);

  const sseEventSource = useRef(null);

  const getRobotStatusBadge = (status) => {
    switch (status) {
      case 1:
        return (
          <Badge status="success" text={t("robotics.robots.status.idle")} />
        );
      case 2:
        return (
          <Badge
            status="processing"
            text={t("robotics.robots.status.processing")}
          />
        );
      case 3:
        return (
          <Badge
            status="warning"
            text={t("robotics.robots.status.connecting")}
          />
        );
      case 4:
        return (
          <Badge status="warning" text={t("robotics.robots.status.error")} />
        );
      case 5:
        return (
          <Badge status="default" text={t("robotics.robots.status.offline")} />
        );
      default:
        return "Unknown";
    }
  };

  const getRobotsTableContent = () => {
    let items = [
      {
        title: t("robotics.robots.column.id"),
        dataIndex: "id",
        key: "id",
      },
      {
        title: t("robotics.robots.column.type"),
        dataIndex: "type",
        key: "type",
      },
      {
        title: t("robotics.robots.column.name"),
        dataIndex: "name",
        key: "name",
      },
      {
        title: t("robotics.robots.column.status"),
        dataIndex: "status",
        key: "status",
      },
      {
        title: t("robotics.robots.column.currentJob"),
        dataIndex: "currentJobName",
        key: "currentJobName",
      },
      {
        title: t("robotics.robots.column.jobsWaiting"),
        dataIndex: "jobsWaitingCount",
        key: "jobsWaitingCount",
        render: (parameter, record) => (
          <>
            {parameter > 0 ? (
              <Popover
                title="Jobs waiting"
                content={
                  record._jobsWaitingNameList !== null && (
                    <ul style={{ paddingLeft: 14 }}>
                      {record._jobsWaitingNameList.map((jobName, index) => (
                        <li key={index}>{jobName}</li>
                      ))}
                    </ul>
                  )
                }
              >
                {parameter}
              </Popover>
            ) : (
              parameter
            )}
          </>
        ),
      },
    ];

    if (
      hasPermission(
        appContext.userPermissions,
        Constants.PERMISSIONS.ROBOTICS.ROBOTS.VIEW_ROBOTS_ADDRESSES
      )
    ) {
      items.push({
        title: t("robotics.robots.column.address"),
        dataIndex: "address",
        key: "address",
        render: (text) => (
          <Space>
            {showAddress ? text : "XXXXXX"}

            <MyShowHiddenIcon
              isHidden={showAddress}
              setIsHidden={setShowAddress}
            />

            <MyCopyIcon notificationApi={notificationApi} text={text} />
          </Space>
        ),
      });
    }

    items.push(
      {
        title: t("robotics.robots.column.connectedAt"),
        dataIndex: "connectedAt",
        key: "connectedAt",
      },
      {
        title: t("robotics.robots.column.firmwareVersion"),
        dataIndex: "firmwareVersion",
        key: "firmwareVersion",
      },
      {
        title: t("robotics.robots.column.createdAt"),
        dataIndex: "createdAt",
        key: "createdAt",
      }
    );

    if (
      hasOnePermission(
        appContext.userPermissions,
        Constants.PERMISSIONS.ROBOTICS.ROBOTS.EDIT_ROBOT_NAME,
        Constants.PERMISSIONS.ROBOTICS.ROBOTS.DISCONNECT_ROBOT
      )
    ) {
      items.push({
        title: t("robotics.robots.column.actions"),
        dataIndex: "actions",
        key: "actions",
        render: (_, record) => (
          <Space size="middle">
            {hasPermission(
              appContext.userPermissions,
              Constants.PERMISSIONS.ROBOTICS.ROBOTS.EDIT_ROBOT_NAME
            ) && (
              <Popconfirm
                placement="left"
                title={t("robotics.robots.popconfirmEdit.title")}
                description={
                  <Input
                    placeholder="Name"
                    value={selectedRobotName}
                    onChange={(e) => setSelectedRobotName(e.target.value)}
                    maxLength={Constants.GLOBALS.MAX_ROBOTICS_ROBOT_NAME_LENGTH}
                  />
                }
                okButtonProps={{
                  disabled:
                    selectedRobotName.length <
                      Constants.GLOBALS.MIN_ROBOTICS_ROBOT_NAME_LENGTH ||
                    selectedRobotName.length >
                      Constants.GLOBALS.MAX_ROBOTICS_ROBOT_NAME_LENGTH,
                }}
                okText={t("common.button.confirm")}
                cancelText={t("common.button.cancel")}
                onConfirm={() =>
                  myFetch(
                    `/robot`,
                    "PATCH",
                    {
                      robotId: record.id,
                      robotName: selectedRobotName,
                    },
                    {},
                    myFetchContentType.JSON,
                    Constants.ROBOTICS_API_ADDRESS
                  ).catch((err) => {
                    if (err === 422) {
                      notificationApi["error"]({
                        message: t(
                          "robotics.robots.popconfirmEdit.errorNotification.message"
                        ),
                        description: t(
                          "robotics.robots.popconfirmEdit.errorNotification.description"
                        ),
                      });
                    }
                  })
                }
              >
                <Link to="#" onClick={() => setSelectedRobotName(record.name)}>
                  {t("common.text.edit")}
                </Link>
              </Popconfirm>
            )}

            {hasPermission(
              appContext.userPermissions,
              Constants.PERMISSIONS.ROBOTICS.ROBOTS.DISCONNECT_ROBOT
            ) && (
              <Popconfirm
                placement="left"
                title={t("robotics.robots.popconfirmDisconnect.title")}
                description={t(
                  "robotics.robots.popconfirmDisconnect.description"
                )}
                okText={t("common.button.confirm")}
                cancelText={t("common.button.cancel")}
                onConfirm={() =>
                  myFetch(
                    `/robot/${record.id}`,
                    "DELETE",
                    null,
                    {},
                    myFetchContentType.JSON,
                    Constants.ROBOTICS_API_ADDRESS
                  )
                }
              >
                <Link to="#">{t("common.text.disconnect")}</Link>
              </Popconfirm>
            )}
          </Space>
        ),
      });
    }

    return items;
  };

  const getRobotsTableItems = (robots) => {
    let items = [];

    robots.sort((a, b) => a.Status - b.Status);

    robots.forEach((robot) =>
      items.push({
        key: robot.Id,
        id: robot.Id,
        type: getRobotTypeString(robot.Type),
        name: robot.Name,
        status: getRobotStatusBadge(robot.Status),
        currentJobName:
          robot.CurrentJobName === ""
            ? Constants.TEXT_EMPTY_PLACEHOLDER
            : robot.CurrentJobName,
        jobsWaitingCount: robot.JobsWaitingCount,
        _jobsWaitingNameList: robot.JobsWaitingNameList,
        address: robot.Address,
        firmwareVersion: robot.FirmwareVersion,
        connectedAt: FormatDatetime(robot.ConnectedAt),
        createdAt: FormatDatetime(robot.CreatedAt),
        actions: robot.Actions,
      })
    );

    return items;
  };

  const getUnauthorizedTableContent = () => {
    let items = [
      {
        title: t("robotics.robots.column.id"),
        dataIndex: "id",
        key: "id",
      },
      {
        title: t("robotics.robots.column.type"),
        dataIndex: "type",
        key: "type",
      },
      {
        title: t("robotics.robots.column.address"),
        dataIndex: "address",
        key: "address",
      },
      {
        title: t("robotics.robots.column.connectedAt"),
        dataIndex: "connectedAt",
        key: "connectedAt",
      },
      {
        title: t("robotics.robots.column.firmwareVersion"),
        dataIndex: "firmwareVersion",
        key: "firmwareVersion",
      },
    ];

    if (
      hasPermission(
        appContext.userPermissions,
        Constants.PERMISSIONS.ROBOTICS.ROBOTS.AUTHORIZE_DENY_UNAUTHORIZED_ROBOTS
      )
    ) {
      items.push({
        title: t("robotics.robots.column.actions"),
        dataIndex: "actions",
        key: "actions",
        render: (_, record) => (
          <Space size="middle">
            <Popconfirm
              placement="left"
              title={t("robotics.unauthorizedRobots.popconfirmDeny.title")}
              description={t(
                "robotics.unauthorizedRobots.popconfirmDeny.description"
              )}
              okText={t("common.button.confirm")}
              cancelText={t("common.button.cancel")}
              onConfirm={() =>
                myFetch(
                  `/robot/deny/${record.id}`,
                  "DELETE",
                  null,
                  {},
                  myFetchContentType.JSON,
                  Constants.ROBOTICS_API_ADDRESS
                )
              }
            >
              <Link to="#">{t("common.text.deny")}</Link>
            </Popconfirm>

            <Popconfirm
              placement="left"
              title={t("robotics.unauthorizedRobots.popconfirmAuthorize.title")}
              description={t(
                "robotics.unauthorizedRobots.popconfirmAuthorize.description"
              )}
              okText={t("common.button.confirm")}
              cancelText={t("common.button.cancel")}
              onConfirm={() =>
                myFetch(
                  `/robot/authorize/${record.id}`,
                  "POST",
                  null,
                  {},
                  myFetchContentType.JSON,
                  Constants.ROBOTICS_API_ADDRESS
                )
              }
            >
              <Link to="#">{t("common.text.authorize")}</Link>
            </Popconfirm>
          </Space>
        ),
      });
    }

    return items;
  };

  const getUnauthorizedTableItems = (unauthorizedRobots) => {
    let items = [];

    unauthorizedRobots.forEach((robot) => {
      items.push({
        key: robot.Id,
        id: robot.Id,
        type: getRobotTypeString(robot.Type),
        address: robot.Address,
        connectedAt: FormatDatetime(robot.ConnectedAt),
        firmwareVersion: robot.FirmwareVersion,
        actions: robot.Actions,
      });
    });

    return items;
  };

  // type = 0 => robots, type = 1 => unauthorizedRobots
  const fetchRobots = (type, page = 1) => {
    myFetch(
      `/${type === 1 ? "u" : ""}robots?page=${page}`,
      "GET",
      null,
      {},
      myFetchContentType.JSON,
      Constants.ROBOTICS_API_ADDRESS
    ).then((data) => {
      if (type === 1) {
        setUnauthorizedRobots(
          data.UnauthorizedRobots === null ? [] : data.UnauthorizedRobots
        );

        setUnauthorizedRobotsTotalPages(data.TotalPages);
      } else {
        setRobots(data.Robots === null ? [] : data.Robots);
        setRobotsTotalPages(data.TotalPages);
      }
    });
  };

  useEffect(() => fetchRobots(0, robotsPaginationPage), [robotsPaginationPage]);

  useEffect(
    () => fetchRobots(1, unauthorizedRobotsPaginationPage),
    [unauthorizedRobotsPaginationPage]
  );

  useEffect(() => {
    myFetch(
      "/permitjoin",
      "GET",
      null,
      {},
      myFetchContentType.JSON,
      Constants.ROBOTICS_API_ADDRESS
    ).then((data) => setPermitJoinEnabled(data.Enabled));

    sseEventSource.current = new EventSource(
      `${Constants.ROBOTICS_API_ADDRESS}/sse`
    );

    sseEventSource.current.onmessage = (event) => {
      const data = JSON.parse(event.data);

      const cmd = data.Cmd;
      const body = data.Body;

      console.log("sse message", data);

      switch (cmd) {
        case ReceivedSSECommands.UpdateRobotStatus:
          setRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.RobotId);

            if (index !== -1) {
              newArr[index].Status = body.Status;
            }

            return newArr;
          });
          break;
        case ReceivedSSECommands.AddUnauthorizedRobot:
          console.log("a", unauthorizedRobotsPaginationPageRef.current);

          if (unauthorizedRobotsPaginationPageRef.current === 1) {
            setUnauthorizedRobots((arr) => {
              const newArr = [...arr];

              const index = arr.findIndex(
                (x) => x.Id === body.UnauthorizedRobot.Id
              );

              if (index !== -1) {
                newArr[index] = body.UnauthorizedRobot;
              } else {
                if (
                  newArr.length ===
                  Constants.GLOBALS.ROBOTICS_UNAUTHORIZED_PAGINATION_LIMIT
                ) {
                  newArr.pop();
                }

                newArr.unshift(body.UnauthorizedRobot);
              }

              return newArr;
            });
          }

          setUnauthorizedRobotsTotalPages(body.TotalPages);
          break;
        case ReceivedSSECommands.AddRobot:
          if (robotsPaginationPageRef.current === 1) {
            setRobots((arr) => {
              const newArr = [...arr];

              const index = arr.findIndex((x) => x.Id === body.Robot.Id);

              if (index !== -1) {
                newArr[index] = body.Robot;
              } else {
                if (
                  newArr.length ===
                  Constants.GLOBALS.ROBOTICS_ROBOTS_PAGINATION_LIMIT
                ) {
                  newArr.pop();
                }

                newArr.unshift(body.Robot);
              }

              return newArr;
            });
          }

          setRobotsTotalPages(body.TotalPages);

          // remove from unauthorized robots
          setUnauthorizedRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.Robot.Id);

            if (index !== -1) {
              newArr.splice(index, 1);
            }

            return newArr;
          });

          setUnauthorizedRobotsTotalPages(body.UnauthorizedRobotsTotalPages);

          // if user is on the last page and the last item is removed, we need to go back one page
          if (
            body.UnauthorizedRobotsTotalPages > 0 &&
            unauthorizedRobotsPaginationPageRef.current >
              body.UnauthorizedRobotsTotalPages
          ) {
            unauthorizedRobotsPaginationPageRef.current--;
            setUnauthorizedRobotsPaginationPage(
              unauthorizedRobotsPaginationPageRef.current
            );
          }
          break;
        case ReceivedSSECommands.RemoveUnauthorizedRobot:
          setUnauthorizedRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex(
              (x) => x.Id === body.UnauthorizedRobotId
            );

            if (index !== -1) {
              newArr.splice(index, 1);
            }

            return newArr;
          });

          setUnauthorizedRobotsTotalPages(body.TotalPages);

          // if user is on the last page and the last item is removed, we need to go back one page
          if (
            body.TotalPages > 0 &&
            unauthorizedRobotsPaginationPageRef.current > body.TotalPages
          ) {
            unauthorizedRobotsPaginationPageRef.current--;
            setUnauthorizedRobotsPaginationPage(
              unauthorizedRobotsPaginationPageRef.current
            );
          }
          break;
        case ReceivedSSECommands.RemoveRobot:
          setRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.RobotId);

            if (index !== -1) {
              newArr.splice(index, 1);
            }

            return newArr;
          });

          setRobotsTotalPages(body.TotalPages);

          // if user is on the last page and the last item is removed, we need to go back one page
          if (
            body.TotalPages > 0 &&
            robotsPaginationPageRef.current > body.TotalPages
          ) {
            robotsPaginationPageRef.current--;
            setRobotsPaginationPage(robotsPaginationPageRef.current);
          }
          break;
        case ReceivedSSECommands.RobotUpdated:
          setRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.RobotId);

            if (index !== -1) {
              newArr[index].Name = body.RobotName;
            }

            return newArr;
          });
          break;
        case ReceivedSSECommands.UpdateRobotCurrentJob:
          setRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.RobotId);

            if (index !== -1) {
              newArr[index].CurrentJobName = body.JobName;
              newArr[index].JobsWaitingNameList = body.JobsWaitingNameList;
            }

            return newArr;
          });
          break;
        case ReceivedSSECommands.UpdateRobotJobsWaitingCount:
          setRobots((arr) => {
            const newArr = [...arr];

            const index = arr.findIndex((x) => x.Id === body.RobotId);

            if (index !== -1) {
              newArr[index].JobsWaitingCount = body.JobsWaitingCount;
              newArr[index].JobsWaitingNameList = body.JobsWaitingNameList;
            }

            return newArr;
          });
          break;
        case ReceivedSSECommands.PermitJoinUpdated:
          setPermitJoinEnabled(body);
          break;
        default:
          break;
      }
    };

    sseEventSource.current.onerror = (event) => console.log("sse error", event);

    sseEventSource.current.onopen = (event) => console.log("sse open", event);

    sseEventSource.current.onclose = (event) => console.log("sse close", event);

    return () => sseEventSource.current.close();
  }, []);

  return (
    <>
      {notificationContextHolder}

      <div
        style={{
          display: "flex",
          justifyContent: "space-between",
        }}
      >
        <Typography.Title level={4}>
          {t("robotics.robots.header")}{" "}
          <Tooltip title={t("robotics.robots.viewApiDoc")}>
            <Link target="_blank" to={Constants.ROBOTICS_SWAGGER_ADDRESS}>
              <FileTextOutlined style={{ fontSize: 16 }} />
            </Link>
          </Tooltip>
        </Typography.Title>

        <Button
          disabled={
            !hasPermission(
              appContext.userPermissions,
              Constants.PERMISSIONS.ROBOTICS.ROBOTS.ENABLE_PERMIT_JOIN
            )
          }
          onClick={() => {
            console.log("click");
            myFetch(
              `/permitjoin/${permitJoinEnabled ? 0 : 1}`,
              "POST",
              null,
              {},
              myFetchContentType.JSON,
              Constants.ROBOTICS_API_ADDRESS
            );
          }}
          icon={permitJoinEnabled ? <LoadingOutlined /> : <PlusOutlined />}
        >
          {!permitJoinEnabled
            ? t("robotics.robots.button.permitJoin")
            : t("robotics.robots.button.disableJoin")}
        </Button>
      </div>

      <Table
        scroll={{ x: "max-content" }}
        columns={getRobotsTableContent()}
        dataSource={getRobotsTableItems(robots)}
        pagination={false}
      />

      <MyPagination
        paginationPage={robotsPaginationPage}
        setPaginationPage={(page) => {
          setRobotsPaginationPage(page);
          robotsPaginationPageRef.current = page;
        }}
        totalPages={robotsTotalPages}
      />

      <Typography.Title level={4}>
        {t("robotics.unauthorizedRobots.header")}
      </Typography.Title>

      <Table
        scroll={{ x: "max-content" }}
        columns={getUnauthorizedTableContent()}
        dataSource={getUnauthorizedTableItems(unauthorizedRobots)}
        pagination={false}
      />

      <MyPagination
        paginationPage={unauthorizedRobotsPaginationPage}
        setPaginationPage={(page) => {
          setUnauthorizedRobotsPaginationPage(page);
          unauthorizedRobotsPaginationPageRef.current = page;
        }}
        totalPages={unauthorizedRobotsTotalPages}
      />
    </>
  );
}