import React, { useContext, useEffect, useRef, useState } from "react";

import { makeStyles } from "@material-ui/core/styles";
import { IconButton } from "@mui/material";
import Paper from "@material-ui/core/Paper";
import InputBase from "@material-ui/core/InputBase";
import Tabs from "@material-ui/core/Tabs";
import Tab from "@material-ui/core/Tab";
import Badge from "@material-ui/core/Badge";

import Tooltip from "@material-ui/core/Tooltip";


import SearchIcon from "@material-ui/icons/Search";
import MoveToInboxIcon from "@material-ui/icons/MoveToInbox";
import CheckBoxIcon from "@material-ui/icons/CheckBox";
import MenuIcon from "@material-ui/icons/Menu";
import FindInPageIcon from '@material-ui/icons/FindInPage';

import FormControlLabel from "@material-ui/core/FormControlLabel";
import Switch from "@material-ui/core/Switch";

import NewTicketModal from "../NewTicketModal";
import TicketsList from "../TicketsList";
import TabPanel from "../TabPanel";

import { i18n } from "../../translate/i18n";
import { AuthContext } from "../../context/Auth/AuthContext";
import { Can } from "../Can";
import TicketsQueueSelect from "../TicketsQueueSelect";
import { Button } from "@material-ui/core";

import { TabTicketContext } from "../../context/TabTicketHeaderOption/TabTicketHeaderOption";

import { SearchTicketContext } from "../../context/SearchTicket/SearchTicket";
import useTickets from "../../hooks/useTickets"
import api from "../../services/api";
import toastError from "../../errors/toastError";

const useStyles = makeStyles((theme) => ({
  ticketsWrapper: {
    position: "relative",
    display: "flex",
    height: "100%",
    flexDirection: "column",
    overflow: "hidden",
    borderTopRightRadius: 0,
    borderBottomRightRadius: 0,
  },

  tabsHeader: {
    flex: "none",
    backgroundColor: "#eee",
  },

  settingsIcon: {
    alignSelf: "center",
    marginLeft: "auto",
    padding: 8,
  },

  tab: {
    minWidth: 120,
    width: 120,
  },

  ticketOptionsBox: {
    display: "flex",
    justifyContent: "space-between",
    alignItems: "center",
    background: "#fafafa",
    padding: theme.spacing(1),
  },

  serachInputWrapper: {
    flex: 1,
    display: "flex",
    flexDirection: "column",
    gap: "10px",
    borderRadius: 40,
    padding: 4,
    marginRight: theme.spacing(1),
  },

  searchInputHeader: {
    flex: 1,
    background: "#fff",
    display: "flex",
    borderRadius: 40,
    padding: 4,
    marginRight: theme.spacing(1),
  },

  searchContentInput: {
    flex: 1,
    background: "#fff",
    display: "flex",
    borderRadius: 40,
    padding: 4,
    marginRight: theme.spacing(1),
  },

  searchIcon: {
    color: "grey",
    marginLeft: 6,
    marginRight: 6,
    alignSelf: "center",
  },

  menuSearch: {
    color: "grey",
    alignSelf: "center",
  },

  searchInput: {
    flex: 1,
    border: "none",
    borderRadius: 30,
  },

  badge: {
    right: "-10px",
  },
  show: {
    display: "block",
  },
  hide: {
    display: "none !important",
  },
}));

const DEFAULT_SEARCH_PARAM = { searchParam: "", searchParamContent: "" }

const TicketsManager = () => {

  const { tabOption, setTabOption } = useContext(TabTicketContext);

  const { setSearchTicket } = useContext(SearchTicketContext)

  const classes = useStyles();

  const [searchParam, setSearchParam] = useState(DEFAULT_SEARCH_PARAM);
  const [tab, setTab] = useState("open");
  const [tabOpen, setTabOpen] = useState("open");
  const [newTicketModalOpen, setNewTicketModalOpen] = useState(false);
  const [showAllTickets, setShowAllTickets] = useState(false);
  const { user } = useContext(AuthContext);

  const [openCount, setOpenCount] = useState(0);
  const [pendingCount, setPendingCount] = useState(0);

  const userQueueIds = user.queues.map((q) => q.id);
  const [selectedQueueIds, setSelectedQueueIds] = useState(userQueueIds || []);

  const [showContentSearch, setShowContentSearch] = useState(false)
  const searchInputRef = useRef();
  const searchContentInputRef = useRef();
  const [inputSearch, setInputSearch] = useState('');
  const [inputContentSearch, setInputContentSearch] = useState("")

  const [openTooltipSearch, setOpenTooltipSearch] = useState(false)

  const [waitingTime, setWaitingTime] = useState('00:00');
  const [tickets, setTickets] = useState([]);
  const [settings, setSettings] = useState([])

  let searchTimeout;
  let searchContentTimeout;

  useEffect(() => {
    if (user.profile.toUpperCase() === "ADMIN" || 
    user.profile.toUpperCase() === "SUPERVISOR" || 
    user.profile.toUpperCase() === "MASTER") {
      setShowAllTickets(true);
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  useEffect(() => {
    if (tab === "search") {
      searchInputRef.current.focus();
    }

    setTabOption(tab)

  }, [tab, setTabOption]);

  useEffect(() => {
    const fetchSession = async () => {
      try {
        const { data } = await api.get('/settings')
        setSettings(data.settings)
      } catch (err) {
        toastError(err)
      }
    }
    fetchSession()
  }, [])

  const getSettingValue = (key) => {
    const { value } = settings.find((s) => s.key === key)
    return value
  }

  const fetchTickets = async () =>{
      try {
        const { data } = await api.get("/tickets", {
        params: {
          status: 'pending',
          queueIds: JSON.stringify(selectedQueueIds)          
        },
      });
      setTickets(data.tickets);
    } catch (err) {
      toastError(err);
    }
  
  }
  useEffect(() => {
    if(settings?.length > 0 && getSettingValue('waitingTimeTickets') === 'enabled') {
      fetchTickets();
    
      const intervalId = setInterval(fetchTickets, 7000); 

      return () => {
        clearInterval(intervalId);
      };
    }
  }, [selectedQueueIds, settings]);

  useEffect(() => {    
    const calculateAverageTime = () => {      
      if(tickets.length > 0){
        const now = new Date();
        const differenceTime = tickets?.map(ticket => {
          const updatedAt = new Date(ticket.updatedAt);
          const difference = now - updatedAt; 
        return difference;
      });
      const sumDifferences = differenceTime.reduce((total, difference) => total + difference, 0);
      const averageTimeMilliseconds = sumDifferences / tickets?.length;
      let hours = Math.floor(averageTimeMilliseconds / 3600000);
      const minutes = Math.floor((averageTimeMilliseconds % 3600000) / 60000);
      
      let days = hours >= 24 ? parseInt(hours/24) : '';
      
      if(days != '') hours = hours - (24*days);
      
      const averageTimeFormated = `${days != '' ? `${days}d ` : days}${hours.toString().padStart(2, '0')}h${minutes.toString().padStart(2, '0')}`;
      
      return averageTimeFormated;
    }else return '00:00';
    }  
    
    setWaitingTime(calculateAverageTime());
  },[tickets]);
  
  useEffect(() => {

    // clearTimeout(searchContentTimeout);

    // setSearchParam(prev => ({ ...prev, searchParamContent: "" })) 

    if (!inputContentSearch) return 

    if (!searchContentTimeout) return

    // searchContentTimeout = setTimeout(() => {

    //   setSearchParam(prev => ({ ...prev, searchParamContent: inputContentSearch }));

    // }, 500);

    clearTimeout(searchContentTimeout);

    setSearchParam(prev => ({ ...prev, searchParamContent: "" })) 


  }, [inputContentSearch, searchContentTimeout]);

  useEffect(() => {

    //console.log(selectedQueueIds);
    if (tabOption === 'open') {

      setTabOption('')
      setSearchParam(DEFAULT_SEARCH_PARAM);
      setInputSearch('');
      setInputContentSearch('')
      setTab("open");
      return;
    }

  }, [tabOption, setTabOption])

 
  const removeExtraSpace = (str) => {

    str = str.replace(/^\s+/g, '')

    return str.replace(/\s+/g, ' ')
  }

  const handleSearch = (e) => {
    let searchedTerm = e.target.value.toLowerCase()

    setInputSearch(removeExtraSpace(searchedTerm))

    setSearchTicket(searchParam.searchParam)

    clearTimeout(searchTimeout);

    if (searchedTerm === "") {
      setSearchParam(prev => ({ ...prev, searchParam: searchedTerm }))
      setInputSearch(searchedTerm)
      setShowContentSearch(false)
      setTab("open");
      return;
    }

    if (searchedTerm.length < 4) {
      setSearchParam(prev => ({ ...prev, searchParamContent: "" }))
      setInputContentSearch('')
    }


    searchTimeout = setTimeout(() => {

      setSearchParam(prev => ({ ...prev, searchParam: searchedTerm }));

    }, 500);
  };

  const handleContentSearch = e => {

    let searchedContentText = removeExtraSpace(e.target.value.toLowerCase())

    setInputContentSearch(searchedContentText) 
     
    searchContentTimeout = setTimeout(() => {

      setSearchParam(prev => ({ ...prev, searchParamContent: searchedContentText }));

    }, 500);

  }

  const handleOpenTooltipSearch = () => {
    if (searchParam.searchParam.length < 4) {
      setOpenTooltipSearch(true)
    }
  }

  const handleCloseTooltipSearch = () => {
    setOpenTooltipSearch(false)
    if (searchParam.searchParam.length < 4) {
      searchInputRef.current.focus()
    }
  }

  const handleChangeTab = (e, newValue) => {
    setTab(newValue);
  };

  const handleChangeTabOpen = (e, newValue) => {
    setTabOpen(newValue);
  };

  const applyPanelStyle = (status) => {
    if (tabOpen !== status) {
      return { width: 0, height: 0 };
    }
  };

  return (
    <Paper elevation={0} variant="outlined" className={classes.ticketsWrapper}>
      <NewTicketModal
        modalOpen={newTicketModalOpen}
        onClose={(e) => setNewTicketModalOpen(false)}
      />
      <Paper elevation={0} square className={classes.tabsHeader}>
        <Tabs
          value={tab}
          onChange={handleChangeTab}
          variant="fullWidth"
          indicatorColor="primary"
          textColor="primary"
          aria-label="icon label tabs example"
        >
          <Tab
            value={"open"}
            icon={<MoveToInboxIcon />}
            label={i18n.t("tickets.tabs.open.title")}
            classes={{ root: classes.tab }}
          />
          <Tab
            value={"closed"}
            icon={<CheckBoxIcon />}
            label={i18n.t("tickets.tabs.closed.title")}
            classes={{ root: classes.tab }}
          />
          <Tab
            value={"search"}
            icon={<SearchIcon />}
            label={i18n.t("tickets.tabs.search.title")}
            classes={{ root: classes.tab }}
          />
        </Tabs>
      </Paper>
      <Paper square elevation={0} className={classes.ticketOptionsBox}>
        {tab === "search" ? (
          <div className={classes.serachInputWrapper}>
            <div className={classes.searchInputHeader}>
              <SearchIcon className={classes.searchIcon} />
              <InputBase
                className={classes.searchInput}
                inputRef={searchInputRef}
                placeholder={i18n.t("tickets.search.placeholder")}
                type="search"
                value={inputSearch}
                onChange={handleSearch}
              />
              {/* <IconButton onClick={() => setShowContentSearch(prev => !prev)}>
                <MenuIcon className={classes.menuSearch} />
              </IconButton> */}
              <Tooltip
                open={openTooltipSearch}
                onOpen={() => handleOpenTooltipSearch()}
                onClose={() => handleCloseTooltipSearch()}
                title="Digite pelo menos 4 caracteres"
                arrow>
                <span>
                  <IconButton
                    disabled={searchParam.searchParam.length < 4}
                    onClick={() => setShowContentSearch(prev => !prev)}
                  >
                    <MenuIcon className={classes.menuSearch} />
                  </IconButton>
                </span>
              </Tooltip>
            </div>
            {
              // showContentSearch ?
              (showContentSearch && searchParam.searchParam.length >= 4) ?
                (<div className={classes.searchContentInput}>
                  <FindInPageIcon className={classes.searchIcon} />
                  <InputBase
                    className={classes.searchInput}
                    inputRef={searchContentInputRef}
                    placeholder={i18n.t("Busca por conteúdo")}
                    type="search"
                    value={inputContentSearch}
                    onChange={(e) => handleContentSearch(e)}
                  />
                </div>) : null
            }
          </div>
        ) : (
          <>
            <Button
              variant="outlined"
              color="primary"
              onClick={() => setNewTicketModalOpen(true)}
            >
              {i18n.t("ticketsManager.buttons.newTicket")}
            </Button>
            <Can
              role={user.profile}
              perform="tickets-manager:showall"
              yes={() => (
                <FormControlLabel
                  label={i18n.t("tickets.buttons.showAll")}
                  labelPlacement="start"
                  control={
                    <Switch
                      size="small"
                      checked={showAllTickets}
                      onChange={() =>
                        setShowAllTickets((prevState) => !prevState)
                      }
                      name="showAllTickets"
                      color="primary"
                    />
                  }
                />
              )}
            />
          </>
        )}
        <TicketsQueueSelect
          style={{ marginLeft: 6 }}
          selectedQueueIds={selectedQueueIds}
          userQueues={user?.queues}
          onChange={(values) => setSelectedQueueIds(values)}
        />
      </Paper>
      <TabPanel value={tab} name="open" className={classes.ticketsWrapper}>
        <Tabs
          value={tabOpen}
          onChange={handleChangeTabOpen}
          indicatorColor="primary"
          textColor="primary"
          variant="fullWidth"
        >
          <Tab
            label={
              <Badge
                className={classes.badge}
                badgeContent={openCount}
                color="primary"
              >
                {i18n.t("ticketsList.assignedHeader")}
              </Badge>
            }
            value={"open"}
          />
          <Tab
            label={
              <Badge
                className={classes.badge}
                badgeContent={pendingCount}
                color="secondary"
              >
                {i18n.t("ticketsList.pendingHeader")}
              </Badge>
            }
            value={"pending"}
          />{
            (settings?.length > 0 && getSettingValue('waitingTimeTickets') === 'enabled') &&
            <span style={{display: 'flex', alignItems: 'center', flexDirection:'column', justifyContent: 'flex-start'}}>
              <label style ={{color: 'red',fontWeight: 'bold', padding: '.1rem', fontSize: '8px', textAlign:'center', margin:'0'}}>
              <i>ESPERA</i>
              </label>
            <label style={{color: 'gray',fontWeight: 'bold', padding: '.1rem', textDecoration: 'underline', fontSize: '13px'}}>
              {waitingTime}
              </label>
          </span>
          }
        </Tabs>
        <Paper className={classes.ticketsWrapper}>
          <TicketsList
            status={"open"}
            showAll={showAllTickets}
            selectedQueueIds={selectedQueueIds}
            updateCount={(val) => setOpenCount(val)}
            style={applyPanelStyle("open")}
          />
          <TicketsList
            status="pending"
            selectedQueueIds={selectedQueueIds}
            updateCount={(val) => setPendingCount(val)}
            style={applyPanelStyle("pending")}
          />
        </Paper>
      </TabPanel>
      <TabPanel value={tab} name="closed" className={classes.ticketsWrapper}>
        <TicketsList
          status="closed"
          showAll={true}
          selectedQueueIds={selectedQueueIds}
        />
      </TabPanel>
      <TabPanel value={tab} name="search" className={classes.ticketsWrapper}>


        <TicketsList
          searchParam={searchParam.searchParam}
          searchParamContent={searchParam.searchParamContent}
          tab={tab}
          showAll={true}
          selectedQueueIds={selectedQueueIds}
        />

      </TabPanel>
    </Paper>
  );
};

export default TicketsManager;