"use client";

import {
  Autocomplete,
  Badge,
  Box,
  Button,
  CircularProgress,
  Tab,
  Tabs,
  TextField,
  Tooltip,
  Typography,
} from "@mui/material";
import React, { Suspense } from "react";
import { usePathname, useRouter, useSearchParams } from "next/navigation";
import DoWorkbenchPickShell from "./DoWorkbenchPickShell";
import type { PrinterCombo } from "@/app/api/settings/printer";
import GoodPickExecutionWorkbenchRecord from "./GoodPickExecutionWorkbenchRecord";
import { useTranslation } from "react-i18next";
import WorkbenchTicketReleaseTableTab from "./WorkbenchTicketReleaseTable";
import { Stack } from "@mui/system";
import Swal from "sweetalert2";
import { printDNWorkbench } from "@/app/api/do/actions";
import {
  fetchWorkbenchEtraLaneSummary,
  fetchWorkbenchReleasedDoPickOrdersForSelectionToday,
  type WorkbenchEtraShopLaneGroup,
} from "@/app/api/doworkbench/actions";
import FinishedGoodCartonDashboardTab from "../FinishedGoodSearch/FinishedGoodCartonDashboardTab";
import TruckRoutingSummaryTabWorkbench from "./TruckRoutingSummaryTabWorkbench";

const ALLOWED_WORKBENCH_TABS = new Set([0, 1, 2, 3, 4, 5, 6]);

/** Backend Etra summary: each lane `total` = distinct incomplete (`pending`/`released`) `delivery_order_pick_order` rows for that day. */
function sumIncompleteEtraDopoTickets(groups: WorkbenchEtraShopLaneGroup[]): number {
  let n = 0;
  for (const g of groups) {
    for (const lane of g.lanes) {
      n += Number(lane.total) || 0;
    }
  }
  return n;
}

type Props = {
  defaultTabIndex?: 0 | 1;
  printerCombo?: PrinterCombo[];
};

function TabPanel(props: { value: number; index: number; children: React.ReactNode }) {
  const { value, index, children } = props;
  if (value !== index) return null;
  return <Box sx={{ pt: 2 }}>{children}</Box>;
}

const DoWorkbenchTabsInner: React.FC<Props> = ({ defaultTabIndex = 0, printerCombo = [] }) => {
  const searchParams = useSearchParams();
  const router = useRouter();
  const pathname = usePathname();

  const urlTabStr = searchParams.get("tab");
  const urlTicketRaw = searchParams.get("ticketNo");
  const urlTicketNo =
    urlTicketRaw && urlTicketRaw.trim() !== ""
      ? decodeURIComponent(urlTicketRaw.trim())
      : null;
  const urlTargetDateRaw = searchParams.get("targetDate");
  const urlTargetDate =
    urlTargetDateRaw && urlTargetDateRaw.trim() !== ""
      ? decodeURIComponent(urlTargetDateRaw.trim())
      : null;

  const [tab, setTab] = React.useState<number>(defaultTabIndex);
  const [a4Printer, setA4Printer] = React.useState<PrinterCombo | null>(null);
  const [labelPrinter, setLabelPrinter] = React.useState<PrinterCombo | null>(null);
  const [releasedOrderCount, setReleasedOrderCount] = React.useState(0);
  const [etraIncompleteDopoCount, setEtraIncompleteDopoCount] = React.useState(0);
  const { t } = useTranslation( );
  const a4Printers = React.useMemo(
    () => (printerCombo || []).filter((printer) => printer.type === "A4"),
    [printerCombo],
  );
  const labelPrinters = React.useMemo(
    () => (printerCombo || []).filter((printer) => printer.type === "Label"),
    [printerCombo],
  );

  const refreshWorkbenchCounts = React.useCallback(async () => {
    const [releasedRes, etraRes] = await Promise.allSettled([
      fetchWorkbenchReleasedDoPickOrdersForSelectionToday(),
      fetchWorkbenchEtraLaneSummary(),
    ]);
    if (releasedRes.status === "fulfilled") {
      setReleasedOrderCount(releasedRes.value.length);
    } else {
      console.error("Error fetching workbench released order count:", releasedRes.reason);
      setReleasedOrderCount(0);
    }
    if (etraRes.status === "fulfilled") {
      setEtraIncompleteDopoCount(sumIncompleteEtraDopoTickets(etraRes.value));
    } else {
      console.error("Error fetching workbench Etra incomplete count:", etraRes.reason);
      setEtraIncompleteDopoCount(0);
    }
  }, []);

  React.useEffect(() => {
    void refreshWorkbenchCounts();
  }, [refreshWorkbenchCounts]);

  React.useEffect(() => {
    const onAssigned = () => {
      void refreshWorkbenchCounts();
    };
    window.addEventListener("pickOrderAssigned", onAssigned);
    return () => window.removeEventListener("pickOrderAssigned", onAssigned);
  }, [refreshWorkbenchCounts]);

  /** Opening Etra tab refreshes badge (completion does not always dispatch `pickOrderAssigned`). */
  const etraTabMountSkipRef = React.useRef(false);
  React.useEffect(() => {
    if (!etraTabMountSkipRef.current) {
      etraTabMountSkipRef.current = true;
      return;
    }
    if (tab === 1) void refreshWorkbenchCounts();
  }, [tab, refreshWorkbenchCounts]);

  React.useEffect(() => {
    if (urlTabStr == null || urlTabStr === "") return;
    const n = parseInt(urlTabStr, 10);
    if (!Number.isNaN(n) && ALLOWED_WORKBENCH_TABS.has(n)) {
      setTab(n);
    }
  }, [urlTabStr]);

  const handleTabChange = React.useCallback(
    (_: React.SyntheticEvent, newTab: number) => {
      setTab(newTab);
      const params = new URLSearchParams(searchParams.toString());
      params.set("tab", String(newTab));
      /* ticketNo / targetDate deep-link only for "Finished Good Record" (mine) */
      if (newTab !== 2) {
        params.delete("ticketNo");
        params.delete("targetDate");
      }
      const qs = params.toString();
      router.replace(qs ? `${pathname}?${qs}` : pathname, { scroll: false });
    },
    [pathname, router, searchParams],
  );

  const handleAllDraft = React.useCallback(async () => {
    try {
      if (!a4Printer) {
        await Swal.fire({
          position: "bottom-end",
          icon: "warning",
          text: t("Please select a printer first"),
          showConfirmButton: false,
          timer: 1500,
        });
        return;
      }

      const releasedOrders = await fetchWorkbenchReleasedDoPickOrdersForSelectionToday();
      if (releasedOrders.length === 0) {
        await Swal.fire({
          title: "",
          text: t("No released pick order records found."),
          icon: "info",
        });
        return;
      }

      const confirmResult = await Swal.fire({
        title: t("Batch Print"),
        text: `${t("Confirm print: (")}${releasedOrders.length}${t("piece(s))")}`,
        icon: "question",
        showCancelButton: true,
        confirmButtonText: t("Confirm"),
        cancelButtonText: t("Cancel"),
        confirmButtonColor: "#8dba00",
        cancelButtonColor: "#F04438",
      });
      if (!confirmResult.isConfirmed) return;

      Swal.fire({
        title: t("Printing..."),
        text: t("Please wait..."),
        allowOutsideClick: false,
        allowEscapeKey: false,
        didOpen: () => Swal.showLoading(),
      });

      for (const order of releasedOrders) {
        const printRequest = {
          printerId: a4Printer.id,
          printQty: 1,
          isDraft: true,
          numOfCarton: 0,
          deliveryOrderPickOrderId: order.id,
        };
        const response = await printDNWorkbench(printRequest);
        if (!response.success) {
          console.error(`Workbench print draft failed for deliveryOrderPickOrderId ${order.id}:`, response.message);
        }
      }

      Swal.close();
      await Swal.fire({
        position: "bottom-end",
        icon: "success",
        text: t("Printed Successfully."),
        showConfirmButton: false,
        timer: 1500,
      });
      await refreshWorkbenchCounts();
    } catch (error) {
      Swal.close();
      console.error("Error in workbench handleAllDraft:", error);
      await Swal.fire({
        icon: "error",
        text: t("An error occurred during batch print"),
      });
    }
  }, [a4Printer, t, refreshWorkbenchCounts]);

  return (
    <Box>
      <Stack
        direction="row"
        spacing={2}
        sx={{
          alignItems: "center",
          justifyContent: "flex-end",
          flexWrap: "wrap",
          rowGap: 1,
          mb: 1,
        }}
      >
        <Typography variant="body2" sx={{ minWidth: "fit-content" }}>
          {t("A4 Printer")}:
        </Typography>
        <Autocomplete
          options={a4Printers}
          getOptionLabel={(option) => option.name || option.label || option.code || `Printer ${option.id}`}
          value={a4Printer}
          onChange={(_, newValue) => setA4Printer(newValue)}
          sx={{ minWidth: 200 }}
          size="small"
          renderInput={(params) => (
            <TextField
              {...params}
              placeholder={t("A4 Printer")}
              inputProps={{ ...params.inputProps, readOnly: true }}
            />
          )}
        />
        <Typography variant="body2" sx={{ minWidth: "fit-content" }}>
          {t("Label Printer")}:
        </Typography>
        <Autocomplete
          options={labelPrinters}
          getOptionLabel={(option) => option.name || option.label || option.code || `Printer ${option.id}`}
          value={labelPrinter}
          onChange={(_, newValue) => setLabelPrinter(newValue)}
          sx={{ minWidth: 200 }}
          size="small"
          renderInput={(params) => (
            <TextField
              {...params}
              placeholder={t("Label Printer")}
              inputProps={{ ...params.inputProps, readOnly: true }}
            />
          )}
        />
        <Button
          variant="contained"
          onClick={() => void handleAllDraft()}
        >
          {`${t("Print All Draft")} (${releasedOrderCount})`}
        </Button>
      </Stack>
      <Tabs
        value={tab}
        onChange={handleTabChange}
        sx={{
          borderBottom: 1,
          borderColor: "divider",
          "& .MuiTabs-flexContainer": {
            columnGap: 2,
            rowGap: 1,
          },
          /* 否則 Tab 內 overflow:hidden 會把 Badge 數字裁成紅點 */
          "& .MuiTab-root": {
            overflow: "visible",
            minWidth: "auto",
            px: 2,
          },
        }}
      >
        <Tab label={t("Pick Order Detail")} value={0} />
        <Tab
          value={1}
          sx={{
            overflow: "visible",
            /* 徽章在標籤右側外凸，預留空間避免與下一個 Tab 貼死 */
            pr: etraIncompleteDopoCount > 99 ? 5 : etraIncompleteDopoCount > 0 ? 4 : 2,
          }}
          label={
            <Tooltip
              title={
                etraIncompleteDopoCount > 0
                  ? t("Etra incomplete badge tooltip", { count: etraIncompleteDopoCount })
                  : t("Etra incomplete badge tooltip none")
              }
            >
              <Box component="span" sx={{ display: "inline-flex", alignItems: "center" }}>
                <Badge
                  color="error"
                  variant="standard"
                  badgeContent={etraIncompleteDopoCount > 99 ? "99+" : etraIncompleteDopoCount}
                  invisible={etraIncompleteDopoCount === 0}
                  sx={{
                    "& .MuiBadge-badge": {
                      fontWeight: 800,
                      fontSize: "0.7rem",
                      minWidth: 18,
                      height: 18,
                      lineHeight: "18px",
                      px: 0.5,
                      right: -8,
                      top: 2,
                    },
                  }}
                >
                  <Typography
                    component="span"
                    variant="inherit"
                    sx={{ pr: etraIncompleteDopoCount > 0 ? 1 : 0 }}
                  >
                    {t("Etra Pick Order Detail")}
                  </Typography>
                </Badge>
              </Box>
            </Tooltip>
          }
        />
        <Tab label={t("Finished Good Record")} value={2} />
        <Tab label={t("Finished Good Record (All)")} value={3} />
        <Tab label={t("Ticket Release Table")} value={4} />
        <Tab label={t("成品出倉出箱數量")} value={5} />
        <Tab label={t("送貨路線摘要")} value={6} />
      </Tabs>

      <TabPanel value={tab} index={0}>
        <DoWorkbenchPickShell laneMode="normal" />
      </TabPanel>
      <TabPanel value={tab} index={1}>
        <DoWorkbenchPickShell laneMode="etra" />
      </TabPanel>
      <TabPanel value={tab} index={2}>
        <GoodPickExecutionWorkbenchRecord
          key={`workbench-record-mine-${urlTicketNo ?? ""}-${urlTargetDate ?? ""}`}
          printerCombo={printerCombo}
          listScope="mine"
          a4Printer={a4Printer}
          labelPrinter={labelPrinter}
          initialTicketNo={urlTicketNo}
          initialTargetDate={urlTargetDate}
        />
      </TabPanel>
      <TabPanel value={tab} index={3}>
        <GoodPickExecutionWorkbenchRecord
          printerCombo={printerCombo}
          listScope="all"
          a4Printer={a4Printer}
          labelPrinter={labelPrinter}
        />
      </TabPanel>
      <TabPanel value={tab} index={4}>
        <WorkbenchTicketReleaseTableTab />
      </TabPanel>
      <TabPanel value={tab} index={5}>
        <FinishedGoodCartonDashboardTab mode="workbench" />
      </TabPanel>
      <TabPanel value={tab} index={6}>
        <TruckRoutingSummaryTabWorkbench />
      </TabPanel>

    </Box>
  );
};

const DoWorkbenchTabs: React.FC<Props> = (props) => (
  <Suspense
    fallback={
      <Box sx={{ display: "flex", justifyContent: "center", p: 4 }}>
        <CircularProgress />
      </Box>
    }
  >
    <DoWorkbenchTabsInner {...props} />
  </Suspense>
);

export default DoWorkbenchTabs;