shoc-frontend-new/src/app/(protected)/followups/index.tsx

import { useMemo, useState } from "react";
import { useNavigate } from "react-router";
import DeleteOutlineIcon from "@mui/icons-material/DeleteOutlined";
import EditOutlinedIcon from "@mui/icons-material/EditOutlined";
import {
  Alert,
  Box,
  Button,
  Chip,
  CircularProgress,
  Dialog,
  DialogActions,
  DialogContent,
  DialogContentText,
  DialogTitle,
  FormControl,
  IconButton,
  InputLabel,
  MenuItem,
  Paper,
  Select,
  Stack,
  Table,
  TableBody,
  TableCell,
  TableContainer,
  TableHead,
  TablePagination,
  TableRow,
  TextField,
  Tooltip,
  Typography,
} from "@mui/material";
import type { FollowUpListItem } from "@/domain/follow-ups/types/follow-up";
import { useDeleteFollowUp } from "@/domain/follow-ups/use-cases/use-delete-follow-up";
import { useFollowUpsList } from "@/domain/follow-ups/use-cases/use-follow-ups-list";
import { useDebounce } from "@/hooks/use-debounce";
import { toDateInputValue } from "@/lib/time-utils";

const STATUS_OPTIONS = ["Open", "Completed", "Cancelled", ""];

export default function FollowUpsListPage() {
  const navigate = useNavigate();
  const [search, setSearch] = useState("");
  const [page, setPage] = useState(0);
  const [pageSize, setPageSize] = useState(12);
  const [status, setStatus] = useState("Open");
  const [deleteTarget, setDeleteTarget] = useState<FollowUpListItem | null>(null);

  const debouncedSearch = useDebounce(search, 300);
  const deleteFollowUp = useDeleteFollowUp();

  const listParams = useMemo(
    () => ({ search: debouncedSearch, page: page + 1, pageSize, status }),
    [debouncedSearch, page, pageSize, status],
  );

  const { data, isLoading, isFetching, error } = useFollowUpsList(listParams);
  const rows = data?.items ?? [];
  const totalCount = data?.totalCount ?? 0;

  return (
    <Box className="flex flex-col gap-4 p-4">
      <Stack
        direction={{ xs: "column", md: "row" }}
        spacing={2}
        sx={{
          alignItems: { xs: "stretch", md: "center" },
          justifyContent: "space-between",
        }}
      >
        <Stack
          direction="row"
          spacing={2}
          sx={{
            alignItems: "baseline",
          }}
        >
          <Typography variant="h5" component="h1">
            Follow-ups
          </Typography>
          <Typography
            variant="body2"
            sx={{
              color: "text.secondary",
            }}
          >
            {totalCount} total
          </Typography>
          {isFetching && !isLoading && <CircularProgress size={16} />}
        </Stack>

        <Stack
          direction={{ xs: "column", sm: "row" }}
          spacing={2}
          sx={{
            alignItems: "center",
          }}
        >
          <TextField
            size="small"
            value={search}
            onChange={(e) => {
              setSearch(e.target.value);
              setPage(0);
            }}
            placeholder="Search follow-ups..."
            className="min-w-sidebar"
          />
          <FormControl size="small" className="min-w-[140px]">
            <InputLabel>Status</InputLabel>
            <Select
              label="Status"
              value={status}
              onChange={(e) => {
                setStatus(e.target.value);
                setPage(0);
              }}
            >
              {STATUS_OPTIONS.map((s) => (
                <MenuItem key={s || "all"} value={s}>
                  {s || "All"}
                </MenuItem>
              ))}
            </Select>
          </FormControl>
          <Button variant="contained" onClick={() => navigate("/followups/new")}>
            + New Follow-up
          </Button>
        </Stack>
      </Stack>
      {Boolean(error) && (
        <Alert severity="error">
          {error instanceof Error ? error.message : "Failed to load follow-ups"}
        </Alert>
      )}
      <TableContainer component={Paper} variant="outlined">
        <Table size="small">
          <TableHead>
            <TableRow>
              <TableCell className="font-semibold">Reason</TableCell>
              <TableCell className="font-semibold">Schedule</TableCell>
              <TableCell className="font-semibold">Assigned To</TableCell>
              <TableCell className="font-semibold">Account</TableCell>
              <TableCell className="font-semibold">Location</TableCell>
              <TableCell className="font-semibold">WO #</TableCell>
              <TableCell className="font-semibold">Status</TableCell>
              <TableCell align="right" className="font-semibold">
                Actions
              </TableCell>
            </TableRow>
          </TableHead>
          <TableBody>
            {isLoading ? (
              <TableRow>
                <TableCell colSpan={8} align="center" className="py-10">
                  <CircularProgress size={28} />
                </TableCell>
              </TableRow>
            ) : rows.length === 0 ? (
              <TableRow>
                <TableCell colSpan={8} align="center" className="py-10">
                  <Typography
                    sx={{
                      color: "text.secondary",
                    }}
                  >
                    No follow-ups found
                  </Typography>
                </TableCell>
              </TableRow>
            ) : (
              rows.map((row) => (
                <TableRow key={String(row.id)} hover>
                  <TableCell>
                    <Button
                      variant="text"
                      size="small"
                      className="font-semibold"
                      onClick={() => navigate(`/followups/edit/${row.id}`)}
                    >
                      {row.reason || "—"}
                    </Button>
                  </TableCell>
                  <TableCell>
                    {toDateInputValue(row.scheduleDate) || "—"}
                    {row.scheduleStartTime ? ` ${row.scheduleStartTime.slice(0, 5)}` : ""}
                  </TableCell>
                  <TableCell>{row.assignedTo || "—"}</TableCell>
                  <TableCell>{row.accountName || "—"}</TableCell>
                  <TableCell>{row.locationName || "—"}</TableCell>
                  <TableCell>{row.internalWONumber || row.workOrderNumber || "—"}</TableCell>
                  <TableCell>
                    <Chip size="small" label={row.status || "—"} />
                  </TableCell>
                  <TableCell align="right">
                    <Tooltip title="Edit">
                      <IconButton
                        size="small"
                        onClick={() => navigate(`/followups/edit/${row.id}`)}
                      >
                        <EditOutlinedIcon fontSize="small" />
                      </IconButton>
                    </Tooltip>
                    <Tooltip title="Delete">
                      <IconButton size="small" onClick={() => setDeleteTarget(row)}>
                        <DeleteOutlineIcon fontSize="small" />
                      </IconButton>
                    </Tooltip>
                  </TableCell>
                </TableRow>
              ))
            )}
          </TableBody>
        </Table>
      </TableContainer>
      <TablePagination
        component="div"
        count={totalCount}
        page={page}
        onPageChange={(_e, nextPage) => setPage(nextPage)}
        rowsPerPage={pageSize}
        onRowsPerPageChange={(e) => {
          setPageSize(Number(e.target.value));
          setPage(0);
        }}
        rowsPerPageOptions={[12, 24, 48]}
      />
      <Dialog open={Boolean(deleteTarget)} onClose={() => setDeleteTarget(null)}>
        <DialogTitle>Delete Follow-up</DialogTitle>
        <DialogContent>
          <DialogContentText>Are you sure you want to delete this follow-up?</DialogContentText>
        </DialogContent>
        <DialogActions>
          <Button onClick={() => setDeleteTarget(null)} disabled={deleteFollowUp.isPending}>
            Cancel
          </Button>
          <Button
            color="error"
            variant="contained"
            disabled={deleteFollowUp.isPending}
            onClick={() => {
              if (!deleteTarget) return;
              deleteFollowUp.mutate(deleteTarget.id, {
                onSuccess: () => setDeleteTarget(null),
              });
            }}
          >
            Delete
          </Button>
        </DialogActions>
      </Dialog>
    </Box>
  );
}