"use client";

import { useEffect, useState } from "react";
import {
  Box,
  Button,
  IconButton,
  Paper,
  Table,
  TableBody,
  TableCell,
  TableContainer,
  TableHead,
  TableRow,
  Typography,
} from "@mui/material";
import CheckCircleIcon from "@mui/icons-material/CheckCircle";
import CancelIcon from "@mui/icons-material/Cancel";
import MoreVertIcon from "@mui/icons-material/MoreVert";

import { dashboardService } from "@/app/services/dashboardService";
import { formatToDateTimeString } from "@/app/utils/formatDate";

import "./TransactionsWaitingApproval.scss";
import {
  type IReviewTransactionsData,
  type IReviewTransaction,
} from "@/app/services/types";
import StatusChangeDialog from "../DataTable/StatusChangeDialog";

interface ITransactionsWaitingApprovalProps {
  initialReviewTransactions?: IReviewTransactionsData | null;
}

export const TransactionsWaitingApproval = ({
  initialReviewTransactions = null,
}: ITransactionsWaitingApprovalProps) => {
  const [reviewTransactions, setReviewTransactions] =
    useState<IReviewTransactionsData | null>(
      initialReviewTransactions ||
        dashboardService.getCurrentDashboardData()?.reviewTransactions ||
        null
    );
  const [statusDialogData, setStatusDialogData] = useState<{
    rowId: number;
    newStatus: string;
  } | null>(null);

  /**
   * Subscribe to dashboard data changes
   */
  useEffect(() => {
    const subscription = dashboardService
      .getDashboardData$()
      .subscribe(data => {
        if (data?.reviewTransactions) {
          setReviewTransactions(data.reviewTransactions);
        }
      });

    // Cleanup subscription on unmount
    return () => subscription.unsubscribe();
  }, []);

  /**
   * Format transaction for display
   */
  const formatTransaction = (tx: IReviewTransaction) => {
    const createdDate = tx.created || tx.modified || "";
    const formattedDate = createdDate
      ? formatToDateTimeString(createdDate)
      : "";

    return {
      id: tx.id ?? tx.external_id ?? "",
      user: tx.customer || "",
      created: formattedDate,
      type: tx.type || "",
      amount: tx.amount
        ? `${tx.amount < 0 ? "-" : ""}${Math.abs(tx.amount).toFixed(2)} ${tx.currency || ""}`
        : "",
      psp: tx.psp_id || "",
    };
  };

  const transactions = reviewTransactions?.transactions || [];
  const displayTransactions = transactions.map(formatTransaction);

  const handleStatusChange = (rowId: number, newStatus: string) => {
    setStatusDialogData({ rowId, newStatus });
  };

  return (
    <Paper elevation={3} className="transactions-waiting-approval">
      <Box sx={{ p: 3 }}>
        <Box sx={{ display: "flex", justifyContent: "space-between", mb: 2 }}>
          <Typography variant="h5" fontWeight="bold">
            Transactions Waiting for Approval
          </Typography>
          <Box>
            <Button variant="outlined">All Pending Withdrawals</Button>
            <IconButton size="small">
              <MoreVertIcon fontSize="small" />
            </IconButton>
          </Box>
        </Box>

        {reviewTransactions && (
          <TableContainer
            component={Paper}
            sx={{
              maxHeight: 400,
              overflow: "auto",
            }}
          >
            <Table>
              <TableHead>
                <TableRow>
                  <TableCell>
                    <strong>ID</strong>
                  </TableCell>
                  <TableCell>
                    <strong>User</strong>
                  </TableCell>
                  <TableCell>
                    <strong>Created</strong>
                  </TableCell>
                  <TableCell>
                    <strong>Type</strong>
                  </TableCell>
                  <TableCell>
                    <strong>Amount</strong>
                  </TableCell>
                  <TableCell>
                    <strong>PSP</strong>
                  </TableCell>
                  <TableCell>
                    <strong>Action</strong>
                  </TableCell>
                </TableRow>
              </TableHead>
              <TableBody>
                {displayTransactions.length > 0 ? (
                  displayTransactions.map((tx, i) => (
                    <TableRow key={`${tx.id}-${i}`}>
                      <TableCell>{tx.id}</TableCell>
                      <TableCell>{tx.user}</TableCell>
                      <TableCell>{tx.created}</TableCell>
                      <TableCell>{tx.type}</TableCell>
                      <TableCell>{tx.amount}</TableCell>
                      <TableCell>{tx.psp}</TableCell>
                      <TableCell>
                        <IconButton
                          color="success"
                          onClick={() => handleStatusChange(tx.id, "approved")}
                        >
                          <CheckCircleIcon />
                        </IconButton>
                        <IconButton
                          color="error"
                          onClick={() => handleStatusChange(tx.id, "declined")}
                        >
                          <CancelIcon />
                        </IconButton>
                      </TableCell>
                    </TableRow>
                  ))
                ) : (
                  <TableRow>
                    <TableCell colSpan={7} align="center">
                      <Typography variant="body2" color="text.secondary">
                        No transactions waiting for approval
                      </Typography>
                    </TableCell>
                  </TableRow>
                )}
              </TableBody>
            </Table>
          </TableContainer>
        )}
      </Box>
      <StatusChangeDialog
        open={Boolean(statusDialogData)}
        transactionId={statusDialogData?.rowId ?? undefined}
        newStatus={statusDialogData?.newStatus ?? ""}
        onClose={() => setStatusDialogData(null)}
      />
    </Paper>
  );
};