/**
 * @ai-summary Mobile admin screen for community station reviews
 */

import React, { useState } from 'react';
import { Navigate } from 'react-router-dom';
import {
  Box,
  Select,
  MenuItem,
  FormControl,
  InputLabel,
} from '@mui/material';
import { MobileContainer } from '../../../shared-minimal/components/mobile/MobileContainer';
import { useAdminAccess } from '../../../core/auth/useAdminAccess';
import { CommunityStationReviewQueue } from '../components/CommunityStationReviewQueue';
import { CommunityStationsList } from '../../stations/components/CommunityStationsList';
import {
  usePendingSubmissions,
  useAllCommunitySubmissions,
  useReviewStation,
} from '../../stations/hooks/useCommunityStations';
import toast from 'react-hot-toast';

type TabType = 'pending' | 'all';

/**
 * Mobile admin screen for reviewing community station submissions
 * Touch-friendly layout with tab navigation
 */
export const AdminCommunityStationsMobileScreen: React.FC = () => {
  const { isAdmin, loading } = useAdminAccess();
  const [activeTab, setActiveTab] = useState<TabType>('pending');
  const [statusFilter, setStatusFilter] = useState<string>('');
  const [page, setPage] = useState(0);

  // Hooks
  const pendingSubmissions = usePendingSubmissions(page, 20);
  const allSubmissions = useAllCommunitySubmissions(statusFilter || undefined, page, 20);
  const reviewMutation = useReviewStation();

  if (loading) {
    return (
      <MobileContainer>
        <div className="flex items-center justify-center min-h-[400px]">
          <div className="text-center">
            <div className="text-slate-500 mb-2">Loading admin access...</div>
            <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600 mx-auto"></div>
          </div>
        </div>
      </MobileContainer>
    );
  }

  if (!isAdmin) {
    return <Navigate to="/garage/settings" replace />;
  }

  // Handle approval
  const handleApprove = async (id: string) => {
    try {
      await reviewMutation.mutateAsync({
        id,
        decision: { status: 'approved' },
      });
      toast.success('Station approved');
    } catch (error: any) {
      toast.error(error?.response?.data?.message || 'Failed to approve station');
    }
  };

  // Handle rejection
  const handleReject = async (id: string, reason: string) => {
    try {
      await reviewMutation.mutateAsync({
        id,
        decision: { status: 'rejected', rejectionReason: reason },
      });
      toast.success('Station rejected');
    } catch (error: any) {
      toast.error(error?.response?.data?.message || 'Failed to reject station');
    }
  };

  const displayData = activeTab === 'pending' ? pendingSubmissions : allSubmissions;
  const stations = displayData.data?.stations || [];
  const totalPages = displayData.data?.total ? Math.ceil(displayData.data.total / 20) : 1;

  return (
    <MobileContainer>
      <div className="space-y-4 pb-20 p-4">
        {/* Header */}
        <div className="text-center mb-6">
          <h1 className="text-2xl font-bold text-slate-800">Community Station Reviews</h1>
          <p className="text-slate-500 mt-1">Review user-submitted gas stations</p>
        </div>

        {/* Tab navigation */}
        <Box sx={{ display: 'flex', gap: 1, mb: 2 }}>
          <button
            onClick={() => {
              setActiveTab('pending');
              setPage(0);
            }}
            className={`flex-1 py-2 px-3 rounded-lg font-medium transition ${
              activeTab === 'pending'
                ? 'bg-blue-600 text-white'
                : 'bg-slate-100 text-slate-600'
            }`}
          >
            Pending ({pendingSubmissions.data?.total || 0})
          </button>
          <button
            onClick={() => {
              setActiveTab('all');
              setPage(0);
            }}
            className={`flex-1 py-2 px-3 rounded-lg font-medium transition ${
              activeTab === 'all'
                ? 'bg-blue-600 text-white'
                : 'bg-slate-100 text-slate-600'
            }`}
          >
            All
          </button>
        </Box>

        {/* Status filter for all tab */}
        {activeTab === 'all' && (
          <FormControl fullWidth size="small" sx={{ mb: 2 }}>
            <InputLabel>Filter by Status</InputLabel>
            <Select
              value={statusFilter}
              label="Filter by Status"
              onChange={(e) => {
                setStatusFilter(e.target.value);
                setPage(0);
              }}
            >
              <MenuItem value="">All</MenuItem>
              <MenuItem value="pending">Pending</MenuItem>
              <MenuItem value="approved">Approved</MenuItem>
              <MenuItem value="rejected">Rejected</MenuItem>
            </Select>
          </FormControl>
        )}

        {/* Content */}
        {activeTab === 'pending' ? (
          <CommunityStationReviewQueue
            stations={stations}
            loading={displayData.isLoading}
            error={displayData.error ? 'Failed to load submissions' : null}
            onApprove={handleApprove}
            onReject={handleReject}
            page={page}
            onPageChange={setPage}
            totalPages={totalPages}
            isReviewLoading={reviewMutation.isPending}
          />
        ) : (
          <CommunityStationsList
            stations={stations}
            loading={displayData.isLoading}
            error={displayData.error ? 'Failed to load submissions' : null}
            isAdmin={true}
            onApprove={handleApprove}
            onReject={handleReject}
            page={page}
            onPageChange={setPage}
            totalPages={totalPages}
          />
        )}
      </div>
    </MobileContainer>
  );
};

export default AdminCommunityStationsMobileScreen;