import { useMemo } from 'react';
import type { ReactNode } from 'react';
import { ActionIcon, Group, Text } from '@mantine/core';
import {
  Building2,
  Eye,
  MapPin,
  Package,
  Pencil,
  Scale,
  Warehouse as WarehouseIcon,
} from 'lucide-react';
import { DataTable, type ColumnDef } from '@edr/ui-common';

import { useQuery } from '@tanstack/react-query';

import { bookingTable } from '@/components/bookings/booking-ui.styles';
import { api } from '@/services/api';
import type { Warehouse } from '@/types/warehouse';
import { WarehouseStatusBadge, WarehouseTypeBadge } from './badges';
import { formatCapacity } from './options';

interface WarehouseTableProps {
  warehouses: Warehouse[];
  onView: (warehouse: Warehouse) => void;
  onEdit: (warehouse: Warehouse) => void;
}

const HEADER = bookingTable.headerCell;

function CapacityCell({
  current,
  capacity,
  icon,
}: {
  current?: number | null;
  capacity?: number | null;
  icon: ReactNode;
}) {
  const numericCurrent = Number(current) || 0;
  const numericCapacity = Number(capacity) || 0;
  const hasCapacity = numericCapacity > 0;
  const ratio = hasCapacity ? Math.min(100, Math.max(0, (numericCurrent / numericCapacity) * 100)) : 0;
  const isOverCapacity = hasCapacity && numericCurrent > numericCapacity;

  return (
    <div className="min-w-[8rem] space-y-2 py-1">
      <div className="flex items-center gap-2 text-sm font-medium text-foreground">
        <span className="flex size-7 shrink-0 items-center justify-center rounded-lg border border-border/50 bg-background/70 text-muted-foreground">
          {icon}
        </span>
        <span className="whitespace-nowrap">{formatCapacity(numericCurrent, capacity)}</span>
      </div>
      {hasCapacity ? (
        <div className="h-1.5 overflow-hidden rounded-full bg-muted/50">
          <div
            className={isOverCapacity ? 'h-full rounded-full bg-red-500' : 'h-full rounded-full bg-edr-green'}
            style={{ width: `${ratio}%` }}
          />
        </div>
      ) : null}
    </div>
  );
}

export function WarehouseTable({ warehouses, onView, onEdit }: WarehouseTableProps) {
  const { data: stations } = useQuery(
    api.stations.list.queryOptions({ staleTime: 5 * 60 * 1000 }),
  );
  const stationNameById = useMemo(
    () => new Map((stations ?? []).map((s) => [s.id, s.name])),
    [stations],
  );

  const columns: ColumnDef<Warehouse>[] = [
    {
      id: 'code',
      header: () => <span className={HEADER}>Warehouse</span>,
      cell: ({ row }) => (
        <div className="flex min-w-[11rem] items-center gap-3 py-1.5">
          <div className={bookingTable.rowIcon}>
            <WarehouseIcon className="size-4" strokeWidth={1.75} />
          </div>
          <div className="min-w-0">
            <button
              type="button"
              className="block max-w-full truncate text-left text-sm font-semibold text-edr-green transition-colors hover:text-edr-green/80"
              onClick={(e) => {
                e.stopPropagation();
                onView(row.original);
              }}
            >
              {row.original.code}
            </button>
            <p className="mt-0.5 truncate text-xs text-muted-foreground">
              {row.original.name}
            </p>
          </div>
        </div>
      ),
    },
    {
      id: 'facility',
      header: () => <span className={HEADER}>Facility</span>,
      cell: ({ row }) => {
        const name = row.original.stationId
          ? stationNameById.get(row.original.stationId)
          : undefined;
        return name ? (
          <div className="flex min-w-[9rem] items-center gap-2 py-1 text-sm font-medium text-foreground">
            <Building2 className="size-4 shrink-0 text-muted-foreground" />
            <span className="truncate">{name}</span>
          </div>
        ) : (
          <Text size="sm" c="dimmed">
            -
          </Text>
        );
      },
    },
    {
      id: 'type',
      header: () => <span className={HEADER}>Type</span>,
      cell: ({ row }) => (
        <div className="py-1">
          <WarehouseTypeBadge type={row.original.type} />
        </div>
      ),
    },
    {
      id: 'location',
      header: () => <span className={HEADER}>Location</span>,
      cell: ({ row }) => (
        <div className="flex min-w-[10rem] items-center gap-2 py-1 text-sm text-foreground">
          <MapPin className="size-4 shrink-0 text-muted-foreground" />
          <span className="truncate">{row.original.locationName ?? '-'}</span>
        </div>
      ),
    },
    {
      id: 'weight',
      header: () => <span className={HEADER}>Weight</span>,
      cell: ({ row }) => (
        <CapacityCell
          current={row.original.currentWeight}
          capacity={row.original.capacityWeight}
          icon={<Scale className="size-3.5" />}
        />
      ),
    },
    {
      id: 'containers',
      header: () => <span className={HEADER}>Containers</span>,
      cell: ({ row }) => (
        <CapacityCell
          current={row.original.currentContainers}
          capacity={row.original.capacityContainers}
          icon={<Package className="size-3.5" />}
        />
      ),
    },
    {
      id: 'status',
      header: () => <span className={HEADER}>Status</span>,
      cell: ({ row }) => (
        <div className="py-1">
          <WarehouseStatusBadge status={row.original.status} />
        </div>
      ),
    },
    {
      id: 'actions',
      header: '',
      cell: ({ row }) => (
        <Group gap="xs" justify="flex-end" wrap="nowrap" onClick={(e) => e.stopPropagation()}>
          <ActionIcon variant="subtle" color="gray" onClick={() => onView(row.original)} title="View">
            <Eye size={16} />
          </ActionIcon>
          <ActionIcon variant="subtle" color="gray" onClick={() => onEdit(row.original)} title="Edit">
            <Pencil size={16} />
          </ActionIcon>
        </Group>
      ),
      },
  ];

  return (
    <DataTable
      columns={columns}
      data={warehouses}
      status="success"
      onRowClick={(warehouse) => onView(warehouse)}
      emptyMessage="No warehouses found."
      containerClassName="border-0 bg-transparent shadow-none"
    />
  );
}