"use client";

import { ColumnDef } from "@tanstack/react-table";
import { AlertTriangle, Container, Eye } from "lucide-react";

import {
  ActionDropdown,
  ActionDropdownItem,
} from "@/components/shadcn/dropdown";
import { EntityInfo } from "@/components/shadcn/entities";
import { DataTableColumnHeader } from "@/components/shadcn/table";
import { getGroupLabel } from "@/lib/categories";
import { getRegionFlag } from "@/lib/region-flags";
import { ProviderType, ResourceProps } from "@/types";

const getResourceData = (
  row: { original: ResourceProps },
  field: keyof ResourceProps["attributes"],
) => {
  return row.original.attributes?.[field];
};

const getProviderData = (
  row: { original: ResourceProps },
  field: keyof ResourceProps["relationships"]["provider"]["data"]["attributes"],
) => {
  return (
    row.original.relationships?.provider?.data?.attributes?.[field] ??
    `No ${field} found in provider`
  );
};

const ResourceNameCell = ({ row }: { row: { original: ResourceProps } }) => {
  const resourceName = row.original.attributes?.name;
  const resourceUid = row.original.attributes?.uid;
  const entityAlias =
    typeof resourceName === "string" && resourceName.trim().length > 0
      ? resourceName
      : "Unnamed resource";

  return (
    <div className="max-w-[240px]">
      <EntityInfo
        nameIcon={<Container className="size-4" />}
        entityAlias={entityAlias}
        entityId={
          resourceUid && typeof resourceUid === "string"
            ? resourceUid
            : undefined
        }
      />
    </div>
  );
};

// Component for failed findings badge with warning style
const FailedFindingsBadge = ({ count }: { count: number }) => {
  if (count === 0) {
    return (
      <span className="inline-flex h-6 items-center justify-center rounded-full bg-green-100 px-2 text-xs font-semibold text-green-800 dark:bg-green-900/30 dark:text-green-400">
        0
      </span>
    );
  }

  return (
    <span className="inline-flex h-6 items-center gap-1 rounded-full bg-red-100 px-2 text-xs font-semibold text-red-800 dark:bg-red-900/30 dark:text-red-400">
      <AlertTriangle className="h-3 w-3" />
      {count}
    </span>
  );
};

interface GetColumnResourcesOptions {
  onViewDetails: (resource: ResourceProps) => void;
}

export function getColumnResources({
  onViewDetails,
}: GetColumnResourcesOptions): ColumnDef<ResourceProps>[] {
  return [
    // Name column
    {
      accessorKey: "resourceName",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Name" />
      ),
      cell: ({ row }) => <ResourceNameCell row={row} />,
      enableSorting: false,
    },
    // Provider Account column
    {
      accessorKey: "provider",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Provider" />
      ),
      cell: ({ row }) => {
        const provider = getProviderData(row, "provider");
        const alias = getProviderData(row, "alias");
        const uid = getProviderData(row, "uid");
        return (
          <EntityInfo
            cloudProvider={provider as ProviderType}
            entityAlias={alias && typeof alias === "string" ? alias : undefined}
            entityId={uid && typeof uid === "string" ? uid : undefined}
          />
        );
      },
      enableSorting: false,
    },
    // Failed Findings column
    {
      accessorKey: "failedFindings",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Failed Findings" />
      ),
      cell: ({ row }) => {
        const failedFindingsCount = getResourceData(
          row,
          "failed_findings_count",
        ) as number;

        return <FailedFindingsBadge count={failedFindingsCount ?? 0} />;
      },
      enableSorting: false,
    },
    // Group column
    {
      accessorKey: "groups",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Group" param="groups" />
      ),
      cell: ({ row }) => {
        const groups = getResourceData(row, "groups") as string[] | null;

        if (!groups || groups.length === 0) {
          return <p className="text-text-neutral-primary text-sm">-</p>;
        }

        const displayLabel = getGroupLabel(groups[0]);
        const extraCount = groups.length - 1;

        return (
          <div className="flex items-center gap-1">
            <p className="text-text-neutral-primary max-w-[120px] truncate text-sm">
              {displayLabel}
            </p>
            {extraCount > 0 && (
              <span className="text-text-neutral-secondary text-xs">
                +{extraCount}
              </span>
            )}
          </div>
        );
      },
      enableSorting: false,
    },
    // Type column
    {
      accessorKey: "type",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Type" param="type" />
      ),
      cell: ({ row }) => {
        const type = getResourceData(row, "type");

        return (
          <p className="text-text-neutral-primary max-w-[150px] truncate text-sm">
            {typeof type === "string" ? type : "-"}
          </p>
        );
      },
    },
    // Region column
    {
      accessorKey: "region",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Region" param="region" />
      ),
      cell: ({ row }) => {
        const region = getResourceData(row, "region");
        const regionText = typeof region === "string" ? region : "-";
        const regionFlag =
          typeof region === "string" ? getRegionFlag(region) : "";

        return (
          <span className="text-text-neutral-primary flex max-w-[140px] items-center gap-1.5 truncate text-sm">
            {regionFlag && (
              <span className="translate-y-px text-base leading-none">
                {regionFlag}
              </span>
            )}
            <span className="truncate">{regionText}</span>
          </span>
        );
      },
    },
    // Service column
    {
      accessorKey: "service",
      header: ({ column }) => (
        <DataTableColumnHeader
          column={column}
          title="Service"
          param="service"
        />
      ),
      cell: ({ row }) => {
        const service = getResourceData(row, "service");

        return (
          <p className="text-text-neutral-primary max-w-[150px] truncate text-sm">
            {typeof service === "string" ? service : "-"}
          </p>
        );
      },
    },
    // Actions column
    {
      id: "actions",
      header: () => <div className="w-10" />,
      cell: ({ row }) => (
        <div
          className="flex items-center justify-end"
          onClick={(event) => event.stopPropagation()}
        >
          <ActionDropdown ariaLabel="Resource actions">
            <ActionDropdownItem
              icon={<Eye className="size-5" />}
              label="View Details"
              onSelect={() => onViewDetails(row.original)}
            />
          </ActionDropdown>
        </div>
      ),
      enableSorting: false,
    },
  ];
}