"use client";

import { ColumnDef, RowSelectionState } from "@tanstack/react-table";
import { ChevronRight } from "lucide-react";

import { Checkbox } from "@/components/shadcn";
import {
  DataTableColumnHeader,
  SeverityBadge,
  StatusFindingBadge,
} from "@/components/shadcn/table";
import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
} from "@/components/shadcn/tooltip";
import { cn } from "@/lib";
import {
  canDrillDownFindingGroup,
  getFilteredFindingGroupDelta,
  getFindingGroupImpactedCounts,
  isFindingGroupMuted,
} from "@/lib/findings-groups";
import { FindingGroupRow } from "@/types";
import { getProviderDisplayName } from "@/types/providers";

import { DataTableRowActions } from "./data-table-row-actions";
import { canMuteFindingGroup } from "./finding-group-selection";
import { ImpactedResourcesCell } from "./impacted-resources-cell";
import { NotificationIndicator } from "./notification-indicator";
import { ProviderIconCell } from "./provider-icon-cell";

interface GetColumnFindingGroupsOptions {
  rowSelection: RowSelectionState;
  selectableRowCount: number;
  onDrillDown: (checkId: string, group: FindingGroupRow) => void;
  expandedCheckId?: string | null;
  /** True when the expanded group has individually selected resources */
  hasResourceSelection?: boolean;
  /** Active URL filters — used to make the delta indicator status-aware */
  filters?: Record<string, string | string[] | undefined>;
}

const VISIBLE_DISABLED_CHECKBOX_CLASS =
  "disabled:opacity-100 disabled:bg-bg-input-primary/60 disabled:border-border-input-primary/70";

export function getColumnFindingGroups({
  rowSelection,
  selectableRowCount,
  onDrillDown,
  expandedCheckId,
  hasResourceSelection = false,
  filters = {},
}: GetColumnFindingGroupsOptions): ColumnDef<FindingGroupRow>[] {
  const selectedCount = Object.values(rowSelection).filter(Boolean).length;
  const isAllSelected =
    selectedCount > 0 && selectedCount === selectableRowCount;
  const isSomeSelected =
    selectedCount > 0 && selectedCount < selectableRowCount;

  return [
    // Combined column: notification + expand toggle + checkbox
    {
      id: "select",
      header: ({ table }) => {
        const headerChecked = isAllSelected
          ? true
          : isSomeSelected
            ? "indeterminate"
            : false;

        return (
          <div className="flex items-center gap-2">
            <div className="w-2" />
            <div className="w-4" />
            <Checkbox
              size="sm"
              className={VISIBLE_DISABLED_CHECKBOX_CLASS}
              checked={headerChecked}
              onCheckedChange={(checked) =>
                table.toggleAllPageRowsSelected(checked === true)
              }
              onClick={(e) => e.stopPropagation()}
              aria-label="Select all"
              disabled={selectableRowCount === 0}
            />
          </div>
        );
      },
      cell: ({ row }) => {
        const group = row.original;
        const allMuted = isFindingGroupMuted(group);
        const isExpanded = expandedCheckId === group.checkId;
        const deltaKey = getFilteredFindingGroupDelta(group, filters);
        const canExpand = canDrillDownFindingGroup(group);
        const canSelect = canMuteFindingGroup({
          resourcesFail: group.resourcesFail,
          resourcesTotal: group.resourcesTotal,
          muted: group.muted,
          mutedCount: group.mutedCount,
        });

        return (
          <div className="flex items-center gap-2">
            <NotificationIndicator
              delta={deltaKey}
              isMuted={allMuted}
              showDeltaWhenMuted
            />
            {canExpand ? (
              <button
                type="button"
                aria-label={`Expand ${group.checkTitle}`}
                className="hover:bg-bg-neutral-tertiary flex size-4 shrink-0 items-center justify-center rounded-md transition-colors"
                onClick={() => onDrillDown(group.checkId, group)}
              >
                <ChevronRight
                  className={cn(
                    "text-text-neutral-secondary size-4 transition-transform duration-200",
                    isExpanded && "rotate-90",
                  )}
                />
              </button>
            ) : (
              <div className="size-4 shrink-0" />
            )}
            <Checkbox
              size="sm"
              className={VISIBLE_DISABLED_CHECKBOX_CLASS}
              checked={
                rowSelection[row.id] && isExpanded && hasResourceSelection
                  ? "indeterminate"
                  : !!rowSelection[row.id]
              }
              disabled={!canSelect}
              onCheckedChange={(checked) => {
                // When indeterminate (resources selected), clicking deselects the group
                if (
                  rowSelection[row.id] &&
                  isExpanded &&
                  hasResourceSelection
                ) {
                  row.toggleSelected(false);
                } else {
                  row.toggleSelected(checked === true);
                }
              }}
              onClick={(e) => e.stopPropagation()}
              aria-label="Select row"
            />
          </div>
        );
      },
      enableSorting: false,
      enableHiding: false,
    },
    // Status column — not sortable on finding-groups endpoint
    {
      accessorKey: "status",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Status" />
      ),
      cell: ({ row }) => {
        return <StatusFindingBadge status={row.original.status} />;
      },
      enableSorting: false,
    },
    // Finding title column
    {
      accessorKey: "finding",
      header: ({ column }) => (
        <DataTableColumnHeader
          column={column}
          title="Finding Groups"
          param="check_id"
        />
      ),
      cell: ({ row }) => {
        const group = row.original;
        const canExpand = canDrillDownFindingGroup(group);
        const provider = group.providers[0];
        const providerName = provider
          ? getProviderDisplayName(provider)
          : undefined;

        return (
          <div className="flex items-center gap-2">
            {provider && providerName ? (
              <Tooltip>
                <TooltipTrigger asChild>
                  <div className="shrink-0">
                    <ProviderIconCell
                      provider={provider}
                      size={20}
                      className="size-5 rounded-none bg-transparent"
                    />
                  </div>
                </TooltipTrigger>
                <TooltipContent side="top">{providerName}</TooltipContent>
              </Tooltip>
            ) : null}
            {/* Single line always: min room to stay readable, ellipsis beyond
                the max, full title in the tooltip. */}
            <div className="min-w-0">
              <Tooltip>
                <TooltipTrigger asChild>
                  {canExpand ? (
                    <button
                      type="button"
                      className="text-text-neutral-primary hover:text-button-tertiary block max-w-[500px] min-w-[120px] cursor-pointer truncate border-none bg-transparent p-0 text-left text-sm hover:underline"
                      onClick={() => onDrillDown(group.checkId, group)}
                    >
                      {group.checkTitle}
                    </button>
                  ) : (
                    <span className="text-text-neutral-primary block max-w-[500px] min-w-[120px] truncate text-left text-sm">
                      {group.checkTitle}
                    </span>
                  )}
                </TooltipTrigger>
                <TooltipContent side="top" maxWidth="md">
                  {group.checkTitle}
                </TooltipContent>
              </Tooltip>
            </div>
          </div>
        );
      },
    },
    // Severity column
    {
      accessorKey: "severity",
      header: ({ column }) => (
        <DataTableColumnHeader
          column={column}
          title="Severity"
          param="severity"
        />
      ),
      cell: ({ row }) => <SeverityBadge severity={row.original.severity} />,
    },
    // Impacted Resources column
    {
      id: "impactedResources",
      header: ({ column }) => (
        <DataTableColumnHeader column={column} title="Impacted Resources" />
      ),
      cell: ({ row }) => {
        const group = row.original;
        const counts = getFindingGroupImpactedCounts(group);
        return (
          <ImpactedResourcesCell
            impacted={counts.impacted}
            total={counts.total}
          />
        );
      },
      enableSorting: false,
    },
    // Actions column
    {
      id: "actions",
      header: () => <div className="w-10" />,
      cell: ({ row }) => <DataTableRowActions row={row} />,
      enableSorting: false,
    },
  ];
}