"use client";

import { useState, useEffect, useMemo } from "react";
import { formatDate } from "~/lib/format.js";
import { trpc } from "~/lib/trpc/client.js";
import { AllocationModal } from "./AllocationModal.js";
import type { AllocationLike, AllocationReadModel, AllocationWithDetails, ColumnDef } from "@planarchy/shared";
import { AllocationStatus, ALLOCATION_COLUMNS } from "@planarchy/shared";
import { useSelection } from "~/hooks/useSelection.js";
import { BatchActionBar } from "~/components/ui/BatchActionBar.js";
import { ConfirmDialog } from "~/components/ui/ConfirmDialog.js";
import { FilterBar } from "~/components/ui/FilterBar.js";
import { FilterChips } from "~/components/ui/FilterChips.js";
import { ResourceCombobox } from "~/components/ui/ResourceCombobox.js";
import { ProjectCombobox } from "~/components/ui/ProjectCombobox.js";
import { ColumnTogglePanel } from "~/components/ui/ColumnTogglePanel.js";
import { SortableColumnHeader } from "~/components/ui/SortableColumnHeader.js";
import { useTableSort } from "~/hooks/useTableSort.js";
import { usePermissions } from "~/hooks/usePermissions.js";
import { useColumnConfig } from "~/hooks/useColumnConfig.js";
import { useViewPrefs } from "~/hooks/useViewPrefs.js";
import { getPlanningEntryMutationId } from "~/lib/planningEntryIds.js";

const STATUS_BADGE: Record<string, string> = {
  ACTIVE: "bg-green-100 text-green-700 dark:bg-green-900/30 dark:text-green-400",
  PROPOSED: "bg-yellow-100 text-yellow-700 dark:bg-yellow-900/30 dark:text-yellow-400",
  CONFIRMED: "bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400",
  COMPLETED: "bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-400",
  CANCELLED: "bg-red-100 text-red-600 dark:bg-red-900/30 dark:text-red-400",
};

const ALL_ALLOC_STATUSES = [
  { value: "PROPOSED", label: "Proposed" },
  { value: "CONFIRMED", label: "Confirmed" },
  { value: "ACTIVE", label: "Active" },
  { value: "COMPLETED", label: "Completed" },
  { value: "CANCELLED", label: "Cancelled" },
] as const;

type AllocationAssignmentsView = AllocationReadModel<AllocationLike>;
type DemandRow = AllocationWithDetails & {
  sourceAllocationId?: string;
  requestedHeadcount?: number;
  unfilledHeadcount?: number;
};

export function AllocationsClient() {
  const [modalOpen, setModalOpen] = useState(false);
  const [editingAllocation, setEditingAllocation] = useState<AllocationWithDetails | null>(null);
  const [filterProjectId, setFilterProjectId] = useState<string>("");
  const [filterResourceId, setFilterResourceId] = useState<string>("");
  const [filterStatus, setFilterStatus] = useState<string>("");
  const [hidePastProjects, setHidePastProjects] = useState(true);
  const [hideCompletedProjects, setHideCompletedProjects] = useState(true);
  const [hideDraftProjects, setHideDraftProjects] = useState(false);
  const [confirmDelete, setConfirmDelete] = useState<{ single?: AllocationWithDetails; ids?: string[] } | null>(null);
  const [batchStatusPicker, setBatchStatusPicker] = useState(false);
  const [confirmBatchStatus, setConfirmBatchStatus] = useState<{ ids: string[]; status: string } | null>(null);

  const selection = useSelection();
  const utils = trpc.useUtils();
  const { canViewCosts } = usePermissions();

  // ─── Column visibility ────────────────────────────────────────────────────
  const baseColumns = useMemo<ColumnDef[]>(
    () => (canViewCosts ? ALLOCATION_COLUMNS : ALLOCATION_COLUMNS.filter((c) => c.key !== "cost")),
    [canViewCosts],
  );
  const { allColumns, visibleColumns, visibleKeys, setVisible } = useColumnConfig("allocations", baseColumns);
  const defaultKeys = useMemo(() => baseColumns.filter((c) => c.defaultVisible).map((c) => c.key), [baseColumns]);

  const { data: allocationView, isLoading } = trpc.allocation.listView.useQuery(
    {
      projectId: filterProjectId || undefined,
      resourceId: filterResourceId || undefined,
      status: (filterStatus as AllocationStatus) || undefined,
    },
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    { placeholderData: (prev: any) => prev, staleTime: 15_000 },
  ) as { data: AllocationAssignmentsView | undefined; isLoading: boolean };

  const deleteDemandMutation = trpc.allocation.deleteDemandRequirement.useMutation({
    onSuccess: async () => {
      await utils.allocation.list.invalidate();
      await utils.allocation.listView.invalidate();
    },
  });

  const deleteAssignmentMutation = trpc.allocation.deleteAssignment.useMutation({
    onSuccess: async () => {
      await utils.allocation.list.invalidate();
      await utils.allocation.listView.invalidate();
    },
  });

  const batchDeleteMutation = trpc.allocation.batchDelete.useMutation({
    onSuccess: async () => {
      await utils.allocation.list.invalidate();
      await utils.allocation.listView.invalidate();
      selection.clear();
    },
  });

  const batchStatusMutation = trpc.allocation.batchUpdateStatus.useMutation({
    onSuccess: async () => {
      await utils.allocation.list.invalidate();
      await utils.allocation.listView.invalidate();
      selection.clear();
    },
  });

  useEffect(() => {
    selection.clear();
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [filterProjectId, filterResourceId, filterStatus, hidePastProjects, hideCompletedProjects, hideDraftProjects]);

  function openCreate() {
    setEditingAllocation(null);
    setModalOpen(true);
  }

  function openEdit(alloc: AllocationWithDetails) {
    setEditingAllocation(alloc);
    setModalOpen(true);
  }

  function closeModal() {
    setModalOpen(false);
    setEditingAllocation(null);
  }

  const assignmentList = (allocationView?.assignments ?? []) as unknown as AllocationWithDetails[];
  const demandList = (allocationView?.demands ?? []) as unknown as DemandRow[];

  const today = new Date();
  today.setHours(0, 0, 0, 0);

  const filteredAllocations = assignmentList.filter((alloc) => {
    if (hidePastProjects && alloc.project?.endDate && new Date(alloc.project.endDate) < today) return false;
    if (hideCompletedProjects && alloc.project?.status && ["COMPLETED", "CANCELLED"].includes(alloc.project.status)) return false;
    if (hideDraftProjects && alloc.project?.status === "DRAFT") return false;
    return true;
  });

  const filteredDemands = demandList.filter((alloc) => {
    if (filterResourceId) return false;
    if (hidePastProjects && alloc.project?.endDate && new Date(alloc.project.endDate) < today) return false;
    if (hideCompletedProjects && alloc.project?.status && ["COMPLETED", "CANCELLED"].includes(alloc.project.status)) return false;
    if (hideDraftProjects && alloc.project?.status === "DRAFT") return false;
    return true;
  });

  const allocViewPrefs = useViewPrefs("allocations");
  const { sorted, sortField, sortDir, toggle } = useTableSort(filteredAllocations, {
    initialField: allocViewPrefs.savedSort?.field ?? null,
    initialDir: allocViewPrefs.savedSort?.dir ?? null,
    onSortChange: (field, dir) => {
      allocViewPrefs.setSavedSort(field && dir ? { field, dir } : null);
    },
  });
  const allocationIds = sorted.map((a) => a.id);
  const allocationMutationIdsByDisplayId = useMemo(
    () =>
      new Map(
        sorted.map((allocation) => [allocation.id, getPlanningEntryMutationId(allocation)]),
      ),
    [sorted],
  );
  const selectedMutationIds = useMemo(
    () =>
      selection.selectedArray.flatMap((displayId) => {
        const mutationId = allocationMutationIdsByDisplayId.get(displayId);
        return mutationId ? [mutationId] : [];
      }),
    [allocationMutationIdsByDisplayId, selection.selectedArray],
  );

  function handleSort(field: string) {
    if (field === "resource") {
      toggle("resource", (a) => a.resource?.displayName ?? null);
    } else if (field === "project") {
      toggle("project", (a) => a.project?.name ?? null);
    } else {
      toggle(field);
    }
  }

  function clearAll() {
    setFilterProjectId("");
    setFilterResourceId("");
    setFilterStatus("");
    setHidePastProjects(false);
    setHideCompletedProjects(false);
    setHideDraftProjects(false);
  }

  const chips = [
    ...(filterProjectId ? [{ label: `Project filter active`, onRemove: () => setFilterProjectId("") }] : []),
    ...(filterResourceId ? [{ label: `Resource filter active`, onRemove: () => setFilterResourceId("") }] : []),
    ...(filterStatus ? [{ label: `Status: ${filterStatus}`, onRemove: () => setFilterStatus("") }] : []),
    ...(hidePastProjects ? [{ label: "Hiding past projects", onRemove: () => setHidePastProjects(false) }] : []),
    ...(hideCompletedProjects ? [{ label: "Hiding completed/cancelled", onRemove: () => setHideCompletedProjects(false) }] : []),
    ...(hideDraftProjects ? [{ label: "Hiding draft projects", onRemove: () => setHideDraftProjects(false) }] : []),
  ];

  function formatPeriod(alloc: AllocationWithDetails) {
    return formatDate(alloc.startDate) + " \u2192 " + formatDate(alloc.endDate);
  }

  function handleSingleDelete(allocation: AllocationWithDetails) {
    const id = getPlanningEntryMutationId(allocation);

    if (!allocation.resourceId) {
      deleteDemandMutation.mutate({ id });
      return;
    }

    deleteAssignmentMutation.mutate({ id });
  }

  const singleDeletePending = deleteDemandMutation.isPending || deleteAssignmentMutation.isPending;

  return (
    <div className="p-6 pb-24">
      {/* Page header */}
      <div className="mb-6 flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold text-gray-900 dark:text-gray-100">Allocations</h1>
          <p className="text-gray-500 dark:text-gray-400 text-sm mt-1">
            {isLoading
              ? "Loading…"
              : `${filteredAllocations.length} assignment${filteredAllocations.length !== 1 ? "s" : ""}${filteredDemands.length > 0 ? ` · ${filteredDemands.length} open demand${filteredDemands.length !== 1 ? "s" : ""}` : ""}`}
          </p>
        </div>
        <div className="flex items-center gap-2">
          <a
            href="/api/reports/allocations"
            target="_blank"
            rel="noopener noreferrer"
            className="px-3 py-1.5 text-sm rounded-lg border border-gray-200 dark:border-gray-700 text-gray-600 dark:text-gray-400 hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors flex items-center gap-2"
          >
            ↓ PDF
          </a>
          <a
            href="/api/reports/allocations?format=xlsx"
            download
            className="px-3 py-1.5 text-sm rounded-lg border border-gray-200 dark:border-gray-700 text-gray-600 dark:text-gray-400 hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors flex items-center gap-2"
          >
            ↓ XLS
          </a>
          <button
            type="button"
            onClick={openCreate}
            className="px-4 py-2 bg-brand-600 text-white rounded-lg hover:bg-brand-700 text-sm font-medium disabled:opacity-50"
          >
            New Planning Entry
          </button>
        </div>
      </div>

      {/* Filters */}
      <FilterBar>
        <ProjectCombobox
          value={filterProjectId || null}
          onChange={(id) => setFilterProjectId(id ?? "")}
          placeholder="Filter by project…"
          className="min-w-[280px]"
        />

        <ResourceCombobox
          value={filterResourceId || null}
          onChange={(id) => setFilterResourceId(id ?? "")}
          placeholder="Filter by resource…"
          className="min-w-[180px]"
        />

        <select
          value={filterStatus}
          onChange={(e) => setFilterStatus(e.target.value)}
          className="px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-lg focus:outline-none focus:ring-2 focus:ring-brand-500 text-sm bg-white dark:bg-gray-900 dark:text-gray-100"
        >
          <option value="">All Statuses</option>
          {ALL_ALLOC_STATUSES.map((s) => (
            <option key={s.value} value={s.value}>{s.label}</option>
          ))}
        </select>

        <label className="flex items-center gap-1.5 text-sm text-gray-600 dark:text-gray-400 cursor-pointer whitespace-nowrap">
          <input
            type="checkbox"
            checked={hidePastProjects}
            onChange={(e) => setHidePastProjects(e.target.checked)}
            className="rounded border-gray-300 dark:border-gray-600"
          />
          Hide past
        </label>

        <label className="flex items-center gap-1.5 text-sm text-gray-600 dark:text-gray-400 cursor-pointer whitespace-nowrap">
          <input
            type="checkbox"
            checked={hideCompletedProjects}
            onChange={(e) => setHideCompletedProjects(e.target.checked)}
            className="rounded border-gray-300 dark:border-gray-600"
          />
          Hide completed
        </label>

        <label className="flex items-center gap-1.5 text-sm text-gray-600 dark:text-gray-400 cursor-pointer whitespace-nowrap">
          <input
            type="checkbox"
            checked={hideDraftProjects}
            onChange={(e) => setHideDraftProjects(e.target.checked)}
            className="rounded border-gray-300 dark:border-gray-600"
          />
          Hide drafts
        </label>
        <ColumnTogglePanel
          allColumns={allColumns}
          visibleKeys={visibleKeys}
          onSetVisible={setVisible}
          defaultKeys={defaultKeys}
        />
      </FilterBar>

      {/* Filter chips */}
      {chips.length > 0 && (
        <div className="mb-3">
          <FilterChips chips={chips} onClearAll={clearAll} />
        </div>
      )}

      {/* Table */}
      <div className="bg-white dark:bg-gray-800 rounded-xl border border-gray-200 dark:border-gray-700 overflow-hidden">
        <table className="w-full">
          <thead className="bg-gray-50 dark:bg-gray-900 border-b border-gray-200 dark:border-gray-700">
            <tr>
              <th className="px-4 py-3 w-10">
                <input
                  type="checkbox"
                  checked={selection.isAllSelected(allocationIds)}
                  ref={(el) => {
                    if (el) el.indeterminate = selection.isIndeterminate(allocationIds);
                  }}
                  onChange={() => selection.toggleAll(allocationIds)}
                  className="rounded border-gray-300 dark:border-gray-600"
                />
              </th>
              {visibleColumns.map((col) => {
                const tooltips: Record<string, { tip: string; width?: string }> = {
                  role: { tip: "The role this allocation was created for. May differ from the resource's primary role." },
                  hoursPerDay: { tip: "Planned working hours per calendar day for this allocation." },
                  cost: { tip: "Resource LCR × hours per day. Reflects the cost of one day of work for this allocation." },
                  status: { tip: "PROPOSED = requested · CONFIRMED = approved · ACTIVE = ongoing · COMPLETED = finished · CANCELLED = removed.", width: "w-72" },
                };
                const t = tooltips[col.key];
                const fieldMap: Record<string, string> = { dates: "startDate", hoursPerDay: "hoursPerDay", cost: "dailyCostCents" };
                return (
                  <SortableColumnHeader
                    key={col.key}
                    label={col.label}
                    field={fieldMap[col.key] ?? col.key}
                    sortField={sortField}
                    sortDir={sortDir}
                    onSort={handleSort}
                    {...(t?.tip ? { tooltip: t.tip } : {})}
                    {...(t?.width ? { tooltipWidth: t.width } : {})}
                  />
                );
              })}
              <th className="px-4 py-3" />
            </tr>
          </thead>
          <tbody className="divide-y divide-gray-100 dark:divide-gray-700">
            {isLoading && (
              <tr>
                <td colSpan={9} className="text-center py-12 text-gray-400 dark:text-gray-500 text-sm">Loading allocations…</td>
              </tr>
            )}

            {!isLoading && sorted.length === 0 && (
              <tr>
                <td colSpan={9} className="text-center py-12 text-gray-500 dark:text-gray-400 text-sm">No assignments found.</td>
              </tr>
            )}

            {!isLoading &&
              sorted.map((alloc) => {
                const isSelected = selection.selectedIds.has(alloc.id);
                return (
                  <tr key={alloc.id} className={`hover:bg-gray-50 dark:hover:bg-gray-700/50 transition-colors ${isSelected ? "bg-brand-50 dark:bg-brand-900/20" : ""}`}>
                    <td className="px-4 py-3">
                      <input
                        type="checkbox"
                        checked={isSelected}
                        onChange={() => selection.toggle(alloc.id)}
                        className="rounded border-gray-300 dark:border-gray-600"
                      />
                    </td>
                    {visibleColumns.map((col) => {
                      switch (col.key) {
                        case "resource":
                          return <td key={col.key} className="px-4 py-3 text-sm font-medium text-gray-900 dark:text-gray-100">{alloc.resource?.displayName ?? "—"}</td>;
                        case "project":
                          return (
                            <td key={col.key} className="px-4 py-3 text-sm text-gray-600 dark:text-gray-400">
                              {alloc.project ? (
                                <><span className="font-mono text-xs">{alloc.project.shortCode}</span> {alloc.project.name}</>
                              ) : "—"}
                            </td>
                          );
                        case "role":
                          return <td key={col.key} className="px-4 py-3 text-sm text-gray-600 dark:text-gray-400">{alloc.role}</td>;
                        case "dates":
                          return <td key={col.key} className="px-4 py-3 text-xs text-gray-500 dark:text-gray-400 whitespace-nowrap">{formatPeriod(alloc)}</td>;
                        case "hoursPerDay":
                          return <td key={col.key} className="px-4 py-3 text-sm text-gray-900 dark:text-gray-100">{alloc.hoursPerDay}h</td>;
                        case "cost":
                          return <td key={col.key} className="px-4 py-3 text-sm text-gray-900 dark:text-gray-100">{(alloc.dailyCostCents / 100).toFixed(0)} €</td>;
                        case "status":
                          return (
                            <td key={col.key} className="px-4 py-3">
                              <span className={`inline-block px-2 py-0.5 text-xs rounded-full font-medium ${STATUS_BADGE[alloc.status] ?? "bg-gray-100 text-gray-600 dark:bg-gray-700 dark:text-gray-400"}`}>
                                {alloc.status}
                              </span>
                            </td>
                          );
                        default:
                          return <td key={col.key} className="px-4 py-3 text-sm text-gray-500">—</td>;
                      }
                    })}
                    <td className="px-4 py-3">
                      <div className="flex items-center gap-2 justify-end">
                        <button type="button" onClick={() => openEdit(alloc)} className="text-xs text-blue-600 hover:text-blue-800 font-medium hover:underline">Edit</button>
                        <button
                          type="button"
                          onClick={() => setConfirmDelete({ single: alloc })}
                          disabled={singleDeletePending}
                          className="text-xs text-red-500 hover:text-red-700 font-medium hover:underline disabled:opacity-50"
                        >
                          Delete
                        </button>
                      </div>
                    </td>
                  </tr>
                );
              })}
          </tbody>
        </table>
      </div>

      {!isLoading && filteredDemands.length > 0 && (
        <div className="mt-6 bg-white dark:bg-gray-800 rounded-xl border border-amber-200 dark:border-amber-800/60 overflow-hidden">
          <div className="px-4 py-3 border-b border-amber-200 dark:border-amber-800/60 bg-amber-50/70 dark:bg-amber-950/20 flex items-center justify-between">
            <div>
              <h2 className="text-sm font-semibold text-amber-900 dark:text-amber-200">Open Demands</h2>
              <p className="text-xs text-amber-700 dark:text-amber-300/80">
                Placeholder demand rows not yet assigned to a resource.
              </p>
            </div>
            <span className="text-xs font-medium text-amber-700 dark:text-amber-300">
              {filteredDemands.length} item{filteredDemands.length !== 1 ? "s" : ""}
            </span>
          </div>
          <div className="divide-y divide-amber-100 dark:divide-amber-900/40">
            {filteredDemands.map((demand) => (
              <div
                key={demand.id}
                className="px-4 py-3 flex items-center justify-between gap-4 hover:bg-amber-50/40 dark:hover:bg-amber-950/10"
              >
                <div className="min-w-0">
                  <div className="text-sm font-medium text-gray-900 dark:text-gray-100 truncate">
                    {demand.project ? (
                      <><span className="font-mono text-xs">{demand.project.shortCode}</span> {demand.project.name}</>
                    ) : "Unknown project"}
                  </div>
                  <div className="text-xs text-gray-500 dark:text-gray-400 mt-1">
                    {(demand.role ?? "Placeholder role")} · {formatPeriod(demand)} · {demand.hoursPerDay}h/day
                  </div>
                </div>
                <div className="flex items-center gap-4 flex-shrink-0">
                  <div className="text-right">
                    <div className="text-xs uppercase tracking-wide text-amber-700 dark:text-amber-300">Unfilled</div>
                    <div className="text-sm font-semibold text-amber-900 dark:text-amber-200">
                      {demand.unfilledHeadcount ?? demand.headcount} / {demand.requestedHeadcount ?? demand.headcount}
                    </div>
                  </div>
                  <div className="flex items-center gap-2">
                    <button
                      type="button"
                      onClick={() => openEdit(demand as AllocationWithDetails)}
                      className="text-xs text-blue-600 hover:text-blue-800 font-medium hover:underline"
                    >
                      Edit
                    </button>
                    <button
                      type="button"
                      onClick={() => setConfirmDelete({ single: demand as AllocationWithDetails })}
                      disabled={singleDeletePending}
                      className="text-xs text-red-500 hover:text-red-700 font-medium hover:underline disabled:opacity-50"
                    >
                      Delete
                    </button>
                  </div>
                </div>
              </div>
            ))}
          </div>
        </div>
      )}

      {/* Batch Status Picker */}
      {batchStatusPicker && (
        <div className="fixed inset-0 bg-black/30 z-50 flex items-center justify-center p-4" onClick={() => setBatchStatusPicker(false)}>
          <div className="bg-white dark:bg-gray-800 rounded-xl shadow-2xl p-5 min-w-[220px]" onClick={(e) => e.stopPropagation()}>
            <h3 className="text-sm font-semibold text-gray-900 dark:text-gray-100 mb-3">Set status for {selection.count} allocations</h3>
            <div className="flex flex-col gap-1">
              {ALL_ALLOC_STATUSES.map((s) => (
                <button
                  key={s.value}
                  type="button"
                  onClick={() => {
                    setConfirmBatchStatus({ ids: selectedMutationIds, status: s.value });
                    setBatchStatusPicker(false);
                  }}
                  className="w-full text-left px-3 py-2 text-sm rounded-lg hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors"
                >
                  <span className={`inline-block px-2 py-0.5 text-xs rounded-full font-medium ${STATUS_BADGE[s.value]}`}>
                    {s.label}
                  </span>
                </button>
              ))}
            </div>
          </div>
        </div>
      )}

      {/* Confirm single delete */}
      {confirmDelete?.single && (
        <ConfirmDialog
          title="Delete Allocation"
          message={`Delete allocation for ${confirmDelete.single.resource?.displayName ?? "resource"} on ${confirmDelete.single.project?.name ?? "project"}?`}
          confirmLabel="Delete"
          variant="danger"
          onConfirm={() => {
            handleSingleDelete(confirmDelete.single!);
            setConfirmDelete(null);
          }}
          onCancel={() => setConfirmDelete(null)}
        />
      )}

      {/* Confirm batch delete */}
      {confirmDelete?.ids && (
        <ConfirmDialog
          title="Delete Allocations"
          message={`Delete ${confirmDelete.ids.length} selected allocation${confirmDelete.ids.length !== 1 ? "s" : ""}? This cannot be undone.`}
          confirmLabel="Delete All"
          variant="danger"
          onConfirm={() => {
            batchDeleteMutation.mutate({ ids: confirmDelete.ids! });
            setConfirmDelete(null);
          }}
          onCancel={() => setConfirmDelete(null)}
        />
      )}

      {/* Confirm batch status */}
      {confirmBatchStatus && (
        <ConfirmDialog
          title="Update Allocation Status"
          message={`Set ${confirmBatchStatus.ids.length} allocation${confirmBatchStatus.ids.length !== 1 ? "s" : ""} to "${confirmBatchStatus.status}"?`}
          confirmLabel="Update"
          onConfirm={() => {
            batchStatusMutation.mutate({ ids: confirmBatchStatus.ids, status: confirmBatchStatus.status as never });
            setConfirmBatchStatus(null);
          }}
          onCancel={() => setConfirmBatchStatus(null)}
        />
      )}

      {/* Batch Action Bar */}
      <BatchActionBar
        count={selection.count}
        onClear={selection.clear}
        actions={[
          {
            label: "Set Status…",
            onClick: () => setBatchStatusPicker(true),
            disabled: batchStatusMutation.isPending,
          },
          {
            label: `Delete (${selection.count})`,
            variant: "danger",
            onClick: () => setConfirmDelete({ ids: selectedMutationIds }),
            disabled: batchDeleteMutation.isPending,
          },
        ]}
      />

      {/* Modal */}
      {modalOpen && (
        <AllocationModal allocation={editingAllocation} onClose={closeModal} onSuccess={closeModal} />
      )}
    </div>
  );
}
