import { useMemo, useState } from "react";
import { render, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { describe, expect, it, vi } from "vitest";
import { AssignedToCell } from "@/app/(protected)/workorders/_components/list/table/cells/assigned-to-cell";
import { WoTableBody } from "@/app/(protected)/workorders/_components/list/table/wo-table-body";
import type { ReturnTypeOfUseWorkOrdersTableData } from "@/app/(protected)/workorders/_components/list/table/wo-table-types";
import { expandTablePatchToBoardFieldOps } from "@/domain/work-orders/mappers/work-order-board-patch-mapper";
import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
import {
  buildDayGroups,
  composeBoardSections,
  rowIdSet,
} from "@/domain/work-orders/utils/table-filter-utils";

function makeRow(overrides: Partial<WorkOrderTableRow> = {}): WorkOrderTableRow {
  return {
    id: "1",
    woNumber: "24991",
    site: "CLV2",
    type: "PM",
    severity: null,
    dispatcherId: "",
    dispatcherName: "",
    scheduledOn: "2026-06-02",
    completedDate: "",
    targetWeek: "",
    dayGroup: "06/02",
    dayLabel: "TUE · 06/02",
    location: "Cleveland, OH",
    locationId: "",
    pm: "Backflow",
    serviceNotes: "",
    extraServices: [],
    company: "",
    tech: "",
    techPhone: "",
    apptStart: "",
    apptEnd: "",
    apptTime: "—",
    status: "Incomplete",
    docStatus: "No",
    pocName: "",
    pocPhone: "",
    pocNotes: "",
    dueDate: "",
    rescheduleCount: 0,
    carriedOver: 0,
    isAddOn: false,
    originalWeek: "",
    originalDate: "",
    isPastDue: false,
    scheduleWeekOnly: false,
    mediaCount: 0,
    title: "",
    priority: "",
    vendorId: "",
    primaryDispatchId: null,
    rowVersion: "",
    dispatchRowVersion: "",
    flagColor: null,
    ...overrides,
  };
}

function baseTableData(
  overrides: Partial<ReturnTypeOfUseWorkOrdersTableData> = {},
): ReturnTypeOfUseWorkOrdersTableData {
  return {
    rows: [],
    isLoading: false,
    isFetching: false,
    error: null,
    refetch: vi.fn(),
    advActive: false,
    advResults: [],
    unassigned: [],
    unassignedError: null,
    unscheduled: [],
    displayGroups: [],
    searchActive: false,
    noSearchResults: false,
    isEmptyWeek: false,
    todayKey: null,
    draftDayKey: null,
    draft: null,
    setDraft: vi.fn(),
    unassignedOpen: true,
    setUnassignedOpen: vi.fn(),
    unschedOpen: true,
    setUnschedOpen: vi.fn(),
    selectedId: null,
    setSelectedId: vi.fn(),
    selectedRow: null,
    flashId: null,
    triggerFlash: vi.fn(),
    dragViz: null,
    setDragViz: vi.fn(),
    dragState: null,
    patchRow: vi.fn(),
    clearRowPatch: vi.fn(),
    reorderRows: vi.fn(),
    endDrag: vi.fn(),
    startDayDraft: vi.fn(),
    cancelDraft: vi.fn(),
    addRow: vi.fn(),
    scopeTotalCount: 0,
    totalCount: 0,
    search: "",
    ...overrides,
  } as ReturnTypeOfUseWorkOrdersTableData;
}

const DISPATCHER = { id: "sarah", name: "Sarah Chen", initials: "SC", color: "#3366cc" };

function UnassignedAssignHarness({
  initialRow,
  patchBoardField,
}: {
  initialRow: WorkOrderTableRow;
  patchBoardField: (
    id: string | number,
    payload: { field: string; value?: string | null },
  ) => Promise<WorkOrderTableRow>;
}) {
  const [rows, setRows] = useState([initialRow]);
  const weeklyIds = rowIdSet(rows);
  const sections = useMemo(
    () =>
      composeBoardSections({
        displayRows: rows,
        weekRows: rows,
        weeklyIds,
        queueIds: weeklyIds,
      }),
    [rows, weeklyIds],
  );
  const tableData = baseTableData({
    unassigned: sections.unassigned,
    unscheduled: sections.unscheduled,
    displayGroups: buildDayGroups(sections.scheduled),
  });

  return (
    <table>
      <WoTableBody
        tableData={tableData}
        renderRow={(row) => (
          <tr key={String(row.id)} data-testid={`row-${row.id}`}>
            <td>{row.woNumber}</td>
            <td>
              <AssignedToCell
                dispatcherId={row.dispatcherId}
                users={[DISPATCHER]}
                highlight={!row.dispatcherId}
                onSave={async (id, name) => {
                  const ops = expandTablePatchToBoardFieldOps({
                    dispatcherId: id,
                    dispatcherName: name,
                  });
                  const patched = await patchBoardField(row.id, ops[0]!);
                  setRows((current) =>
                    current.map((item) =>
                      String(item.id) === String(row.id)
                        ? { ...patched, dispatcherId: id, dispatcherName: name }
                        : item,
                    ),
                  );
                }}
              />
            </td>
          </tr>
        )}
        renderInlineRow={() => null}
      />
    </table>
  );
}

describe("WoTableBody Unassigned queue (SH-165)", () => {
  it("renders Unassigned above Unscheduled and day groups without duplicate rows", () => {
    const datedUnassigned = makeRow({ id: "u-dated", woNumber: "24991" });
    const undatedUnassigned = makeRow({
      id: "us1",
      woNumber: "25021",
      scheduledOn: "",
      dayGroup: "",
      dayLabel: "",
    });
    const undatedAssigned = makeRow({
      id: "us-assigned",
      woNumber: "25022",
      dispatcherId: "sarah",
      dispatcherName: "Sarah",
      scheduledOn: "",
      dayGroup: "",
      dayLabel: "",
    });
    const datedAssigned = makeRow({
      id: "day-assigned",
      woNumber: "25023",
      dispatcherId: "sarah",
      dispatcherName: "Sarah",
    });

    const tableData = baseTableData({
      unassigned: [datedUnassigned, undatedUnassigned],
      unscheduled: [undatedAssigned],
      displayGroups: [
        {
          key: "06/02",
          label: "TUE · 06/02",
          date: "2026-06-02",
          items: [datedAssigned],
        },
      ],
    });

    render(
      <table>
        <WoTableBody
          tableData={tableData}
          renderRow={(row) => (
            <tr key={String(row.id)} data-testid={`row-${row.id}`}>
              <td>{row.woNumber}</td>
            </tr>
          )}
          renderInlineRow={() => null}
        />
      </table>,
    );

    const unassignedHeader = screen.getByRole("button", {
      name: "Unassigned, 2 work orders, expanded",
    });
    const unscheduledHeader = screen.getByRole("button", {
      name: "Unscheduled, 1 work order, expanded",
    });
    const dayLabel = screen.getByText("TUE · 06/02");

    expect(unassignedHeader.compareDocumentPosition(screen.getByTestId("row-u-dated"))).toBe(
      Node.DOCUMENT_POSITION_FOLLOWING,
    );
    expect(unassignedHeader.compareDocumentPosition(unscheduledHeader)).toBe(
      Node.DOCUMENT_POSITION_FOLLOWING,
    );
    expect(unscheduledHeader.compareDocumentPosition(dayLabel)).toBe(
      Node.DOCUMENT_POSITION_FOLLOWING,
    );

    expect(screen.getByTestId("row-u-dated")).toBeInTheDocument();
    expect(screen.getByTestId("row-us1")).toBeInTheDocument();
    expect(screen.getByTestId("row-us-assigned")).toBeInTheDocument();
    expect(screen.getByTestId("row-day-assigned")).toBeInTheDocument();
    expect(screen.getAllByTestId(/row-/)).toHaveLength(4);
  });

  it("collapses and expands the Unassigned section via the disclosure control", async () => {
    const user = userEvent.setup();
    const setUnassignedOpen = vi.fn();
    const tableData = baseTableData({
      unassigned: [makeRow({ id: "u1", woNumber: "24991" })],
      setUnassignedOpen,
    });

    render(
      <table>
        <WoTableBody
          tableData={tableData}
          renderRow={(row) => (
            <tr key={String(row.id)} data-testid={`row-${row.id}`}>
              <td>{row.woNumber}</td>
            </tr>
          )}
          renderInlineRow={() => null}
        />
      </table>,
    );

    await user.click(screen.getByRole("button", { name: "Unassigned, 1 work order, expanded" }));
    expect(setUnassignedOpen).toHaveBeenCalledWith(expect.any(Function));
  });

  it("renders a scheduled unassigned WO from outside the selected week in the pin", () => {
    const outOfWeek = makeRow({
      id: "out-week",
      woNumber: "26001",
      scheduledOn: "2026-07-15",
      dayGroup: "07/15",
      dayLabel: "WED · 07/15",
    });

    render(
      <table>
        <WoTableBody
          tableData={baseTableData({ unassigned: [outOfWeek] })}
          renderRow={(row) => (
            <tr key={String(row.id)} data-testid={`row-${row.id}`}>
              <td>{row.woNumber}</td>
            </tr>
          )}
          renderInlineRow={() => null}
        />
      </table>,
    );

    expect(screen.getByTestId("row-out-week")).toBeInTheDocument();
    expect(screen.queryByText("WED · 07/15")).not.toBeInTheDocument();
  });

  it("keeps the Unassigned pin visible when the queue query fails", () => {
    render(
      <table>
        <WoTableBody
          tableData={baseTableData({
            unassignedError: new Error("queue unavailable"),
          })}
          renderRow={(row) => (
            <tr key={String(row.id)} data-testid={`row-${row.id}`}>
              <td>{row.woNumber}</td>
            </tr>
          )}
          renderInlineRow={() => null}
        />
      </table>,
    );

    expect(screen.getByText("queue unavailable")).toBeInTheDocument();
  });

  it("keeps the Unassigned section visible with an empty state when the queue is empty", () => {
    render(
      <table>
        <WoTableBody
          tableData={baseTableData()}
          renderRow={(row) => (
            <tr key={String(row.id)} data-testid={`row-${row.id}`}>
              <td>{row.woNumber}</td>
            </tr>
          )}
          renderInlineRow={() => null}
        />
      </table>,
    );

    expect(
      screen.getByRole("button", { name: "Unassigned, 0 work orders, expanded" }),
    ).toBeInTheDocument();
    expect(screen.getByText("No unassigned work orders.")).toBeInTheDocument();
    expect(screen.queryByTestId(/row-/)).not.toBeInTheDocument();
  });

  it("removes a pinned row immediately after assigning through the board PATCH path", async () => {
    const user = userEvent.setup();
    const pinned = makeRow({
      id: "u-pin",
      woNumber: "24991",
      dispatcherId: "",
      dispatcherName: "",
      rowVersion: "AAAAAAA=",
    });
    const patchBoardField = vi.fn(async (_id: string | number, payload: { field: string }) => {
      expect(payload.field).toBe("assignTo");
      return { ...pinned, dispatcherId: DISPATCHER.id, dispatcherName: DISPATCHER.name };
    });

    render(<UnassignedAssignHarness initialRow={pinned} patchBoardField={patchBoardField} />);

    expect(screen.getByTestId("row-u-pin")).toBeInTheDocument();
    await user.click(screen.getByRole("button", { name: /Select/ }));
    await user.click(screen.getByRole("button", { name: /Sarah Chen/ }));

    expect(patchBoardField).toHaveBeenCalled();
    expect(
      screen.getByRole("button", { name: "Unassigned, 0 work orders, expanded" }),
    ).toBeInTheDocument();
    expect(screen.getByText("No unassigned work orders.")).toBeInTheDocument();
    expect(screen.getByTestId("row-u-pin")).toBeInTheDocument();
    expect(screen.getByText("TUE · 06/02")).toBeInTheDocument();
  });
});