import { useMutation, useQueryClient } from "@tanstack/react-query";
import { toast } from "react-toastify";
import { workOrdersApi } from "@/domain/work-orders/api/work-orders-api";
import {
  mapApiStatusToWizard,
  mapWizardStatusToApi,
} from "@/domain/work-orders/mappers/wizard-draft-mapper";
import {
  mapWorkOrderDetailToFormValues,
  mapWorkOrderTableRow,
} from "@/domain/work-orders/mappers/work-order-mapper";
import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
import type { WizardWOStatus } from "@/domain/work-orders/types/work-order-wizard";
import { deriveDayFields } from "@/domain/work-orders/utils/table-day-utils";
import { enrichTableRow } from "@/domain/work-orders/utils/table-filter-utils";
import { queryKeys } from "@/infra/query-key/query-key";

export type WorkOrderTablePatch = Partial<WorkOrderTableRow>;

async function loadFormAndUpdate(
  id: string | number,
  patch: (
    values: ReturnType<typeof mapWorkOrderDetailToFormValues>,
  ) => ReturnType<typeof mapWorkOrderDetailToFormValues>,
) {
  const detail = await workOrdersApi.getById(id);
  const values = mapWorkOrderDetailToFormValues(detail);
  const next = patch(values);
  await workOrdersApi.update(id, next);
  return detail;
}

export function useWorkOrderTableMutations(
  onPatch: (id: string | number, patch: WorkOrderTablePatch) => void,
) {
  const queryClient = useQueryClient();

  const invalidate = () => {
    void queryClient.invalidateQueries({ queryKey: queryKeys.workOrders.all });
  };

  const patchMutation = useMutation({
    mutationFn: async ({
      id,
      patch,
      useFullUpdate,
    }: {
      id: string | number;
      patch: WorkOrderTablePatch;
      useFullUpdate?: boolean;
    }) => {
      if (patch.status !== undefined && !useFullUpdate) {
        const apiStatus = mapWizardStatusToApi(patch.status as WizardWOStatus);
        await workOrdersApi.changeStatus(id, apiStatus);
        return patch;
      }
      if (patch.dispatcherId !== undefined && !useFullUpdate) {
        await workOrdersApi.changeAssignment(id, patch.dispatcherId || "");
        return {
          ...patch,
          dispatcherName: patch.dispatcherName ?? "",
        };
      }
      await loadFormAndUpdate(id, (values) => ({
        ...values,
        workOrderNumber: patch.woNumber ?? values.workOrderNumber,
        internalWONumber: patch.woNumber ?? values.internalWONumber,
        locationId: patch.locationId != null ? String(patch.locationId) : values.locationId,
        dueDate: patch.dueDate ?? values.dueDate,
        scheduledDate: patch.scheduledOn ?? values.scheduledDate,
        completedDate: patch.completedDate ?? values.completedDate,
        assignedTo: patch.dispatcherName ?? values.assignedTo,
        problem: patch.pm ?? values.problem,
        source: patch.type ?? values.source,
        priority: values.priority,
        status:
          patch.status !== undefined
            ? mapWizardStatusToApi(patch.status as WizardWOStatus)
            : values.status,
        description: [
          values.description,
          patch.pocNotes ? `POC notes: ${patch.pocNotes}` : "",
          patch.pocName || patch.pocPhone
            ? `POC: ${[patch.pocName, patch.pocPhone].filter(Boolean).join(" · ")}`
            : "",
        ]
          .filter(Boolean)
          .join("\n"),
      }));
      return patch;
    },
    onMutate: async ({ id, patch }) => {
      onPatch(id, patch);
    },
    onSuccess: () => {
      invalidate();
    },
    onError: (error: Error) => {
      toast.error(error.message || "Failed to update work order");
      invalidate();
    },
  });

  const patchField = (id: string | number, patch: WorkOrderTablePatch, useFullUpdate = false) => {
    patchMutation.mutate({ id, patch, useFullUpdate });
  };

  return {
    patchField,
    isPending: patchMutation.isPending,
  };
}

export function tableRowFromDetail(detail: Awaited<ReturnType<typeof workOrdersApi.getById>>) {
  return enrichTableRow(
    mapWorkOrderTableRow({
      ...detail,
      status: mapApiStatusToWizard(detail.status),
      scheduledOn: detail.scheduledDate,
      woNumber: detail.internalWONumber || detail.workOrderNumber,
      dispatcherName: detail.assignedTo,
      pm: detail.problem,
      type: detail.source,
    }),
  );
}

export function maybeAutoSchedulePatch(row: WorkOrderTableRow): WorkOrderTablePatch {
  const hasDate = !!row.scheduledOn;
  const hasDispatcher = !!row.dispatcherId;
  if (hasDate && hasDispatcher && row.status === "Incomplete") {
    return { status: "Scheduled" };
  }
  return {};
}

export function applySchedulePatch(
  scheduledOn: string,
  scheduleWeekOnly: boolean,
): WorkOrderTablePatch {
  if (scheduleWeekOnly) {
    return {
      scheduledOn: "",
      targetWeek: scheduledOn,
      scheduleWeekOnly: true,
      ...deriveDayFields(""),
    };
  }
  return {
    scheduledOn,
    scheduleWeekOnly: false,
    targetWeek: "",
    ...deriveDayFields(scheduledOn),
  };
}