import type {
  WorkOrderBoardCreatePayload,
  WorkOrderTypeApi,
} from "@/domain/work-orders/types/work-order-board";

import {
  LIFECYCLE_STATUS_API,
  WORK_ORDER_TYPE_API,
} from "@/domain/work-orders/types/work-order-board";

import type {
  WizardWOStatus,
  WOType,
  WorkOrderWizardDraft,
} from "@/domain/work-orders/types/work-order-wizard";

import { fmtDateRange } from "@/domain/work-orders/utils/wizard-date-utils";

import { assignWizardScheduleFields } from "@/domain/work-orders/mappers/assign-wizard-schedule-fields";
import { assignWizardVendorApptFields } from "@/domain/work-orders/mappers/assign-wizard-vendor-appt-fields";
import { assignWizardServicePocFields } from "@/domain/work-orders/mappers/assign-wizard-service-poc-fields";
import { resolveIsAddOnForCreate } from "@/domain/work-orders/utils/wo-addon-cutoff";

const WO_TYPE_TO_API: Record<WOType, WorkOrderTypeApi> = {
  PM: WORK_ORDER_TYPE_API.PM,

  Emergency: WORK_ORDER_TYPE_API.Emergency,

  Reactive: WORK_ORDER_TYPE_API.Reactive,

  Overdue: WORK_ORDER_TYPE_API.Overdue,
};

/** Leading token of a location label, e.g. `BK5` from `BK5 · Dallas` or `CHI-1042` from `CHI-1042 — Chicago`. */

export function parseSiteCodeFromLocationName(name: string): string {
  const trimmed = name.trim();

  if (!trimmed) {
    return "";
  }

  const match = trimmed.match(/^([A-Za-z0-9-]+)/);

  return match?.[1] ?? "";
}

export function resolveSiteCode(option: {
  siteCode?: string;

  name?: string;
}): string {
  if (option.siteCode?.trim()) {
    return option.siteCode.trim();
  }

  return parseSiteCodeFromLocationName(option.name ?? "");
}

export function mapWizardTypeToApi(type: WOType | ""): WorkOrderTypeApi | null {
  if (!type) {
    return null;
  }

  return WO_TYPE_TO_API[type];
}

/**

 * Legacy/general description only.

 * Service notes, extras, POC, and vendor notes are sent as structured fields.

 */

export function buildBoardDescription(draft: WorkOrderWizardDraft): string {
  const parts: string[] = [];

  if (draft.schedMode === "range" && draft.scheduledOn && draft.scheduleEnd) {
    parts.push(`Schedule range: ${fmtDateRange(draft.scheduledOn, draft.scheduleEnd)}`);
  }

  return parts.join("\n");
}

export function mapWizardDraftToBoardCreatePayload(
  draft: WorkOrderWizardDraft,
): WorkOrderBoardCreatePayload {
  const workOrderType = mapWizardTypeToApi(draft.type || "PM");

  const siteCode = draft.siteCode.trim() || resolveSiteCode({ name: draft.locationName });

  if (workOrderType === null) {
    throw new Error("Work order type is required");
  }

  if (!siteCode) {
    throw new Error("Site code is required");
  }

  const payload: WorkOrderBoardCreatePayload = {
    workOrderType,

    siteCode,

    // Range start persists as scheduledDate (prototype hasScheduleDate). Use it for
    // the create-time Add-On cutoff hint; week mode uses targetWeek / Monday.
    isAddOn: resolveIsAddOnForCreate({
      scheduledOn: draft.scheduleWeekOnly
        ? draft.targetWeek?.trim() || draft.scheduledOn
        : draft.scheduledOn,
      manualOverride: draft.isAddOnOverride,
    }),
  };

  if (draft.status) {
    payload.lifecycleStatus = LIFECYCLE_STATUS_API[draft.status as WizardWOStatus];
  }

  if (draft.woNumber.trim()) {
    payload.woNumber = draft.woNumber.trim();
  }

  if (draft.assigneeId.trim()) {
    payload.assignTo = draft.assigneeId.trim();
  }

  assignWizardScheduleFields(payload, draft);
  assignWizardVendorApptFields(payload, draft);
  assignWizardServicePocFields(payload, draft);

  const description = buildBoardDescription(draft);

  if (description) {
    payload.description = description;
  }

  const locationId = draft.locationId.trim() ? Number(draft.locationId) : NaN;

  if (Number.isFinite(locationId)) {
    payload.locationId = locationId;
  }

  return payload;
}