import { readDocStatusFromRecord } from "@/domain/work-orders/mappers/doc-status-mapper";
import { parseSiteCodeFromLocationName } from "@/domain/work-orders/mappers/work-order-board-mapper";
import type {
  EmployeeOption,
  LocationOption,
  TaskListTemplate,
  WorkOrderAuditEntry,
  WorkOrderComment,
  WorkOrderDetail,
  WorkOrderDispatchSummary,
  WorkOrderFormValues,
  WorkOrderListItem,
} from "@/domain/work-orders/types/work-order";
import type { UpliftRequest } from "@/domain/uplifts/types/uplift";
import type { WorkOrderStatus } from "@/domain/work-orders/types/work-order-common";
import { WORK_ORDER_STATUS_OPTIONS } from "@/domain/work-orders/types/work-order-common";
import { toDateInputValue } from "@/lib/time-utils";

export { mapDocStatusToApi } from "@/domain/work-orders/mappers/doc-status-mapper";

function asRecord(raw: unknown): Record<string, unknown> {
  return typeof raw === "object" && raw !== null ? (raw as Record<string, unknown>) : {};
}

function toWorkOrderStatus(value: string): WorkOrderStatus {
  if (WORK_ORDER_STATUS_OPTIONS.includes(value as WorkOrderStatus)) {
    return value as WorkOrderStatus;
  }
  const fromEditEnum: Record<string, WorkOrderStatus> = {
    Open: "Open",
    InProgress: "In Progress",
    OnHold: "On Hold",
    Completed: "Done",
    Cancelled: "Cancelled",
    Canceled: "Cancelled",
  };
  return fromEditEnum[value] ?? "Open";
}

function readString(record: Record<string, unknown>, ...keys: string[]): string {
  for (const key of keys) {
    const value = record[key];
    if (typeof value === "string") {
      return value;
    }
    if (typeof value === "number") {
      return String(value);
    }
  }
  return "";
}

function readId(record: Record<string, unknown>): string | number {
  const value = record.id ?? record.Id;
  if (typeof value === "string" || typeof value === "number") {
    return value;
  }
  return "";
}

function readNumber(record: Record<string, unknown>, ...keys: string[]): number | null {
  for (const key of keys) {
    const value = record[key];
    if (typeof value === "number") {
      return value;
    }
    if (typeof value === "string" && value !== "") {
      const parsed = Number(value);
      if (!Number.isNaN(parsed)) {
        return parsed;
      }
    }
  }
  return null;
}

function readIdList(raw: unknown): number[] | undefined {
  if (!Array.isArray(raw)) {
    return undefined;
  }

  const ids: number[] = [];
  for (const entry of raw) {
    if (typeof entry === "number" && !Number.isNaN(entry)) {
      ids.push(entry);
      continue;
    }
    if (typeof entry === "string" && entry !== "") {
      const parsed = Number(entry);
      if (!Number.isNaN(parsed)) {
        ids.push(parsed);
      }
      continue;
    }
    if (typeof entry === "object" && entry !== null) {
      const id = readNumber(
        asRecord(entry),
        "id",
        "Id",
        "contactId",
        "ContactId",
        "categoryId",
        "CategoryId",
      );
      if (id != null) {
        ids.push(id);
      }
    }
  }

  return ids;
}

function readOptionalIdList(
  record: Record<string, unknown>,
  ...keys: string[]
): number[] | undefined {
  for (const key of keys) {
    if (!(key in record)) {
      continue;
    }
    const list = readIdList(record[key]);
    if (list !== undefined) {
      return list;
    }
  }
  return undefined;
}

const FORM_STATUS_TO_EDIT_ENUM: Record<string, string> = {
  Open: "Open",
  "In Progress": "InProgress",
  InProgress: "InProgress",
  "On Hold": "OnHold",
  OnHold: "OnHold",
  Done: "Completed",
  Completed: "Completed",
  Cancelled: "Cancelled",
  Canceled: "Cancelled",
};

const FORM_PRIORITY_TO_EDIT_ENUM: Record<string, string> = {
  "Sev 1": "Critical",
  "Sev 2": "High",
  "Sev 3": "Medium",
  "Sev 4": "Low",
  "Sev 5": "Low",
  Low: "Low",
  Medium: "Medium",
  High: "High",
  Critical: "Critical",
};

export function mapFormStatusToEditEnum(status: string): string {
  return FORM_STATUS_TO_EDIT_ENUM[status] ?? status;
}

export function mapFormPriorityToEditEnum(priority: string): string {
  return FORM_PRIORITY_TO_EDIT_ENUM[priority] ?? priority;
}

function appendIfPresent(
  formData: FormData,
  key: string,
  value: string | number | null | undefined,
): void {
  if (value === null || value === undefined) {
    return;
  }
  const asString = String(value).trim();
  if (asString === "") {
    return;
  }
  formData.append(key, asString);
}

function appendIdList(formData: FormData, key: string, ids: number[] | undefined): void {
  if (ids === undefined) {
    return;
  }
  for (const id of ids) {
    formData.append(key, String(id));
  }
}

function readBool(record: Record<string, unknown>, ...keys: string[]): boolean {
  for (const key of keys) {
    const value = record[key];
    if (typeof value === "boolean") {
      return value;
    }
  }
  return false;
}

export function mapWorkOrderListItem(raw: unknown): WorkOrderListItem {
  const item = asRecord(raw);

  return {
    id: readId(item),
    number: readString(item, "internalWONumber", "number", "workOrderNumber"),
    title: readString(item, "title", "Title"),
    location: readString(item, "location", "Location", "locationName", "LocationName"),
    priority: readString(item, "priority", "Priority"),
    status: readString(item, "status", "Status"),
    createdDate: readString(item, "createdDate", "CreatedDate"),
    dueDate: readString(item, "dueDate", "DueDate"),
    assignedTo: readString(item, "assignedTo", "AssignedTo", "employeeName", "EmployeeName"),
    lastUpdated: readString(item, "lastUpdated", "LastUpdated"),
  };
}

export function mapWorkOrderListItems(rawItems: unknown[]): WorkOrderListItem[] {
  return rawItems.map(mapWorkOrderListItem);
}

export { mapWorkOrderTableRow, mapWorkOrderTableRows } from "./work-order-table-row-mapper";

export function mapWorkOrderComment(raw: unknown): WorkOrderComment {
  const item = asRecord(raw);
  const authorId = readString(item, "authorId", "AuthorId") || null;

  return {
    id: readId(item),
    createdDate: readString(item, "createdDate", "CreatedDate"),
    commenttext: readString(item, "commenttext", "Commenttext", "text", "Text"),
    commentType: readString(item, "commentType", "CommentType"),
    userName: readString(item, "userName", "UserName", "authorName", "AuthorName"),
    authorId,
    commenter: readString(item, "commenter", "Commenter") || null,
    recordType: readString(item, "recordType", "RecordType") || null,
  };
}

export function mapWorkOrderAuditEntry(raw: unknown): WorkOrderAuditEntry {
  const item = asRecord(raw);
  const typeRaw = readString(item, "type", "Type").toLowerCase();
  const type =
    typeRaw === "system"
      ? ("system" as const)
      : typeRaw === "manual"
        ? ("manual" as const)
        : undefined;

  return {
    id: readId(item),
    fieldName: readString(item, "fieldName", "FieldName"),
    oldValue: readString(item, "oldValue", "OldValue"),
    newValue: readString(item, "newValue", "NewValue"),
    action: readString(item, "action", "Action"),
    createdAt: readString(item, "createdAt", "CreatedAt", "time", "Time"),
    userName: readString(item, "userName", "UserName"),
    type,
    dispatcherId: readString(item, "dispatcherId", "DispatcherId") || undefined,
  };
}

export function mapWorkOrderDispatchSummary(raw: unknown): WorkOrderDispatchSummary {
  const item = asRecord(raw);

  return {
    id: readId(item),
    vendorId: readId({ id: item.vendorId ?? item.VendorId }),
    dispatchNumber: readString(item, "dispatchNumber", "DispatchNumber"),
    poNumber: readString(item, "poNumber", "PoNumber", "PONumber"),
    vendorName: readString(item, "vendorName", "VendorName"),
    vendorEmail: readString(item, "vendorEmail", "VendorEmail"),
    nteAmount: readNumber(item, "nteAmount", "NTEAmount"),
    status: readString(item, "status", "Status"),
    dispatchedAt: readString(item, "dispatchedAt", "DispatchedAt"),
    estimatedArrivalAt: readString(item, "estimatedArrivalAt", "EstimatedArrivalAt"),
    etaManualOverride: readBool(item, "etaManualOverride", "EtaManualOverride"),
  };
}

export function mapWorkOrderDetail(raw: unknown): WorkOrderDetail {
  const wo = asRecord(raw);
  const locationId = wo.locationId ?? wo.LocationId;
  const contactIds = readOptionalIdList(wo, "contactIds", "ContactIds", "contacts", "Contacts");
  const categoryIds = readOptionalIdList(
    wo,
    "categoryIds",
    "CategoryIds",
    "categories",
    "Categories",
  );

  return {
    id: readId(wo),
    internalWONumber: readString(wo, "internalWONumber", "InternalWONumber"),
    workOrderNumber: readString(wo, "workerOrderNumber", "workOrderNumber", "WorkerOrderNumber"),
    title: readString(wo, "title", "workerOrderTitle", "WorkerOrderTitle"),
    location: readString(wo, "location", "Location"),
    locationId: locationId != null ? String(locationId) : "",
    locationZip: readString(wo, "locationZip", "LocationZip"),
    assignedTo: readString(wo, "assignee", "assignedTo", "Assignee", "AssignedTo"),
    dueDate: toDateInputValue(readString(wo, "dueDate", "DueDate")),
    createdDate: toDateInputValue(readString(wo, "createdDate", "CreatedDate")),
    createdDateFull: readString(wo, "createdDate", "CreatedDate"),
    description: readString(wo, "description", "Description"),
    priority: readString(wo, "priority", "Priority"),
    status: readString(wo, "status", "Status") || "Open",
    po: readString(wo, "po", "PO"),
    tt: readString(wo, "tt", "TT"),
    problem: readString(wo, "problem", "Problem"),
    trade: readString(wo, "trade", "Trade"),
    subTrade: readString(wo, "subTrade", "SubTrade"),
    vendorNTE: wo.vendorNTE != null ? String(wo.vendorNTE) : "",
    scheduledDate: toDateInputValue(readString(wo, "scheduledDate", "ScheduledDate")),
    completedDate: toDateInputValue(readString(wo, "completedDate", "CompletedDate")),
    // DocStatus is a board field — persist via PATCH …/board, not EditWorkorder.
    docStatus: readDocStatusFromRecord(wo),
    source: readString(wo, "source", "Source"),
    ...(contactIds !== undefined ? { contactIds } : {}),
    ...(categoryIds !== undefined ? { categoryIds } : {}),
    comments: Array.isArray(wo.comments)
      ? wo.comments.map(mapWorkOrderComment)
      : Array.isArray(wo.Comments)
        ? wo.Comments.map(mapWorkOrderComment)
        : [],
    auditLog: Array.isArray(wo.auditLog)
      ? wo.auditLog.map(mapWorkOrderAuditEntry)
      : Array.isArray(wo.AuditLog)
        ? wo.AuditLog.map(mapWorkOrderAuditEntry)
        : [],
    dispatches: Array.isArray(wo.dispatches)
      ? wo.dispatches.map(mapWorkOrderDispatchSummary)
      : Array.isArray(wo.Dispatches)
        ? wo.Dispatches.map(mapWorkOrderDispatchSummary)
        : [],
  };
}

export function mapWorkOrderDetailToFormValues(detail: WorkOrderDetail): WorkOrderFormValues {
  return {
    internalWONumber: detail.internalWONumber,
    workOrderNumber: detail.workOrderNumber,
    title: detail.title,
    locationId: detail.locationId,
    priority: detail.priority,
    status: toWorkOrderStatus(detail.status),
    createdDate: detail.createdDate,
    dueDate: detail.dueDate,
    scheduledDate: detail.scheduledDate,
    completedDate: detail.completedDate,
    docStatus: detail.docStatus,
    assignedTo: detail.assignedTo,
    description: detail.description,
    po: detail.po,
    tt: detail.tt,
    problem: detail.problem,
    trade: detail.trade,
    subTrade: detail.subTrade,
    vendorNTE: detail.vendorNTE,
    source: detail.source,
    ...(detail.contactIds !== undefined ? { contactIds: detail.contactIds } : {}),
    ...(detail.categoryIds !== undefined ? { categoryIds: detail.categoryIds } : {}),
  };
}

export function mapWorkOrderFormToCreatePayload(
  values: WorkOrderFormValues,
): Record<string, unknown> {
  return {
    WorkerOrderNumber: values.workOrderNumber,
    WorkerOrderTitle: values.title,
    LocationId: values.locationId ? parseInt(values.locationId, 10) : null,
    Priority: values.priority || null,
    Status: values.status,
    CreatedDate: values.createdDate || null,
    DueDate: values.dueDate || null,
    ScheduledDate: values.scheduledDate || null,
    CompletedDate: values.completedDate || null,
    AssignTo: values.assignedTo || null,
    Description: values.description,
    PO: values.po || null,
    TT: values.tt || null,
    Problem: values.problem || null,
    Trade: values.trade || null,
    SubTrade: values.subTrade || null,
    VendorNTE: values.vendorNTE ? parseFloat(values.vendorNTE) : null,
    Source: values.source || null,
  };
}

export function mapWorkOrderFormToUpdateFormData(
  id: string | number,
  values: WorkOrderFormValues,
): FormData {
  const formData = new FormData();
  formData.append("Id", String(id));

  appendIfPresent(formData, "WorkerOrderTitle", values.title);
  appendIfPresent(formData, "Description", values.description);
  appendIfPresent(formData, "Status", mapFormStatusToEditEnum(values.status));
  appendIfPresent(formData, "Priority", mapFormPriorityToEditEnum(values.priority));
  const locationId = values.locationId ? parseInt(values.locationId, 10) : NaN;
  appendIfPresent(formData, "LocationId", Number.isNaN(locationId) ? undefined : locationId);
  appendIfPresent(formData, "AssignTo", values.assignedTo);
  appendIfPresent(formData, "DueDate", values.dueDate);
  appendIfPresent(formData, "CompletedDate", values.completedDate);
  appendIdList(formData, "ContactIds", values.contactIds);
  appendIdList(formData, "CategoryIds", values.categoryIds);

  return formData;
}

export function mapLocationOption(raw: unknown): LocationOption {
  const item = asRecord(raw);
  const name = readString(item, "name", "Name", "locationName", "LocationName");
  const siteCode =
    readString(item, "siteCode", "SiteCode", "code", "Code") || parseSiteCodeFromLocationName(name);

  return {
    id: readId(item),
    name,
    ...(siteCode ? { siteCode } : {}),
  };
}

export function mapLocationOptions(rawItems: unknown[]): LocationOption[] {
  return rawItems.map(mapLocationOption);
}

export function mapEmployeeOption(raw: unknown): EmployeeOption {
  const item = asRecord(raw);

  return {
    id: readId(item),
    name:
      readString(item, "name", "Name", "fullName", "FullName", "employeeName", "EmployeeName") ||
      readString(item, "userName", "UserName"),
  };
}

export function mapEmployeeOptions(rawItems: unknown[]): EmployeeOption[] {
  return rawItems.map(mapEmployeeOption);
}

export { mapVendorDropdownItem, mapVendorDropdownItems } from "./work-order-vendor-mapper";

export function mapTaskListTemplate(raw: unknown): TaskListTemplate {
  const item = asRecord(raw);
  const items = item.items ?? item.Items;

  return {
    id: readId(item),
    name: readString(item, "name", "Name"),
    items: Array.isArray(items) ? items : [],
  };
}

export function mapTaskListTemplates(rawItems: unknown[]): TaskListTemplate[] {
  return rawItems.map(mapTaskListTemplate);
}

export {
  mapDispatchChecklistItem,
  mapDispatchComment,
  mapDispatchDetail,
  mapDispatchSignoff,
  mapDispatchToVendorPayload,
  mapDispatchWorkOrderRef,
  mapUpdateDispatchPayload,
} from "./work-order-dispatch-mapper";

export function mapUpliftRequest(raw: unknown): UpliftRequest {
  const item = asRecord(raw);

  return {
    id: readId(item),
    status: readString(item, "status", "Status"),
    currentNTE: readNumber(item, "currentNTE", "CurrentNTE"),
    requestedNTE: readNumber(item, "requestedNTE", "RequestedNTE") ?? 0,
    delta: readNumber(item, "delta", "Delta") ?? 0,
    vendorReason: readString(item, "vendorReason", "VendorReason"),
    requestedAt: readString(item, "requestedAt", "RequestedAt"),
    requestedByVendorName: readString(item, "requestedByVendorName", "RequestedByVendorName"),
    decidedAt: readString(item, "decidedAt", "DecidedAt"),
    decidedByName: readString(item, "decidedByName", "DecidedByName"),
    decisionNote: readString(item, "decisionNote", "DecisionNote"),
    requiredTier: readNumber(item, "requiredTier", "RequiredTier") ?? 1,
    canDecide: readBool(item, "canDecide", "CanDecide"),
  };
}

export function mapUpliftRequests(rawItems: unknown[]): UpliftRequest[] {
  return rawItems.map(mapUpliftRequest);
}